-;;;_* allout.el - Extensive outline mode for use alone and with other modes.
+;;; allout.el --- extensive outline mode for use alone and with other modes
-;; Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1992, 1993, 1994, 2001, 2002, 2003, 2004,
+;; 2005, 2006 Free Software Foundation, Inc.
-;; Author: Ken Manheimer <klm@nist.gov>
-;; Maintainer: Ken Manheimer <klm@nist.gov>
+;; Author: Ken Manheimer <ken dot manheimer at gmail dot com>
+;; Maintainer: Ken Manheimer <ken dot manheimer at gmail dot com>
;; Created: Dec 1991 - first release to usenet
-;; Version: Id: allout.el,v 4.3 1994/05/12 17:43:08 klm Exp ||
-;; Keywords: outline mode
+;; Version: 2.2.1
+;; Keywords: outlines wp languages
+;; Website: http://myriadicity.net/Sundry/EmacsAllout
;; This file is part of GNU Emacs.
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
-;;;_* Commentary:
-
-;; Allout outline mode provides extensive outline formatting and
-;; manipulation capabilities, subsuming and well beyond that of
-;; standard emacs outline mode. It is specifically aimed at
-;; supporting outline structuring and manipulation of syntax-
-;; sensitive text, eg programming languages. (For an example, see the
-;; allout code itself, which is organized in outline structure.)
-;;
-;; It also includes such things as topic-oriented repositioning, cut, and
-;; paste; integral outline exposure-layout; incremental search with
-;; dynamic exposure/conceament of concealed text; automatic topic-number
-;; maintenance; and many other features.
-;;
-;; See the docstring of the variables `outline-layout' and
-;; `outline-auto-activation' for details on automatic activation of
-;; allout outline-mode as a minor mode. (It has changed since allout
-;; 3.x, for those of you that depend on the old method.)
-;;
-;; Note - the lines beginning with ';;;_' are outline topic headers.
-;; Just 'ESC-x eval-current-buffer' to give it a whirl.
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
-;;Ken Manheimer 301 975-3539
-;;ken.manheimer@nist.gov FAX: 301 963-9137
+;;; Commentary:
+
+;; Allout outline minor mode provides extensive outline formatting and
+;; and manipulation beyond standard emacs outline mode. Some features:
;;
-;;Computer Systems and Communications Division
+;; - Classic outline-mode topic-oriented navigation and exposure adjustment
+;; - Topic-oriented editing including coherent topic and subtopic
+;; creation, promotion, demotion, cut/paste across depths, etc.
+;; - Incremental search with dynamic exposure and reconcealment of text
+;; - Customizable bullet format - enables programming-language specific
+;; outlining, for code-folding editing. (Allout code itself is to try it;
+;; formatted as an outline - do ESC-x eval-buffer in allout.el; but
+;; emacs local file variables need to be enabled when the
+;; file was visited - see `enable-local-variables'.)
+;; - Configurable per-file initial exposure settings
+;; - Symmetric-key and key-pair topic encryption, plus symmetric passphrase
+;; mnemonic support, with verification against an established passphrase
+;; (using a stashed encrypted dummy string) and user-supplied hint
+;; maintenance. (See allout-toggle-current-subtree-encryption docstring.)
+;; - Automatic topic-number maintenance
+;; - "Hot-spot" operation, for single-keystroke maneuvering and
+;; exposure control (see the allout-mode docstring)
+;; - Easy rendering of exposed portions into numbered, latex, indented, etc
+;; outline styles
+;; - Careful attention to whitespace - enabling blank lines between items
+;; and maintenance of hanging indentation (in paragraph auto-fill and
+;; across topic promotion and demotion) of topic bodies consistent with
+;; indentation of their topic header.
;;
-;; Nat'l Institute of Standards and Technology
-;; Technology A151
-;; Gaithersburg, MD 20899
-
-;;;_* Provide
-(provide 'outline)
-(provide 'allout)
+;; and more.
+;;
+;; See the `allout-mode' function's docstring for an introduction to the
+;; mode.
+;;
+;; The latest development version and helpful notes are available at
+;; http://myriadicity.net/Sundry/EmacsAllout .
+;;
+;; The outline menubar additions provide quick reference to many of
+;; the features, and see the docstring of the variable `allout-init'
+;; for instructions on priming your Emacs session for automatic
+;; activation of allout-mode.
+;;
+;; See the docstring of the variables `allout-layout' and
+;; `allout-auto-activation' for details on automatic activation of
+;; `allout-mode' as a minor mode. (It has changed since allout
+;; 3.x, for those of you that depend on the old method.)
+;;
+;; Note - the lines beginning with `;;;_' are outline topic headers.
+;; Just `ESC-x eval-buffer' to give it a whirl.
+
+;; ken manheimer (ken dot manheimer at gmail dot com)
+
+;;; Code:
+
+;;;_* Dependency autoloads
+(require 'overlay)
+(eval-when-compile
+ ;; Most of the requires here are for stuff covered by autoloads.
+ ;; Since just byte-compiling doesn't trigger autoloads, so that
+ ;; "function not found" warnings would occur without these requires.
+ (progn
+ (require 'pgg)
+ (require 'pgg-gpg)
+ (require 'overlay)
+ ;; `cl' is required for `assert'. `assert' is not covered by a standard
+ ;; autoload, but it is a macro, so that eval-when-compile is sufficient
+ ;; to byte-compile it in, or to do the require when the buffer evalled.
+ (require 'cl)
+ ))
;;;_* USER CUSTOMIZATION VARIABLES:
+;;;_ > defgroup allout
+(defgroup allout nil
+ "Extensive outline mode for use alone and with other modes."
+ :prefix "allout-"
+ :group 'outlines)
+
;;;_ + Layout, Mode, and Topic Header Configuration
-;;;_ = outline-auto-activation
-(defvar outline-auto-activation nil
- "*Regulates auto-activation modality of allout outlines - see `outline-init'.
+;;;_ = allout-auto-activation
+(defcustom allout-auto-activation nil
+ "*Regulates auto-activation modality of allout outlines - see `allout-init'.
-Setq-default by `outline-init' to regulate whether or not allout
+Setq-default by `allout-init' to regulate whether or not allout
outline mode is automatically activated when the buffer-specific
-variable `outline-layout' is non-nil, and whether or not the layout
-dictated by `outline-layout' should be imposed on mode activation.
+variable `allout-layout' is non-nil, and whether or not the layout
+dictated by `allout-layout' should be imposed on mode activation.
-With value `t', auto-mode-activation and auto-layout are enabled.
-\(This also depends on `outline-find-file-hooks' being installed in
-`find-file-hooks', which is also done by `outline-init'.)
+With value t, auto-mode-activation and auto-layout are enabled.
+\(This also depends on `allout-find-file-hook' being installed in
+`find-file-hook', which is also done by `allout-init'.)
With value `ask', auto-mode-activation is enabled, and endorsement for
performing auto-layout is asked of the user each time.
-With value `activate', only auto-mode-activation is enabled, auto-
-layout is not.
+With value `activate', only auto-mode-activation is enabled,
+auto-layout is not.
-With value `nil', neither auto-mode-activation nor auto-layout are
+With value nil, neither auto-mode-activation nor auto-layout are
enabled.
-See the docstring for `outline-init' for the proper interface to
-this variable.")
-;;;_ = outline-layout
-(defvar outline-layout nil
- "*Layout specification and provisional mode trigger for allout outlines.
-
-Buffer-specific.
-
-A list value specifies a default layout for the current buffer, to be
-applied upon activation of allout outline-mode. Any non-nil value
-will automatically trigger allout outline-mode, provided `outline-
-init' has been called to enable it.
-
-See the docstring for `outline-init' for details on setting up for
-auto-mode-activation, and for `outline-expose-topic' for the format of
-the layout specification.
+See the docstring for `allout-init' for the proper interface to
+this variable."
+ :type '(choice (const :tag "On" t)
+ (const :tag "Ask about layout" "ask")
+ (const :tag "Mode only" "activate")
+ (const :tag "Off" nil))
+ :group 'allout)
+;;;_ = allout-default-layout
+(defcustom allout-default-layout '(-2 : 0)
+ "*Default allout outline layout specification.
+
+This setting specifies the outline exposure to use when
+`allout-layout' has the local value `t'. This docstring describes the
+layout specifications.
+
+A list value specifies a default layout for the current buffer,
+to be applied upon activation of `allout-mode'. Any non-nil
+value will automatically trigger `allout-mode', provided
+`allout-init' has been called to enable this behavior.
+
+The types of elements in the layout specification are:
+
+ integer - dictate the relative depth to open the corresponding topic(s),
+ where:
+ - negative numbers force the topic to be closed before opening
+ to the absolute value of the number, so all siblings are open
+ only to that level.
+ - positive numbers open to the relative depth indicated by the
+ number, but do not force already opened subtopics to be closed.
+ - 0 means to close topic - hide all subitems.
+ : - repeat spec - apply the preceeding element to all siblings at
+ current level, *up to* those siblings that would be covered by specs
+ following the `:' on the list. Ie, apply to all topics at level but
+ trailing ones accounted for by trailing specs. \(Only the first of
+ multiple colons at the same level is honored - later ones are ignored.)
+ * - completely exposes the topic, including bodies
+ + - exposes all subtopics, but not the bodies
+ - - exposes the body of the corresponding topic, but not subtopics
+ list - a nested layout spec, to be applied intricately to its
+ corresponding item(s)
-You can associate a particular outline layout with a file by setting
-this var via the file's local variables. For example, the following
-lines at the bottom of an elisp file:
-
-;;;Local variables:
-;;;outline-layout: \(0 : -1 -1 0\)
-;;;End:
-
-will, modulo the above-mentioned conditions, cause the mode to be
-activated when the file is visited, followed by the equivalent of
-`\(outline-expose-topic 0 : -1 -1 0\)'. \(This is the layout used for
-the allout.el, itself.)
-
-Also, allout's mode-specific provisions will make topic prefixes
-default to the comment-start string, if any, of the language of the
-file. This is modulo the setting of `outline-use-mode-specific-
-leader', which see.")
-(make-variable-buffer-local 'outline-layout)
-
-;;;_ = outline-header-prefix
-(defvar outline-header-prefix "."
+Examples:
+ '(-2 : 0)
+ Collapse the top-level topics to show their children and
+ grandchildren, but completely collapse the final top-level topic.
+ '(-1 () : 1 0)
+ Close the first topic so only the immediate subtopics are shown,
+ leave the subsequent topics exposed as they are until the second
+ second to last topic, which is exposed at least one level, and
+ completely close the last topic.
+ '(-2 : -1 *)
+ Expose children and grandchildren of all topics at current
+ level except the last two; expose children of the second to
+ last and completely expose the last one, including its subtopics.
+
+See `allout-expose-topic' for more about the exposure process.
+
+Also, allout's mode-specific provisions will make topic prefixes default
+to the comment-start string, if any, of the language of the file. This
+is modulo the setting of `allout-use-mode-specific-leader', which see."
+ :type 'allout-layout-type
+ :group 'allout)
+;;;_ : allout-layout-type
+(define-widget 'allout-layout-type 'lazy
+ "Allout layout format customization basic building blocks."
+ :type '(repeat
+ (choice (integer :tag "integer (<= zero is strict)")
+ (const :tag ": (repeat prior)" :)
+ (const :tag "* (completely expose)" *)
+ (const :tag "+ (expose all offspring, headlines only)" +)
+ (const :tag "- (expose topic body but not offspring)" -)
+ (allout-layout-type :tag "<Nested layout>"))))
+
+;;;_ = allout-show-bodies
+(defcustom allout-show-bodies nil
+ "*If non-nil, show entire body when exposing a topic, rather than
+just the header."
+ :type 'boolean
+ :group 'allout)
+(make-variable-buffer-local 'allout-show-bodies)
+;;;###autoload
+(put 'allout-show-bodies 'safe-local-variable
+ (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil)))))
+
+;;;_ = allout-beginning-of-line-cycles
+(defcustom allout-beginning-of-line-cycles t
+ "*If non-nil, \\[allout-beginning-of-line] will cycle through smart-placement options.
+
+Cycling only happens on when the command is repeated, not when it
+follows a different command.
+
+Smart-placement means that repeated calls to this function will
+advance as follows:
+
+ - if the cursor is on a non-headline body line and not on the first column:
+ then it goes to the first column
+ - if the cursor is on the first column of a non-headline body line:
+ then it goes to the start of the headline within the item body
+ - if the cursor is on the headline and not the start of the headline:
+ then it goes to the start of the headline
+ - if the cursor is on the start of the headline:
+ then it goes to the bullet character \(for hotspot navigation\)
+ - if the cursor is on the bullet character:
+ then it goes to the first column of that line \(the headline\)
+ - if the cursor is on the first column of the headline:
+ then it goes to the start of the headline within the item body.
+
+In this fashion, you can use the beginning-of-line command to do
+its normal job and then, when repeated, advance through the
+entry, cycling back to start.
+
+If this configuration variable is nil, then the cursor is just
+advanced to the beginning of the line and remains there on
+repeated calls."
+ :type 'boolean :group 'allout)
+;;;_ = allout-end-of-line-cycles
+(defcustom allout-end-of-line-cycles t
+ "*If non-nil, \\[allout-end-of-line] will cycle through smart-placement options.
+
+Cycling only happens on when the command is repeated, not when it
+follows a different command.
+
+Smart-placement means that repeated calls to this function will
+advance as follows:
+
+ - if the cursor is not on the end-of-line,
+ then it goes to the end-of-line
+ - if the cursor is on the end-of-line but not the end-of-entry,
+ then it goes to the end-of-entry, exposing it if necessary
+ - if the cursor is on the end-of-entry,
+ then it goes to the end of the head line
+
+In this fashion, you can use the end-of-line command to do its
+normal job and then, when repeated, advance through the entry,
+cycling back to start.
+
+If this configuration variable is nil, then the cursor is just
+advanced to the end of the line and remains there on repeated
+calls."
+ :type 'boolean :group 'allout)
+
+;;;_ = allout-header-prefix
+(defcustom allout-header-prefix "."
+;; this string is treated as literal match. it will be `regexp-quote'd, so
+;; one cannot use regular expressions to match varying header prefixes.
"*Leading string which helps distinguish topic headers.
Outline topic header lines are identified by a leading topic
header prefix, which mostly have the value of this var at their front.
-\(Level 1 topics are exceptions. They consist of only a single
-character, which is typically set to the outline-primary-bullet. Many
-outlines start at level 2 to avoid this discrepancy.")
-(make-variable-buffer-local 'outline-header-prefix)
-;;;_ = outline-primary-bullet
-(defvar outline-primary-bullet "*"
+Level 1 topics are exceptions. They consist of only a single
+character, which is typically set to the `allout-primary-bullet'."
+ :type 'string
+ :group 'allout)
+(make-variable-buffer-local 'allout-header-prefix)
+;;;###autoload
+(put 'allout-header-prefix 'safe-local-variable 'stringp)
+;;;_ = allout-primary-bullet
+(defcustom allout-primary-bullet "*"
"Bullet used for top-level outline topics.
Outline topic header lines are identified by a leading topic header
prefix, which is concluded by bullets that includes the value of this
-var and the respective outline-*-bullets-string vars.
-
-The value of an asterisk ('*') provides for backwards compatability
-with the original emacs outline mode. See outline-plain-bullets-string
-and outline-distinctive-bullets-string for the range of available
-bullets.")
-(make-variable-buffer-local 'outline-primary-bullet)
-;;;_ = outline-plain-bullets-string
-(defvar outline-plain-bullets-string (concat outline-primary-bullet
- "+-:.;,")
+var and the respective allout-*-bullets-string vars.
+
+The value of an asterisk (`*') provides for backwards compatibility
+with the original Emacs outline mode. See `allout-plain-bullets-string'
+and `allout-distinctive-bullets-string' for the range of available
+bullets."
+ :type 'string
+ :group 'allout)
+(make-variable-buffer-local 'allout-primary-bullet)
+;;;###autoload
+(put 'allout-primary-bullet 'safe-local-variable 'stringp)
+;;;_ = allout-plain-bullets-string
+(defcustom allout-plain-bullets-string ".,"
"*The bullets normally used in outline topic prefixes.
-See 'outline-distinctive-bullets-string' for the other kind of
+See `allout-distinctive-bullets-string' for the other kind of
bullets.
-DO NOT include the close-square-bracket, ']', as a bullet.
+DO NOT include the close-square-bracket, `]', as a bullet.
Outline mode has to be reactivated in order for changes to the value
-of this var to take effect.")
-(make-variable-buffer-local 'outline-plain-bullets-string)
-;;;_ = outline-distinctive-bullets-string
-(defvar outline-distinctive-bullets-string "=>([{}&!?#%\"X@$~\\"
+of this var to take effect."
+ :type 'string
+ :group 'allout)
+(make-variable-buffer-local 'allout-plain-bullets-string)
+;;;###autoload
+(put 'allout-plain-bullets-string 'safe-local-variable 'stringp)
+;;;_ = allout-distinctive-bullets-string
+(defcustom allout-distinctive-bullets-string "*+-=>()[{}&!?#%\"X@$~_\\:;^"
"*Persistent outline header bullets used to distinguish special topics.
-These bullets are not offered among the regular, level-specific
-rotation, and are not altered by automatic rebulleting, as when
-shifting the level of a topic. See `outline-plain-bullets-string' for
-the selection of alternating bullets.
-
-You must run 'set-outline-regexp' in order for changes
-to the value of this var to effect outline-mode operation.
-
-DO NOT include the close-square-bracket, ']', on either of the bullet
-strings.")
-(make-variable-buffer-local 'outline-distinctive-bullets-string)
-
-;;;_ = outline-use-mode-specific-leader
-(defvar outline-use-mode-specific-leader t
+These bullets are used to distinguish topics from the run-of-the-mill
+ones. They are not used in the standard topic headers created by
+the topic-opening, shifting, and rebulleting \(eg, on topic shift,
+topic paste, blanket rebulleting) routines, but are offered among the
+choices for rebulleting. They are not altered by the above automatic
+rebulleting, so they can be used to characterize topics, eg:
+
+ `?' question topics
+ `\(' parenthetic comment \(with a matching close paren inside)
+ `[' meta-note \(with a matching close ] inside)
+ `\"' a quotation
+ `=' value settings
+ `~' \"more or less\"
+ `^' see above
+
+ ... for example. (`#' typically has a special meaning to the software,
+according to the value of `allout-numbered-bullet'.)
+
+See `allout-plain-bullets-string' for the selection of
+alternating bullets.
+
+You must run `set-allout-regexp' in order for outline mode to
+reconcile to changes of this value.
+
+DO NOT include the close-square-bracket, `]', on either of the bullet
+strings."
+ :type 'string
+ :group 'allout)
+(make-variable-buffer-local 'allout-distinctive-bullets-string)
+;;;###autoload
+(put 'allout-distinctive-bullets-string 'safe-local-variable 'stringp)
+
+;;;_ = allout-use-mode-specific-leader
+(defcustom allout-use-mode-specific-leader t
"*When non-nil, use mode-specific topic-header prefixes.
-Allout outline mode will use the mode-specific `outline-mode-leaders'
-and/or comment-start string, if any, to lead the topic prefix string,
-so topic headers look like comments in the programming language.
+Allout outline mode will use the mode-specific `allout-mode-leaders' or
+comment-start string, if any, to lead the topic prefix string, so topic
+headers look like comments in the programming language. It will also use
+the comment-start string, with an '_' appended, for `allout-primary-bullet'.
-String values are used as they stand.
+String values are used as literals, not regular expressions, so
+do not escape any regulare-expression characters.
-Value `t' means to first check for assoc value in `outline-mode-leaders'
+Value t means to first check for assoc value in `allout-mode-leaders'
alist, then use comment-start string, if any, then use default \(`.').
-\(See note about use of comment-start strings, below.\)
+\(See note about use of comment-start strings, below.)
-Set to the symbol for either of `outline-mode-leaders' or
+Set to the symbol for either of `allout-mode-leaders' or
`comment-start' to use only one of them, respectively.
-Value `nil' means to always use the default \(`.'\).
-
-comment-start strings that do not end in spaces are tripled, and an
-'_' underscore is tacked on the end, to distinguish them from regular
-comment strings. comment-start strings that do end in spaces are not
-tripled, but an underscore is substituted for the space. \[This
-presumes that the space is for appearance, not comment syntax. You
-can use `outline-mode-leaders' to override this behavior, when
-incorrect.\]")
-;;;_ = outline-mode-leaders
-(defvar outline-mode-leaders '()
- "Specific outline-prefix leading strings per major modes.
-
-Entries will be used in the stead (or lieu) of mode-specific
-comment-start strings. See also `outline-use-mode-specific-leader'.
+Value nil means to always use the default \(`.') and leave
+`allout-primary-bullet' unaltered.
+
+comment-start strings that do not end in spaces are tripled in
+the header-prefix, and an `_' underscore is tacked on the end, to
+distinguish them from regular comment strings. comment-start
+strings that do end in spaces are not tripled, but an underscore
+is substituted for the space. [This presumes that the space is
+for appearance, not comment syntax. You can use
+`allout-mode-leaders' to override this behavior, when
+undesired.]"
+ :type '(choice (const t) (const nil) string
+ (const allout-mode-leaders)
+ (const comment-start))
+ :group 'allout)
+;;;###autoload
+(put 'allout-use-mode-specific-leader 'safe-local-variable
+ '(lambda (x) (or (memq x '(t nil allout-mode-leaders comment-start))
+ (stringp x))))
+;;;_ = allout-mode-leaders
+(defvar allout-mode-leaders '()
+ "Specific allout-prefix leading strings per major modes.
+
+Use this if the mode's comment-start string isn't what you
+prefer, or if the mode lacks a comment-start string. See
+`allout-use-mode-specific-leader' for more details.
If you're constructing a string that will comment-out outline
structuring so it can be included in program code, append an extra
character, like an \"_\" underscore, to distinguish the lead string
-from regular comments that start at bol.")
+from regular comments that start at the beginning-of-line.")
-;;;_ = outline-old-style-prefixes
-(defvar outline-old-style-prefixes nil
- "*When non-nil, use only old-and-crusty outline-mode '*' topic prefixes.
+;;;_ = allout-old-style-prefixes
+(defcustom allout-old-style-prefixes nil
+ "*When non-nil, use only old-and-crusty `outline-mode' `*' topic prefixes.
Non-nil restricts the topic creation and modification
functions to asterix-padded prefixes, so they look exactly
-like the original emacs-outline style prefixes.
+like the original Emacs-outline style prefixes.
Whatever the setting of this variable, both old and new style prefixes
-are always respected by the topic maneuvering functions.")
-(make-variable-buffer-local 'outline-old-style-prefixes)
-;;;_ = outline-stylish-prefixes - alternating bullets
-(defvar outline-stylish-prefixes t
+are always respected by the topic maneuvering functions."
+ :type 'boolean
+ :group 'allout)
+(make-variable-buffer-local 'allout-old-style-prefixes)
+;;;###autoload
+(put 'allout-old-style-prefixes 'safe-local-variable
+ (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil)))))
+;;;_ = allout-stylish-prefixes - alternating bullets
+(defcustom allout-stylish-prefixes t
"*Do fancy stuff with topic prefix bullets according to level, etc.
Non-nil enables topic creation, modification, and repositioning
functions to vary the topic bullet char (the char that marks the topic
depth) just preceding the start of the topic text) according to level.
-Otherwise, only asterisks ('*') and distinctive bullets are used.
+Otherwise, only asterisks (`*') and distinctive bullets are used.
This is how an outline can look (but sans indentation) with stylish
prefixes:
always respected by the topic maneuvering functions, regardless of
this variable setting.
-The setting of this var is not relevant when outline-old-style-prefixes
-is non-nil.")
-(make-variable-buffer-local 'outline-stylish-prefixes)
-
-;;;_ = outline-numbered-bullet
-(defvar outline-numbered-bullet "#"
+The setting of this var is not relevant when `allout-old-style-prefixes'
+is non-nil."
+ :type 'boolean
+ :group 'allout)
+(make-variable-buffer-local 'allout-stylish-prefixes)
+;;;###autoload
+(put 'allout-stylish-prefixes 'safe-local-variable
+ (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil)))))
+
+;;;_ = allout-numbered-bullet
+(defcustom allout-numbered-bullet "#"
"*String designating bullet of topics that have auto-numbering; nil for none.
-Topics having this bullet have automatic maintainence of a sibling
+Topics having this bullet have automatic maintenance of a sibling
sequence-number tacked on, just after the bullet. Conventionally set
to \"#\", you can set it to a bullet of your choice. A nil value
-disables numbering maintainence.")
-(make-variable-buffer-local 'outline-numbered-bullet)
-;;;_ = outline-file-xref-bullet
-(defvar outline-file-xref-bullet "@"
- "*Bullet signifying file cross-references, for `outline-resolve-xref'.
-
-Set this var to the bullet you want to use for file cross-references.
-Set it 'nil' if you want to inhibit this capability.")
+disables numbering maintenance."
+ :type '(choice (const nil) string)
+ :group 'allout)
+(make-variable-buffer-local 'allout-numbered-bullet)
+;;;###autoload
+(put 'allout-numbered-bullet 'safe-local-variable
+ (if (fboundp 'string-or-null-p)
+ 'string-or-null-p
+ '(lambda (x) (or (stringp x) (null x)))))
+;;;_ = allout-file-xref-bullet
+(defcustom allout-file-xref-bullet "@"
+ "*Bullet signifying file cross-references, for `allout-resolve-xref'.
+
+Set this var to the bullet you want to use for file cross-references."
+ :type '(choice (const nil) string)
+ :group 'allout)
+;;;###autoload
+(put 'allout-file-xref-bullet 'safe-local-variable
+ (if (fboundp 'string-or-null-p)
+ 'string-or-null-p
+ '(lambda (x) (or (stringp x) (null x)))))
+;;;_ = allout-presentation-padding
+(defcustom allout-presentation-padding 2
+ "*Presentation-format white-space padding factor, for greater indent."
+ :type 'integer
+ :group 'allout)
+
+(make-variable-buffer-local 'allout-presentation-padding)
+;;;###autoload
+(put 'allout-presentation-padding 'safe-local-variable 'integerp)
+
+;;;_ = allout-abbreviate-flattened-numbering
+(defcustom allout-abbreviate-flattened-numbering nil
+ "*If non-nil, `allout-flatten-exposed-to-buffer' abbreviates topic
+numbers to minimal amount with some context. Otherwise, entire
+numbers are always used."
+ :type 'boolean
+ :group 'allout)
;;;_ + LaTeX formatting
-;;;_ - outline-number-pages
-(defvar outline-number-pages nil
- "*Non-nil turns on page numbering for LaTeX formatting of an outline.")
-;;;_ - outline-label-style
-(defvar outline-label-style "\\large\\bf"
- "*Font and size of labels for LaTeX formatting of an outline.")
-;;;_ - outline-head-line-style
-(defvar outline-head-line-style "\\large\\sl "
- "*Font and size of entries for LaTeX formatting of an outline.")
-;;;_ - outline-body-line-style
-(defvar outline-body-line-style " "
- "*Font and size of entries for LaTeX formatting of an outline.")
-;;;_ - outline-title-style
-(defvar outline-title-style "\\Large\\bf"
- "*Font and size of titles for LaTeX formatting of an outline.")
-;;;_ - outline-title
-(defvar outline-title '(or buffer-file-name (current-buffer-name))
+;;;_ - allout-number-pages
+(defcustom allout-number-pages nil
+ "*Non-nil turns on page numbering for LaTeX formatting of an outline."
+ :type 'boolean
+ :group 'allout)
+;;;_ - allout-label-style
+(defcustom allout-label-style "\\large\\bf"
+ "*Font and size of labels for LaTeX formatting of an outline."
+ :type 'string
+ :group 'allout)
+;;;_ - allout-head-line-style
+(defcustom allout-head-line-style "\\large\\sl "
+ "*Font and size of entries for LaTeX formatting of an outline."
+ :type 'string
+ :group 'allout)
+;;;_ - allout-body-line-style
+(defcustom allout-body-line-style " "
+ "*Font and size of entries for LaTeX formatting of an outline."
+ :type 'string
+ :group 'allout)
+;;;_ - allout-title-style
+(defcustom allout-title-style "\\Large\\bf"
+ "*Font and size of titles for LaTeX formatting of an outline."
+ :type 'string
+ :group 'allout)
+;;;_ - allout-title
+(defcustom allout-title '(or buffer-file-name (buffer-name))
"*Expression to be evaluated to determine the title for LaTeX
-formatted copy.")
-;;;_ - outline-line-skip
-(defvar outline-line-skip ".05cm"
- "*Space between lines for LaTeX formatting of an outline.")
-;;;_ - outline-indent
-(defvar outline-indent ".3cm"
- "*LaTeX formatted depth-indent spacing.")
+formatted copy."
+ :type 'sexp
+ :group 'allout)
+;;;_ - allout-line-skip
+(defcustom allout-line-skip ".05cm"
+ "*Space between lines for LaTeX formatting of an outline."
+ :type 'string
+ :group 'allout)
+;;;_ - allout-indent
+(defcustom allout-indent ".3cm"
+ "*LaTeX formatted depth-indent spacing."
+ :type 'string
+ :group 'allout)
+
+;;;_ + Topic encryption
+;;;_ = allout-encryption group
+(defgroup allout-encryption nil
+ "Settings for topic encryption features of allout outliner."
+ :group 'allout)
+;;;_ = allout-topic-encryption-bullet
+(defcustom allout-topic-encryption-bullet "~"
+ "*Bullet signifying encryption of the entry's body."
+ :type '(choice (const nil) string)
+ :version "22.0"
+ :group 'allout-encryption)
+;;;_ = allout-passphrase-verifier-handling
+(defcustom allout-passphrase-verifier-handling t
+ "*Enable use of symmetric encryption passphrase verifier if non-nil.
+
+See the docstring for the `allout-enable-file-variable-adjustment'
+variable for details about allout ajustment of file variables."
+ :type 'boolean
+ :version "22.0"
+ :group 'allout-encryption)
+(make-variable-buffer-local 'allout-passphrase-verifier-handling)
+;;;_ = allout-passphrase-hint-handling
+(defcustom allout-passphrase-hint-handling 'always
+ "*Dictate outline encryption passphrase reminder handling:
+
+ always - always show reminder when prompting
+ needed - show reminder on passphrase entry failure
+ disabled - never present or adjust reminder
+
+See the docstring for the `allout-enable-file-variable-adjustment'
+variable for details about allout ajustment of file variables."
+ :type '(choice (const always)
+ (const needed)
+ (const disabled))
+ :version "22.0"
+ :group 'allout-encryption)
+(make-variable-buffer-local 'allout-passphrase-hint-handling)
+;;;_ = allout-encrypt-unencrypted-on-saves
+(defcustom allout-encrypt-unencrypted-on-saves t
+ "*When saving, should topics pending encryption be encrypted?
+
+The idea is to prevent file-system exposure of any un-encrypted stuff, and
+mostly covers both deliberate file writes and auto-saves.
+
+ - Yes: encrypt all topics pending encryption, even if it's the one
+ currently being edited. \(In that case, the currently edited topic
+ will be automatically decrypted before any user interaction, so they
+ can continue editing but the copy on the file system will be
+ encrypted.)
+ Auto-saves will use the \"All except current topic\" mode if this
+ one is selected, to avoid practical difficulties - see below.
+ - All except current topic: skip the topic currently being edited, even if
+ it's pending encryption. This may expose the current topic on the
+ file sytem, but avoids the nuisance of prompts for the encryption
+ passphrase in the middle of editing for, eg, autosaves.
+ This mode is used for auto-saves for both this option and \"Yes\".
+ - No: leave it to the user to encrypt any unencrypted topics.
+
+For practical reasons, auto-saves always use the 'except-current policy
+when auto-encryption is enabled. \(Otherwise, spurious passphrase prompts
+and unavoidable timing collisions are too disruptive.) If security for a
+file requires that even the current topic is never auto-saved in the clear,
+disable auto-saves for that file."
+
+ :type '(choice (const :tag "Yes" t)
+ (const :tag "All except current topic" except-current)
+ (const :tag "No" nil))
+ :version "22.0"
+ :group 'allout-encryption)
+(make-variable-buffer-local 'allout-encrypt-unencrypted-on-saves)
+
+;;;_ + Developer
+;;;_ = allout-developer group
+(defgroup allout-developer nil
+ "Settings for topic encryption features of allout outliner."
+ :group 'allout)
+;;;_ = allout-run-unit-tests-on-load
+(defcustom allout-run-unit-tests-on-load nil
+ "*When non-nil, unit tests will be run at end of loading the allout module.
+
+Generally, allout code developers are the only ones who'll want to set this.
+
+\(If set, this makes it an even better practice to exercise changes by
+doing byte-compilation with a repeat count, so the file is loaded after
+compilation.)
+
+See `allout-run-unit-tests' to see what's run."
+ :type 'boolean
+ :group 'allout-developer)
;;;_ + Miscellaneous customization
-;;;_ = outline-keybindings-list
-;;; You have to reactivate outline-mode - '(outline-mode t)' - to
+;;;_ = allout-command-prefix
+(defcustom allout-command-prefix "\C-c "
+ "*Key sequence to be used as prefix for outline mode command key bindings.
+
+Default is '\C-c<space>'; just '\C-c' is more short-and-sweet, if you're
+willing to let allout use a bunch of \C-c keybindings."
+ :type 'string
+ :group 'allout)
+
+;;;_ = allout-keybindings-list
+;;; You have to reactivate allout-mode - `(allout-mode t)' - to
;;; institute changes to this var.
-(defvar outline-keybindings-list ()
- "*List of outline-mode key / function bindings.
-
-These bindings will be locally bound on the outline-mode-map. The
-keys will be prefixed by outline-command-prefix, unless the cell
-contains a third, no-nil element, in which case the initial string
-will be used as is.")
-(setq outline-keybindings-list
+(defvar allout-keybindings-list ()
+ "*List of `allout-mode' key / function bindings, for `allout-mode-map'.
+
+String or vector key will be prefaced with `allout-command-prefix',
+unless optional third, non-nil element is present.")
+(setq allout-keybindings-list
'(
; Motion commands:
- ("?t" outline-latexify-exposed)
- ("\C-n" outline-next-visible-heading)
- ("\C-p" outline-previous-visible-heading)
- ("\C-u" outline-up-current-level)
- ("\C-f" outline-forward-current-level)
- ("\C-b" outline-backward-current-level)
- ("\C-a" outline-beginning-of-current-entry)
- ("\C-e" outline-end-of-current-entry)
- ;;("\C-n" outline-next-line-or-topic)
- ;;("\C-p" outline-previous-line-or-topic)
+ ("\C-n" allout-next-visible-heading)
+ ("\C-p" allout-previous-visible-heading)
+ ("\C-u" allout-up-current-level)
+ ("\C-f" allout-forward-current-level)
+ ("\C-b" allout-backward-current-level)
+ ("\C-a" allout-beginning-of-current-entry)
+ ("\C-e" allout-end-of-entry)
; Exposure commands:
- ("\C-i" outline-show-children)
- ("\C-s" outline-show-current-subtree)
- ("\C-h" outline-hide-current-subtree)
- ("\C-o" outline-show-current-entry)
- ("!" outline-show-all)
+ ("\C-i" allout-show-children)
+ ("\C-s" allout-show-current-subtree)
+ ("\C-h" allout-hide-current-subtree)
+ ("h" allout-hide-current-subtree)
+ ("\C-o" allout-show-current-entry)
+ ("!" allout-show-all)
+ ("x" allout-toggle-current-subtree-encryption)
; Alteration commands:
- (" " outline-open-sibtopic)
- ("." outline-open-subtopic)
- ("," outline-open-supertopic)
- ("'" outline-shift-in)
- (">" outline-shift-in)
- ("<" outline-shift-out)
- ("\C-m" outline-rebullet-topic)
- ("b" outline-rebullet-current-heading)
- ("#" outline-number-siblings)
- ("\C-k" outline-kill-line t)
- ("\C-y" outline-yank t)
- ("\M-y" outline-yank-pop t)
- ("\C-k" outline-kill-topic)
+ (" " allout-open-sibtopic)
+ ("." allout-open-subtopic)
+ ("," allout-open-supertopic)
+ ("'" allout-shift-in)
+ (">" allout-shift-in)
+ ("<" allout-shift-out)
+ ("\C-m" allout-rebullet-topic)
+ ("*" allout-rebullet-current-heading)
+ ("#" allout-number-siblings)
+ ("\C-k" allout-kill-line t)
+ ("\M-k" allout-copy-line-as-kill t)
+ ("\C-y" allout-yank t)
+ ("\M-y" allout-yank-pop t)
+ ("\C-k" allout-kill-topic)
+ ("\M-k" allout-copy-topic-as-kill)
; Miscellaneous commands:
- ("\C-@" outline-mark-topic)
- ("@" outline-resolve-xref)
- ("?c" outline-copy-exposed)))
-
-;;;_ = outline-command-prefix
-(defvar outline-command-prefix "\C-c"
- "*Key sequence to be used as prefix for outline mode command key bindings.")
-
-;;;_ = outline-enwrap-isearch-mode
-(defvar outline-enwrap-isearch-mode t
- "*Set non-nil to enable automatic exposure of concealed isearch targets.
-
-If non-nil, isearch will expose hidden text encountered in the course
-of a search, and to reconceal it if the search is continued past it.")
-
-;;;_ = outline-use-hanging-indents
-(defvar outline-use-hanging-indents t
+ ;([?\C-\ ] allout-mark-topic)
+ ("@" allout-resolve-xref)
+ ("=c" allout-copy-exposed-to-buffer)
+ ("=i" allout-indented-exposed-to-buffer)
+ ("=t" allout-latexify-exposed)
+ ("=p" allout-flatten-exposed-to-buffer)))
+
+;;;_ = allout-inhibit-auto-fill
+(defcustom allout-inhibit-auto-fill nil
+ "*If non-nil, auto-fill will be inhibited in the allout buffers.
+
+You can customize this setting to set it for all allout buffers, or set it
+in individual buffers if you want to inhibit auto-fill only in particular
+buffers. \(You could use a function on `allout-mode-hook' to inhibit
+auto-fill according, eg, to the major mode.\)
+
+If you don't set this and auto-fill-mode is enabled, allout will use the
+value that `normal-auto-fill-function', if any, when allout mode starts, or
+else allout's special hanging-indent maintaining auto-fill function,
+`allout-auto-fill'."
+ :type 'boolean
+ :group 'allout)
+(make-variable-buffer-local 'allout-inhibit-auto-fill)
+
+;;;_ = allout-use-hanging-indents
+(defcustom allout-use-hanging-indents t
"*If non-nil, topic body text auto-indent defaults to indent of the header.
Ie, it is indented to be just past the header prefix. This is
relevant mostly for use with indented-text-mode, or other situations
-where auto-fill occurs.
-
-[This feature no longer depends in any way on the 'filladapt.el'
-lisp-archive package.]")
-(make-variable-buffer-local 'outline-use-hanging-indents)
-
-;;;_ = outline-reindent-bodies
-(defvar outline-reindent-bodies (if outline-use-hanging-indents
+where auto-fill occurs."
+ :type 'boolean
+ :group 'allout)
+(make-variable-buffer-local 'allout-use-hanging-indents)
+;;;###autoload
+(put 'allout-use-hanging-indents 'safe-local-variable
+ (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil)))))
+
+;;;_ = allout-reindent-bodies
+(defcustom allout-reindent-bodies (if allout-use-hanging-indents
'text)
"*Non-nil enables auto-adjust of topic body hanging indent with depth shifts.
their topic header are reindented to correspond with depth shifts of
the header.
-A value of `t' enables reindent in non-programming-code buffers, ie
+A value of t enables reindent in non-programming-code buffers, ie
those that do not have the variable `comment-start' set. A value of
-`force' enables reindent whether or not `comment-start' is set.")
+`force' enables reindent whether or not `comment-start' is set."
+ :type '(choice (const nil) (const t) (const text) (const force))
+ :group 'allout)
-(make-variable-buffer-local 'outline-reindent-bodies)
+(make-variable-buffer-local 'allout-reindent-bodies)
+;;;###autoload
+(put 'allout-reindent-bodies 'safe-local-variable
+ '(lambda (x) (memq x '(nil t text force))))
-;;;_ = outline-inhibit-protection
-(defvar outline-inhibit-protection nil
- "*Non-nil disables warnings and confirmation-checks for concealed-text edits.
+;;;_ = allout-enable-file-variable-adjustment
+(defcustom allout-enable-file-variable-adjustment t
+ "*If non-nil, some allout outline actions edit Emacs local file var text.
-Outline mode uses emacs change-triggered functions to detect unruly
-changes to concealed regions. Set this var non-nil to disable the
-protection, potentially increasing text-entry responsiveness a bit.
+This can range from changes to existing entries, addition of new ones,
+and creation of a new local variables section when necessary.
-This var takes effect at outline-mode activation, so you may have to
-deactivate and then reactivate the mode if you want to toggle the
-behavior.")
+Emacs file variables adjustments are also inhibited if `enable-local-variables'
+is nil.
+
+Operations potentially causing edits include allout encryption routines.
+For details, see `allout-toggle-current-subtree-encryption's docstring."
+ :type 'boolean
+ :group 'allout)
+(make-variable-buffer-local 'allout-enable-file-variable-adjustment)
;;;_* CODE - no user customizations below.
-;;;_ #1 Internal Outline Formatting and Configuration
-;;;_ - Version
-;;;_ = outline-version
-(defvar outline-version
- (let ((rcs-rev "Revision: 4.3"))
- (condition-case err
- (save-match-data
- (string-match "Revision: \\([0-9]+\\.[0-9]+\\)" rcs-rev)
- (substring rcs-rev (match-beginning 1) (match-end 1)))
- (error rcs-rev)))
- "Revision number of currently loaded outline package. \(allout.el)")
-;;;_ > outline-version
-(defun outline-version (&optional here)
+;;;_ #1 Internal Outline Formatting and Configuration
+;;;_ : Version
+;;;_ = allout-version
+(defvar allout-version "2.2.1"
+ "Version of currently loaded outline package. \(allout.el)")
+;;;_ > allout-version
+(defun allout-version (&optional here)
"Return string describing the loaded outline version."
(interactive "P")
- (let ((msg (concat "Allout Outline Mode v " outline-version)))
- (if here (insert-string msg))
+ (let ((msg (concat "Allout Outline Mode v " allout-version)))
+ (if here (insert msg))
(message "%s" msg)
msg))
-;;;_ - Topic header format
-;;;_ = outline-regexp
-(defvar outline-regexp ""
+;;;_ : Mode activation (defined here because it's referenced early)
+;;;_ = allout-mode
+(defvar allout-mode nil "Allout outline mode minor-mode flag.")
+(make-variable-buffer-local 'allout-mode)
+;;;_ = allout-layout nil
+(defvar allout-layout nil ; LEAVE GLOBAL VALUE NIL - see docstring.
+ "Buffer-specific setting for allout layout.
+
+In buffers where this is non-nil \(and if `allout-init' has been run, to
+enable this behavior), `allout-mode' will be automatically activated. The
+layout dictated by the value will be used to set the initial exposure when
+`allout-mode' is activated.
+
+\*You should not setq-default this variable non-nil unless you want every
+visited file to be treated as an allout file.*
+
+The value would typically be set by a file local variable. For
+example, the following lines at the bottom of an Emacs Lisp file:
+
+;;;Local variables:
+;;;allout-layout: \(0 : -1 -1 0)
+;;;End:
+
+dictate activation of `allout-mode' mode when the file is visited
+\(presuming allout-init was already run), followed by the
+equivalent of `\(allout-expose-topic 0 : -1 -1 0)'. \(This is
+the layout used for the allout.el source file.)
+
+`allout-default-layout' describes the specification format.
+`allout-layout' can additionally have the value `t', in which
+case the value of `allout-default-layout' is used.")
+(make-variable-buffer-local 'allout-layout)
+;;;###autoload
+(put 'allout-layout 'safe-local-variable
+ '(lambda (x) (or (numberp x) (listp x) (memq x '(: * + -)))))
+
+;;;_ : Topic header format
+;;;_ = allout-regexp
+(defvar allout-regexp ""
"*Regular expression to match the beginning of a heading line.
Any line whose beginning matches this regexp is considered a
heading. This var is set according to the user configuration vars
-by set-outline-regexp.")
-(make-variable-buffer-local 'outline-regexp)
-;;;_ = outline-bullets-string
-(defvar outline-bullets-string ""
+by `set-allout-regexp'.")
+(make-variable-buffer-local 'allout-regexp)
+;;;_ = allout-bullets-string
+(defvar allout-bullets-string ""
"A string dictating the valid set of outline topic bullets.
-This var should *not* be set by the user - it is set by 'set-outline-regexp',
-and is produced from the elements of 'outline-plain-bullets-string'
-and 'outline-distinctive-bullets-string'.")
-(make-variable-buffer-local 'outline-bullets-string)
-;;;_ = outline-bullets-string-len
-(defvar outline-bullets-string-len 0
- "Length of current buffers' outline-plain-bullets-string.")
-(make-variable-buffer-local 'outline-bullets-string-len)
-;;;_ = outline-line-boundary-regexp
-(defvar outline-line-boundary-regexp ()
- "Outline-regexp with outline-style beginning-of-line anchor.
-
-\(Ie, C-j, *or* C-m, for prefixes of hidden topics). This is properly
-set when outline-regexp is produced by 'set-outline-regexp', so
-that (match-beginning 2) and (match-end 2) delimit the prefix.")
-(make-variable-buffer-local 'outline-line-boundary-regexp)
-;;;_ = outline-bob-regexp
-(defvar outline-bob-regexp ()
- "Like outline-line-boundary-regexp, for headers at beginning of buffer.
-\(match-beginning 2) and (match-end 2) delimit the prefix.")
-(make-variable-buffer-local 'outline-bob-regexp)
-;;;_ = outline-header-subtraction
-(defvar outline-header-subtraction (1- (length outline-header-prefix))
- "Outline-header prefix length to subtract when computing topic depth.")
-(make-variable-buffer-local 'outline-header-subtraction)
-;;;_ = outline-plain-bullets-string-len
-(defvar outline-plain-bullets-string-len (length outline-plain-bullets-string)
- "Length of outline-plain-bullets-string, updated by set-outline-regexp.")
-(make-variable-buffer-local 'outline-plain-bullets-string-len)
-
-
-;;;_ X outline-reset-header-lead (header-lead)
-(defun outline-reset-header-lead (header-lead)
+This var should *not* be set by the user - it is set by `set-allout-regexp',
+and is produced from the elements of `allout-plain-bullets-string'
+and `allout-distinctive-bullets-string'.")
+(make-variable-buffer-local 'allout-bullets-string)
+;;;_ = allout-bullets-string-len
+(defvar allout-bullets-string-len 0
+ "Length of current buffers' `allout-plain-bullets-string'.")
+(make-variable-buffer-local 'allout-bullets-string-len)
+;;;_ = allout-depth-specific-regexp
+(defvar allout-depth-specific-regexp ""
+ "*Regular expression to match a heading line prefix for a particular depth.
+
+This expression is used to search for depth-specific topic
+headers at depth 2 and greater. Use `allout-depth-one-regexp'
+for to seek topics at depth one.
+
+This var is set according to the user configuration vars by
+`set-allout-regexp'. It is prepared with format strings for two
+decimal numbers, which should each be one less than the depth of the
+topic prefix to be matched.")
+(make-variable-buffer-local 'allout-depth-specific-regexp)
+;;;_ = allout-depth-one-regexp
+(defvar allout-depth-one-regexp ""
+ "*Regular expression to match a heading line prefix for depth one.
+
+This var is set according to the user configuration vars by
+`set-allout-regexp'. It is prepared with format strings for two
+decimal numbers, which should each be one less than the depth of the
+topic prefix to be matched.")
+(make-variable-buffer-local 'allout-depth-one-regexp)
+;;;_ = allout-line-boundary-regexp
+(defvar allout-line-boundary-regexp ()
+ "`allout-regexp' with outline style beginning-of-line anchor.
+
+This is properly set by `set-allout-regexp'.")
+(make-variable-buffer-local 'allout-line-boundary-regexp)
+;;;_ = allout-bob-regexp
+(defvar allout-bob-regexp ()
+ "Like `allout-line-boundary-regexp', for headers at beginning of buffer.")
+(make-variable-buffer-local 'allout-bob-regexp)
+;;;_ = allout-header-subtraction
+(defvar allout-header-subtraction (1- (length allout-header-prefix))
+ "Allout-header prefix length to subtract when computing topic depth.")
+(make-variable-buffer-local 'allout-header-subtraction)
+;;;_ = allout-plain-bullets-string-len
+(defvar allout-plain-bullets-string-len (length allout-plain-bullets-string)
+ "Length of `allout-plain-bullets-string', updated by `set-allout-regexp'.")
+(make-variable-buffer-local 'allout-plain-bullets-string-len)
+
+;;;_ = allout-doublecheck-at-and-shallower
+(defconst allout-doublecheck-at-and-shallower 2
+ "Validate apparent topics of this depth and shallower as being non-aberrant.
+
+Verified with `allout-aberrant-container-p'. This check's usefulness is
+limited to shallow prospects, because the determination of aberrance
+depends on the mistaken item being followed by a legitimate item of
+excessively greater depth.
+
+A level of 2 is safest, so that yanks, which must ignore
+aberrance while rectifying the yanked text to their new location,
+is least likely to be fooled by aberrant topics in the yanked
+text.")
+;;;_ X allout-reset-header-lead (header-lead)
+(defun allout-reset-header-lead (header-lead)
"*Reset the leading string used to identify topic headers."
(interactive "sNew lead string: ")
- (setq outline-header-prefix header-lead)
- (setq outline-header-subtraction (1- (length outline-header-prefix)))
- (set-outline-regexp))
-;;;_ X outline-lead-with-comment-string (header-lead)
-(defun outline-lead-with-comment-string (&optional header-lead)
+ (setq allout-header-prefix header-lead)
+ (setq allout-header-subtraction (1- (length allout-header-prefix)))
+ (set-allout-regexp))
+;;;_ X allout-lead-with-comment-string (header-lead)
+(defun allout-lead-with-comment-string (&optional header-lead)
"*Set the topic-header leading string to specified string.
Useful when for encapsulating outline structure in programming
(if (not (stringp header-lead))
(setq header-lead (read-string
"String prefix for topic headers: ")))
- (setq outline-reindent-bodies nil)
- (outline-reset-header-lead header-lead)
+ (setq allout-reindent-bodies nil)
+ (allout-reset-header-lead header-lead)
header-lead)
-;;;_ > outline-infer-header-lead ()
-(defun outline-infer-header-lead ()
- "Determine appropriate `outline-header-prefix'.
+;;;_ > allout-infer-header-lead-and-primary-bullet ()
+(defun allout-infer-header-lead-and-primary-bullet ()
+ "Determine appropriate `allout-header-prefix' and `allout-primary-bullet'.
Works according to settings of:
`comment-start'
- `outline-header-prefix' (default)
- `outline-use-mode-specific-leader'
-and `outline-mode-leaders'.
+ `allout-header-prefix' (default)
+ `allout-use-mode-specific-leader'
+and `allout-mode-leaders'.
-Apply this via \(re\)activation of `outline-mode', rather than
+Apply this via \(re)activation of `allout-mode', rather than
invoking it directly."
- (let* ((use-leader (and (boundp 'outline-use-mode-specific-leader)
- (if (or (stringp outline-use-mode-specific-leader)
- (memq outline-use-mode-specific-leader
- '(outline-mode-leaders
+ (let* ((use-leader (and (boundp 'allout-use-mode-specific-leader)
+ (if (or (stringp allout-use-mode-specific-leader)
+ (memq allout-use-mode-specific-leader
+ '(allout-mode-leaders
comment-start
t)))
- outline-use-mode-specific-leader
+ allout-use-mode-specific-leader
;; Oops - garbled value, equate with effect of 't:
t)))
(leader
((not use-leader) nil)
;; Use the explicitly designated leader:
((stringp use-leader) use-leader)
- (t (or (and (memq use-leader '(t outline-mode-leaders))
+ (t (or (and (memq use-leader '(t allout-mode-leaders))
;; Get it from outline mode leaders?
- (cdr (assq major-mode outline-mode-leaders)))
- ;; ... didn't get from outline-mode-leaders...
+ (cdr (assq major-mode allout-mode-leaders)))
+ ;; ... didn't get from allout-mode-leaders...
(and (memq use-leader '(t comment-start))
comment-start
;; Use comment-start, maybe tripled, and with
- ;; underscore:
+ ;; underscore:
(concat
(if (string= " "
(substring comment-start
"_")))))))
(if (not leader)
nil
- (if (string= leader outline-header-prefix)
- nil ; no change, nothing to do.
- (setq outline-header-prefix leader)
- outline-header-prefix))))
-;;;_ > outline-infer-body-reindent ()
-(defun outline-infer-body-reindent ()
- "Determine proper setting for `outline-reindent-bodies'.
-
-Depends on default setting of `outline-reindent-bodies' \(which see)
+ (setq allout-header-prefix leader)
+ (if (not allout-old-style-prefixes)
+ ;; setting allout-primary-bullet makes the top level topics use -
+ ;; actually, be - the special prefix:
+ (setq allout-primary-bullet leader))
+ allout-header-prefix)))
+(defalias 'allout-infer-header-lead
+ 'allout-infer-header-lead-and-primary-bullet)
+;;;_ > allout-infer-body-reindent ()
+(defun allout-infer-body-reindent ()
+ "Determine proper setting for `allout-reindent-bodies'.
+
+Depends on default setting of `allout-reindent-bodies' \(which see)
and presence of setting for `comment-start', to tell whether the
file is programming code."
- (if (and outline-reindent-bodies
+ (if (and allout-reindent-bodies
comment-start
- (not (eq 'force outline-reindent-bodies)))
- (setq outline-reindent-bodies nil)))
-;;;_ > set-outline-regexp ()
-(defun set-outline-regexp ()
+ (not (eq 'force allout-reindent-bodies)))
+ (setq allout-reindent-bodies nil)))
+;;;_ > set-allout-regexp ()
+(defun set-allout-regexp ()
"Generate proper topic-header regexp form for outline functions.
-Works with respect to `outline-plain-bullets-string' and
-`outline-distinctive-bullets-string'."
+Works with respect to `allout-plain-bullets-string' and
+`allout-distinctive-bullets-string'.
+
+Also refresh various data structures that hinge on the regexp."
(interactive)
- ;; Derive outline-bullets-string from user configured components:
- (setq outline-bullets-string "")
- (let ((strings (list 'outline-plain-bullets-string
- 'outline-distinctive-bullets-string))
+ ;; Derive allout-bullets-string from user configured components:
+ (setq allout-bullets-string "")
+ (let ((strings (list 'allout-plain-bullets-string
+ 'allout-distinctive-bullets-string
+ 'allout-primary-bullet))
cur-string
cur-len
cur-char
- cur-char-string
- index
- new-string)
+ index)
(while strings
- (setq new-string "") (setq index 0)
+ (setq index 0)
(setq cur-len (length (setq cur-string (symbol-value (car strings)))))
(while (< index cur-len)
(setq cur-char (aref cur-string index))
- (setq outline-bullets-string
- (concat outline-bullets-string
+ (setq allout-bullets-string
+ (concat allout-bullets-string
(cond
; Single dash would denote a
; sequence, repeated denotes
(setq index (1+ index)))
(setq strings (cdr strings)))
)
- ;; Derive next for repeated use in outline-pending-bullet:
- (setq outline-plain-bullets-string-len (length outline-plain-bullets-string))
- (setq outline-header-subtraction (1- (length outline-header-prefix)))
- ;; Produce the new outline-regexp:
- (setq outline-regexp (concat "\\(\\"
- outline-header-prefix
- "[ \t]*["
- outline-bullets-string
- "]\\)\\|\\"
- outline-primary-bullet
- "+\\|\^l"))
- (setq outline-line-boundary-regexp
- (concat "\\([\n\r]\\)\\(" outline-regexp "\\)"))
- (setq outline-bob-regexp
- (concat "\\(\\`\\)\\(" outline-regexp "\\)"))
- )
-;;;_ - Key bindings
-;;;_ = outline-mode-map
-(defvar outline-mode-map nil "Keybindings for (allout) outline minor mode.")
-;;;_ > produce-outline-mode-map (keymap-alist &optional base-map)
-(defun produce-outline-mode-map (keymap-list &optional base-map)
- "Produce keymap for use as outline-mode-map, from keymap-list.
+ ;; Derive next for repeated use in allout-pending-bullet:
+ (setq allout-plain-bullets-string-len (length allout-plain-bullets-string))
+ (setq allout-header-subtraction (1- (length allout-header-prefix)))
+
+ (let (new-part old-part)
+ (setq new-part (concat "\\("
+ (regexp-quote allout-header-prefix)
+ "[ \t]*"
+ ;; already regexp-quoted in a custom way:
+ "[" allout-bullets-string "]"
+ "\\)")
+ old-part (concat "\\("
+ (regexp-quote allout-primary-bullet)
+ "\\|"
+ (regexp-quote allout-header-prefix)
+ "\\)"
+ "+"
+ " ?[^" allout-primary-bullet "]")
+ allout-regexp (concat new-part
+ "\\|"
+ old-part
+ "\\|\^l")
+
+ allout-line-boundary-regexp (concat "\n" new-part
+ "\\|"
+ "\n" old-part)
+
+ allout-bob-regexp (concat "\\`" new-part
+ "\\|"
+ "\\`" old-part))
+
+ (setq allout-depth-specific-regexp
+ (concat "\\(^\\|\\`\\)"
+ "\\("
+
+ ;; new-style spacers-then-bullet string:
+ "\\("
+ (allout-format-quote (regexp-quote allout-header-prefix))
+ " \\{%s\\}"
+ "[" (allout-format-quote allout-bullets-string) "]"
+ "\\)"
+
+ ;; old-style all-bullets string, if primary not multi-char:
+ (if (< 0 allout-header-subtraction)
+ ""
+ (concat "\\|\\("
+ (allout-format-quote
+ (regexp-quote allout-primary-bullet))
+ (allout-format-quote
+ (regexp-quote allout-primary-bullet))
+ (allout-format-quote
+ (regexp-quote allout-primary-bullet))
+ "\\{%s\\}"
+ ;; disqualify greater depths:
+ "[^"
+ (allout-format-quote allout-primary-bullet)
+ "]\\)"
+ ))
+ "\\)"
+ ))
+ (setq allout-depth-one-regexp
+ (concat "\\(^\\|\\`\\)"
+ "\\("
+
+ "\\("
+ (regexp-quote allout-header-prefix)
+ ;; disqualify any bullet char following any amount of
+ ;; intervening whitespace:
+ " *"
+ (concat "[^ " allout-bullets-string "]")
+ "\\)"
+ (if (< 0 allout-header-subtraction)
+ ;; Need not support anything like the old
+ ;; bullet style if the prefix is multi-char.
+ ""
+ (concat "\\|"
+ (regexp-quote allout-primary-bullet)
+ ;; disqualify deeper primary-bullet sequences:
+ "[^" allout-primary-bullet "]"))
+ "\\)"
+ ))))
+;;;_ : Key bindings
+;;;_ = allout-mode-map
+(defvar allout-mode-map nil "Keybindings for (allout) outline minor mode.")
+;;;_ > produce-allout-mode-map (keymap-alist &optional base-map)
+(defun produce-allout-mode-map (keymap-list &optional base-map)
+ "Produce keymap for use as allout-mode-map, from KEYMAP-LIST.
Built on top of optional BASE-MAP, or empty sparse map if none specified.
-See doc string for outline-keybindings-list for format of binding list."
- (let ((map (or base-map (make-sparse-keymap))))
- (mapcar (lambda (cell)
- (apply 'define-key map (if (null (cdr (cdr cell)))
- (cons (concat outline-command-prefix
- (car cell))
- (cdr cell))
- (list (car cell) (car (cdr cell))))))
+See doc string for allout-keybindings-list for format of binding list."
+ (let ((map (or base-map (make-sparse-keymap)))
+ (pref (list allout-command-prefix)))
+ (mapcar (function
+ (lambda (cell)
+ (let ((add-pref (null (cdr (cdr cell))))
+ (key-suff (list (car cell))))
+ (apply 'define-key
+ (list map
+ (apply 'concat (if add-pref
+ (append pref key-suff)
+ key-suff))
+ (car (cdr cell)))))))
keymap-list)
map))
-;;;_ = outline-prior-bindings - being deprecated.
-(defvar outline-prior-bindings nil
- "Variable for use in V18, with outline-added-bindings, for
-resurrecting, on mode deactivation, bindings that existed before
-activation. Being deprecated.")
-;;;_ = outline-added-bindings - being deprecated
-(defvar outline-added-bindings nil
- "Variable for use in V18, with outline-prior-bindings, for
-resurrecting, on mode deactivation, bindings that existed before
-activation. Being deprecated.")
-;;;_ - Mode-Specific Variable Maintenance Utilities
-;;;_ = outline-mode-prior-settings
-(defvar outline-mode-prior-settings nil
- "Internal outline mode use; settings to be resumed on mode deactivation.")
-(make-variable-buffer-local 'outline-mode-prior-settings)
-;;;_ > outline-resumptions (name &optional value)
-(defun outline-resumptions (name &optional value)
-
- "Registers or resumes settings over outline-mode activation/deactivation.
-
-First arg is NAME of variable affected. Optional second arg is list
-containing outline-mode-specific VALUE to be imposed on named
-variable, and to be registered. (It's a list so you can specify
-registrations of null values.) If no value is specified, the
-registered value is returned (encapsulated in the list, so the caller
-can distinguish nil vs no value), and the registration is popped
-from the list."
-
- (let ((on-list (assq name outline-mode-prior-settings))
- prior-capsule ; By 'capsule' i mean a list
- ; containing a value, so we can
- ; distinguish nil from no value.
- )
-
- (if value
-
- ;; Registering:
- (progn
- (if on-list
- nil ; Already preserved prior value - don't mess with it.
- ;; Register the old value, or nil if previously unbound:
- (setq outline-mode-prior-settings
- (cons (list name
- (if (boundp name) (list (symbol-value name))))
- outline-mode-prior-settings)))
- ; And impose the new value, locally:
- (progn (make-local-variable name)
- (set name (car value))))
-
- ;; Relinquishing:
- (if (not on-list)
-
- ;; Oops, not registered - leave it be:
- nil
-
- ;; Some registration:
- ; reestablish it:
- (setq prior-capsule (car (cdr on-list)))
- (if prior-capsule
- (set name (car prior-capsule)) ; Some prior value - reestablish it.
- (makunbound name)) ; Previously unbound - demolish var.
- ; Remove registration:
- (let (rebuild)
- (while outline-mode-prior-settings
- (if (not (eq (car outline-mode-prior-settings)
- on-list))
- (setq rebuild
- (cons (car outline-mode-prior-settings)
- rebuild)))
- (setq outline-mode-prior-settings
- (cdr outline-mode-prior-settings)))
- (setq outline-mode-prior-settings rebuild)))))
- )
-;;;_ - Mode-specific incidentals
-;;;_ = outline-during-write-cue nil
-(defvar outline-during-write-cue nil
- "Used to inhibit outline change-protection during file write.
-
-See also `outline-post-command-business', `outline-write-file-hook',
-`outline-before-change-protect', and `outline-post-command-business'
-functions.")
-;;;_ = outline-override-protect nil
-(defvar outline-override-protect nil
- "Used in outline-mode for regulate of concealed-text protection mechanism.
-
-Allout outline mode regulates alteration of concealed text to protect
-against inadvertant, unnoticed changes. This is for use by specific,
-native outline functions to temporarily override that protection.
-It's automatically reset to nil after every buffer modification.")
-(make-variable-buffer-local 'outline-override-protect)
-;;;_ > outline-unprotected (expr)
-(defmacro outline-unprotected (expr)
- "Evaluate EXPRESSION with `outline-override-protect' let-bound 't'."
- (` (let ((outline-override-protect t))
- (, expr))))
-;;;_ = outline-undo-aggregation
-(defvar outline-undo-aggregation 30
- "Amount of successive self-insert actions to bunch together per undo.
-
-This is purely a kludge variable, regulating the compensation for a bug in
-the way that before-change-function and undo interact.")
-(make-variable-buffer-local 'outline-undo-aggregation)
+;;;_ : Menu bar
+(defvar allout-mode-exposure-menu)
+(defvar allout-mode-editing-menu)
+(defvar allout-mode-navigation-menu)
+(defvar allout-mode-misc-menu)
+(defun produce-allout-mode-menubar-entries ()
+ (require 'easymenu)
+ (easy-menu-define allout-mode-exposure-menu
+ allout-mode-map
+ "Allout outline exposure menu."
+ '("Exposure"
+ ["Show Entry" allout-show-current-entry t]
+ ["Show Children" allout-show-children t]
+ ["Show Subtree" allout-show-current-subtree t]
+ ["Hide Subtree" allout-hide-current-subtree t]
+ ["Hide Leaves" allout-hide-current-leaves t]
+ "----"
+ ["Show All" allout-show-all t]))
+ (easy-menu-define allout-mode-editing-menu
+ allout-mode-map
+ "Allout outline editing menu."
+ '("Headings"
+ ["Open Sibling" allout-open-sibtopic t]
+ ["Open Subtopic" allout-open-subtopic t]
+ ["Open Supertopic" allout-open-supertopic t]
+ "----"
+ ["Shift Topic In" allout-shift-in t]
+ ["Shift Topic Out" allout-shift-out t]
+ ["Rebullet Topic" allout-rebullet-topic t]
+ ["Rebullet Heading" allout-rebullet-current-heading t]
+ ["Number Siblings" allout-number-siblings t]
+ "----"
+ ["Toggle Topic Encryption"
+ allout-toggle-current-subtree-encryption
+ (> (allout-current-depth) 1)]))
+ (easy-menu-define allout-mode-navigation-menu
+ allout-mode-map
+ "Allout outline navigation menu."
+ '("Navigation"
+ ["Next Visible Heading" allout-next-visible-heading t]
+ ["Previous Visible Heading"
+ allout-previous-visible-heading t]
+ "----"
+ ["Up Level" allout-up-current-level t]
+ ["Forward Current Level" allout-forward-current-level t]
+ ["Backward Current Level"
+ allout-backward-current-level t]
+ "----"
+ ["Beginning of Entry"
+ allout-beginning-of-current-entry t]
+ ["End of Entry" allout-end-of-entry t]
+ ["End of Subtree" allout-end-of-current-subtree t]))
+ (easy-menu-define allout-mode-misc-menu
+ allout-mode-map
+ "Allout outlines miscellaneous bindings."
+ '("Misc"
+ ["Version" allout-version t]
+ "----"
+ ["Duplicate Exposed" allout-copy-exposed-to-buffer t]
+ ["Duplicate Exposed, numbered"
+ allout-flatten-exposed-to-buffer t]
+ ["Duplicate Exposed, indented"
+ allout-indented-exposed-to-buffer t]
+ "----"
+ ["Set Header Lead" allout-reset-header-lead t]
+ ["Set New Exposure" allout-expose-topic t])))
+;;;_ : Allout Modal-Variables Utilities
+;;;_ = allout-mode-prior-settings
+(defvar allout-mode-prior-settings nil
+ "Internal `allout-mode' use; settings to be resumed on mode deactivation.
+
+See `allout-add-resumptions' and `allout-do-resumptions'.")
+(make-variable-buffer-local 'allout-mode-prior-settings)
+;;;_ > allout-add-resumptions (&rest pairs)
+(defun allout-add-resumptions (&rest pairs)
+ "Set name/value PAIRS.
+
+Old settings are preserved for later resumption using `allout-do-resumptions'.
+
+The new values are set as a buffer local. On resumption, the prior buffer
+scope of the variable is restored along with its value. If it was a void
+buffer-local value, then it is left as nil on resumption.
+
+The pairs are lists whose car is the name of the variable and car of the
+cdr is the new value: '(some-var some-value)'. The pairs can actually be
+triples, where the third element qualifies the disposition of the setting,
+as described further below.
+
+If the optional third element is the symbol 'extend, then the new value
+created by `cons'ing the second element of the pair onto the front of the
+existing value.
+
+If the optional third element is the symbol 'append, then the new value is
+extended from the existing one by `append'ing a list containing the second
+element of the pair onto the end of the existing value.
+
+Extension, and resumptions in general, should not be used for hook
+functions - use the 'local mode of `add-hook' for that, instead.
+
+The settings are stored on `allout-mode-prior-settings'."
+ (while pairs
+ (let* ((pair (pop pairs))
+ (name (car pair))
+ (value (cadr pair))
+ (qualifier (if (> (length pair) 2)
+ (caddr pair)))
+ prior-value)
+ (if (not (symbolp name))
+ (error "Pair's name, %S, must be a symbol, not %s"
+ name (type-of name)))
+ (setq prior-value (condition-case nil
+ (symbol-value name)
+ (void-variable nil)))
+ (when (not (assoc name allout-mode-prior-settings))
+ ;; Not already added as a resumption, create the prior setting entry.
+ (if (local-variable-p name)
+ ;; is already local variable - preserve the prior value:
+ (push (list name prior-value) allout-mode-prior-settings)
+ ;; wasn't local variable, indicate so for resumption by killing
+ ;; local value, and make it local:
+ (push (list name) allout-mode-prior-settings)
+ (make-local-variable name)))
+ (if qualifier
+ (cond ((eq qualifier 'extend)
+ (if (not (listp prior-value))
+ (error "extension of non-list prior value attempted")
+ (set name (cons value prior-value))))
+ ((eq qualifier 'append)
+ (if (not (listp prior-value))
+ (error "appending of non-list prior value attempted")
+ (set name (append prior-value (list value)))))
+ (t (error "unrecognized setting qualifier `%s' encountered"
+ qualifier)))
+ (set name value)))))
+;;;_ > allout-do-resumptions ()
+(defun allout-do-resumptions ()
+ "Resume all name/value settings registered by `allout-add-resumptions'.
+
+This is used when concluding allout-mode, to resume selected variables to
+their settings before allout-mode was started."
+
+ (while allout-mode-prior-settings
+ (let* ((pair (pop allout-mode-prior-settings))
+ (name (car pair))
+ (value-cell (cdr pair)))
+ (if (not value-cell)
+ ;; Prior value was global:
+ (kill-local-variable name)
+ ;; Prior value was explicit:
+ (set name (car value-cell))))))
+;;;_ : Mode-specific incidentals
+;;;_ > allout-unprotected (expr)
+(defmacro allout-unprotected (expr)
+ "Enable internal outline operations to alter invisible text."
+ `(let ((inhibit-read-only (if (not buffer-read-only) t))
+ (inhibit-field-text-motion t))
+ ,expr))
+;;;_ = allout-mode-hook
+(defvar allout-mode-hook nil
+ "*Hook that's run when allout mode starts.")
+;;;_ = allout-mode-deactivate-hook
+(defvar allout-mode-deactivate-hook nil
+ "*Hook that's run when allout mode ends.")
+;;;_ = allout-exposure-category
+(defvar allout-exposure-category nil
+ "Symbol for use as allout invisible-text overlay category.")
+;;;_ x allout-view-change-hook
+(defvar allout-view-change-hook nil
+ "*\(Deprecated\) A hook run after allout outline exposure changes.
+
+Switch to using `allout-exposure-change-hook' instead. Both hooks are
+currently respected, but the other conveys the details of the exposure
+change via explicit parameters, and this one will eventually be disabled in
+a subsequent allout version.")
+;;;_ = allout-exposure-change-hook
+(defvar allout-exposure-change-hook nil
+ "*Hook that's run after allout outline subtree exposure changes.
+
+It is run at the conclusion of `allout-flag-region'.
+
+Functions on the hook must take three arguments:
+
+ - from - integer indicating the point at the start of the change.
+ - to - integer indicating the point of the end of the change.
+ - flag - change mode: nil for exposure, otherwise concealment.
+
+This hook might be invoked multiple times by a single command.
+
+This hook is replacing `allout-view-change-hook', which is being deprecated
+and eventually will not be invoked.")
+;;;_ = allout-structure-added-hook
+(defvar allout-structure-added-hook nil
+ "*Hook that's run after addition of items to the outline.
+
+Functions on the hook should take two arguments:
+
+ - new-start - integer indicating the point at the start of the first new item.
+ - new-end - integer indicating the point of the end of the last new item.
+
+Some edits that introduce new items may missed by this hook -
+specifically edits that native allout routines do not control.
+
+This hook might be invoked multiple times by a single command.")
+;;;_ = allout-structure-deleted-hook
+(defvar allout-structure-deleted-hook nil
+ "*Hook that's run after disciplined deletion of subtrees from the outline.
+
+Functions on the hook must take two arguments:
+
+ - depth - integer indicating the depth of the subtree that was deleted.
+ - removed-from - integer indicating the point where the subtree was removed.
+
+Some edits that remove or invalidate items may missed by this hook -
+specifically edits that native allout routines do not control.
+
+This hook might be invoked multiple times by a single command.")
+;;;_ = allout-structure-shifted-hook
+(defvar allout-structure-shifted-hook nil
+ "*Hook that's run after shifting of items in the outline.
+
+Functions on the hook should take two arguments:
+
+ - depth-change - integer indicating depth increase, negative for decrease
+ - start - integer indicating the start point of the shifted parent item.
+
+Some edits that shift items can be missed by this hook - specifically edits
+that native allout routines do not control.
+
+This hook might be invoked multiple times by a single command.")
+;;;_ = allout-outside-normal-auto-fill-function
+(defvar allout-outside-normal-auto-fill-function nil
+ "Value of normal-auto-fill-function outside of allout mode.
+
+Used by allout-auto-fill to do the mandated normal-auto-fill-function
+wrapped within allout's automatic fill-prefix setting.")
+(make-variable-buffer-local 'allout-outside-normal-auto-fill-function)
;;;_ = file-var-bug hack
-(defvar outline-v18/9-file-var-hack nil
+(defvar allout-v18/19-file-var-hack nil
"Horrible hack used to prevent invalid multiple triggering of outline
-mode from prop-line file-var activation. Used by outline-mode function
+mode from prop-line file-var activation. Used by `allout-mode' function
to track repeats.")
-;;;_ > outline-write-file-hook ()
-(defun outline-write-file-hook ()
- "In outline mode, run as a local-write-file-hooks activity.
-
-Currently just sets 'outline-during-write-cue', so outline-change-
-protection knows to keep inactive during file write."
- (setq outline-during-write-cue t)
- nil)
+;;;_ = allout-passphrase-verifier-string
+(defvar allout-passphrase-verifier-string nil
+ "Setting used to test solicited encryption passphrases against the one
+already associated with a file.
+
+It consists of an encrypted random string useful only to verify that a
+passphrase entered by the user is effective for decryption. The passphrase
+itself is \*not* recorded in the file anywhere, and the encrypted contents
+are random binary characters to avoid exposing greater susceptibility to
+search attacks.
+
+The verifier string is retained as an Emacs file variable, as well as in
+the Emacs buffer state, if file variable adjustments are enabled. See
+`allout-enable-file-variable-adjustment' for details about that.")
+(make-variable-buffer-local 'allout-passphrase-verifier-string)
+;;;###autoload
+(put 'allout-passphrase-verifier-string 'safe-local-variable 'stringp)
+;;;_ = allout-passphrase-hint-string
+(defvar allout-passphrase-hint-string ""
+ "Variable used to retain reminder string for file's encryption passphrase.
+
+See the description of `allout-passphrase-hint-handling' for details about how
+the reminder is deployed.
+
+The hint is retained as an Emacs file variable, as well as in the Emacs buffer
+state, if file variable adjustments are enabled. See
+`allout-enable-file-variable-adjustment' for details about that.")
+(make-variable-buffer-local 'allout-passphrase-hint-string)
+(setq-default allout-passphrase-hint-string "")
+;;;###autoload
+(put 'allout-passphrase-hint-string 'safe-local-variable 'stringp)
+;;;_ = allout-after-save-decrypt
+(defvar allout-after-save-decrypt nil
+ "Internal variable, is nil or has the value of two points:
+
+ - the location of a topic to be decrypted after saving is done
+ - where to situate the cursor after the decryption is performed
+
+This is used to decrypt the topic that was currently being edited, if it
+was encrypted automatically as part of a file write or autosave.")
+(make-variable-buffer-local 'allout-after-save-decrypt)
+;;;_ = allout-encryption-plaintext-sanitization-regexps
+(defvar allout-encryption-plaintext-sanitization-regexps nil
+ "List of regexps whose matches are removed from plaintext before encryption.
+
+This is for the sake of removing artifacts, like escapes, that are added on
+and not actually part of the original plaintext. The removal is done just
+prior to encryption.
+
+Entries must be symbols that are bound to the desired values.
+
+Each value can be a regexp or a list with a regexp followed by a
+substitution string. If it's just a regexp, all its matches are removed
+before the text is encrypted. If it's a regexp and a substitution, the
+substition is used against the regexp matches, a la `replace-match'.")
+(make-variable-buffer-local 'allout-encryption-text-removal-regexps)
+;;;_ = allout-encryption-ciphertext-rejection-regexps
+(defvar allout-encryption-ciphertext-rejection-regexps nil
+ "Variable for regexps matching plaintext to remove before encryption.
+
+This is for the sake of redoing encryption in cases where the ciphertext
+incidentally contains strings that would disrupt mode operation -
+for example, a line that happens to look like an allout-mode topic prefix.
+
+Entries must be symbols that are bound to the desired regexp values.
+
+The encryption will be retried up to
+`allout-encryption-ciphertext-rejection-limit' times, after which an error
+is raised.")
+
+(make-variable-buffer-local 'allout-encryption-ciphertext-rejection-regexps)
+;;;_ = allout-encryption-ciphertext-rejection-ceiling
+(defvar allout-encryption-ciphertext-rejection-ceiling 5
+ "Limit on number of times encryption ciphertext is rejected.
+
+See `allout-encryption-ciphertext-rejection-regexps' for rejection reasons.")
+(make-variable-buffer-local 'allout-encryption-ciphertext-rejection-ceiling)
+;;;_ > allout-mode-p ()
+;; Must define this macro above any uses, or byte compilation will lack
+;; proper def, if file isn't loaded - eg, during emacs build!
+(defmacro allout-mode-p ()
+ "Return t if `allout-mode' is active in current buffer."
+ 'allout-mode)
+;;;_ > allout-write-file-hook-handler ()
+(defun allout-write-file-hook-handler ()
+ "Implement `allout-encrypt-unencrypted-on-saves' policy for file writes."
+
+ (if (or (not (allout-mode-p))
+ (not (boundp 'allout-encrypt-unencrypted-on-saves))
+ (not allout-encrypt-unencrypted-on-saves))
+ nil
+ (let ((except-mark (and (equal allout-encrypt-unencrypted-on-saves
+ 'except-current)
+ (point-marker))))
+ (if (save-excursion (goto-char (point-min))
+ (allout-next-topic-pending-encryption except-mark))
+ (progn
+ (message "auto-encrypting pending topics")
+ (sit-for 0)
+ (condition-case failure
+ (setq allout-after-save-decrypt
+ (allout-encrypt-decrypted except-mark))
+ (error (progn
+ (message
+ "allout-write-file-hook-handler suppressing error %s"
+ failure)
+ (sit-for 2))))))
+ ))
+ nil)
+;;;_ > allout-auto-save-hook-handler ()
+(defun allout-auto-save-hook-handler ()
+ "Implement `allout-encrypt-unencrypted-on-saves' policy for auto save."
+
+ (if (and (allout-mode-p) allout-encrypt-unencrypted-on-saves)
+ ;; Always implement 'except-current policy when enabled.
+ (let ((allout-encrypt-unencrypted-on-saves 'except-current))
+ (allout-write-file-hook-handler))))
+;;;_ > allout-after-saves-handler ()
+(defun allout-after-saves-handler ()
+ "Decrypt topic encrypted for save, if it's currently being edited.
+
+Ie, if it was pending encryption and contained the point in its body before
+the save.
+
+We use values stored in `allout-after-save-decrypt' to locate the topic
+and the place for the cursor after the decryption is done."
+ (if (not (and (allout-mode-p)
+ (boundp 'allout-after-save-decrypt)
+ allout-after-save-decrypt))
+ t
+ (goto-char (car allout-after-save-decrypt))
+ (let ((was-modified (buffer-modified-p)))
+ (allout-toggle-subtree-encryption)
+ (if (not was-modified)
+ (set-buffer-modified-p nil)))
+ (goto-char (cadr allout-after-save-decrypt))
+ (setq allout-after-save-decrypt nil))
+ )
+;;;_ = allout-during-yank-processing nil
+;; XXX allout yanks adjust the level of the topic being pasted to that of
+;; their target location. aberrance must be inhibited to allow that
+;; reconciliation. (this means that actually aberrant topics won't be
+;; treated specially while being pasted.)
+(defvar allout-during-yank-processing nil
+ "Internal state, inhibits aberrance doublecheck while adjusting yanks.")
;;;_ #2 Mode activation
-;;;_ = outline-mode
-(defvar outline-mode () "Allout outline mode minor-mode flag.")
-(make-variable-buffer-local 'outline-mode)
-;;;_ > outline-mode-p ()
-(defmacro outline-mode-p ()
- "Return t if outline-mode is active in current buffer."
- 'outline-mode)
-;;;_ = outline-explicitly-deactivated
-(defvar outline-explicitly-deactivated nil
- "Outline-mode was last deliberately deactived.
-So outline-post-command-business should not reactivate it...")
-(make-variable-buffer-local 'outline-explicitly-deactivated)
-;;;_ > outline-init (&optional mode)
-(defun outline-init (&optional mode)
- "Prime outline-mode to enable/disable auto-activation, wrt `outline-layout'.
+;;;_ = allout-explicitly-deactivated
+(defvar allout-explicitly-deactivated nil
+ "If t, `allout-mode's last deactivation was deliberate.
+So `allout-post-command-business' should not reactivate it...")
+(make-variable-buffer-local 'allout-explicitly-deactivated)
+;;;_ > allout-init (&optional mode)
+(defun allout-init (&optional mode)
+ "Prime `allout-mode' to enable/disable auto-activation, wrt `allout-layout'.
MODE is one of the following symbols:
- - nil \(or no argument) deactivate auto-activation/layou;
- - 'activate', enable auto-activation only;
- - 'ask', enable auto-activation, and enable auto-layout but with
- confirmation for layout operation solicitated from user each time;
- - 'report', just report and return the current auto-activation state;
+ - nil \(or no argument) deactivate auto-activation/layout;
+ - `activate', enable auto-activation only;
+ - `ask', enable auto-activation, and enable auto-layout but with
+ confirmation for layout operation solicited from user each time;
+ - `report', just report and return the current auto-activation state;
- anything else \(eg, t) for auto-activation and auto-layout, without
any confirmation check.
-Use this function to setup your emacs session for automatic activation
+Use this function to setup your Emacs session for automatic activation
of allout outline mode, contingent to the buffer-specific setting of
-the `outline-layout' variable. (See `outline-layout' and
-`outline-expose-topic' docstrings for more details on auto layout).
+the `allout-layout' variable. (See `allout-layout' and
+`allout-expose-topic' docstrings for more details on auto layout).
-`outline-init' works by setting up (or removing) the outline-mode
-find-file-hook, and giving `outline-auto-activation' a suitable
+`allout-init' works by setting up (or removing) the `allout-mode'
+find-file-hook, and giving `allout-auto-activation' a suitable
setting.
-To prime your emacs session for full auto-outline operation, include
-the following two lines in your emacs init file:
+To prime your Emacs session for full auto-outline operation, include
+the following two lines in your Emacs init file:
\(require 'allout)
-\(outline-init t)"
+\(allout-init t)"
(interactive)
(if (interactive-p)
(setq mode (intern-soft mode)))))
(let
;; convenience aliases, for consistent ref to respective vars:
- ((hook 'outline-find-file-hook)
- (curr-mode 'outline-auto-activation))
-
+ ((hook 'allout-find-file-hook)
+ (find-file-hook-var-name (if (boundp 'find-file-hook)
+ 'find-file-hook
+ 'find-file-hooks))
+ (curr-mode 'allout-auto-activation))
+
(cond ((not mode)
- (setq find-file-hooks (delq hook find-file-hooks))
+ (set find-file-hook-var-name
+ (delq hook (symbol-value find-file-hook-var-name)))
(if (interactive-p)
(message "Allout outline mode auto-activation inhibited.")))
((eq mode 'report)
- (if (not (memq hook find-file-hooks))
- (outline-init nil)
+ (if (not (memq hook (symbol-value find-file-hook-var-name)))
+ (allout-init nil)
;; Just punt and use the reports from each of the modes:
- (outline-init (symbol-value curr-mode))))
- (t (add-hook 'find-file-hooks hook)
- (set curr-mode ; 'set', not 'setq'!
+ (allout-init (symbol-value curr-mode))))
+ (t (add-hook find-file-hook-var-name hook)
+ (set curr-mode ; `set', not `setq'!
(cond ((eq mode 'activate)
(message
"Outline mode auto-activation enabled.")
'activate)
((eq mode 'report)
;; Return the current mode setting:
- (outline-init mode))
+ (allout-init mode))
((eq mode 'ask)
(message
(concat "Outline mode auto-activation and "
((message
"Outline mode auto-activation and -layout enabled.")
'full)))))))
-
-;;;_ > outline-mode (&optional toggle)
+;;;_ > allout-setup-menubar ()
+(defun allout-setup-menubar ()
+ "Populate the current buffer's menubar with `allout-mode' stuff."
+ (let ((menus (list allout-mode-exposure-menu
+ allout-mode-editing-menu
+ allout-mode-navigation-menu
+ allout-mode-misc-menu))
+ cur)
+ (while menus
+ (setq cur (car menus)
+ menus (cdr menus))
+ (easy-menu-add cur))))
+;;;_ > allout-overlay-preparations
+(defun allout-overlay-preparations ()
+ "Set the properties of the allout invisible-text overlay and others."
+ (setplist 'allout-exposure-category nil)
+ (put 'allout-exposure-category 'invisible 'allout)
+ (put 'allout-exposure-category 'evaporate t)
+ ;; XXX We use isearch-open-invisible *and* isearch-mode-end-hook. The
+ ;; latter would be sufficient, but it seems that a separate behavior -
+ ;; the _transient_ opening of invisible text during isearch - is keyed to
+ ;; presence of the isearch-open-invisible property - even though this
+ ;; property controls the isearch _arrival_ behavior. This is the case at
+ ;; least in emacs 21, 22.0, and xemacs 21.4.
+ (put 'allout-exposure-category 'isearch-open-invisible
+ 'allout-isearch-end-handler)
+ (if (featurep 'xemacs)
+ (put 'allout-exposure-category 'start-open t)
+ (put 'allout-exposure-category 'insert-in-front-hooks
+ '(allout-overlay-insert-in-front-handler)))
+ (put 'allout-exposure-category 'modification-hooks
+ '(allout-overlay-interior-modification-handler)))
+;;;_ > allout-mode (&optional toggle)
;;;_ : Defun:
-(defun outline-mode (&optional toggle)
+;;;###autoload
+(defun allout-mode (&optional toggle)
;;;_ . Doc string:
"Toggle minor mode for controlling exposure and editing of text outlines.
+\\<allout-mode-map>
-Optional arg forces mode reactivation iff arg is positive num or symbol.
+Optional arg forces mode to re-initialize iff arg is positive num or
+symbol. Allout outline mode always runs as a minor mode.
-Allout outline mode provides extensive outline formatting and
-manipulation capabilities. It is specifically aimed at supporting
-outline structuring and manipulation of syntax-sensitive text, eg
-programming languages. \(For an example, see the allout code itself,
-which is organized in outline structure.\)
+Allout outline mode provides extensive outline oriented formatting and
+manipulation. It enables structural editing of outlines, as well as
+navigation and exposure. It also is specifically aimed at
+accommodating syntax-sensitive text like programming languages. \(For
+an example, see the allout code itself, which is organized as an allout
+outline.)
-It also includes such things as topic-oriented repositioning, cut, and
-paste; integral outline exposure-layout; incremental search with
-dynamic exposure/conceament of concealed text; automatic topic-number
-maintenance; and many other features.
+In addition to outline navigation and exposure, allout includes:
-See the docstring of the variable `outline-init' for instructions on
-priming your emacs session for automatic activation of outline-mode,
-according to file-var settings of the `outline-layout' variable.
+ - topic-oriented repositioning, promotion/demotion, cut, and paste
+ - integral outline exposure-layout
+ - incremental search with dynamic exposure and reconcealment of hidden text
+ - automatic topic-number maintenance
+ - easy topic encryption and decryption
+ - \"Hot-spot\" operation, for single-keystroke maneuvering and
+ exposure control. \(See the allout-mode docstring.)
+
+and many other features.
Below is a description of the bindings, and then explanation of
-special outline-mode features and terminology.
+special `allout-mode' features and terminology. See also the outline
+menubar additions for quick reference to many of the features, and see
+the docstring of the function `allout-init' for instructions on
+priming your emacs session for automatic activation of `allout-mode'.
+
-The bindings themselves are established according to the values of
-variables `outline-keybindings-list' and `outline-command-prefix',
-each time the mode is invoked. Prior bindings are resurrected when
-the mode is revoked.
+The bindings are dictated by the `allout-keybindings-list' and
+`allout-command-prefix' variables.
Navigation: Exposure Control:
---------- ----------------
-C-c C-n outline-next-visible-heading | C-c C-h outline-hide-current-subtree
-C-c C-p outline-previous-visible-heading | C-c C-i outline-show-children
-C-c C-u outline-up-current-level | C-c C-s outline-show-current-subtree
-C-c C-f outline-forward-current-level | C-c C-o outline-show-current-entry
-C-c C-b outline-backward-current-level | ^U C-c C-s outline-show-all
-C-c C-e outline-end-of-current-entry | outline-hide-current-leaves
-C-c C-a outline-beginning-of-current-entry, alternately, goes to hot-spot
+\\[allout-next-visible-heading] allout-next-visible-heading | \\[allout-hide-current-subtree] allout-hide-current-subtree
+\\[allout-previous-visible-heading] allout-previous-visible-heading | \\[allout-show-children] allout-show-children
+\\[allout-up-current-level] allout-up-current-level | \\[allout-show-current-subtree] allout-show-current-subtree
+\\[allout-forward-current-level] allout-forward-current-level | \\[allout-show-current-entry] allout-show-current-entry
+\\[allout-backward-current-level] allout-backward-current-level | \\[allout-show-all] allout-show-all
+\\[allout-end-of-entry] allout-end-of-entry
+\\[allout-beginning-of-current-entry] allout-beginning-of-current-entry, alternately, goes to hot-spot
Topic Header Production:
-----------------------
-C-c<SP> outline-open-sibtopic Create a new sibling after current topic.
-C-c . outline-open-subtopic ... an offspring of current topic.
-C-c , outline-open-supertopic ... a sibling of the current topic's parent.
+\\[allout-open-sibtopic] allout-open-sibtopic Create a new sibling after current topic.
+\\[allout-open-subtopic] allout-open-subtopic ... an offspring of current topic.
+\\[allout-open-supertopic] allout-open-supertopic ... a sibling of the current topic's parent.
Topic Level and Prefix Adjustment:
---------------------------------
-C-c > outline-shift-in Shift current topic and all offspring deeper.
-C-c < outline-shift-out ... less deep.
-C-c<CR> outline-rebullet-topic Reconcile bullets of topic and its' offspring
+\\[allout-shift-in] allout-shift-in Shift current topic and all offspring deeper.
+\\[allout-shift-out] allout-shift-out ... less deep.
+\\[allout-rebullet-current-heading] allout-rebullet-current-heading Prompt for alternate bullet for
+ current topic.
+\\[allout-rebullet-topic] allout-rebullet-topic Reconcile bullets of topic and its offspring
- distinctive bullets are not changed, others
alternated according to nesting depth.
-C-c b outline-rebullet-current-heading Prompt for alternate bullet for
- current topic.
-C-c # outline-number-siblings Number bullets of topic and siblings - the
+\\[allout-number-siblings] allout-number-siblings Number bullets of topic and siblings - the
offspring are not affected. With repeat
count, revoke numbering.
Topic-oriented Killing and Yanking:
----------------------------------
-C-c C-k outline-kill-topic Kill current topic, including offspring.
-C-k outline-kill-line Like kill-line, but reconciles numbering, etc.
-C-y outline-yank Yank, adjusting depth of yanked topic to
+\\[allout-kill-topic] allout-kill-topic Kill current topic, including offspring.
+\\[allout-copy-topic-as-kill] allout-copy-topic-as-kill Copy current topic, including offspring.
+\\[allout-kill-line] allout-kill-line kill-line, attending to outline structure.
+\\[allout-copy-line-as-kill] allout-copy-line-as-kill Copy line but don't delete it.
+\\[allout-yank] allout-yank Yank, adjusting depth of yanked topic to
depth of heading if yanking into bare topic
heading (ie, prefix sans text).
-M-y outline-yank-pop Is to outline-yank as yank-pop is to yank
+\\[allout-yank-pop] allout-yank-pop Is to allout-yank as yank-pop is to yank
+
+ Topic-oriented Encryption:
+ -------------------------
+\\[allout-toggle-current-subtree-encryption] allout-toggle-current-subtree-encryption Encrypt/Decrypt topic content
Misc commands:
-------------
-C-c @ outline-resolve-xref pop-to-buffer named by xref (cf
- outline-file-xref-bullet)
-C-c c outline-copy-exposed Copy current topic outline sans concealed
- text, to buffer with name derived from
- current buffer - \"XXX exposed\"
M-x outlineify-sticky Activate outline mode for current buffer,
and establish a default file-var setting
- for `outline-layout'.
-ESC ESC (outline-init t) Setup emacs session for outline mode
+ for `allout-layout'.
+\\[allout-mark-topic] allout-mark-topic
+\\[allout-copy-exposed-to-buffer] allout-copy-exposed-to-buffer
+ Duplicate outline, sans concealed text, to
+ buffer with name derived from derived from that
+ of current buffer - \"*BUFFERNAME exposed*\".
+\\[allout-flatten-exposed-to-buffer] allout-flatten-exposed-to-buffer
+ Like above 'copy-exposed', but convert topic
+ prefixes to section.subsection... numeric
+ format.
+\\[eval-expression] (allout-init t) Setup Emacs session for outline mode
auto-activation.
+ Topic Encryption
+
+Outline mode supports gpg encryption of topics, with support for
+symmetric and key-pair modes, passphrase timeout, passphrase
+consistency checking, user-provided hinting for symmetric key
+mode, and auto-encryption of topics pending encryption on save.
+\(Topics pending encryption are, by default, automatically
+encrypted during file saves; if you're editing the contents of
+such a topic, it is automatically decrypted for continued
+editing.) The aim is reliable topic privacy while preventing
+accidents like neglected encryption before saves, forgetting
+which passphrase was used, and other practical pitfalls.
+
+See `allout-toggle-current-subtree-encryption' function docstring and
+`allout-encrypt-unencrypted-on-saves' customization variable for details.
+
HOT-SPOT Operation
Hot-spot operation provides a means for easy, single-keystroke outline
navigation and exposure control.
-\\<outline-mode-map>
When the text cursor is positioned directly on the bullet character of
a topic, regular characters (a to z) invoke the commands of the
-corresponding outline-mode keymap control chars. For example, \"f\"
-would invoke the command typically bound to \"C-c C-f\"
-\(\\[outline-forward-current-level] `outline-forward-current-level').
+corresponding allout-mode keymap control chars. For example, \"f\"
+would invoke the command typically bound to \"C-c<space>C-f\"
+\(\\[allout-forward-current-level] `allout-forward-current-level').
-Thus, by positioning the cursor on a topic bullet, you can execute
-the outline navigation and manipulation commands with a single
-keystroke. Non-literal chars never get this special translation, so
-you can use them to get away from the hot-spot, and back to normal
-operation.
+Thus, by positioning the cursor on a topic bullet, you can
+execute the outline navigation and manipulation commands with a
+single keystroke. Regular navigation keys (eg, \\[forward-char], \\[next-line]) never get
+this special translation, so you can use them to get out of the
+hot-spot and back to normal operation.
-Note that the command `outline-beginning-of-current-entry' \(\\[outline-beginning-of-current-entry]\)
+Note that the command `allout-beginning-of-current-entry' \(\\[allout-beginning-of-current-entry]\)
will move to the hot-spot when the cursor is already located at the
-beginning of the current entry, so you can simply hit \\[outline-beginning-of-current-entry]
+beginning of the current entry, so you usually can hit \\[allout-beginning-of-current-entry]
twice in a row to get to the hot-spot.
Terminology
Topic hierarchy constituents - TOPICS and SUBTOPICS:
-TOPIC: A basic, coherent component of an emacs outline. It can
- contain other topics, and it can be subsumed by other topics,
+TOPIC: A basic, coherent component of an Emacs outline. It can
+ contain and be contained by other topics.
CURRENT topic:
The visible topic most immediately containing the cursor.
DEPTH: The degree of nesting of a topic; it increases with
The immediate offspring of a topic.
SIBLINGS:
Topics having the same parent and depth.
-
+
Topic text constituents:
HEADER: The first line of a topic, include the topic PREFIX and header
- text.
-PREFIX: The leading text of a topic which which distinguishes it from
- normal text. It has a strict form, which consists of a
- prefix-lead string, padding, and a bullet. The bullet may be
- followed by a number, indicating the ordinal number of the
- topic among its siblings, a space, and then the header text.
+ text.
+PREFIX: The leading text of a topic which distinguishes it from normal
+ text. It has a strict form, which consists of a prefix-lead
+ string, padding, and a bullet. The bullet may be followed by a
+ number, indicating the ordinal number of the topic among its
+ siblings, a space, and then the header text.
The relative length of the PREFIX determines the nesting depth
of the topic.
PREFIX-LEAD:
- The string at the beginning of a topic prefix, normally a '.'.
+ The string at the beginning of a topic prefix, normally a `.'.
It can be customized by changing the setting of
- `outline-header-prefix' and then reinitializing outline-mode.
+ `allout-header-prefix' and then reinitializing `allout-mode'.
By setting the prefix-lead to the comment-string of a
- programming language, you can embed outline-structuring in
+ programming language, you can embed outline structuring in
program code without interfering with the language processing
- of that code. See `outline-use-mode-specific-leader'
+ of that code. See `allout-use-mode-specific-leader'
docstring for more detail.
PREFIX-PADDING:
Spaces or asterisks which separate the prefix-lead and the
- bullet, according to the depth of the topic.
+ bullet, determining the depth of the topic.
BULLET: A character at the end of the topic prefix, it must be one of
- the characters listed on 'outline-plain-bullets-string' or
- 'outline-distinctive-bullets-string'. (See the documentation
+ the characters listed on `allout-plain-bullets-string' or
+ `allout-distinctive-bullets-string'. (See the documentation
for these variables for more details.) The default choice of
- bullet when generating varies in a cycle with the depth of the
- topic.
+ bullet when generating topics varies in a cycle with the depth of
+ the topic.
ENTRY: The text contained in a topic before any offspring.
BODY: Same as ENTRY.
EXPOSURE:
The state of a topic which determines the on-screen visibility
- of its' offspring and contained text.
+ of its offspring and contained text.
CONCEALED:
Topics and entry text whose display is inhibited. Contiguous
- units of concealed text is represented by '...' ellipses.
- (Ref the 'selective-display' var.)
+ units of concealed text is represented by `...' ellipses.
Concealed topics are effectively collapsed within an ancestor.
CLOSED: A topic whose immediate offspring and body-text is concealed.
-OPEN: A topic that is not closed, though its' offspring or body may be."
+OPEN: A topic that is not closed, though its offspring or body may be."
;;;_ . Code
(interactive "P")
(let* ((active (and (not (equal major-mode 'outline))
- (outline-mode-p)))
- ; Massage universal-arg 'toggle' val:
+ (allout-mode-p)))
+ ; Massage universal-arg `toggle' val:
(toggle (and toggle
(or (and (listp toggle)(car toggle))
toggle)))
- ; Activation specficially demanded?
- (explicit-activation (or
- ;;
- (and toggle
+ ; Activation specifically demanded?
+ (explicit-activation (and toggle
(or (symbolp toggle)
- (and (natnump toggle)
- (not (zerop toggle)))))))
- ;; outline-mode already called once during this complex command?
- (same-complex-command (eq outline-v18/9-file-var-hack
+ (and (wholenump toggle)
+ (not (zerop toggle))))))
+ ;; allout-mode already called once during this complex command?
+ (same-complex-command (eq allout-v18/19-file-var-hack
(car command-history)))
+ (write-file-hook-var-name (cond ((boundp 'write-file-functions)
+ 'write-file-functions)
+ ((boundp 'write-file-hooks)
+ 'write-file-hooks)
+ (t 'local-write-file-hooks)))
do-layout
)
; See comments below re v19.18,.19 bug.
- (setq outline-v18/9-file-var-hack (car command-history))
+ (setq allout-v18/19-file-var-hack (car command-history))
(cond
;; off on second invocation, so we detect it as best we can, and
;; skip everything.
((and same-complex-command ; Still in same complex command
- ; as last time outline-mode invoked.
+ ; as last time `allout-mode' invoked.
active ; Already activated.
(not explicit-activation) ; Prop-line file-vars don't have args.
(string-match "^19.1[89]" ; Bug only known to be in v19.18 and
emacs-version)); 19.19.
t)
-
+
;; Deactivation:
((and (not explicit-activation)
(or active toggle))
; requested, and either in
; active state or *de*activation
; specifically requested:
- (setq outline-explicitly-deactivated t)
- (if (string-match "^18\." emacs-version)
- ; Revoke those keys that remain
- ; as we set them:
- (let ((curr-loc (current-local-map)))
- (mapcar '(lambda (cell)
- (if (eq (lookup-key curr-loc (car cell))
- (car (cdr cell)))
- (define-key curr-loc (car cell)
- (assq (car cell) outline-prior-bindings))))
- outline-added-bindings)
- (outline-resumptions 'outline-added-bindings)
- (outline-resumptions 'outline-prior-bindings)))
-
- (if outline-old-style-prefixes
- (progn
- (outline-resumptions 'outline-primary-bullet)
- (outline-resumptions 'outline-old-style-prefixes)))
- (outline-resumptions 'selective-display)
- (if (and (boundp 'before-change-function) before-change-function)
- (outline-resumptions 'before-change-function))
- (setq pre-command-hook (delq 'outline-pre-command-business
- pre-command-hook))
- (setq local-write-file-hooks
- (delq 'outline-write-file-hook
- local-write-file-hooks))
- (outline-resumptions 'paragraph-start)
- (outline-resumptions 'paragraph-separate)
- (outline-resumptions (if (string-match "^18" emacs-version)
- 'auto-fill-hook
- 'auto-fill-function))
- (outline-resumptions 'outline-former-auto-filler)
- (setq outline-mode nil))
+ (setq allout-explicitly-deactivated t)
+
+ (allout-do-resumptions)
+
+ (remove-from-invisibility-spec '(allout . t))
+ (remove-hook 'pre-command-hook 'allout-pre-command-business t)
+ (remove-hook 'post-command-hook 'allout-post-command-business t)
+ (remove-hook 'before-change-functions 'allout-before-change-handler t)
+ (remove-hook 'isearch-mode-end-hook 'allout-isearch-end-handler t)
+ (remove-hook write-file-hook-var-name 'allout-write-file-hook-handler t)
+ (remove-hook 'auto-save-hook 'allout-auto-save-hook-handler t)
+
+ (remove-overlays (point-min) (point-max)
+ 'category 'allout-exposure-category)
+
+ (setq allout-mode nil)
+ (run-hooks 'allout-mode-deactivate-hook))
;; Activation:
((not active)
- (setq outline-explicitly-deactivated nil)
- (if outline-old-style-prefixes
- (progn ; Inhibit all the fancy formatting:
- (outline-resumptions 'outline-primary-bullet '("*"))
- (outline-resumptions 'outline-old-style-prefixes '(()))))
-
- (outline-infer-header-lead)
- (outline-infer-body-reindent)
-
- (set-outline-regexp)
-
- ; Produce map from current version
- ; of outline-keybindings-list:
- (if (boundp 'minor-mode-map-alist)
-
- (progn ; V19, and maybe lucid and
- ; epoch, minor-mode key bindings:
- (setq outline-mode-map
- (produce-outline-mode-map outline-keybindings-list))
- (fset 'outline-mode-map outline-mode-map)
- ; Include on minor-mode-map-alist,
- ; if not already there:
- (if (not (member '(outline-mode . outline-mode-map)
- minor-mode-map-alist))
- (setq minor-mode-map-alist
- (cons '(outline-mode . outline-mode-map)
- minor-mode-map-alist))))
-
- ; V18 minor-mode key bindings:
- ; Stash record of added bindings
- ; for later revocation:
- (outline-resumptions 'outline-added-bindings
- (list outline-keybindings-list))
- (outline-resumptions 'outline-prior-bindings
- (list (current-local-map)))
- ; and add them:
- (use-local-map (produce-outline-mode-map outline-keybindings-list
- (current-local-map)))
- )
-
- ; selective-display is the
- ; emacs conditional exposure
- ; mechanism:
- (outline-resumptions 'selective-display '(t))
- (if outline-inhibit-protection
- t
- (outline-resumptions 'before-change-function
- '(outline-before-change-protect)))
- ; Temporarily set by any outline
- ; functions that can be trusted to
- ; deal properly with concealed text.
- (add-hook 'local-write-file-hooks 'outline-write-file-hook)
- ; Custom auto-fill func, to support
- ; respect for topic headline,
- ; hanging-indents, etc:
- (let* ((fill-func-var (if (string-match "^18" emacs-version)
- 'auto-fill-hook
- 'auto-fill-function))
- (fill-func (symbol-value fill-func-var)))
- ;; Register prevailing fill func for use by outline-auto-fill:
- (outline-resumptions 'outline-former-auto-filler (list fill-func))
- ;; Register outline-auto-fill to be used if filling is active:
- (outline-resumptions fill-func-var '(outline-auto-fill)))
- ;; Paragraphs are broken by topic headlines.
- (make-local-variable 'paragraph-start)
- (outline-resumptions 'paragraph-start
- (list (concat paragraph-start "\\|^\\("
- outline-regexp "\\)")))
- (make-local-variable 'paragraph-separate)
- (outline-resumptions 'paragraph-separate
- (list (concat paragraph-separate "\\|^\\("
- outline-regexp "\\)")))
-
- (or (assq 'outline-mode minor-mode-alist)
+ (setq allout-explicitly-deactivated nil)
+ (if allout-old-style-prefixes
+ ;; Inhibit all the fancy formatting:
+ (allout-add-resumptions '(allout-primary-bullet "*")))
+
+ (allout-overlay-preparations) ; Doesn't hurt to redo this.
+
+ (allout-infer-header-lead-and-primary-bullet)
+ (allout-infer-body-reindent)
+
+ (set-allout-regexp)
+ (allout-add-resumptions
+ '(allout-encryption-ciphertext-rejection-regexps
+ allout-line-boundary-regexp
+ extend)
+ '(allout-encryption-ciphertext-rejection-regexps
+ allout-bob-regexp
+ extend))
+
+ ;; Produce map from current version of allout-keybindings-list:
+ (setq allout-mode-map
+ (produce-allout-mode-map allout-keybindings-list))
+ (substitute-key-definition 'beginning-of-line
+ 'allout-beginning-of-line
+ allout-mode-map global-map)
+ (substitute-key-definition 'move-beginning-of-line
+ 'allout-beginning-of-line
+ allout-mode-map global-map)
+ (substitute-key-definition 'end-of-line
+ 'allout-end-of-line
+ allout-mode-map global-map)
+ (substitute-key-definition 'move-end-of-line
+ 'allout-end-of-line
+ allout-mode-map global-map)
+ (produce-allout-mode-menubar-entries)
+ (fset 'allout-mode-map allout-mode-map)
+
+ ;; Include on minor-mode-map-alist, if not already there:
+ (if (not (member '(allout-mode . allout-mode-map)
+ minor-mode-map-alist))
+ (setq minor-mode-map-alist
+ (cons '(allout-mode . allout-mode-map)
+ minor-mode-map-alist)))
+
+ (add-to-invisibility-spec '(allout . t))
+ (allout-add-resumptions '(line-move-ignore-invisible t))
+ (add-hook 'pre-command-hook 'allout-pre-command-business nil t)
+ (add-hook 'post-command-hook 'allout-post-command-business nil t)
+ (add-hook 'before-change-functions 'allout-before-change-handler
+ nil t)
+ (add-hook 'isearch-mode-end-hook 'allout-isearch-end-handler nil t)
+ (add-hook write-file-hook-var-name 'allout-write-file-hook-handler
+ nil t)
+ (add-hook 'auto-save-hook 'allout-auto-save-hook-handler
+ nil t)
+
+ ;; Stash auto-fill settings and adjust so custom allout auto-fill
+ ;; func will be used if auto-fill is active or activated. (The
+ ;; custom func respects topic headline, maintains hanging-indents,
+ ;; etc.)
+ (if (and auto-fill-function (not allout-inhibit-auto-fill))
+ ;; allout-auto-fill will use the stashed values and so forth.
+ (allout-add-resumptions '(auto-fill-function allout-auto-fill)))
+ (allout-add-resumptions (list 'allout-former-auto-filler
+ auto-fill-function)
+ ;; Register allout-auto-fill to be used if
+ ;; filling is active:
+ (list 'allout-outside-normal-auto-fill-function
+ normal-auto-fill-function)
+ '(normal-auto-fill-function allout-auto-fill)
+ ;; Paragraphs are broken by topic headlines.
+ (list 'paragraph-start
+ (concat paragraph-start "\\|^\\("
+ allout-regexp "\\)"))
+ (list 'paragraph-separate
+ (concat paragraph-separate "\\|^\\("
+ allout-regexp "\\)")))
+ (or (assq 'allout-mode minor-mode-alist)
(setq minor-mode-alist
- (cons '(outline-mode " Outl") minor-mode-alist)))
+ (cons '(allout-mode " Allout") minor-mode-alist)))
- (if outline-layout
- (setq do-layout t))
+ (allout-setup-menubar)
- (if outline-enwrap-isearch-mode
- (outline-enwrap-isearch))
+ (if allout-layout
+ (setq do-layout t))
- (run-hooks 'outline-mode-hook)
- (setq outline-mode t))
+ (setq allout-mode t)
+ (run-hooks 'allout-mode-hook))
;; Reactivation:
((setq do-layout t)
- (outline-infer-body-reindent))
- ) ; cond
-
- (if (and do-layout
- outline-auto-activation
- (listp outline-layout)
- (and (not (eq outline-auto-activation 'activate))
- (if (eq outline-auto-activation 'ask)
- (if (y-or-n-p (format "Expose %s with layout '%s'? "
- (buffer-name)
- outline-layout))
- t
- (message "Skipped %s layout." (buffer-name))
- nil)
- t)))
- (save-excursion
- (message "Adjusting '%s' exposure..." (buffer-name))
- (goto-char 0)
- (outline-this-or-next-heading)
- (condition-case err
- (progn
- (apply 'outline-expose-topic (list outline-layout))
- (message "Adjusting '%s' exposure... done." (buffer-name)))
- ;; Problem applying exposure - notify user, but don't
- ;; interrupt, eg, file visit:
- (error (message "%s" (car (cdr err)))
- (sit-for 1)))))
- outline-mode
+ (allout-infer-body-reindent))
+ ) ;; end of activation-mode cases.
+
+ ;; Do auto layout if warranted:
+ (let ((use-layout (if (listp allout-layout)
+ allout-layout
+ allout-default-layout)))
+ (if (and do-layout
+ allout-auto-activation
+ use-layout
+ (and (not (eq allout-auto-activation 'activate))
+ (if (eq allout-auto-activation 'ask)
+ (if (y-or-n-p (format "Expose %s with layout '%s'? "
+ (buffer-name)
+ use-layout))
+ t
+ (message "Skipped %s layout." (buffer-name))
+ nil)
+ t)))
+ (save-excursion
+ (message "Adjusting '%s' exposure..." (buffer-name))
+ (goto-char 0)
+ (allout-this-or-next-heading)
+ (condition-case err
+ (progn
+ (apply 'allout-expose-topic (list use-layout))
+ (message "Adjusting '%s' exposure... done." (buffer-name)))
+ ;; Problem applying exposure - notify user, but don't
+ ;; interrupt, eg, file visit:
+ (error (message "%s" (car (cdr err)))
+ (sit-for 1))))))
+ allout-mode
) ; let*
) ; defun
+;;;_ > allout-minor-mode
+(defalias 'allout-minor-mode 'allout-mode)
-;;;_ #3 Internal Position State-Tracking - "outline-recent-*" funcs
+;;;_ - Position Assessment
+;;;_ > allout-hidden-p (&optional pos)
+(defsubst allout-hidden-p (&optional pos)
+ "Non-nil if the character after point is invisible."
+ (eq (get-char-property (or pos (point)) 'invisible) 'allout))
+
+;;;_ > allout-overlay-insert-in-front-handler (ol after beg end
+;;; &optional prelen)
+(defun allout-overlay-insert-in-front-handler (ol after beg end
+ &optional prelen)
+ "Shift the overlay so stuff inserted in front of it are excluded."
+ (if after
+ (move-overlay ol (1+ beg) (overlay-end ol))))
+;;;_ > allout-overlay-interior-modification-handler (ol after beg end
+;;; &optional prelen)
+(defun allout-overlay-interior-modification-handler (ol after beg end
+ &optional prelen)
+ "Get confirmation before making arbitrary changes to invisible text.
+
+We expose the invisible text and ask for confirmation. Refusal or
+keyboard-quit abandons the changes, with keyboard-quit additionally
+reclosing the opened text.
+
+No confirmation is necessary when inhibit-read-only is set - eg, allout
+internal functions use this feature cohesively bunch changes."
+
+ (when (and (not inhibit-read-only) (not after))
+ (let ((start (point))
+ (ol-start (overlay-start ol))
+ (ol-end (overlay-end ol))
+ first)
+ (goto-char beg)
+ (while (< (point) end)
+ (when (allout-hidden-p)
+ (allout-show-to-offshoot)
+ (if (allout-hidden-p)
+ (save-excursion (forward-char 1)
+ (allout-show-to-offshoot)))
+ (when (not first)
+ (setq first (point))))
+ (goto-char (if (featurep 'xemacs)
+ (next-property-change (1+ (point)) nil end)
+ (next-char-property-change (1+ (point)) end))))
+ (when first
+ (goto-char first)
+ (condition-case nil
+ (if (not
+ (yes-or-no-p
+ (substitute-command-keys
+ (concat "Modify concealed text? (\"no\" just aborts,"
+ " \\[keyboard-quit] also reconceals) "))))
+ (progn (goto-char start)
+ (error "Concealed-text change refused.")))
+ (quit (allout-flag-region ol-start ol-end nil)
+ (allout-flag-region ol-start ol-end t)
+ (error "Concealed-text change abandoned, text reconcealed."))))
+ (goto-char start))))
+;;;_ > allout-before-change-handler (beg end)
+(defun allout-before-change-handler (beg end)
+ "Protect against changes to invisible text.
+
+See allout-overlay-interior-modification-handler for details."
+
+ (if (and (allout-mode-p) undo-in-progress (allout-hidden-p))
+ (allout-show-to-offshoot))
+
+ ;; allout-overlay-interior-modification-handler on an overlay handles
+ ;; this in other emacs, via `allout-exposure-category's 'modification-hooks.
+ (when (and (featurep 'xemacs) (allout-mode-p))
+ ;; process all of the pending overlays:
+ (save-excursion
+ (got-char beg)
+ (let ((overlay (allout-get-invisibility-overlay)))
+ (allout-overlay-interior-modification-handler
+ overlay nil beg end nil)))))
+;;;_ > allout-isearch-end-handler (&optional overlay)
+(defun allout-isearch-end-handler (&optional overlay)
+ "Reconcile allout outline exposure on arriving in hidden text after isearch.
+
+Optional OVERLAY parameter is for when this function is used by
+`isearch-open-invisible' overlay property. It is otherwise unused, so this
+function can also be used as an `isearch-mode-end-hook'."
+
+ (if (and (allout-mode-p) (allout-hidden-p))
+ (allout-show-to-offshoot)))
+
+;;;_ #3 Internal Position State-Tracking - "allout-recent-*" funcs
;;; All the basic outline functions that directly do string matches to
;;; evaluate heading prefix location set the variables
-;;; `outline-recent-prefix-beginning' and `outline-recent-prefix-end'
-;;; when successful. Functions starting with `outline-recent-' all
+;;; `allout-recent-prefix-beginning' and `allout-recent-prefix-end'
+;;; when successful. Functions starting with `allout-recent-' all
;;; use this state, providing the means to avoid redundant searches
;;; for just-established data. This optimization can provide
;;; significant speed improvement, but it must be employed carefully.
-;;;_ = outline-recent-prefix-beginning
-(defvar outline-recent-prefix-beginning 0
+;;;_ = allout-recent-prefix-beginning
+(defvar allout-recent-prefix-beginning 0
"Buffer point of the start of the last topic prefix encountered.")
-(make-variable-buffer-local 'outline-recent-prefix-beginning)
-;;;_ = outline-recent-prefix-end
-(defvar outline-recent-prefix-end 0
+(make-variable-buffer-local 'allout-recent-prefix-beginning)
+;;;_ = allout-recent-prefix-end
+(defvar allout-recent-prefix-end 0
"Buffer point of the end of the last topic prefix encountered.")
-(make-variable-buffer-local 'outline-recent-prefix-end)
-;;;_ = outline-recent-end-of-subtree
-(defvar outline-recent-end-of-subtree 0
- "Buffer point last returned by outline-end-of-current-subtree.")
-(make-variable-buffer-local 'outline-recent-end-of-subtree)
-;;;_ > outline-prefix-data (beg end)
-(defmacro outline-prefix-data (beg end)
- "Register outline-prefix state data - BEGINNING and END of prefix.
-
-For reference by 'outline-recent' funcs. Returns BEGINNING."
- (` (setq outline-recent-prefix-end (, end)
- outline-recent-prefix-beginning (, beg))))
-;;;_ > outline-recent-depth ()
-(defmacro outline-recent-depth ()
+(make-variable-buffer-local 'allout-recent-prefix-end)
+;;;_ = allout-recent-depth
+(defvar allout-recent-depth 0
+ "Depth of the last topic prefix encountered.")
+(make-variable-buffer-local 'allout-recent-depth)
+;;;_ = allout-recent-end-of-subtree
+(defvar allout-recent-end-of-subtree 0
+ "Buffer point last returned by `allout-end-of-current-subtree'.")
+(make-variable-buffer-local 'allout-recent-end-of-subtree)
+;;;_ > allout-prefix-data ()
+(defsubst allout-prefix-data ()
+ "Register allout-prefix state data.
+
+For reference by `allout-recent' funcs. Returns BEGINNING."
+ (setq allout-recent-prefix-end (or (match-end 1) (match-end 2))
+ allout-recent-prefix-beginning (or (match-beginning 1)
+ (match-beginning 2))
+ allout-recent-depth (max 1 (- allout-recent-prefix-end
+ allout-recent-prefix-beginning
+ allout-header-subtraction)))
+ allout-recent-prefix-beginning)
+;;;_ > nullify-allout-prefix-data ()
+(defsubst nullify-allout-prefix-data ()
+ "Mark allout prefix data as being uninformative."
+ (setq allout-recent-prefix-end (point)
+ allout-recent-prefix-beginning (point)
+ allout-recent-depth 0)
+ allout-recent-prefix-beginning)
+;;;_ > allout-recent-depth ()
+(defsubst allout-recent-depth ()
"Return depth of last heading encountered by an outline maneuvering function.
All outline functions which directly do string matches to assess
-headings set the variables outline-recent-prefix-beginning and
-outline-recent-prefix-end if successful. This function uses those settings
+headings set the variables `allout-recent-prefix-beginning' and
+`allout-recent-prefix-end' if successful. This function uses those settings
to return the current depth."
- '(max 1 (- outline-recent-prefix-end
- outline-recent-prefix-beginning
- outline-header-subtraction)))
-;;;_ > outline-recent-prefix ()
-(defmacro outline-recent-prefix ()
- "Like outline-recent-depth, but returns text of last encountered prefix.
+ allout-recent-depth)
+;;;_ > allout-recent-prefix ()
+(defsubst allout-recent-prefix ()
+ "Like `allout-recent-depth', but returns text of last encountered prefix.
All outline functions which directly do string matches to assess
-headings set the variables outline-recent-prefix-beginning and
-outline-recent-prefix-end if successful. This function uses those settings
-to return the current depth."
- '(buffer-substring outline-recent-prefix-beginning
- outline-recent-prefix-end))
-;;;_ > outline-recent-bullet ()
-(defmacro outline-recent-bullet ()
- "Like outline-recent-prefix, but returns bullet of last encountered prefix.
+headings set the variables `allout-recent-prefix-beginning' and
+`allout-recent-prefix-end' if successful. This function uses those settings
+to return the current prefix."
+ (buffer-substring-no-properties allout-recent-prefix-beginning
+ allout-recent-prefix-end))
+;;;_ > allout-recent-bullet ()
+(defmacro allout-recent-bullet ()
+ "Like allout-recent-prefix, but returns bullet of last encountered prefix.
All outline functions which directly do string matches to assess
-headings set the variables outline-recent-prefix-beginning and
-outline-recent-prefix-end if successful. This function uses those settings
+headings set the variables `allout-recent-prefix-beginning' and
+`allout-recent-prefix-end' if successful. This function uses those settings
to return the current depth of the most recently matched topic."
- '(buffer-substring (1- outline-recent-prefix-end)
- outline-recent-prefix-end))
+ '(buffer-substring-no-properties (1- allout-recent-prefix-end)
+ allout-recent-prefix-end))
;;;_ #4 Navigation
;;;_ - Position Assessment
;;;_ : Location Predicates
-;;;_ > outline-on-current-heading-p ()
-(defun outline-on-current-heading-p ()
+;;;_ > allout-do-doublecheck ()
+(defsubst allout-do-doublecheck ()
+ "True if current item conditions qualify for checking on topic aberrance."
+ (and
+ ;; presume integrity of outline and yanked content during yank - necessary,
+ ;; to allow for level disparity of yank location and yanked text:
+ (not allout-during-yank-processing)
+ ;; allout-doublecheck-at-and-shallower is ceiling for doublecheck:
+ (<= allout-recent-depth allout-doublecheck-at-and-shallower)))
+;;;_ > allout-aberrant-container-p ()
+(defun allout-aberrant-container-p ()
+ "True if topic, or next sibling with children, contains them discontinuously.
+
+Discontinuous means an immediate offspring that is nested more
+than one level deeper than the topic.
+
+If topic has no offspring, then the next sibling with offspring will
+determine whether or not this one is determined to be aberrant.
+
+If true, then the allout-recent-* settings are calibrated on the
+offspring that qaulifies it as aberrant, ie with depth that
+exceeds the topic by more than one."
+
+ ;; This is most clearly understood when considering standard-prefix-leader
+ ;; low-level topics, which can all too easily match text not intended as
+ ;; headers. For example, any line with a leading '.' or '*' and lacking a
+ ;; following bullet qualifies without this protection. (A sequence of
+ ;; them can occur naturally, eg a typical textual bullet list.) We
+ ;; disqualify such low-level sequences when they are followed by a
+ ;; discontinuously contained child, inferring that the sequences are not
+ ;; actually connected with their prospective context.
+
+ (let ((depth (allout-depth))
+ (start-point (point))
+ done aberrant)
+ (save-excursion
+ (while (and (not done)
+ (re-search-forward allout-line-boundary-regexp nil 0))
+ (allout-prefix-data)
+ (goto-char allout-recent-prefix-beginning)
+ (cond
+ ;; sibling - continue:
+ ((eq allout-recent-depth depth))
+ ;; first offspring is excessive - aberrant:
+ ((> allout-recent-depth (1+ depth))
+ (setq done t aberrant t))
+ ;; next non-sibling is lower-depth - not aberrant:
+ (t (setq done t)))))
+ (if aberrant
+ aberrant
+ (goto-char start-point)
+ ;; recalibrate allout-recent-*
+ (allout-depth)
+ nil)))
+;;;_ > allout-on-current-heading-p ()
+(defun allout-on-current-heading-p ()
"Return non-nil if point is on current visible topics' header line.
Actually, returns prefix beginning point."
(save-excursion
- (beginning-of-line)
- (and (looking-at outline-regexp)
- (outline-prefix-data (match-beginning 0) (match-end 0)))))
-;;;_ > outline-e-o-prefix-p ()
-(defun outline-e-o-prefix-p ()
+ (allout-beginning-of-current-line)
+ (and (looking-at allout-regexp)
+ (allout-prefix-data)
+ (or (not (allout-do-doublecheck))
+ (not (allout-aberrant-container-p))))))
+;;;_ > allout-on-heading-p ()
+(defalias 'allout-on-heading-p 'allout-on-current-heading-p)
+;;;_ > allout-e-o-prefix-p ()
+(defun allout-e-o-prefix-p ()
"True if point is located where current topic prefix ends, heading begins."
- (and (save-excursion (beginning-of-line)
- (looking-at outline-regexp))
- (= (point)(save-excursion (outline-end-of-prefix)(point)))))
-;;;_ > outline-hidden-p ()
-(defmacro outline-hidden-p ()
- "True if point is in hidden text."
- '(save-excursion
- (and (re-search-backward "[\n\r]" () t)
- (= ?\r (following-char)))))
-;;;_ > outline-visible-p ()
-(defmacro outline-visible-p ()
- "True if point is not in hidden text."
- (interactive)
- '(not (outline-hidden-p)))
+ (and (save-excursion (let ((inhibit-field-text-motion t))
+ (beginning-of-line))
+ (looking-at allout-regexp))
+ (= (point)(save-excursion (allout-end-of-prefix)(point)))))
;;;_ : Location attributes
-;;;_ > outline-depth ()
-(defmacro outline-depth ()
- "Like outline-current-depth, but respects hidden as well as visible topics."
- '(save-excursion
- (if (outline-goto-prefix)
- (outline-recent-depth)
- (progn
- ;; Oops, no prefix, zero prefix data:
- (outline-prefix-data (point)(point))
- ;; ... and return 0:
- 0))))
-;;;_ > outline-current-depth ()
-(defmacro outline-current-depth ()
- "Return nesting depth of visible topic most immediately containing point."
- '(save-excursion
- (if (outline-back-to-current-heading)
- (max 1
- (- outline-recent-prefix-end
- outline-recent-prefix-beginning
- outline-header-subtraction))
- 0)))
-;;;_ > outline-get-current-prefix ()
-(defun outline-get-current-prefix ()
+;;;_ > allout-depth ()
+(defun allout-depth ()
+ "Return depth of topic most immediately containing point.
+
+Return zero if point is not within any topic.
+
+Like `allout-current-depth', but respects hidden as well as visible topics."
+ (save-excursion
+ (let ((start-point (point)))
+ (if (and (allout-goto-prefix)
+ (not (< start-point (point))))
+ allout-recent-depth
+ (progn
+ ;; Oops, no prefix, nullify it:
+ (nullify-allout-prefix-data)
+ ;; ... and return 0:
+ 0)))))
+;;;_ > allout-current-depth ()
+(defun allout-current-depth ()
+ "Return depth of visible topic most immediately containing point.
+
+Return zero if point is not within any topic."
+ (save-excursion
+ (if (allout-back-to-current-heading)
+ (max 1
+ (- allout-recent-prefix-end
+ allout-recent-prefix-beginning
+ allout-header-subtraction))
+ 0)))
+;;;_ > allout-get-current-prefix ()
+(defun allout-get-current-prefix ()
"Topic prefix of the current topic."
(save-excursion
- (if (outline-goto-prefix)
- (outline-recent-prefix))))
-;;;_ > outline-get-bullet ()
-(defun outline-get-bullet ()
+ (if (allout-goto-prefix)
+ (allout-recent-prefix))))
+;;;_ > allout-get-bullet ()
+(defun allout-get-bullet ()
"Return bullet of containing topic (visible or not)."
(save-excursion
- (and (outline-goto-prefix)
- (outline-recent-bullet))))
-;;;_ > outline-current-bullet ()
-(defun outline-current-bullet ()
+ (and (allout-goto-prefix)
+ (allout-recent-bullet))))
+;;;_ > allout-current-bullet ()
+(defun allout-current-bullet ()
"Return bullet of current (visible) topic heading, or none if none found."
- (condition-case err
+ (condition-case nil
(save-excursion
- (outline-back-to-current-heading)
- (buffer-substring (- outline-recent-prefix-end 1)
- outline-recent-prefix-end))
+ (allout-back-to-current-heading)
+ (buffer-substring-no-properties (- allout-recent-prefix-end 1)
+ allout-recent-prefix-end))
;; Quick and dirty provision, ostensibly for missing bullet:
(args-out-of-range nil))
)
-;;;_ > outline-get-prefix-bullet (prefix)
-(defun outline-get-prefix-bullet (prefix)
+;;;_ > allout-get-prefix-bullet (prefix)
+(defun allout-get-prefix-bullet (prefix)
"Return the bullet of the header prefix string PREFIX."
;; Doesn't make sense if we're old-style prefixes, but this just
;; oughtn't be called then, so forget about it...
- (if (string-match outline-regexp prefix)
- (substring prefix (1- (match-end 0)) (match-end 0))))
-
-;;;_ - Navigation macros
-;;;_ > outline-next-heading ()
-(defmacro outline-next-heading ()
- "Move to the heading for the topic \(possibly invisible) before this one.
-
-Returns the location of the heading, or nil if none found."
-
- '(if (and (bobp) (not (eobp)))
- (forward-char 1))
-
- '(if (re-search-forward outline-line-boundary-regexp nil 0)
- (progn ; Got valid location state - set vars:
- (outline-prefix-data
- (goto-char (or (match-beginning 2)
- outline-recent-prefix-beginning))
- (or (match-end 2) outline-recent-prefix-end)))))
-;;;_ : outline-this-or-next-heading
-(defun outline-this-or-next-heading ()
+ (if (string-match allout-regexp prefix)
+ (substring prefix (1- (match-end 2)) (match-end 2))))
+;;;_ > allout-sibling-index (&optional depth)
+(defun allout-sibling-index (&optional depth)
+ "Item number of this prospective topic among its siblings.
+
+If optional arg DEPTH is greater than current depth, then we're
+opening a new level, and return 0.
+
+If less than this depth, ascend to that depth and count..."
+
+ (save-excursion
+ (cond ((and depth (<= depth 0) 0))
+ ((or (null depth) (= depth (allout-depth)))
+ (let ((index 1))
+ (while (allout-previous-sibling allout-recent-depth nil)
+ (setq index (1+ index)))
+ index))
+ ((< depth allout-recent-depth)
+ (allout-ascend-to-depth depth)
+ (allout-sibling-index))
+ (0))))
+;;;_ > allout-topic-flat-index ()
+(defun allout-topic-flat-index ()
+ "Return a list indicating point's numeric section.subsect.subsubsect...
+Outermost is first."
+ (let* ((depth (allout-depth))
+ (next-index (allout-sibling-index depth))
+ (rev-sibls nil))
+ (while (> next-index 0)
+ (setq rev-sibls (cons next-index rev-sibls))
+ (setq depth (1- depth))
+ (setq next-index (allout-sibling-index depth)))
+ rev-sibls)
+ )
+
+;;;_ - Navigation routines
+;;;_ > allout-beginning-of-current-line ()
+(defun allout-beginning-of-current-line ()
+ "Like beginning of line, but to visible text."
+
+ ;; This combination of move-beginning-of-line and beginning-of-line is
+ ;; deliberate, but the (beginning-of-line) may now be superfluous.
+ (let ((inhibit-field-text-motion t))
+ (move-beginning-of-line 1)
+ (beginning-of-line)
+ (while (and (not (bobp)) (or (not (bolp)) (allout-hidden-p)))
+ (beginning-of-line)
+ (if (or (allout-hidden-p) (not (bolp)))
+ (forward-char -1)))))
+;;;_ > allout-end-of-current-line ()
+(defun allout-end-of-current-line ()
+ "Move to the end of line, past concealed text if any."
+ ;; XXX This is for symmetry with `allout-beginning-of-current-line' -
+ ;; `move-end-of-line' doesn't suffer the same problem as
+ ;; `move-beginning-of-line'.
+ (let ((inhibit-field-text-motion t))
+ (end-of-line)
+ (while (allout-hidden-p)
+ (end-of-line)
+ (if (allout-hidden-p) (forward-char 1)))))
+;;;_ > allout-beginning-of-line ()
+(defun allout-beginning-of-line ()
+ "Beginning-of-line with `allout-beginning-of-line-cycles' behavior, if set."
+
+ (interactive)
+
+ (if (or (not allout-beginning-of-line-cycles)
+ (not (equal last-command this-command)))
+ (move-beginning-of-line 1)
+ (allout-depth)
+ (let ((beginning-of-body
+ (save-excursion
+ (while (and (allout-do-doublecheck)
+ (allout-aberrant-container-p)
+ (allout-previous-visible-heading 1)))
+ (allout-beginning-of-current-entry)
+ (point))))
+ (cond ((= (current-column) 0)
+ (goto-char beginning-of-body))
+ ((< (point) beginning-of-body)
+ (allout-beginning-of-current-line))
+ ((= (point) beginning-of-body)
+ (goto-char (allout-current-bullet-pos)))
+ (t (allout-beginning-of-current-line)
+ (if (< (point) beginning-of-body)
+ ;; we were on the headline after its start:
+ (goto-char beginning-of-body)))))))
+;;;_ > allout-end-of-line ()
+(defun allout-end-of-line ()
+ "End-of-line with `allout-end-of-line-cycles' behavior, if set."
+
+ (interactive)
+
+ (if (or (not allout-end-of-line-cycles)
+ (not (equal last-command this-command)))
+ (allout-end-of-current-line)
+ (let ((end-of-entry (save-excursion
+ (allout-end-of-entry)
+ (point))))
+ (cond ((not (eolp))
+ (allout-end-of-current-line))
+ ((or (allout-hidden-p) (save-excursion
+ (forward-char -1)
+ (allout-hidden-p)))
+ (allout-back-to-current-heading)
+ (allout-show-current-entry)
+ (allout-show-children)
+ (allout-end-of-entry))
+ ((>= (point) end-of-entry)
+ (allout-back-to-current-heading)
+ (allout-end-of-current-line))
+ (t (allout-end-of-entry))))))
+;;;_ > allout-next-heading ()
+(defsubst allout-next-heading ()
+ "Move to the heading for the topic \(possibly invisible) after this one.
+
+Returns the location of the heading, or nil if none found.
+
+We skip anomolous low-level topics, a la `allout-aberrant-container-p'."
+ (if (looking-at allout-regexp)
+ (forward-char 1))
+
+ (when (re-search-forward allout-line-boundary-regexp nil 0)
+ (allout-prefix-data)
+ (and (allout-do-doublecheck)
+ ;; this will set allout-recent-* on the first non-aberrant topic,
+ ;; whether it's the current one or one that disqualifies it:
+ (allout-aberrant-container-p))
+ (goto-char allout-recent-prefix-beginning)))
+;;;_ > allout-this-or-next-heading
+(defun allout-this-or-next-heading ()
"Position cursor on current or next heading."
- ;; A throwaway non-macro that is defined after outline-next-heading
- ;; and usable by outline-mode.
- (if (not (outline-goto-prefix)) (outline-next-heading)))
-;;;_ > outline-previous-heading ()
-(defmacro outline-previous-heading ()
+ ;; A throwaway non-macro that is defined after allout-next-heading
+ ;; and usable by allout-mode.
+ (if (not (allout-goto-prefix-doublechecked)) (allout-next-heading)))
+;;;_ > allout-previous-heading ()
+(defun allout-previous-heading ()
"Move to the prior \(possibly invisible) heading line.
-Return the location of the beginning of the heading, or nil if not found."
-
- '(if (bobp)
- nil
- (outline-goto-prefix)
- (if
- ;; searches are unbounded and return nil if failed:
- (or (re-search-backward outline-line-boundary-regexp nil 0)
- (looking-at outline-bob-regexp))
- (progn ; Got valid location state - set vars:
- (outline-prefix-data
- (goto-char (or (match-beginning 2)
- outline-recent-prefix-beginning))
- (or (match-end 2) outline-recent-prefix-end))))))
+Return the location of the beginning of the heading, or nil if not found.
+
+We skip anomolous low-level topics, a la `allout-aberrant-container-p'."
+
+ (if (bobp)
+ nil
+ (let ((start-point (point)))
+ ;; allout-goto-prefix-doublechecked calls us, so we can't use it here.
+ (allout-goto-prefix)
+ (when (or (re-search-backward allout-line-boundary-regexp nil 0)
+ (looking-at allout-bob-regexp))
+ (goto-char (allout-prefix-data))
+ (if (and (allout-do-doublecheck)
+ (allout-aberrant-container-p))
+ (or (allout-previous-heading)
+ (and (goto-char start-point)
+ ;; recalibrate allout-recent-*:
+ (allout-depth)
+ nil))
+ (point))))))
+;;;_ > allout-get-invisibility-overlay ()
+(defun allout-get-invisibility-overlay ()
+ "Return the overlay at point that dictates allout invisibility."
+ (let ((overlays (overlays-at (point)))
+ got)
+ (while (and overlays (not got))
+ (if (equal (overlay-get (car overlays) 'invisible) 'allout)
+ (setq got (car overlays))
+ (pop overlays)))
+ got))
+;;;_ > allout-back-to-visible-text ()
+(defun allout-back-to-visible-text ()
+ "Move to most recent prior character that is visible, and return point."
+ (if (allout-hidden-p)
+ (goto-char (overlay-start (allout-get-invisibility-overlay))))
+ (point))
;;;_ - Subtree Charting
;;;_ " These routines either produce or assess charts, which are
;;; nested lists of the locations of topics within a subtree.
;;;
-;;; Use of charts enables efficient navigation of subtrees, by
-;;; requiring only a single regexp-search based traversal, to scope
-;;; out the subtopic locations. The chart then serves as the basis
-;;; for whatever assessment or adjustment of the subtree that is
-;;; required, without requiring redundant topic-traversal procedures.
-
-;;;_ > outline-chart-subtree (&optional levels orig-depth prev-depth)
-(defun outline-chart-subtree (&optional levels orig-depth prev-depth)
+;;; Charts enable efficient subtree navigation by providing a reusable basis
+;;; for elaborate, compound assessment and adjustment of a subtree.
+
+;;;_ > allout-chart-subtree (&optional levels visible orig-depth prev-depth)
+(defun allout-chart-subtree (&optional levels visible orig-depth prev-depth)
"Produce a location \"chart\" of subtopics of the containing topic.
-Optional argument LEVELS specifies the depth \(releative to start
-depth\) for the chart. Subsequent optional args are not for public
-use.
+Optional argument LEVELS specifies a depth limit \(relative to start
+depth) for the chart. Null LEVELS means no limit.
+
+When optional argument VISIBLE is non-nil, the chart includes
+only the visible subelements of the charted subjects.
+
+The remaining optional args are for internal use by the function.
+
+Point is left at the end of the subtree.
Charts are used to capture outline structure, so that outline-altering
routines need assess the structure only once, and then use the chart
for their elaborate manipulations.
-Topics are entered in the chart so the last one is at the car.
-The entry for each topic consists of an integer indicating the point
-at the beginning of the topic. Charts for offspring consists of a
-list containing, recursively, the charts for the respective subtopics.
-The chart for a topics' offspring precedes the entry for the topic
-itself.
+The chart entries for the topics are in reverse order, so the
+last topic is listed first. The entry for each topic consists of
+an integer indicating the point at the beginning of the topic
+prefix. Charts for offspring consists of a list containing,
+recursively, the charts for the respective subtopics. The chart
+for a topics' offspring precedes the entry for the topic itself.
The other function parameters are for internal recursion, and should
not be specified by external callers. ORIG-DEPTH is depth of topic at
starting point, and PREV-DEPTH is depth of prior topic."
- (let ((original (not orig-depth)) ; 'orig-depth' set only in recursion.
+ (let ((original (not orig-depth)) ; `orig-depth' set only in recursion.
chart curr-depth)
(if original ; Just starting?
; Register initial settings and
; position to first offspring:
- (progn (setq orig-depth (outline-depth))
+ (progn (setq orig-depth (allout-depth))
(or prev-depth (setq prev-depth (1+ orig-depth)))
- (outline-next-heading)))
+ (if visible
+ (allout-next-visible-heading 1)
+ (allout-next-heading))))
;; Loop over the current levels' siblings. Besides being more
;; efficient than tail-recursing over a level, it avoids exceeding
- ;; the typically quite constrained emacs max-lisp-eval-depth.
+ ;; the typically quite constrained Emacs max-lisp-eval-depth.
+ ;;
;; Probably would speed things up to implement loop-based stack
;; operation rather than recursing for lower levels. Bah.
+
(while (and (not (eobp))
; Still within original topic?
- (< orig-depth (setq curr-depth (outline-recent-depth)))
+ (< orig-depth (setq curr-depth allout-recent-depth))
(cond ((= prev-depth curr-depth)
;; Register this one and move on:
- (setq chart (cons (point) chart))
+ (setq chart (cons allout-recent-prefix-beginning chart))
(if (and levels (<= levels 1))
;; At depth limit - skip sublevels:
- (or (outline-next-sibling curr-depth)
+ (or (allout-next-sibling curr-depth)
;; or no more siblings - proceed to
;; next heading at lesser depth:
(while (and (<= curr-depth
- (outline-recent-depth))
- (outline-next-heading))))
- (outline-next-heading)))
+ allout-recent-depth)
+ (if visible
+ (allout-next-visible-heading 1)
+ (allout-next-heading)))))
+ (if visible
+ (allout-next-visible-heading 1)
+ (allout-next-heading))))
((and (< prev-depth curr-depth)
(or (not levels)
(> levels 0)))
;; Recurse on deeper level of curr topic:
(setq chart
- (cons (outline-chart-subtree (and levels
+ (cons (allout-chart-subtree (and levels
(1- levels))
- orig-depth
- curr-depth)
+ visible
+ orig-depth
+ curr-depth)
chart))
;; ... then continue with this one.
)
; the original level. Position
; to the end of it:
(progn (and (not (eobp)) (forward-char -1))
- (and (memq (preceding-char) '(?\n ?\^M))
- (memq (aref (buffer-substring (max 1 (- (point) 3))
- (point))
- 1)
- '(?\n ?\^M))
+ (and (= (preceding-char) ?\n)
+ (= (aref (buffer-substring (max 1 (- (point) 3))
+ (point))
+ 1)
+ ?\n)
(forward-char -1))
- (setq outline-recent-end-of-subtree (point))))
-
+ (setq allout-recent-end-of-subtree (point))))
+
chart ; (nreverse chart) not necessary,
; and maybe not preferable.
))
-;;;_ > outline-chart-siblings (&optional start end)
-(defun outline-chart-siblings (&optional start end)
+;;;_ > allout-chart-siblings (&optional start end)
+(defun allout-chart-siblings (&optional start end)
"Produce a list of locations of this and succeeding sibling topics.
-Effectively a top-level chart of siblings. See 'outline-chart-subtree'
+Effectively a top-level chart of siblings. See `allout-chart-subtree'
for an explanation of charts."
(save-excursion
- (if (outline-goto-prefix)
- (let ((chart (list (point))))
- (while (outline-next-sibling)
- (setq chart (cons (point) chart)))
- (if chart (setq chart (nreverse chart)))))))
-;;;_ > outline-chart-to-reveal (chart depth)
-(defun outline-chart-to-reveal (chart depth)
+ (when (allout-goto-prefix-doublechecked)
+ (let ((chart (list (point))))
+ (while (allout-next-sibling)
+ (setq chart (cons (point) chart)))
+ (if chart (setq chart (nreverse chart)))))))
+;;;_ > allout-chart-to-reveal (chart depth)
+(defun allout-chart-to-reveal (chart depth)
"Return a flat list of hidden points in subtree CHART, up to DEPTH.
+If DEPTH is nil, include hidden points at any depth.
+
Note that point can be left at any of the points on chart, or at the
start point."
(let (result here)
- (while (and (or (eq depth t) (> depth 0))
+ (while (and (or (null depth) (> depth 0))
chart)
(setq here (car chart))
(if (listp here)
- (let ((further (outline-chart-to-reveal here (or (eq depth t)
- (1- depth)))))
+ (let ((further (allout-chart-to-reveal here (if (null depth)
+ depth
+ (1- depth)))))
;; We're on the start of a subtree - recurse with it, if there's
;; more depth to go:
(if further (setq result (append further result)))
(setq chart (cdr chart)))
(goto-char here)
- (if (= (preceding-char) ?\r)
+ (if (allout-hidden-p)
(setq result (cons here result)))
(setq chart (cdr chart))))
result))
-;;;_ X outline-chart-spec (chart spec &optional exposing)
-(defun outline-chart-spec (chart spec &optional exposing)
- "Not yet \(if ever\) implemented.
-
-Produce exposure directives given topic/subtree CHART and an exposure SPEC.
-
-Exposure spec indicates the locations to be exposed and the prescribed
-exposure status. Optional arg EXPOSING is an integer, with 0
-indicating pending concealment, anything higher indicating depth to
-which subtopic headers should be exposed, and negative numbers
-indicating (negative of) the depth to which subtopic headers and
-bodies should be exposed.
-
-The produced list can have two types of entries. Bare numbers
-indicate points in the buffer where topic headers that should be
-exposed reside.
-
- - bare negative numbers indicates that the topic starting at the
- point which is the negative of the number should be opened,
- including their entries.
- - bare positive values indicate that this topic header should be
- openned.
- - Lists signify the beginning and end points of regions that should
- be flagged, and the flag to employ. (For concealment: '\(\?r\)', and
- exposure:"
- (while spec
- (cond ((listp spec)
- )
- )
- (setq spec (cdr spec)))
- )
+;;;_ X allout-chart-spec (chart spec &optional exposing)
+;; (defun allout-chart-spec (chart spec &optional exposing)
+;; "Not yet \(if ever) implemented.
+
+;; Produce exposure directives given topic/subtree CHART and an exposure SPEC.
+
+;; Exposure spec indicates the locations to be exposed and the prescribed
+;; exposure status. Optional arg EXPOSING is an integer, with 0
+;; indicating pending concealment, anything higher indicating depth to
+;; which subtopic headers should be exposed, and negative numbers
+;; indicating (negative of) the depth to which subtopic headers and
+;; bodies should be exposed.
+
+;; The produced list can have two types of entries. Bare numbers
+;; indicate points in the buffer where topic headers that should be
+;; exposed reside.
+
+;; - bare negative numbers indicates that the topic starting at the
+;; point which is the negative of the number should be opened,
+;; including their entries.
+;; - bare positive values indicate that this topic header should be
+;; opened.
+;; - Lists signify the beginning and end points of regions that should
+;; be flagged, and the flag to employ. (For concealment: `\(\?r\)', and
+;; exposure:"
+;; (while spec
+;; (cond ((listp spec)
+;; )
+;; )
+;; (setq spec (cdr spec)))
+;; )
;;;_ - Within Topic
-;;;_ > outline-goto-prefix ()
-(defun outline-goto-prefix ()
- "Put point at beginning of outline prefix for immediately containing topic.
+;;;_ > allout-goto-prefix ()
+(defun allout-goto-prefix ()
+ "Put point at beginning of immediately containing outline topic.
-Goes to first subsequent topic if none immediately containing.
+Goes to most immediate subsequent topic if none immediately containing.
Not sensitive to topic visibility.
-Returns a the point at the beginning of the prefix, or nil if none."
+Returns the point at the beginning of the prefix, or nil if none."
(let (done)
(while (and (not done)
- (re-search-backward "[\n\r]" nil 1))
+ (search-backward "\n" nil 1))
(forward-char 1)
- (if (looking-at outline-regexp)
- (setq done (outline-prefix-data (match-beginning 0)
- (match-end 0)))
+ (if (looking-at allout-regexp)
+ (setq done (allout-prefix-data))
(forward-char -1)))
(if (bobp)
- (cond ((looking-at outline-regexp)
- (outline-prefix-data (match-beginning 0)(match-end 0)))
- ((outline-next-heading)
- (outline-prefix-data (match-beginning 0)(match-end 0)))
+ (cond ((looking-at allout-regexp)
+ (allout-prefix-data))
+ ((allout-next-heading))
(done))
done)))
-;;;_ > outline-end-of-prefix ()
-(defun outline-end-of-prefix (&optional ignore-decorations)
+;;;_ > allout-goto-prefix-doublechecked ()
+(defun allout-goto-prefix-doublechecked ()
+ "Put point at beginning of immediately containing outline topic.
+
+Like `allout-goto-prefix', but shallow topics \(according to
+`allout-doublecheck-at-and-shallower') are checked and
+disqualified for child containment discontinuity, according to
+`allout-aberrant-container-p'."
+ (if (allout-goto-prefix)
+ (if (and (allout-do-doublecheck)
+ (allout-aberrant-container-p))
+ (allout-previous-heading)
+ (point))))
+
+;;;_ > allout-end-of-prefix ()
+(defun allout-end-of-prefix (&optional ignore-decorations)
"Position cursor at beginning of header text.
If optional IGNORE-DECORATIONS is non-nil, put just after bullet,
otherwise skip white space between bullet and ensuing text."
- (if (not (outline-goto-prefix))
+ (if (not (allout-goto-prefix-doublechecked))
nil
- (let ((match-data (match-data)))
- (goto-char (match-end 0))
- (if ignore-decorations
- t
- (while (looking-at "[0-9]") (forward-char 1))
- (if (and (not (eolp)) (looking-at "\\s-")) (forward-char 1)))
- (store-match-data match-data))
+ (goto-char allout-recent-prefix-end)
+ (if ignore-decorations
+ t
+ (while (looking-at "[0-9]") (forward-char 1))
+ (if (and (not (eolp)) (looking-at "\\s-")) (forward-char 1)))
;; Reestablish where we are:
- (outline-current-depth)))
-;;;_ > outline-current-bullet-pos ()
-(defun outline-current-bullet-pos ()
+ (allout-current-depth)))
+;;;_ > allout-current-bullet-pos ()
+(defun allout-current-bullet-pos ()
"Return position of current \(visible) topic's bullet."
- (if (not (outline-current-depth))
+ (if (not (allout-current-depth))
nil
- (1- (match-end 0))))
-;;;_ > outline-back-to-current-heading ()
-(defun outline-back-to-current-heading ()
- "Move to heading line of current topic, or beginning if already on the line."
-
- (beginning-of-line)
- (prog1 (or (outline-on-current-heading-p)
- (and (re-search-backward (concat "^\\(" outline-regexp "\\)")
- nil
- 'move)
- (outline-prefix-data (match-beginning 1)(match-end 1))))
- (if (interactive-p) (outline-end-of-prefix))))
-;;;_ > outline-pre-next-preface ()
-(defun outline-pre-next-preface ()
+ (1- allout-recent-prefix-end)))
+;;;_ > allout-back-to-current-heading ()
+(defun allout-back-to-current-heading ()
+ "Move to heading line of current topic, or beginning if not in a topic.
+
+If interactive, we position at the end of the prefix.
+
+Return value of resulting point, unless we started outside
+of (before any) topics, in which case we return nil."
+
+ (allout-beginning-of-current-line)
+ (let ((bol-point (point)))
+ (if (allout-goto-prefix-doublechecked)
+ (if (<= (point) bol-point)
+ (if (interactive-p)
+ (allout-end-of-prefix)
+ (point))
+ (goto-char (point-min))
+ nil))))
+;;;_ > allout-back-to-heading ()
+(defalias 'allout-back-to-heading 'allout-back-to-current-heading)
+;;;_ > allout-pre-next-prefix ()
+(defun allout-pre-next-prefix ()
"Skip forward to just before the next heading line.
Returns that character position."
- (if (re-search-forward outline-line-boundary-regexp nil 'move)
- (prog1 (goto-char (match-beginning 0))
- (outline-prefix-data (match-beginning 2)(match-end 2)))))
-;;;_ > outline-end-of-current-subtree ()
-(defun outline-end-of-current-subtree ()
- "Put point at the end of the last leaf in the currently visible topic."
- (interactive)
- (outline-back-to-current-heading)
- (let ((level (outline-recent-depth)))
- (outline-next-heading)
+ (if (allout-next-heading)
+ (goto-char (1- allout-recent-prefix-beginning))))
+;;;_ > allout-end-of-subtree (&optional current include-trailing-blank)
+(defun allout-end-of-subtree (&optional current include-trailing-blank)
+ "Put point at the end of the last leaf in the containing topic.
+
+Optional CURRENT means put point at the end of the containing
+visible topic.
+
+Optional INCLUDE-TRAILING-BLANK means include a trailing blank line, if
+any, as part of the subtree. Otherwise, that trailing blank will be
+excluded as delimiting whitespace between topics.
+
+Returns the value of point."
+ (interactive "P")
+ (if current
+ (allout-back-to-current-heading)
+ (allout-goto-prefix-doublechecked))
+ (let ((level allout-recent-depth))
+ (allout-next-heading)
(while (and (not (eobp))
- (> (outline-recent-depth) level))
- (outline-next-heading))
- (and (not (eobp)) (forward-char -1))
- (and (memq (preceding-char) '(?\n ?\^M))
- (memq (aref (buffer-substring (max 1 (- (point) 3)) (point)) 1)
- '(?\n ?\^M))
+ (> allout-recent-depth level))
+ (allout-next-heading))
+ (if (eobp)
+ (allout-end-of-entry)
+ (forward-char -1))
+ (if (and (not include-trailing-blank) (= ?\n (preceding-char)))
(forward-char -1))
- (setq outline-recent-end-of-subtree (point))))
-;;;_ > outline-beginning-of-current-entry ()
-(defun outline-beginning-of-current-entry ()
- "When not already there, position point at beginning of current topic's body.
+ (setq allout-recent-end-of-subtree (point))))
+;;;_ > allout-end-of-current-subtree (&optional include-trailing-blank)
+(defun allout-end-of-current-subtree (&optional include-trailing-blank)
+
+ "Put point at end of last leaf in currently visible containing topic.
+
+Optional INCLUDE-TRAILING-BLANK means include a trailing blank line, if
+any, as part of the subtree. Otherwise, that trailing blank will be
+excluded as delimiting whitespace between topics.
+
+Returns the value of point."
+ (interactive)
+ (allout-end-of-subtree t include-trailing-blank))
+;;;_ > allout-beginning-of-current-entry ()
+(defun allout-beginning-of-current-entry ()
+ "When not already there, position point at beginning of current topic header.
If already there, move cursor to bullet for hot-spot operation.
-\(See outline-mode doc string for details on hot-spot operation.)"
+\(See `allout-mode' doc string for details of hot-spot operation.)"
(interactive)
(let ((start-point (point)))
- (outline-end-of-prefix)
+ (move-beginning-of-line 1)
+ (if (< 0 (allout-current-depth))
+ (goto-char allout-recent-prefix-end)
+ (goto-char (point-min)))
+ (allout-end-of-prefix)
(if (and (interactive-p)
(= (point) start-point))
- (goto-char (outline-current-bullet-pos)))))
-;;;_ > outline-end-of-current-entry ()
-(defun outline-end-of-current-entry ()
- "Position the point at the end of the current topics' entry."
+ (goto-char (allout-current-bullet-pos)))))
+;;;_ > allout-end-of-entry (&optional inclusive)
+(defun allout-end-of-entry (&optional inclusive)
+ "Position the point at the end of the current topics' entry.
+
+Optional INCLUSIVE means also include trailing empty line, if any. When
+unset, whitespace between items separates them even when the items are
+collapsed."
(interactive)
- (outline-show-entry)
- (prog1 (outline-pre-next-preface)
- (if (and (not (bobp))(looking-at "^$"))
- (forward-char -1))))
+ (allout-pre-next-prefix)
+ (if (and (not inclusive) (not (bobp)) (= ?\n (preceding-char)))
+ (forward-char -1))
+ (point))
+;;;_ > allout-end-of-current-heading ()
+(defun allout-end-of-current-heading ()
+ (interactive)
+ (allout-beginning-of-current-entry)
+ (search-forward "\n" nil t)
+ (forward-char -1))
+(defalias 'allout-end-of-heading 'allout-end-of-current-heading)
+;;;_ > allout-get-body-text ()
+(defun allout-get-body-text ()
+ "Return the unmangled body text of the topic immediately containing point."
+ (save-excursion
+ (allout-end-of-prefix)
+ (if (not (search-forward "\n" nil t))
+ nil
+ (backward-char 1)
+ (let ((pre-body (point)))
+ (if (not pre-body)
+ nil
+ (allout-end-of-entry t)
+ (if (not (= pre-body (point)))
+ (buffer-substring-no-properties (1+ pre-body) (point))))
+ )
+ )
+ )
+ )
;;;_ - Depth-wise
-;;;_ > outline-ascend-to-depth (depth)
-(defun outline-ascend-to-depth (depth)
+;;;_ > allout-ascend-to-depth (depth)
+(defun allout-ascend-to-depth (depth)
"Ascend to depth DEPTH, returning depth if successful, nil if not."
- (if (and (> depth 0)(<= depth (outline-depth)))
- (let ((last-good (point)))
- (while (and (< depth (outline-depth))
- (setq last-good (point))
- (outline-beginning-of-level)
- (outline-previous-heading)))
- (if (= (outline-recent-depth) depth)
- (progn (goto-char outline-recent-prefix-beginning)
- depth)
- (goto-char last-good)
- nil))
- (if (interactive-p) (outline-end-of-prefix))))
-;;;_ > outline-descend-to-depth (depth)
-(defun outline-descend-to-depth (depth)
+ (if (and (> depth 0)(<= depth (allout-depth)))
+ (let (last-ascended)
+ (while (and (< depth allout-recent-depth)
+ (setq last-ascended (allout-ascend))))
+ (goto-char allout-recent-prefix-beginning)
+ (if (interactive-p) (allout-end-of-prefix))
+ (and last-ascended allout-recent-depth))))
+;;;_ > allout-ascend ()
+(defun allout-ascend ()
+ "Ascend one level, returning t if successful, nil if not."
+ (prog1
+ (if (allout-beginning-of-level)
+ (allout-previous-heading))
+ (if (interactive-p) (allout-end-of-prefix))))
+;;;_ > allout-descend-to-depth (depth)
+(defun allout-descend-to-depth (depth)
"Descend to depth DEPTH within current topic.
Returning depth if successful, nil if not."
(let ((start-point (point))
- (start-depth (outline-depth)))
+ (start-depth (allout-depth)))
(while
- (and (> (outline-depth) 0)
- (not (= depth (outline-recent-depth))) ; ... not there yet
- (outline-next-heading) ; ... go further
- (< start-depth (outline-recent-depth)))) ; ... still in topic
- (if (and (> (outline-depth) 0)
- (= (outline-recent-depth) depth))
+ (and (> (allout-depth) 0)
+ (not (= depth allout-recent-depth)) ; ... not there yet
+ (allout-next-heading) ; ... go further
+ (< start-depth allout-recent-depth))) ; ... still in topic
+ (if (and (> (allout-depth) 0)
+ (= allout-recent-depth depth))
depth
(goto-char start-point)
nil))
)
-;;;_ > outline-up-current-level (arg &optional dont-complain)
-(defun outline-up-current-level (arg &optional dont-complain)
- "Move out ARG levels from current visible topic.
-
-Positions on heading line of containing topic. Error if unable to
-ascend that far, or nil if unable to ascend but optional arg
-DONT-COMPLAIN is non-nil."
+;;;_ > allout-up-current-level (arg)
+(defun allout-up-current-level (arg)
+ "Move out ARG levels from current visible topic."
(interactive "p")
- (outline-back-to-current-heading)
- (let ((present-level (outline-recent-depth))
- (last-good (point))
- failed
- return)
- ;; Loop for iterating arg:
- (while (and (> (outline-recent-depth) 1)
- (> arg 0)
- (not (bobp))
- (not failed))
- (setq last-good (point))
- ;; Loop for going back over current or greater depth:
- (while (and (not (< (outline-recent-depth) present-level))
- (or (outline-previous-visible-heading 1)
- (not (setq failed present-level)))))
- (setq present-level (outline-current-depth))
- (setq arg (- arg 1)))
- (if (or failed
- (> arg 0))
- (progn (goto-char last-good)
- (if (interactive-p) (outline-end-of-prefix))
- (if (not dont-complain)
- (error "Can't ascend past outermost level.")
- (if (interactive-p) (outline-end-of-prefix))
- nil))
- (if (interactive-p) (outline-end-of-prefix))
- outline-recent-prefix-beginning)))
+ (let ((start-point (point)))
+ (allout-back-to-current-heading)
+ (if (not (allout-ascend))
+ (progn (goto-char start-point)
+ (error "Can't ascend past outermost level"))
+ (if (interactive-p) (allout-end-of-prefix))
+ allout-recent-prefix-beginning)))
;;;_ - Linear
-;;;_ > outline-next-sibling (&optional depth backward)
-(defun outline-next-sibling (&optional depth backward)
- "Like outline-forward-current-level, but respects invisible topics.
+;;;_ > allout-next-sibling (&optional depth backward)
+(defun allout-next-sibling (&optional depth backward)
+ "Like `allout-forward-current-level', but respects invisible topics.
Traverse at optional DEPTH, or current depth if none specified.
Go backward if optional arg BACKWARD is non-nil.
-Return depth if successful, nil otherwise."
+Return the start point of the new topic if successful, nil otherwise."
- (if (and backward (bobp))
+ (if (if backward (bobp) (eobp))
nil
- (let ((start-depth (or depth (outline-depth)))
+ (let ((target-depth (or depth (allout-depth)))
(start-point (point))
+ (start-prefix-beginning allout-recent-prefix-beginning)
+ (count 0)
+ leaping
last-depth)
- (while (and (not (if backward (bobp) (eobp)))
- (if backward (outline-previous-heading)
- (outline-next-heading))
- (> (setq last-depth (outline-recent-depth)) start-depth)))
- (if (and (not (eobp))
- (and (> (or last-depth (outline-depth)) 0)
- (= (outline-recent-depth) start-depth)))
- outline-recent-prefix-beginning
- (goto-char start-point)
- (if depth (outline-depth) start-depth)
- nil))))
-;;;_ > outline-previous-sibling (&optional depth backward)
-(defun outline-previous-sibling (&optional depth backward)
- "Like outline-forward-current-level,but backwards & respect invisible topics.
+ (while (and
+ ;; done too few single steps to resort to the leap routine:
+ (not leaping)
+ ;; not at limit:
+ (not (if backward (bobp) (eobp)))
+ ;; still traversable:
+ (if backward (allout-previous-heading) (allout-next-heading))
+ ;; we're below the target depth
+ (> (setq last-depth allout-recent-depth) target-depth))
+ (setq count (1+ count))
+ (if (> count 7) ; lists are commonly 7 +- 2, right?-)
+ (setq leaping t)))
+ (cond (leaping
+ (or (allout-next-sibling-leap target-depth backward)
+ (progn
+ (goto-char start-point)
+ (if depth (allout-depth) target-depth)
+ nil)))
+ ((and (not (eobp))
+ (and (> (or last-depth (allout-depth)) 0)
+ (= allout-recent-depth target-depth))
+ (not (= start-prefix-beginning
+ allout-recent-prefix-beginning)))
+ allout-recent-prefix-beginning)
+ (t
+ (goto-char start-point)
+ (if depth (allout-depth) target-depth)
+ nil)))))
+;;;_ > allout-next-sibling-leap (&optional depth backward)
+(defun allout-next-sibling-leap (&optional depth backward)
+ "Like `allout-next-sibling', but by direct search for topic at depth.
+
+Traverse at optional DEPTH, or current depth if none specified.
+
+Go backward if optional arg BACKWARD is non-nil.
+
+Return the start point of the new topic if successful, nil otherwise.
+
+Costs more than regular `allout-next-sibling' for short traversals:
+
+ - we have to check the prior \(next, if travelling backwards)
+ item to confirm connectivity with the prior topic, and
+ - if confirmed, we have to reestablish the allout-recent-* settings with
+ some extra navigation
+ - if confirmation fails, we have to do more work to recover
+
+It is an increasingly big win when there are many intervening
+offspring before the next sibling, however, so
+`allout-next-sibling' resorts to this if it finds itself in that
+situation."
+
+ (if (if backward (bobp) (eobp))
+ nil
+ (let* ((start-point (point))
+ (target-depth (or depth (allout-depth)))
+ (search-whitespace-regexp nil)
+ (depth-biased (- target-depth 2))
+ (expression (if (<= target-depth 1)
+ allout-depth-one-regexp
+ (format allout-depth-specific-regexp
+ depth-biased depth-biased)))
+ found
+ done)
+ (while (not done)
+ (setq found (if backward
+ (re-search-backward expression nil 'to-limit)
+ (forward-char 1)
+ (re-search-forward expression nil 'to-limit)))
+ (if (and found (allout-aberrant-container-p))
+ (setq found nil))
+ (setq done (or found (if backward (bobp) (eobp)))))
+ (if (not found)
+ (progn (goto-char start-point)
+ nil)
+ ;; rationale: if any intervening items were at a lower depth, we
+ ;; would now be on the first offspring at the target depth - ie,
+ ;; the preceeding item (per the search direction) must be at a
+ ;; lesser depth. that's all we need to check.
+ (if backward (allout-next-heading) (allout-previous-heading))
+ (if (< allout-recent-depth target-depth)
+ ;; return to start and reestablish allout-recent-*:
+ (progn
+ (goto-char start-point)
+ (allout-depth)
+ nil)
+ (goto-char found)
+ ;; locate cursor and set allout-recent-*:
+ (allout-goto-prefix))))))
+;;;_ > allout-previous-sibling (&optional depth backward)
+(defun allout-previous-sibling (&optional depth backward)
+ "Like `allout-forward-current-level' backwards, respecting invisible topics.
Optional DEPTH specifies depth to traverse, default current depth.
Optional BACKWARD reverses direction.
Return depth if successful, nil otherwise."
- (outline-next-sibling depth (not backward))
+ (allout-next-sibling depth (not backward))
)
-;;;_ > outline-snug-back ()
-(defun outline-snug-back ()
- "Position cursor at end of previous topic
+;;;_ > allout-snug-back ()
+(defun allout-snug-back ()
+ "Position cursor at end of previous topic.
Presumes point is at the start of a topic prefix."
(if (or (bobp) (eobp))
nil
(forward-char -1))
- (if (or (bobp) (not (memq (preceding-char) '(?\n ?\^M))))
+ (if (or (bobp) (not (= ?\n (preceding-char))))
nil
- (forward-char -1)
- (if (or (bobp) (not (memq (preceding-char) '(?\n ?\^M))))
- (forward-char -1)))
+ (forward-char -1))
(point))
-;;;_ > outline-beginning-of-level ()
-(defun outline-beginning-of-level ()
+;;;_ > allout-beginning-of-level ()
+(defun allout-beginning-of-level ()
"Go back to the first sibling at this level, visible or not."
- (outline-end-of-level 'backward))
-;;;_ > outline-end-of-level (&optional backward)
-(defun outline-end-of-level (&optional backward)
+ (allout-end-of-level 'backward))
+;;;_ > allout-end-of-level (&optional backward)
+(defun allout-end-of-level (&optional backward)
"Go to the last sibling at this level, visible or not."
- (let ((depth (outline-depth)))
- (while (outline-previous-sibling depth nil))
- (prog1 (outline-recent-depth)
- (if (interactive-p) (outline-end-of-prefix)))))
-;;;_ > outline-next-visible-heading (arg)
-(defun outline-next-visible-heading (arg)
+ (let ((depth (allout-depth)))
+ (while (allout-previous-sibling depth nil))
+ (prog1 allout-recent-depth
+ (if (interactive-p) (allout-end-of-prefix)))))
+;;;_ > allout-next-visible-heading (arg)
+(defun allout-next-visible-heading (arg)
"Move to the next ARG'th visible heading line, backward if arg is negative.
-Move as far as possible in indicated direction \(beginning or end of
-buffer\) if headings are exhausted."
+Move to buffer limit in indicated direction if headings are exhausted."
(interactive "p")
- (let* ((backward (if (< arg 0) (setq arg (* -1 arg))))
+ (let* ((inhibit-field-text-motion t)
+ (backward (if (< arg 0) (setq arg (* -1 arg))))
(step (if backward -1 1))
- (start-point (point))
prev got)
- (while (> arg 0) ; limit condition
- (while (and (not (if backward (bobp)(eobp))) ; boundary condition
- ;; Move, skipping over all those concealed lines:
- (< -1 (forward-line step))
- (not (setq got (looking-at outline-regexp)))))
+ (while (> arg 0)
+ (while (and
+ ;; Boundary condition:
+ (not (if backward (bobp)(eobp)))
+ ;; Move, skipping over all concealed lines in one fell swoop:
+ (prog1 (condition-case nil (or (line-move step) t)
+ (error nil))
+ (allout-beginning-of-current-line))
+ ;; Deal with apparent header line:
+ (if (not (looking-at allout-regexp))
+ ;; not a header line, keep looking:
+ t
+ (allout-prefix-data)
+ (if (and (allout-do-doublecheck)
+ (allout-aberrant-container-p))
+ ;; skip this aberrant prospective header line:
+ t
+ ;; this prospective headerline qualifies - register:
+ (setq got allout-recent-prefix-beginning)
+ ;; and break the loop:
+ nil))))
;; Register this got, it may be the last:
(if got (setq prev got))
(setq arg (1- arg)))
(cond (got ; Last move was to a prefix:
- (outline-prefix-data (match-beginning 0) (match-end 0))
- (outline-end-of-prefix))
+ (allout-end-of-prefix))
(prev ; Last move wasn't, but prev was:
- (outline-prefix-data (match-beginning 0) (match-end 0)))
+ (goto-char prev)
+ (allout-end-of-prefix))
((not backward) (end-of-line) nil))))
-;;;_ > outline-previous-visible-heading (arg)
-(defun outline-previous-visible-heading (arg)
+;;;_ > allout-previous-visible-heading (arg)
+(defun allout-previous-visible-heading (arg)
"Move to the previous heading line.
With argument, repeats or can move forward if negative.
-A heading line is one that starts with a `*' (or that outline-regexp
+A heading line is one that starts with a `*' (or that `allout-regexp'
matches)."
(interactive "p")
- (outline-next-visible-heading (- arg)))
-;;;_ > outline-forward-current-level (arg)
-(defun outline-forward-current-level (arg)
+ (prog1 (allout-next-visible-heading (- arg))
+ (if (interactive-p) (allout-end-of-prefix))))
+;;;_ > allout-forward-current-level (arg)
+(defun allout-forward-current-level (arg)
"Position point at the next heading of the same level.
Takes optional repeat-count, goes backward if count is negative.
Returns resulting position, else nil if none found."
(interactive "p")
- (let ((start-depth (outline-current-depth))
- (start-point (point))
+ (let ((start-depth (allout-current-depth))
(start-arg arg)
- (backward (> 0 arg))
- last-depth
- (last-good (point))
- at-boundary)
+ (backward (> 0 arg)))
(if (= 0 start-depth)
(error "No siblings, not in a topic..."))
(if backward (setq arg (* -1 arg)))
- (while (not (or (zerop arg)
- at-boundary))
- (while (and (not (if backward (bobp) (eobp)))
- (if backward (outline-previous-visible-heading 1)
- (outline-next-visible-heading 1))
- (> (setq last-depth (outline-recent-depth)) start-depth)))
- (if (and last-depth (= last-depth start-depth)
- (not (if backward (bobp) (eobp))))
- (setq last-good (point)
- arg (1- arg))
- (setq at-boundary t)))
- (if (and (not (eobp))
- (= arg 0)
- (and (> (or last-depth (outline-depth)) 0)
- (= (outline-recent-depth) start-depth)))
- outline-recent-prefix-beginning
- (goto-char last-good)
- (if (not (interactive-p))
- nil
- (outline-end-of-prefix)
- (error "Hit %s level %d topic, traversed %d of %d requested."
- (if backward "first" "last")
- (outline-recent-depth)
- (- (abs start-arg) arg)
- (abs start-arg))))))
-;;;_ > outline-backward-current-level (arg)
-(defun outline-backward-current-level (arg)
- "Inverse of `outline-forward-current-level'."
+ (allout-back-to-current-heading)
+ (while (and (not (zerop arg))
+ (if backward
+ (allout-previous-sibling)
+ (allout-next-sibling)))
+ (setq arg (1- arg)))
+ (if (not (interactive-p))
+ nil
+ (allout-end-of-prefix)
+ (if (not (zerop arg))
+ (error "Hit %s level %d topic, traversed %d of %d requested"
+ (if backward "first" "last")
+ allout-recent-depth
+ (- (abs start-arg) arg)
+ (abs start-arg))))))
+;;;_ > allout-backward-current-level (arg)
+(defun allout-backward-current-level (arg)
+ "Inverse of `allout-forward-current-level'."
(interactive "p")
(if (interactive-p)
(let ((current-prefix-arg (* -1 arg)))
- (call-interactively 'outline-forward-current-level))
- (outline-forward-current-level (* -1 arg))))
+ (call-interactively 'allout-forward-current-level))
+ (allout-forward-current-level (* -1 arg))))
;;;_ #5 Alteration
;;;_ - Fundamental
-;;;_ > outline-before-change-protect (beg end)
-(defun outline-before-change-protect (beg end)
- "Outline before-change hook, regulates changes to concealed text.
-
-Reveal concealed text that would be changed by current command, and
-offer user choice to commit or forego the change. Unchanged text is
-reconcealed. User has option to have changed text reconcealed.
-
-Undo commands are specially treated - the user is not prompted for
-choice, the undoes are always committed (based on presumption that the
-things being undone were already subject to this regulation routine),
-and undoes always leave the changed stuff exposed.
-
-Changes to concealed regions are ignored while file is being written.
-\(This is for the sake of functions that do change the file during
-writes, like crypt and zip modes.)
-
-Locally bound in outline buffers to 'before-change-function', which
-in emacs 19 is run before any change to the buffer. (Has no effect
-in Emacs 18, which doesn't support before-change-function.)
-
-Any functions which set ['this-command' to 'undo', or which set]
-'outline-override-protect' non-nil (as does, eg, outline-flag-chars)
-are exempt from this restriction."
- (if (and (outline-mode-p)
- ; outline-override-protect
- ; set by functions that know what
- ; they're doing, eg outline internals:
- (not outline-override-protect)
- (not outline-during-write-cue)
- (save-match-data ; Preserve operation position state.
- ; Both beginning and end chars must
- ; be exposed:
- (save-excursion (if (memq this-command '(newline open-line))
- ;; Compensate for stupid emacs {new,
- ;; open-}line display optimization:
- (setq beg (1+ beg)
- end (1+ end)))
- (goto-char beg)
- (or (outline-hidden-p)
- (and (not (= beg end))
- (goto-char end)
- (outline-hidden-p))))))
- (save-match-data
- (if (equal this-command 'undo)
- ;; Allow undo without inhibition.
- ;; - Undoing new and open-line hits stupid emacs redisplay
- ;; optimization (em 19 cmds.c, ~ line 200).
- ;; - Presumably, undoing what was properly protected when
- ;; done.
- ;; - Undo may be users' only recourse in protection faults.
- ;; So, expose what getting changed:
- (progn (message "Undo! - exposing concealed target...")
- (if (outline-hidden-p)
- (outline-show-children))
- (message "Undo!"))
- (let (response
- (rehide-completely (save-excursion (outline-goto-prefix)
- (outline-hidden-p)))
- rehide-place)
-
- (save-excursion
- (if (condition-case err
- ;; Condition case to catch keyboard quits during reads.
- (progn
- ; Give them a peek where
- (save-excursion
- (if (eolp) (setq rehide-place
- (outline-goto-prefix)))
- (outline-show-entry))
- ; Present the message, but...
- ; leave the cursor at the location
- ; until they respond:
- ; Then interpret the response:
- (while
- (progn
- (message (concat "Change inside concealed"
- " region - do it? "
- "(n or 'y'/'r'eclose)"))
- (setq response (read-char))
- (not
- (cond ((memq response '(?r ?R))
- (setq response 'reclose))
- ((memq response '(?y ?Y ? ))
- (setq response t))
- ((memq response '(?n ?N 127))
- (setq response nil)
- t)
- ((eq response ??)
- (message
- "'r' means 'yes, then reclose")
- nil)
- (t (message "Please answer y, n, or r")
- (sit-for 1)
- nil)))))
- response)
- (quit nil))
- ; Continue:
- (if (eq response 'reclose)
- (save-excursion
- (if rehide-place (goto-char rehide-place))
- (if rehide-completely
- (outline-hide-current-entry-completely)
- (outline-hide-current-entry)))
- (if (outline-ascend-to-depth (1- (outline-recent-depth)))
- (outline-show-children)
- (outline-show-to-offshoot)))
- ; Prevent:
- (if rehide-completely
- (save-excursion
- (if rehide-place (goto-char rehide-place))
- (outline-hide-current-entry-completely))
- (outline-hide-current-entry))
- (error (concat
- "Change within concealed region prevented.")))))))
- ) ; if
- ) ; defun
-;;;_ = outline-post-goto-bullet
-(defvar outline-post-goto-bullet nil
- "Outline internal var, for `outline-pre-command-business' hot-spot operation.
+;;;_ = allout-post-goto-bullet
+(defvar allout-post-goto-bullet nil
+ "Outline internal var, for `allout-pre-command-business' hot-spot operation.
When set, tells post-processing to reposition on topic bullet, and
-then unset it. Set by outline-pre-command-business when implementing
+then unset it. Set by `allout-pre-command-business' when implementing
hot-spot operation, where literal characters typed over a topic bullet
are mapped to the command of the corresponding control-key on the
-outline-mode-map.")
-(make-variable-buffer-local 'outline-post-goto-bullet)
-;;;_ > outline-post-command-business ()
-(defun outline-post-command-business ()
- "Outline post-command-hook function.
-
-- Null outline-override-protect, so it's not left open.
-
-- Implement (and clear) outline-post-goto-bullet, for hot-spot
+`allout-mode-map'.")
+(make-variable-buffer-local 'allout-post-goto-bullet)
+;;;_ = allout-command-counter
+(defvar allout-command-counter 0
+ "Counter that monotonically increases in allout-mode buffers.
+
+Set by `allout-pre-command-business', to support allout addons in
+coordinating with allout activity.")
+(make-variable-buffer-local 'allout-command-counter)
+;;;_ > allout-post-command-business ()
+(defun allout-post-command-business ()
+ "Outline `post-command-hook' function.
+
+- Implement (and clear) `allout-post-goto-bullet', for hot-spot
outline commands.
-- Massages buffer-undo-list so successive, standard character self-inserts are
- aggregated. This kludge compensates for lack of undo bunching when
- before-change-function is used."
+- Decrypt topic currently being edited if it was encrypted for a save."
; Apply any external change func:
- (if (not (outline-mode-p)) ; In outline-mode.
+ (if (not (allout-mode-p)) ; In allout-mode.
nil
- (setq outline-override-protect nil)
- (if outline-during-write-cue
- ;; Was used by outline-before-change-protect, done with it now:
- (setq outline-during-write-cue nil))
- ;; Undo bunching business:
- (if (and (listp buffer-undo-list) ; Undo history being kept.
- (equal this-command 'self-insert-command)
- (equal last-command 'self-insert-command))
- (let* ((prev-stuff (cdr buffer-undo-list))
- (before-prev-stuff (cdr (cdr prev-stuff)))
- cur-cell cur-from cur-to
- prev-cell prev-from prev-to)
- (if (and before-prev-stuff ; Goes back far enough to bother,
- (not (car prev-stuff)) ; and break before current,
- (not (car before-prev-stuff)) ; !and break before prev!
- (setq prev-cell (car (cdr prev-stuff))) ; contents now,
- (setq cur-cell (car buffer-undo-list)) ; contents prev.
-
- ;; cur contents denote a single char insertion:
- (numberp (setq cur-from (car cur-cell)))
- (numberp (setq cur-to (cdr cur-cell)))
- (= 1 (- cur-to cur-from))
-
- ;; prev contents denote fewer than aggregate-limit
- ;; insertions:
- (numberp (setq prev-from (car prev-cell)))
- (numberp (setq prev-to (cdr prev-cell)))
- ; Below threshold:
- (> outline-undo-aggregation (- prev-to prev-from)))
- (setq buffer-undo-list
- (cons (cons prev-from cur-to)
- (cdr (cdr (cdr buffer-undo-list))))))))
- ;; Implement -post-goto-bullet, if set: (must be after undo business)
- (if (and outline-post-goto-bullet
- (outline-current-bullet-pos))
- (progn (goto-char (outline-current-bullet-pos))
- (setq outline-post-goto-bullet nil)))
+
+ (if (and (boundp 'allout-after-save-decrypt)
+ allout-after-save-decrypt)
+ (allout-after-saves-handler))
+
+ ;; Implement allout-post-goto-bullet, if set:
+ (if (and allout-post-goto-bullet
+ (allout-current-bullet-pos))
+ (progn (goto-char (allout-current-bullet-pos))
+ (setq allout-post-goto-bullet nil)))
))
-;;;_ > outline-pre-command-business ()
-(defun outline-pre-command-business ()
- "Outline pre-command-hook function for outline buffers.
-
-Implements special behavior when cursor is on bullet char.
-
-Self-insert characters are reinterpreted control-character references
-into the outline-mode-map. The outline-mode post-command hook will
-position a cursor that has moved as a result of such reinterpretation,
-on the destination topic's bullet, when the cursor wound up in the
-
-The upshot is that you can get easy, single (unmodified) key outline
-maneuvering and general operations by positioning the cursor on the
-bullet char, and it continues until you deliberately some non-outline
-motion command to relocate the cursor off of a bullet char."
-
- (if (and (boundp 'outline-mode)
- outline-mode
- (eq this-command 'self-insert-command)
- (eq (point)(outline-current-bullet-pos)))
-
- (let* ((this-key-num (if (numberp last-command-event)
- last-command-event))
- mapped-binding)
-
- ; Map upper-register literals
- ; to lower register:
- (if (<= 96 this-key-num)
- (setq this-key-num (- this-key-num 32)))
- ; Check if we have a literal:
- (if (and (<= 64 this-key-num)
- (>= 96 this-key-num))
- (setq mapped-binding
- (lookup-key 'outline-mode-map
- (concat outline-command-prefix
- (char-to-string (- this-key-num 64))))))
- (if mapped-binding
- (setq outline-post-goto-bullet t
- this-command mapped-binding)))))
-;;;_ > outline-find-file-hook ()
-(defun outline-find-file-hook ()
- "Activate outline-mode when `outline-auto-activation' & `outline-layout' are non-nil.
-
-See `outline-init' for setup instructions."
- (if (and outline-auto-activation
- (not (outline-mode-p))
- outline-layout)
- (outline-mode t)))
-;;;_ : Establish the hooks
-(add-hook 'post-command-hook 'outline-post-command-business)
-(add-hook 'pre-command-hook 'outline-pre-command-business)
+;;;_ > allout-pre-command-business ()
+(defun allout-pre-command-business ()
+ "Outline `pre-command-hook' function for outline buffers.
+
+Among other things, implements special behavior when the cursor is on the
+topic bullet character.
+
+When the cursor is on the bullet character, self-insert characters are
+reinterpreted as the corresponding control-character in the
+`allout-mode-map'. The `allout-mode' `post-command-hook' insures that
+the cursor which has moved as a result of such reinterpretation is
+positioned on the bullet character of the destination topic.
+
+The upshot is that you can get easy, single \(ie, unmodified\) key
+outline maneuvering operations by positioning the cursor on the bullet
+char. When in this mode you can use regular cursor-positioning
+command/keystrokes to relocate the cursor off of a bullet character to
+return to regular interpretation of self-insert characters."
+
+ (if (not (allout-mode-p))
+ nil
+ ;; Increment allout-command-counter
+ (setq allout-command-counter (1+ allout-command-counter))
+ ;; Do hot-spot navigation.
+ (if (and (eq this-command 'self-insert-command)
+ (eq (point)(allout-current-bullet-pos)))
+ (allout-hotspot-key-handler))))
+;;;_ > allout-hotspot-key-handler ()
+(defun allout-hotspot-key-handler ()
+ "Catchall handling of key bindings in hot-spots.
+
+Translates unmodified keystrokes to corresponding allout commands, when
+they would qualify if prefixed with the allout-command-prefix, and sets
+this-command accordingly.
+
+Returns the qualifying command, if any, else nil."
+ (interactive)
+ (let* ((key-string (if (numberp last-command-char)
+ (char-to-string last-command-char)))
+ (key-num (cond ((numberp last-command-char) last-command-char)
+ ;; for XEmacs character type:
+ ((and (fboundp 'characterp)
+ (apply 'characterp (list last-command-char)))
+ (apply 'char-to-int (list last-command-char)))
+ (t 0)))
+ mapped-binding)
+
+ (if (zerop key-num)
+ nil
+
+ (if (and
+ ;; exclude control chars and escape:
+ (<= 33 key-num)
+ (setq mapped-binding
+ (or (and (assoc key-string allout-keybindings-list)
+ ;; translate literal membership on list:
+ (cadr (assoc key-string allout-keybindings-list)))
+ ;; translate as a keybinding:
+ (key-binding (concat allout-command-prefix
+ (char-to-string
+ (if (and (<= 97 key-num) ; "a"
+ (>= 122 key-num)) ; "z"
+ (- key-num 96) key-num)))
+ t))))
+ ;; Qualified as an allout command - do hot-spot operation.
+ (setq allout-post-goto-bullet t)
+ ;; accept-defaults nil, or else we'll get allout-item-icon-key-handler.
+ (setq mapped-binding (key-binding (char-to-string key-num))))
+
+ (while (keymapp mapped-binding)
+ (setq mapped-binding
+ (lookup-key mapped-binding (vector (read-char)))))
+
+ (if mapped-binding
+ (setq this-command mapped-binding)))))
+
+;;;_ > allout-find-file-hook ()
+(defun allout-find-file-hook ()
+ "Activate `allout-mode' on non-nil `allout-auto-activation', `allout-layout'.
+
+See `allout-init' for setup instructions."
+ (if (and allout-auto-activation
+ (not (allout-mode-p))
+ allout-layout)
+ (allout-mode t)))
;;;_ - Topic Format Assessment
-;;;_ > outline-solicit-alternate-bullet (depth &optional current-bullet)
-(defun outline-solicit-alternate-bullet (depth &optional current-bullet)
+;;;_ > allout-solicit-alternate-bullet (depth &optional current-bullet)
+(defun allout-solicit-alternate-bullet (depth &optional current-bullet)
"Prompt for and return a bullet char as an alternative to the current one.
Offer one suitable for current depth DEPTH as default."
- (let* ((default-bullet (or current-bullet
- (outline-bullet-for-depth depth)))
- (sans-escapes (regexp-sans-escapes outline-bullets-string))
- (choice (solicit-char-in-string
- (format "Select bullet: %s ('%s' default): "
- sans-escapes
- default-bullet)
- sans-escapes
- t)))
+ (let* ((default-bullet (or (and (stringp current-bullet) current-bullet)
+ (allout-bullet-for-depth depth)))
+ (sans-escapes (regexp-sans-escapes allout-bullets-string))
+ choice)
+ (save-excursion
+ (goto-char (allout-current-bullet-pos))
+ (setq choice (solicit-char-in-string
+ (format "Select bullet: %s ('%s' default): "
+ sans-escapes
+ (substring-no-properties default-bullet))
+ sans-escapes
+ t)))
+ (message "")
(if (string= choice "") default-bullet choice))
)
-;;;_ > outline-sibling-index (&optional depth)
-(defun outline-sibling-index (&optional depth)
- "Item number of this prospective topic among its siblings.
-
-If optional arg depth is greater than current depth, then we're
-opening a new level, and return 0.
-
-If less than this depth, ascend to that depth and count..."
-
- (save-excursion
- (cond ((and depth (<= depth 0) 0))
- ((or (not depth) (= depth (outline-depth)))
- (let ((index 1))
- (while (outline-previous-sibling (outline-recent-depth) nil)
- (setq index (1+ index)))
- index))
- ((< depth (outline-recent-depth))
- (outline-ascend-to-depth depth)
- (outline-sibling-index))
- (0))))
-;;;_ > outline-distinctive-bullet (bullet)
-(defun outline-distinctive-bullet (bullet)
- "True if bullet is one of those on outline-distinctive-bullets-string."
- (string-match (regexp-quote bullet) outline-distinctive-bullets-string))
-;;;_ > outline-numbered-type-prefix (&optional prefix)
-(defun outline-numbered-type-prefix (&optional prefix)
+;;;_ > allout-distinctive-bullet (bullet)
+(defun allout-distinctive-bullet (bullet)
+ "True if BULLET is one of those on `allout-distinctive-bullets-string'."
+ (string-match (regexp-quote bullet) allout-distinctive-bullets-string))
+;;;_ > allout-numbered-type-prefix (&optional prefix)
+(defun allout-numbered-type-prefix (&optional prefix)
"True if current header prefix bullet is numbered bullet."
- (and outline-numbered-bullet
- (string= outline-numbered-bullet
+ (and allout-numbered-bullet
+ (string= allout-numbered-bullet
+ (if prefix
+ (allout-get-prefix-bullet prefix)
+ (allout-get-bullet)))))
+;;;_ > allout-encrypted-type-prefix (&optional prefix)
+(defun allout-encrypted-type-prefix (&optional prefix)
+ "True if current header prefix bullet is for an encrypted entry \(body)."
+ (and allout-topic-encryption-bullet
+ (string= allout-topic-encryption-bullet
(if prefix
- (outline-get-prefix-bullet prefix)
- (outline-get-bullet)))))
-;;;_ > outline-bullet-for-depth (&optional depth)
-(defun outline-bullet-for-depth (&optional depth)
+ (allout-get-prefix-bullet prefix)
+ (allout-get-bullet)))))
+;;;_ > allout-bullet-for-depth (&optional depth)
+(defun allout-bullet-for-depth (&optional depth)
"Return outline topic bullet suited to optional DEPTH, or current depth."
;; Find bullet in plain-bullets-string modulo DEPTH.
- (if outline-stylish-prefixes
- (char-to-string (aref outline-plain-bullets-string
+ (if allout-stylish-prefixes
+ (char-to-string (aref allout-plain-bullets-string
(% (max 0 (- depth 2))
- outline-plain-bullets-string-len)))
- outline-primary-bullet)
+ allout-plain-bullets-string-len)))
+ allout-primary-bullet)
)
;;;_ - Topic Production
-;;;_ > outline-make-topic-prefix (&optional prior-bullet
-(defun outline-make-topic-prefix (&optional prior-bullet
+;;;_ > allout-make-topic-prefix (&optional prior-bullet
+(defun allout-make-topic-prefix (&optional prior-bullet
new
depth
solicit
PRIOR-BULLET indicates the bullet of the prefix being changed, or
nil if none. This bullet may be preserved (other options
-notwithstanding) if it is on the outline-distinctive-bullets-string,
+notwithstanding) if it is on the `allout-distinctive-bullets-string',
for instance.
Second arg NEW indicates that a new topic is being opened after the
Third arg DEPTH forces the topic prefix to that depth, regardless of
the current topics' depth.
-Fourth arg SOLICIT non-nil provokes solicitation from the user of a
-choice among the valid bullets. (This overrides other all the
-options, including, eg, a distinctive PRIOR-BULLET.)
+If SOLICIT is non-nil, then the choice of bullet is solicited from
+user. If it's a character, then that character is offered as the
+default, otherwise the one suited to the context \(according to
+distinction or depth) is offered. \(This overrides other options,
+including, eg, a distinctive PRIOR-BULLET.) If non-nil, then the
+context-specific bullet is used.
-Fifth arg, NUMBER-CONTROL, matters only if 'outline-numbered-bullet'
+Fifth arg, NUMBER-CONTROL, matters only if `allout-numbered-bullet'
is non-nil *and* soliciting was not explicitly invoked. Then
NUMBER-CONTROL non-nil forces prefix to either numbered or
denumbered format, depending on the value of the sixth arg, INDEX.
that the index for the numbered prefix will be derived, by counting
siblings back to start of level. If INDEX is a number, then that
number is used as the index for the numbered prefix (allowing, eg,
-sequential renumbering to not requre this function counting back the
+sequential renumbering to not require this function counting back the
index for each successive sibling)."
;;;_ . Code:
;; The options are ordered in likely frequence of use, most common
(let* (body
numbering
denumbering
- (depth (or depth (outline-depth)))
- (header-lead outline-header-prefix)
+ (depth (or depth (allout-depth)))
+ (header-lead allout-header-prefix)
(bullet-char
;; Getting value for bullet char is practically the whole job:
(cond
; Simplest situation - level 1:
- ((<= depth 1) (setq header-lead "") outline-primary-bullet)
+ ((<= depth 1) (setq header-lead "") allout-primary-bullet)
; Simple, too: all asterisks:
- (outline-old-style-prefixes
+ (allout-old-style-prefixes
;; Cheat - make body the whole thing, null out header-lead and
;; bullet-char:
(setq body (make-string depth
- (string-to-char outline-primary-bullet)))
+ (string-to-char allout-primary-bullet)))
(setq header-lead "")
"")
((progn (setq body (make-string (- depth 2) ?\ ))
;; The actual condition:
solicit)
- (let* ((got (outline-solicit-alternate-bullet depth)))
+ (let* ((got (allout-solicit-alternate-bullet depth solicit)))
;; Gotta check whether we're numbering and got a numbered bullet:
- (setq numbering (and outline-numbered-bullet
+ (setq numbering (and allout-numbered-bullet
(not (and number-control (not index)))
- (string= got outline-numbered-bullet)))
+ (string= got allout-numbered-bullet)))
;; Now return what we got, regardless:
got))
;; Numbering invoked through args:
- ((and outline-numbered-bullet number-control)
+ ((and allout-numbered-bullet number-control)
(if (setq numbering (not (setq denumbering (not index))))
- outline-numbered-bullet
+ allout-numbered-bullet
(if (and prior-bullet
- (not (string= outline-numbered-bullet
+ (not (string= allout-numbered-bullet
prior-bullet)))
prior-bullet
- (outline-bullet-for-depth depth))))
+ (allout-bullet-for-depth depth))))
;;; Neither soliciting nor controlled numbering ;;;
;;; (may be controlled denumbering, tho) ;;;
;; Check wrt previous sibling:
((and new ; only check for new prefixes
- (<= depth (outline-depth))
- outline-numbered-bullet ; ... & numbering enabled
+ (<= depth (allout-depth))
+ allout-numbered-bullet ; ... & numbering enabled
(not denumbering)
(let ((sibling-bullet
(save-excursion
;; Locate correct sibling:
- (or (>= depth (outline-depth))
- (outline-ascend-to-depth depth))
- (outline-get-bullet))))
+ (or (>= depth (allout-depth))
+ (allout-ascend-to-depth depth))
+ (allout-get-bullet))))
(if (and sibling-bullet
- (string= outline-numbered-bullet sibling-bullet))
+ (string= allout-numbered-bullet sibling-bullet))
(setq numbering sibling-bullet)))))
;; Distinctive prior bullet?
((and prior-bullet
- (outline-distinctive-bullet prior-bullet)
+ (allout-distinctive-bullet prior-bullet)
;; Either non-numbered:
- (or (not (and outline-numbered-bullet
- (string= prior-bullet outline-numbered-bullet)))
+ (or (not (and allout-numbered-bullet
+ (string= prior-bullet allout-numbered-bullet)))
;; or numbered, and not denumbering:
(setq numbering (not denumbering)))
;; Here 'tis:
prior-bullet))
;; Else, standard bullet per depth:
- ((outline-bullet-for-depth depth)))))
+ ((allout-bullet-for-depth depth)))))
(concat header-lead
body
bullet-char
(if numbering
(format "%d" (cond ((and index (numberp index)) index)
- (new (1+ (outline-sibling-index depth)))
- ((outline-sibling-index))))))
+ (new (1+ (allout-sibling-index depth)))
+ ((allout-sibling-index))))))
)
)
-;;;_ > outline-open-topic (relative-depth &optional before)
-(defun outline-open-topic (relative-depth &optional before)
+;;;_ > allout-open-topic (relative-depth &optional before offer-recent-bullet)
+(defun allout-open-topic (relative-depth &optional before offer-recent-bullet)
"Open a new topic at depth DEPTH.
New topic is situated after current one, unless optional flag BEFORE
-is non-nil, or unless current line is complete empty (not even
-whitespace), in which case open is done on current line.
+is non-nil, or unless current line is completely empty - lacking even
+whitespace - in which case open is done on the current line.
+
+When adding an offspring, it will be added immediately after the parent if
+the other offspring are exposed, or after the last child if the offspring
+are hidden. \(The intervening offspring will be exposed in the latter
+case.)
+
+If OFFER-RECENT-BULLET is true, offer to use the bullet of the prior sibling.
+
+Runs
Nuances:
- Creation of sibling or nested topics is with respect to the topic
you're starting from, even when creating backwards. This way you
can easily create a sibling in front of the current topic without
- having to go to its preceeding sibling, and then open forward
+ having to go to its preceding sibling, and then open forward
from there."
- (let* ((depth (+ (outline-current-depth) relative-depth))
+ (allout-beginning-of-current-line)
+ (let* ((inhibit-field-text-motion t)
+ (depth (+ (allout-current-depth) relative-depth))
(opening-on-blank (if (looking-at "^\$")
(not (setq before nil))))
- opening-numbered ; Will get while computing ref-topic, below
- ref-depth ; Will get while computing ref-topic, next
+ ;; bunch o vars set while computing ref-topic
+ opening-numbered
+ ref-depth
+ ref-bullet
(ref-topic (save-excursion
(cond ((< relative-depth 0)
- (outline-ascend-to-depth depth))
+ (allout-ascend-to-depth depth))
((>= relative-depth 1) nil)
- (t (outline-back-to-current-heading)))
- (setq ref-depth (outline-recent-depth))
+ (t (allout-back-to-current-heading)))
+ (setq ref-depth allout-recent-depth)
+ (setq ref-bullet
+ (if (> allout-recent-prefix-end 1)
+ (allout-recent-bullet)
+ ""))
(setq opening-numbered
(save-excursion
- (and outline-numbered-bullet
+ (and allout-numbered-bullet
(or (<= relative-depth 0)
- (outline-descend-to-depth depth))
- (if (outline-numbered-type-prefix)
- outline-numbered-bullet))))
+ (allout-descend-to-depth depth))
+ (if (allout-numbered-type-prefix)
+ allout-numbered-bullet))))
(point)))
dbl-space
- doing-beginning)
+ doing-beginning
+ start end)
(if (not opening-on-blank)
; Positioning and vertical
; padding - only if not
; opening-on-blank:
- (progn
+ (progn
(goto-char ref-topic)
(setq dbl-space ; Determine double space action:
(or (and (<= relative-depth 0) ; not descending;
(save-excursion
- ;; at b-o-b or preceeded by a blank line?
+ ;; at b-o-b or preceded by a blank line?
(or (> 0 (forward-line -1))
(looking-at "^\\s-*$")
(bobp)))
(save-excursion
;; succeeded by a blank line?
- (outline-end-of-current-subtree)
- (bolp)))
+ (allout-end-of-current-subtree)
+ (looking-at "\n\n")))
(and (= ref-depth 1)
(or before
(= depth 1)
(save-excursion
;; Don't already have following
;; vertical padding:
- (not (outline-pre-next-preface)))))))
+ (not (allout-pre-next-prefix)))))))
- ; Position to prior heading,
- ; if inserting backwards, and
- ; not going outwards:
+ ;; Position to prior heading, if inserting backwards, and not
+ ;; going outwards:
(if (and before (>= relative-depth 0))
- (progn (outline-back-to-current-heading)
+ (progn (allout-back-to-current-heading)
(setq doing-beginning (bobp))
(if (not (bobp))
- (outline-previous-heading)))
+ (allout-previous-heading)))
(if (and before (bobp))
- (outline-unprotected (open-line 1))))
+ (open-line 1)))
(if (<= relative-depth 0)
;; Not going inwards, don't snug up:
(if doing-beginning
- (outline-unprotected (open-line (if dbl-space 2 1)))
+ (if (not dbl-space)
+ (open-line 1)
+ (open-line 2))
(if before
(progn (end-of-line)
- (outline-pre-next-preface)
- (while (= ?\r (following-char))
+ (allout-pre-next-prefix)
+ (while (and (= ?\n (following-char))
+ (save-excursion
+ (forward-char 1)
+ (allout-hidden-p)))
(forward-char 1))
(if (not (looking-at "^$"))
- (outline-unprotected (open-line 1))))
- (outline-end-of-current-subtree)))
- ;; Going inwards - double-space if first offspring is,
- ;; otherwise snug up.
- (end-of-line) ; So we skip any concealed progeny.
- (outline-pre-next-preface)
+ (open-line 1)))
+ (allout-end-of-current-subtree)
+ (if (looking-at "\n\n") (forward-char 1))))
+ ;; Going inwards - double-space if first offspring is
+ ;; double-spaced, otherwise snug up.
+ (allout-end-of-entry)
+ (if (eobp)
+ (newline 1)
+ (line-move 1))
+ (allout-beginning-of-current-line)
+ (backward-char 1)
(if (bolp)
;; Blank lines between current header body and next
;; header - get to last substantive (non-white-space)
;; line in body:
- (re-search-backward "[^ \t\n]" nil t))
+ (progn (setq dbl-space t)
+ (re-search-backward "[^ \t\n]" nil t)))
+ (if (looking-at "\n\n")
+ (setq dbl-space t))
(if (save-excursion
- (outline-next-heading)
- (if (> (outline-recent-depth) ref-depth)
- ;; This is an offspring.
- (progn (forward-line -1)
- (looking-at "^\\s-*$"))))
+ (allout-next-heading)
+ (when (> allout-recent-depth ref-depth)
+ ;; This is an offspring.
+ (forward-line -1)
+ (looking-at "^\\s-*$")))
(progn (forward-line 1)
- (outline-unprotected (open-line 1))))
- (end-of-line))
+ (open-line 1)
+ (forward-line 1)))
+ (allout-end-of-current-line))
+
;;(if doing-beginning (goto-char doing-beginning))
(if (not (bobp))
+ ;; We insert a newline char rather than using open-line to
+ ;; avoid rear-stickiness inheritence of read-only property.
(progn (if (and (not (> depth ref-depth))
(not before))
- (outline-unprotected (open-line 1))
- (if (> depth ref-depth)
- (outline-unprotected (newline 1))
+ (open-line 1)
+ (if (and (not dbl-space) (> depth ref-depth))
+ (newline 1)
(if dbl-space
- (outline-unprotected (open-line 1))
+ (open-line 1)
(if (not before)
- (outline-unprotected (newline 1))))))
- (if dbl-space
- (outline-unprotected (newline 1)))
+ (newline 1)))))
+ (if (and dbl-space (not (> relative-depth 0)))
+ (newline 1))
(if (and (not (eobp))
- (not (bolp)))
+ (or (not (bolp))
+ (and (not (bobp))
+ ;; bolp doesnt detect concealed
+ ;; trailing newlines, compensate:
+ (save-excursion
+ (forward-char -1)
+ (allout-hidden-p)))))
(forward-char 1))))
))
- (insert-string (concat (outline-make-topic-prefix opening-numbered
- t
- depth)
- " "))
-
- ;;(if doing-beginning (save-excursion (newline (if dbl-space 2 1))))
-
-
- (outline-rebullet-heading nil ;;; solicit
- depth ;;; depth
- nil ;;; number-control
- nil ;;; index
- t) (end-of-line)
+ (setq start (point))
+ (insert (concat (allout-make-topic-prefix opening-numbered t depth)
+ " "))
+ (setq end (1+ (point)))
+
+ (allout-rebullet-heading (and offer-recent-bullet ref-bullet)
+ depth nil nil t)
+ (if (> relative-depth 0)
+ (save-excursion (goto-char ref-topic)
+ (allout-show-children)))
+ (end-of-line)
+
+ (run-hook-with-args 'allout-structure-added-hook start end)
)
)
-;;;_ . open-topic contingencies
-;;;_ ; base topic - one from which open was issued
-;;;_ , beginning char
-;;;_ , amount of space before will be used, unless openning in place
-;;;_ , end char will be used, unless opening before (and it still may)
-;;;_ ; absolute depth of new topic
-;;;_ ! insert in place - overrides most stuff
-;;;_ ; relative depth of new re base
-;;;_ ; before or after base topic
-;;;_ ; spacing around topic, if any, prior to new topic and at same depth
-;;;_ ; buffer boundaries - special provisions for beginning and end ob
-;;;_ ; level 1 topics have special provisions also - double space.
-;;;_ ; location of new topic
-;;;_ .
-;;;_ > outline-open-subtopic (arg)
-(defun outline-open-subtopic (arg)
+;;;_ > allout-open-subtopic (arg)
+(defun allout-open-subtopic (arg)
"Open new topic header at deeper level than the current one.
Negative universal arg means to open deeper, but place the new topic
prior to the current one."
(interactive "p")
- (outline-open-topic 1 (> 0 arg)))
-;;;_ > outline-open-sibtopic (arg)
-(defun outline-open-sibtopic (arg)
+ (allout-open-topic 1 (> 0 arg) (< 1 arg)))
+;;;_ > allout-open-sibtopic (arg)
+(defun allout-open-sibtopic (arg)
"Open new topic header at same level as the current one.
+Positive universal arg means to use the bullet of the prior sibling.
+
Negative universal arg means to place the new topic prior to the current
one."
(interactive "p")
- (outline-open-topic 0 (> 0 arg)))
-;;;_ > outline-open-supertopic (arg)
-(defun outline-open-supertopic (arg)
+ (allout-open-topic 0 (> 0 arg) (not (= 1 arg))))
+;;;_ > allout-open-supertopic (arg)
+(defun allout-open-supertopic (arg)
"Open new topic header at shallower level than the current one.
Negative universal arg means to open shallower, but place the new
topic prior to the current one."
(interactive "p")
- (outline-open-topic -1 (> 0 arg)))
+ (allout-open-topic -1 (> 0 arg) (< 1 arg)))
;;;_ - Outline Alteration
;;;_ : Topic Modification
-;;;_ = outline-former-auto-filler
-(defvar outline-former-auto-filler nil
- "Name of modal fill function being wrapped by outline-auto-fill.")
-;;;_ > outline-auto-fill ()
-(defun outline-auto-fill ()
- "Outline-mode autofill function.
+;;;_ = allout-former-auto-filler
+(defvar allout-former-auto-filler nil
+ "Name of modal fill function being wrapped by `allout-auto-fill'.")
+;;;_ > allout-auto-fill ()
+(defun allout-auto-fill ()
+ "`allout-mode' autofill function.
Maintains outline hanging topic indentation if
-`outline-use-hanging-indents' is set."
- (let ((fill-prefix (if outline-use-hanging-indents
- ;; Check for topic header indentation:
- (save-excursion
- (beginning-of-line)
- (if (looking-at outline-regexp)
- ;; ... construct indentation to account for
- ;; length of topic prefix:
- (make-string (progn (outline-end-of-prefix)
- (current-column))
- ?\ ))))))
- (if (or outline-former-auto-filler outline-use-hanging-indents)
- (do-auto-fill))))
-;;;_ > outline-reindent-body (old-depth new-depth &optional number)
-(defun outline-reindent-body (old-depth new-depth &optional number)
- "Reindent body lines which were indented at old-depth to new-depth.
+`allout-use-hanging-indents' is set."
+
+ (when (not allout-inhibit-auto-fill)
+ (let ((fill-prefix (if allout-use-hanging-indents
+ ;; Check for topic header indentation:
+ (save-excursion
+ (beginning-of-line)
+ (if (looking-at allout-regexp)
+ ;; ... construct indentation to account for
+ ;; length of topic prefix:
+ (make-string (progn (allout-end-of-prefix)
+ (current-column))
+ ?\ )))))
+ (use-auto-fill-function (or allout-outside-normal-auto-fill-function
+ auto-fill-function
+ 'do-auto-fill)))
+ (if (or allout-former-auto-filler allout-use-hanging-indents)
+ (funcall use-auto-fill-function)))))
+;;;_ > allout-reindent-body (old-depth new-depth &optional number)
+(defun allout-reindent-body (old-depth new-depth &optional number)
+ "Reindent body lines which were indented at OLD-DEPTH to NEW-DEPTH.
Optional arg NUMBER indicates numbering is being added, and it must
-be accomodated.
+be accommodated.
Note that refill of indented paragraphs is not done."
(save-excursion
- (outline-end-of-prefix)
+ (allout-end-of-prefix)
(let* ((new-margin (current-column))
excess old-indent-begin old-indent-end
- curr-ind
;; We want the column where the header-prefix text started
;; *before* the prefix was changed, so we infer it relative
;; to the new margin and the shift in depth:
(old-margin (+ old-depth (- new-margin new-depth))))
-
+
;; Process lines up to (but excluding) next topic header:
- (outline-unprotected
+ (allout-unprotected
(save-match-data
(while
- (and (re-search-forward "[\n\r]\\(\\s-*\\)"
+ (and (re-search-forward "\n\\(\\s-*\\)"
nil
t)
;; Register the indent data, before we reset the
- ;; match data with a subsequent 'looking-at':
+ ;; match data with a subsequent `looking-at':
(setq old-indent-begin (match-beginning 1)
old-indent-end (match-end 1))
- (not (looking-at outline-regexp)))
- (if (> 0 (setq excess (- (current-column)
- old-margin)))
+ (not (looking-at allout-regexp)))
+ (if (> 0 (setq excess (- (- old-indent-end old-indent-begin)
+ old-margin)))
;; Text starts left of old margin - don't adjust:
nil
;; Text was hanging at or right of old left margin -
;; reindent it, preserving its existing indentation
;; beyond the old margin:
(delete-region old-indent-begin old-indent-end)
- (indent-to (+ new-margin excess)))))))))
-;;;_ > outline-rebullet-current-heading (arg)
-(defun outline-rebullet-current-heading (arg)
- "Like non-interactive version 'outline-rebullet-heading'.
-
-But \(only\) affects visible heading containing point.
-
-With repeat count, solicit for bullet."
- (interactive "P")
- (save-excursion (outline-back-to-current-heading)
- (outline-end-of-prefix)
- (outline-rebullet-heading (not arg) ;;; solicit
- nil ;;; depth
- nil ;;; number-control
- nil ;;; index
- t) ;;; do-successors
- )
- )
-;;;_ > outline-rebullet-heading (&optional solicit ...)
-(defun outline-rebullet-heading (&optional solicit
+ (indent-to (+ new-margin excess (current-column))))))))))
+;;;_ > allout-rebullet-current-heading (arg)
+(defun allout-rebullet-current-heading (arg)
+ "Solicit new bullet for current visible heading."
+ (interactive "p")
+ (let ((initial-col (current-column))
+ (on-bullet (eq (point)(allout-current-bullet-pos)))
+ from to
+ (backwards (if (< arg 0)
+ (setq arg (* arg -1)))))
+ (while (> arg 0)
+ (save-excursion (allout-back-to-current-heading)
+ (allout-end-of-prefix)
+ (setq from allout-recent-prefix-beginning
+ to allout-recent-prefix-end)
+ (allout-rebullet-heading t ;;; solicit
+ nil ;;; depth
+ nil ;;; number-control
+ nil ;;; index
+ t) ;;; do-successors
+ (run-hook-with-args 'allout-exposure-change-hook
+ from to t))
+ (setq arg (1- arg))
+ (if (<= arg 0)
+ nil
+ (setq initial-col nil) ; Override positioning back to init col
+ (if (not backwards)
+ (allout-next-visible-heading 1)
+ (allout-goto-prefix-doublechecked)
+ (allout-next-visible-heading -1))))
+ (message "Done.")
+ (cond (on-bullet (goto-char (allout-current-bullet-pos)))
+ (initial-col (move-to-column initial-col)))))
+;;;_ > allout-rebullet-heading (&optional solicit ...)
+(defun allout-rebullet-heading (&optional solicit
new-depth
number-control
index
All args are optional.
-If SOLICIT is non-nil then the choice of bullet is solicited from
-user. Otherwise the distinctiveness of the bullet or the topic
-depth determines it.
+If SOLICIT is non-nil, then the choice of bullet is solicited from
+user. If it's a character, then that character is offered as the
+default, otherwise the one suited to the context \(according to
+distinction or depth) is offered. If non-nil, then the
+context-specific bullet is just used.
Second arg DEPTH forces the topic prefix to that depth, regardless
-of the topics current depth.
+of the topic's current depth.
Third arg NUMBER-CONTROL can force the prefix to or away from
-numbered form. It has effect only if 'outline-numbered-bullet' is
+numbered form. It has effect only if `allout-numbered-bullet' is
non-nil and soliciting was not explicitly invoked (via first arg).
Its effect, numbering or denumbering, then depends on the setting
of the forth arg, INDEX.
non-nil NUMBER-CONTROL) forces a numbered-prefix form. If non-nil
INDEX is a number, then that number is used for the numbered
prefix. Non-nil and non-number means that the index for the
-numbered prefix will be derived by outline-make-topic-prefix.
+numbered prefix will be derived by allout-make-topic-prefix.
Fifth arg DO-SUCCESSORS t means re-resolve count on succeeding
siblings.
-Cf vars 'outline-stylish-prefixes', 'outline-old-style-prefixes',
-and 'outline-numbered-bullet', which all affect the behavior of
+Cf vars `allout-stylish-prefixes', `allout-old-style-prefixes',
+and `allout-numbered-bullet', which all affect the behavior of
this function."
- (let* ((current-depth (outline-depth))
+ (let* ((current-depth (allout-depth))
(new-depth (or new-depth current-depth))
- (mb outline-recent-prefix-beginning)
- (me outline-recent-prefix-end)
- (current-bullet (buffer-substring (- me 1) me))
- (new-prefix (outline-make-topic-prefix current-bullet
+ (mb allout-recent-prefix-beginning)
+ (me allout-recent-prefix-end)
+ (current-bullet (buffer-substring-no-properties (- me 1) me))
+ (has-annotation (get-text-property mb 'allout-was-hidden))
+ (new-prefix (allout-make-topic-prefix current-bullet
nil
new-depth
solicit
;; New prefix probably different from old:
; get rid of old one:
- (outline-unprotected (delete-region mb me))
+ (allout-unprotected (delete-region mb me))
(goto-char mb)
; Dispense with number if
; numbered-bullet prefix:
- (if (and outline-numbered-bullet
- (string= outline-numbered-bullet current-bullet)
+ (if (and allout-numbered-bullet
+ (string= allout-numbered-bullet current-bullet)
(looking-at "[0-9]+"))
- (outline-unprotected
+ (allout-unprotected
(delete-region (match-beginning 0)(match-end 0))))
+ ;; convey 'allout-was-hidden annotation, if original had it:
+ (if has-annotation
+ (put-text-property 0 (length new-prefix) 'allout-was-hidden t
+ new-prefix))
+
; Put in new prefix:
- (outline-unprotected (insert-string new-prefix))
+ (allout-unprotected (insert new-prefix))
- ;; Reindent the body if elected and margin changed:
- (if (and outline-reindent-bodies
- (not (= new-depth current-depth)))
- (outline-reindent-body current-depth new-depth))
+ ;; Reindent the body if elected, margin changed, and not encrypted body:
+ (if (and allout-reindent-bodies
+ (not (= new-depth current-depth))
+ (not (allout-encrypted-topic-p)))
+ (allout-reindent-body current-depth new-depth))
;; Recursively rectify successive siblings of orig topic if
;; caller elected for it:
(if do-successors
(save-excursion
- (while (outline-next-sibling new-depth nil)
+ (while (allout-next-sibling new-depth nil)
(setq index
(cond ((numberp index) (1+ index))
- ((not number-control) (outline-sibling-index))))
- (if (outline-numbered-type-prefix)
- (outline-rebullet-heading nil ;;; solicit
+ ((not number-control) (allout-sibling-index))))
+ (if (allout-numbered-type-prefix)
+ (allout-rebullet-heading nil ;;; solicit
new-depth ;;; new-depth
number-control;;; number-control
index ;;; index
nil))))) ;;;(dont!)do-successors
) ; (if (and (= current-depth new-depth)...))
- ) ; let* ((current-depth (outline-depth))...)
+ ) ; let* ((current-depth (allout-depth))...)
) ; defun
-;;;_ > outline-rebullet-topic (arg)
-(defun outline-rebullet-topic (arg)
- "Like outline-rebullet-topic-grunt, but start from topic visible at point.
+;;;_ > allout-rebullet-topic (arg)
+(defun allout-rebullet-topic (arg &optional sans-offspring)
+ "Rebullet the visible topic containing point and all contained subtopics.
Descends into invisible as well as visible topics, however.
+When optional sans-offspring is non-nil, subtopics are not
+shifted. \(Shifting a topic outwards without shifting its
+offspring is disallowed, since this would create a \"containment
+discontinuity\", where the depth difference between a topic and
+its immediate offspring is greater than one.)
+
With repeat count, shift topic depth by that amount."
(interactive "P")
- (let ((start-col (current-column))
- (was-eol (eolp)))
+ (let ((start-col (current-column)))
(save-excursion
;; Normalize arg:
(cond ((null arg) (setq arg 0))
((listp arg) (setq arg (car arg))))
;; Fill the user in, in case we're shifting a big topic:
(if (not (zerop arg)) (message "Shifting..."))
- (outline-back-to-current-heading)
- (if (<= (+ (outline-recent-depth) arg) 0)
+ (allout-back-to-current-heading)
+ (if (<= (+ allout-recent-depth arg) 0)
(error "Attempt to shift topic below level 1"))
- (outline-rebullet-topic-grunt arg)
+ (allout-rebullet-topic-grunt arg nil nil nil nil sans-offspring)
(if (not (zerop arg)) (message "Shifting... done.")))
(move-to-column (max 0 (+ start-col arg)))))
-;;;_ > outline-rebullet-topic-grunt (&optional relative-depth ...)
-(defun outline-rebullet-topic-grunt (&optional relative-depth
+;;;_ > allout-rebullet-topic-grunt (&optional relative-depth ...)
+(defun allout-rebullet-topic-grunt (&optional relative-depth
starting-depth
starting-point
index
- do-successors)
+ do-successors
+ sans-offspring)
+ "Like `allout-rebullet-topic', but on nearest containing topic
+\(visible or not).
- "Rebullet the topic at point, visible or invisible, and all
-contained subtopics. See outline-rebullet-heading for rebulleting
-behavior.
+See `allout-rebullet-heading' for rebulleting behavior.
All arguments are optional.
First arg RELATIVE-DEPTH means to shift the depth of the entire
topic that amount.
-The rest of the args are for internal recursive use by the function
-itself. The are STARTING-DEPTH, STARTING-POINT, and INDEX."
+Several subsequent args are for internal recursive use by the function
+itself: STARTING-DEPTH, STARTING-POINT, and INDEX.
+
+Finally, if optional SANS-OFFSPRING is non-nil then the offspring
+are not shifted. \(Shifting a topic outwards without shifting
+its offspring is disallowed, since this would create a
+\"containment discontinuity\", where the depth difference between
+a topic and its immediate offspring is greater than one..)"
+
+ ;; XXX the recursion here is peculiar, and in general the routine may
+ ;; need simplification with refactoring.
+
+ (if (and sans-offspring
+ relative-depth
+ (< relative-depth 0))
+ (error (concat "Attempt to shift topic outwards without offspring,"
+ " would cause containment discontinuity.")))
(let* ((relative-depth (or relative-depth 0))
- (new-depth (outline-depth))
+ (new-depth (allout-depth))
(starting-depth (or starting-depth new-depth))
(on-starting-call (null starting-point))
(index (or index
;; calculates it at what might be new depth:
(and (or (zerop relative-depth)
(not on-starting-call))
- (outline-sibling-index))))
+ (allout-sibling-index))))
+ (starting-index index)
(moving-outwards (< 0 relative-depth))
- (starting-point (or starting-point (point))))
+ (starting-point (or starting-point (point)))
+ (local-point (point)))
;; Sanity check for excessive promotion done only on starting call:
(and on-starting-call
moving-outwards
(> 0 (+ starting-depth relative-depth))
- (error "Attempt to shift topic out beyond level 1.")) ;;; ====>
+ (error "Attempt to shift topic out beyond level 1"))
(cond ((= starting-depth new-depth)
- ;; We're at depth to work on this one:
- (outline-rebullet-heading nil ;;; solicit
- (+ starting-depth ;;; starting-depth
- relative-depth)
- nil ;;; number
- index ;;; index
- ;; Every contained topic will get hit,
- ;; and we have to get to outside ones
- ;; deliberately:
- nil) ;;; do-successors
- ;; ... and work on subsequent ones which are at greater depth:
- (setq index 0)
- (outline-next-heading)
- (while (and (not (eobp))
- (< starting-depth (outline-recent-depth)))
- (setq index (1+ index))
- (outline-rebullet-topic-grunt relative-depth ;;; relative-depth
- (1+ starting-depth);;;starting-depth
- starting-point ;;; starting-point
- index))) ;;; index
+ ;; We're at depth to work on this one.
+
+ ;; When shifting out we work on the children before working on
+ ;; the parent to avoid interim `allout-aberrant-container-p'
+ ;; aberrancy, and vice-versa when shifting in:
+ (if (>= relative-depth 0)
+ (allout-rebullet-heading nil
+ (+ starting-depth relative-depth)
+ nil ;;; number
+ index
+ nil)) ;;; do-successors
+ (when (not sans-offspring)
+ ;; ... and work on subsequent ones which are at greater depth:
+ (setq index 0)
+ (allout-next-heading)
+ (while (and (not (eobp))
+ (< starting-depth (allout-depth)))
+ (setq index (1+ index))
+ (allout-rebullet-topic-grunt relative-depth
+ (1+ starting-depth)
+ starting-point
+ index)))
+ (when (< relative-depth 0)
+ (save-excursion
+ (goto-char local-point)
+ (allout-rebullet-heading nil ;;; solicit
+ (+ starting-depth relative-depth)
+ nil ;;; number
+ starting-index
+ nil)))) ;;; do-successors
((< starting-depth new-depth)
;; Rare case - subtopic more than one level deeper than parent.
;; Treat this one at an even deeper level:
- (outline-rebullet-topic-grunt relative-depth ;;; relative-depth
- new-depth ;;; starting-depth
- starting-point ;;; starting-point
- index))) ;;; index
+ (allout-rebullet-topic-grunt relative-depth
+ new-depth
+ starting-point
+ index
+ sans-offspring)))
(if on-starting-call
(progn
;; if topic has changed depth
(if (or do-successors
(and (not (zerop relative-depth))
- (or (= (outline-recent-depth) starting-depth)
- (= (outline-recent-depth) (+ starting-depth
+ (or (= allout-recent-depth starting-depth)
+ (= allout-recent-depth (+ starting-depth
relative-depth)))))
- (outline-rebullet-heading nil nil nil nil t))
+ (allout-rebullet-heading nil nil nil nil t))
;; Now rectify numbering of new siblings of the adjusted topic,
;; if depth has been changed:
(progn (goto-char starting-point)
(if (not (zerop relative-depth))
- (outline-rebullet-heading nil nil nil nil t)))))
+ (allout-rebullet-heading nil nil nil nil t)))))
)
)
-;;;_ > outline-renumber-to-depth (&optional depth)
-(defun outline-renumber-to-depth (&optional depth)
+;;;_ > allout-renumber-to-depth (&optional depth)
+(defun allout-renumber-to-depth (&optional depth)
"Renumber siblings at current depth.
Affects superior topics if optional arg DEPTH is less than current depth.
;; Proceed by level, processing subsequent siblings on each,
;; ascending until we get shallower than the start depth:
- (let ((ascender (outline-depth)))
+ (let ((ascender (allout-depth))
+ was-eobp)
(while (and (not (eobp))
- (outline-depth)
- (>= (outline-recent-depth) depth)
+ (allout-depth)
+ (>= allout-recent-depth depth)
(>= ascender depth))
; Skip over all topics at
; lesser depths, which can not
; have been disturbed:
- (while (and (not (eobp))
- (> (outline-recent-depth) ascender))
- (outline-next-heading))
+ (while (and (not (setq was-eobp (eobp)))
+ (> allout-recent-depth ascender))
+ (allout-next-heading))
; Prime ascender for ascension:
- (setq ascender (1- (outline-recent-depth)))
- (if (>= (outline-recent-depth) depth)
- (outline-rebullet-heading nil ;;; solicit
+ (setq ascender (1- allout-recent-depth))
+ (if (>= allout-recent-depth depth)
+ (allout-rebullet-heading nil ;;; solicit
nil ;;; depth
nil ;;; number-control
nil ;;; index
- t))));;; do-successors
- (outline-recent-depth))
-;;;_ > outline-number-siblings (&optional denumber)
-(defun outline-number-siblings (&optional denumber)
+ t)) ;;; do-successors
+ (if was-eobp (goto-char (point-max)))))
+ allout-recent-depth)
+;;;_ > allout-number-siblings (&optional denumber)
+(defun allout-number-siblings (&optional denumber)
"Assign numbered topic prefix to this topic and its siblings.
With universal argument, denumber - assign default bullet to this
(interactive "P")
(save-excursion
- (outline-back-to-current-heading)
- (outline-beginning-of-level)
- (let ((depth (outline-recent-depth))
+ (allout-back-to-current-heading)
+ (allout-beginning-of-level)
+ (let ((depth allout-recent-depth)
(index (if (not denumber) 1))
(use-bullet (equal '(16) denumber))
(more t))
(while more
- (outline-rebullet-heading use-bullet ;;; solicit
+ (allout-rebullet-heading use-bullet ;;; solicit
depth ;;; depth
t ;;; number-control
index ;;; index
nil) ;;; do-successors
(if index (setq index (1+ index)))
- (setq more (outline-next-sibling depth nil))))))
-;;;_ > outline-shift-in (arg)
-(defun outline-shift-in (arg)
- "Increase depth of current heading and any topics collapsed within it."
+ (setq more (allout-next-sibling depth nil))))))
+;;;_ > allout-shift-in (arg)
+(defun allout-shift-in (arg)
+ "Increase depth of current heading and any items collapsed within it.
+
+With a negative argument, the item is shifted out using
+`allout-shift-out', instead.
+
+With an argument greater than one, shift-in the item but not its
+offspring, making the item into a sibling of its former children,
+and a child of sibling that formerly preceeded it.
+
+You are not allowed to shift the first offspring of a topic
+inwards, because that would yield a \"containment
+discontinuity\", where the depth difference between a topic and
+its immediate offspring is greater than one. The first topic in
+the file can be adjusted to any positive depth, however."
+
(interactive "p")
- (outline-rebullet-topic arg))
-;;;_ > outline-shift-out (arg)
-(defun outline-shift-out (arg)
- "Decrease depth of current heading and any topics collapsed within it."
+ (if (< arg 0)
+ (allout-shift-out (* arg -1))
+ ;; refuse to create a containment discontinuity:
+ (save-excursion
+ (allout-back-to-current-heading)
+ (if (not (bobp))
+ (let* ((current-depth allout-recent-depth)
+ (start-point (point))
+ (predecessor-depth (progn
+ (forward-char -1)
+ (allout-goto-prefix-doublechecked)
+ (if (< (point) start-point)
+ allout-recent-depth
+ 0))))
+ (if (and (> predecessor-depth 0)
+ (> (1+ current-depth)
+ (1+ predecessor-depth)))
+ (error (concat "Disallowed shift deeper than"
+ " containing topic's children."))))))
+ (let ((where (point)))
+ (allout-rebullet-topic 1 (and (> arg 1) 'sans-offspring))
+ (run-hook-with-args 'allout-structure-shifted-hook arg where))))
+;;;_ > allout-shift-out (arg)
+(defun allout-shift-out (arg)
+ "Decrease depth of current heading and any topics collapsed within it.
+This will make the item a sibling of its former container.
+
+With a negative argument, the item is shifted in using
+`allout-shift-in', instead.
+
+With an argument greater than one, shift-out the item's offspring
+but not the item itself, making the former children siblings of
+the item.
+
+With an argument greater than 1, the item's offspring are shifted
+out without shifting the item. This will make the immediate
+subtopics into siblings of the item."
(interactive "p")
- (outline-rebullet-topic (* arg -1)))
+ (if (< arg 0)
+ (allout-shift-in (* arg -1))
+ ;; Get proper exposure in this area:
+ (save-excursion (if (allout-ascend)
+ (allout-show-children)))
+ ;; Show collapsed children if there's a successor which will become
+ ;; their sibling:
+ (if (and (allout-current-topic-collapsed-p)
+ (save-excursion (allout-next-sibling)))
+ (allout-show-children))
+ (let ((where (and (allout-depth) allout-recent-prefix-beginning)))
+ (save-excursion
+ (if (> arg 1)
+ ;; Shift the offspring but not the topic:
+ (let ((children-chart (allout-chart-subtree 1)))
+ (if (listp (car children-chart))
+ ;; whoops:
+ (setq children-chart (allout-flatten children-chart)))
+ (save-excursion
+ (dolist (child-point children-chart)
+ (goto-char child-point)
+ (allout-shift-out 1))))
+ (allout-rebullet-topic (* arg -1))))
+ (run-hook-with-args 'allout-structure-shifted-hook (* arg -1) where))))
;;;_ : Surgery (kill-ring) functions with special provisions for outlines:
-;;;_ > outline-kill-line (&optional arg)
-(defun outline-kill-line (&optional arg)
+;;;_ > allout-kill-line (&optional arg)
+(defun allout-kill-line (&optional arg)
"Kill line, adjusting subsequent lines suitably for outline mode."
(interactive "*P")
- (if (not (and (outline-mode-p) ; active outline mode,
- outline-numbered-bullet ; numbers may need adjustment,
- (bolp) ; may be clipping topic head,
- (looking-at outline-regexp))) ; are clipping topic head.
- ;; Above conditions do not obtain - just do a regular kill:
+
+ (if (or (not (allout-mode-p))
+ (not (bolp))
+ (not (looking-at allout-regexp)))
+ ;; Just do a regular kill:
(kill-line arg)
;; Ah, have to watch out for adjustments:
- (let* ((depth (outline-depth)))
- ; Do the kill:
- (kill-line arg)
- ; Provide some feedback:
- (sit-for 0)
- (save-excursion
- ; Start with the topic
- ; following killed line:
- (if (not (looking-at outline-regexp))
- (outline-next-heading))
- (outline-renumber-to-depth depth)))))
-;;;_ > outline-kill-topic ()
-(defun outline-kill-topic ()
+ (let* ((beg (point))
+ end
+ (beg-hidden (allout-hidden-p))
+ (end-hidden (save-excursion (allout-end-of-current-line)
+ (setq end (point))
+ (allout-hidden-p)))
+ (depth (allout-depth)))
+
+ (allout-annotate-hidden beg end)
+ (if (and (not beg-hidden) (not end-hidden))
+ (allout-unprotected (kill-line arg))
+ (kill-line arg))
+ (allout-deannotate-hidden beg end)
+
+ (if allout-numbered-bullet
+ (save-excursion ; Renumber subsequent topics if needed:
+ (if (not (looking-at allout-regexp))
+ (allout-next-heading))
+ (allout-renumber-to-depth depth)))
+ (run-hook-with-args 'allout-structure-deleted-hook depth (point)))))
+;;;_ > allout-copy-line-as-kill ()
+(defun allout-copy-line-as-kill ()
+ "Like allout-kill-topic, but save to kill ring instead of deleting."
+ (interactive)
+ (let ((buffer-read-only t))
+ (condition-case nil
+ (allout-kill-line)
+ (buffer-read-only nil))))
+;;;_ > allout-kill-topic ()
+(defun allout-kill-topic ()
"Kill topic together with subtopics.
-Leaves primary topic's trailing vertical whitespace, if any."
+Trailing whitespace is killed with a topic if that whitespace:
+
+ - would separate the topic from a subsequent sibling
+ - would separate the topic from the end of buffer
+ - would not be added to whitespace already separating the topic from the
+ previous one.
- ;; Some finagling is done to make complex topic kills appear faster
- ;; than they actually are. A redisplay is performed immediately
- ;; after the region is disposed of, though the renumbering process
- ;; has yet to be performed. This means that there may appear to be
- ;; a lag *after* the kill has been performed.
+Topic exposure is marked with text-properties, to be used by
+allout-yank-processing for exposure recovery."
(interactive)
- (let* ((beg (prog1 (outline-back-to-current-heading)(beginning-of-line)))
- (depth (outline-recent-depth)))
- (outline-end-of-current-subtree)
+ (let* ((inhibit-field-text-motion t)
+ (beg (prog1 (allout-back-to-current-heading) (beginning-of-line)))
+ end
+ (depth allout-recent-depth))
+ (allout-end-of-current-subtree)
+ (if (and (/= (current-column) 0) (not (eobp)))
+ (forward-char 1))
(if (not (eobp))
- (if (or (not (looking-at "^$"))
- ;; A blank line - cut it with this topic *unless* this
- ;; is the last topic at this level, in which case
- ;; we'll leave the blank line as part of the
- ;; containing topic:
- (save-excursion
- (and (outline-next-heading)
- (>= (outline-recent-depth) depth))))
+ (if (and (looking-at "\n")
+ (or (save-excursion
+ (or (not (allout-next-heading))
+ (= depth allout-recent-depth)))
+ (and (> (- beg (point-min)) 3)
+ (string= (buffer-substring (- beg 2) beg) "\n\n"))))
(forward-char 1)))
-
- (kill-region beg (point))
- (sit-for 0)
- (save-excursion
- (outline-renumber-to-depth depth))))
-;;;_ > outline-yank-processing ()
-(defun outline-yank-processing (&optional arg)
- "Incidental outline-specific business to be done just after text yanks.
+ (allout-annotate-hidden beg (setq end (point)))
+ (unwind-protect
+ (allout-unprotected (kill-region beg end))
+ (if buffer-read-only
+ ;; eg, during copy-as-kill.
+ (allout-deannotate-hidden beg end)))
+
+ (save-excursion
+ (allout-renumber-to-depth depth))
+ (run-hook-with-args 'allout-structure-deleted-hook depth (point))))
+;;;_ > allout-copy-topic-as-kill ()
+(defun allout-copy-topic-as-kill ()
+ "Like allout-kill-topic, but save to kill ring instead of deleting."
+ (interactive)
+ (let ((buffer-read-only t))
+ (condition-case nil
+ (allout-kill-topic)
+ (buffer-read-only (message "Topic copied...")))))
+;;;_ > allout-annotate-hidden (begin end)
+(defun allout-annotate-hidden (begin end)
+ "Qualify text with properties to indicate exposure status."
+
+ (let ((was-modified (buffer-modified-p))
+ (buffer-read-only nil))
+ (allout-deannotate-hidden begin end)
+ (save-excursion
+ (goto-char begin)
+ (let (done next prev overlay)
+ (while (not done)
+ ;; at or advance to start of next hidden region:
+ (if (not (allout-hidden-p))
+ (setq next
+ (max (1+ (point))
+ (next-single-char-property-change (point)
+ 'invisible
+ nil end))))
+ (if (or (not next) (eq prev next))
+ ;; still not at start of hidden area - must not be any left.
+ (setq done t)
+ (goto-char next)
+ (setq prev next)
+ (if (not (allout-hidden-p))
+ ;; still not at start of hidden area.
+ (setq done t)
+ (setq overlay (allout-get-invisibility-overlay))
+ (setq next (overlay-end overlay)
+ prev next)
+ ;; advance to end of this hidden area:
+ (when next
+ (goto-char next)
+ (allout-unprotected
+ (let ((buffer-undo-list t))
+ (put-text-property (overlay-start overlay) next
+ 'allout-was-hidden t)))))))))
+ (set-buffer-modified-p was-modified)))
+;;;_ > allout-deannotate-hidden (begin end)
+(defun allout-deannotate-hidden (begin end)
+ "Remove allout hidden-text annotation between BEGIN and END."
+
+ (allout-unprotected
+ (let ((inhibit-read-only t)
+ (buffer-undo-list t))
+ ;(remove-text-properties begin end '(allout-was-hidden t))
+ )))
+;;;_ > allout-hide-by-annotation (begin end)
+(defun allout-hide-by-annotation (begin end)
+ "Translate text properties indicating exposure status into actual exposure."
+ (save-excursion
+ (goto-char begin)
+ (let ((was-modified (buffer-modified-p))
+ done next prev)
+ (while (not done)
+ ;; at or advance to start of next annotation:
+ (if (not (get-text-property (point) 'allout-was-hidden))
+ (setq next (next-single-char-property-change (point)
+ 'allout-was-hidden
+ nil end)))
+ (if (or (not next) (eq prev next))
+ ;; no more or not advancing - must not be any left.
+ (setq done t)
+ (goto-char next)
+ (setq prev next)
+ (if (not (get-text-property (point) 'allout-was-hidden))
+ ;; still not at start of annotation.
+ (setq done t)
+ ;; advance to just after end of this annotation:
+ (setq next (next-single-char-property-change (point)
+ 'allout-was-hidden
+ nil end))
+ (overlay-put (make-overlay prev next)
+ 'category 'allout-exposure-category)
+ (allout-deannotate-hidden prev next)
+ (setq prev next)
+ (if next (goto-char next)))))
+ (set-buffer-modified-p was-modified))))
+;;;_ > allout-yank-processing ()
+(defun allout-yank-processing (&optional arg)
+
+ "Incidental allout-specific business to be done just after text yanks.
Does depth adjustment of yanked topics, when:
2 it is being yanked at the end of a line which consists of only a valid
topic prefix.
-Also, adjusts numbering of subsequent siblings when appropropriate.
+Also, adjusts numbering of subsequent siblings when appropriate.
Depth adjustment alters the depth of all the topics being yanked
the amount it takes to make the first topic have the depth of the
The point is left in front of yanked, adjusted topics, rather than
at the end (and vice-versa with the mark). Non-adjusted yanks,
-however, are left exactly like normal, non-outline-specific yanks."
+however, are left exactly like normal, non-allout-specific yanks."
(interactive "*P")
; Get to beginning, leaving
; region around subject:
- (if (< (mark-marker) (point))
+ (if (< (allout-mark-marker t) (point))
(exchange-point-and-mark))
- (let* ((subj-beg (point))
- (subj-end (mark-marker))
- ;; 'resituate' if yanking an entire topic into topic header:
- (resituate (and (outline-e-o-prefix-p)
- (looking-at (concat "\\(" outline-regexp "\\)"))
- (outline-prefix-data (match-beginning 1)
- (match-end 1))))
- ;; 'rectify-numbering' if resituating (where several topics may
- ;; be resituating) or yanking a topic into a topic slot (bol):
- (rectify-numbering (or resituate
- (and (bolp) (looking-at outline-regexp)))))
+ (let* ( ;; inhibit aberrance doublecheck while reconciling disparate pastes:
+ (allout-during-yank-processing t)
+ (subj-beg (point))
+ (into-bol (bolp))
+ (subj-end (allout-mark-marker t))
+ ;; 'resituate' if yanking an entire topic into topic header:
+ (resituate (and (allout-e-o-prefix-p)
+ (looking-at allout-regexp)
+ (allout-prefix-data)))
+ ;; `rectify-numbering' if resituating (where several topics may
+ ;; be resituating) or yanking a topic into a topic slot (bol):
+ (rectify-numbering (or resituate
+ (and into-bol (looking-at allout-regexp)))))
(if resituate
; The yanked stuff is a topic:
- (let* ((prefix-len (- (match-end 1) subj-beg))
- (subj-depth (outline-recent-depth))
- (prefix-bullet (outline-recent-bullet))
- (adjust-to-depth
- ;; Nil if adjustment unnecessary, otherwise depth to which
- ;; adjustment should be made:
- (save-excursion
- (and (goto-char subj-end)
- (eolp)
- (goto-char subj-beg)
- (and (looking-at outline-regexp)
- (progn
- (beginning-of-line)
- (not (= (point) subj-beg)))
- (looking-at outline-regexp)
- (outline-prefix-data (match-beginning 0)
- (match-end 0)))
- (outline-recent-depth))))
- done
- (more t))
- (setq rectify-numbering outline-numbered-bullet)
- (if adjust-to-depth
+ (let* ((inhibit-field-text-motion t)
+ (prefix-len (if (not (match-end 1))
+ 1
+ (- (match-end 1) subj-beg)))
+ (subj-depth allout-recent-depth)
+ (prefix-bullet (allout-recent-bullet))
+ (adjust-to-depth
+ ;; Nil if adjustment unnecessary, otherwise depth to which
+ ;; adjustment should be made:
+ (save-excursion
+ (and (goto-char subj-end)
+ (eolp)
+ (goto-char subj-beg)
+ (and (looking-at allout-regexp)
+ (progn
+ (beginning-of-line)
+ (not (= (point) subj-beg)))
+ (looking-at allout-regexp)
+ (allout-prefix-data))
+ allout-recent-depth)))
+ (more t))
+ (setq rectify-numbering allout-numbered-bullet)
+ (if adjust-to-depth
; Do the adjustment:
- (progn
- (message "... yanking") (sit-for 0)
- (save-restriction
- (narrow-to-region subj-beg subj-end)
+ (progn
+ (save-restriction
+ (narrow-to-region subj-beg subj-end)
; Trim off excessive blank
; line at end, if any:
- (goto-char (point-max))
- (if (looking-at "^$")
- (outline-unprotected (delete-char -1)))
+ (goto-char (point-max))
+ (if (looking-at "^$")
+ (allout-unprotected (delete-char -1)))
; Work backwards, with each
; shallowest level,
; successively excluding the
; last processed topic from
; the narrow region:
- (while more
- (outline-back-to-current-heading)
+ (while more
+ (allout-back-to-current-heading)
; go as high as we can in each bunch:
- (while (outline-ascend-to-depth (1- (outline-depth))))
- (save-excursion
- (outline-rebullet-topic-grunt (- adjust-to-depth
- subj-depth))
- (outline-depth))
- (if (setq more (not (bobp)))
- (progn (widen)
- (forward-char -1)
- (narrow-to-region subj-beg (point))))))
- (message "")
- ;; Preserve new bullet if it's a distinctive one, otherwise
- ;; use old one:
- (if (string-match (regexp-quote prefix-bullet)
- outline-distinctive-bullets-string)
+ (while (allout-ascend))
+ (save-excursion
+ (allout-unprotected
+ (allout-rebullet-topic-grunt (- adjust-to-depth
+ subj-depth)))
+ (allout-depth))
+ (if (setq more (not (bobp)))
+ (progn (widen)
+ (forward-char -1)
+ (narrow-to-region subj-beg (point))))))
+ ;; Preserve new bullet if it's a distinctive one, otherwise
+ ;; use old one:
+ (if (string-match (regexp-quote prefix-bullet)
+ allout-distinctive-bullets-string)
; Delete from bullet of old to
; before bullet of new:
- (progn
- (beginning-of-line)
- (delete-region (point) subj-beg)
- (set-marker (mark-marker) subj-end)
- (goto-char subj-beg)
- (outline-end-of-prefix))
+ (progn
+ (beginning-of-line)
+ (allout-unprotected
+ (delete-region (point) subj-beg))
+ (set-marker (allout-mark-marker t) subj-end)
+ (goto-char subj-beg)
+ (allout-end-of-prefix))
; Delete base subj prefix,
; leaving old one:
- (delete-region (point) (+ (point)
- prefix-len
- (- adjust-to-depth subj-depth)))
+ (allout-unprotected
+ (progn
+ (delete-region (point) (+ (point)
+ prefix-len
+ (- adjust-to-depth subj-depth)))
; and delete residual subj
; prefix digits and space:
- (while (looking-at "[0-9]") (delete-char 1))
- (if (looking-at " ") (delete-char 1))))
- (exchange-point-and-mark))))
+ (while (looking-at "[0-9]") (delete-char 1))
+ (if (looking-at " ") (delete-char 1))))))
+ (exchange-point-and-mark))))
(if rectify-numbering
- (progn
- (save-excursion
+ (progn
+ (save-excursion
; Give some preliminary feedback:
- (message "... reconciling numbers") (sit-for 0)
+ (message "... reconciling numbers")
; ... and renumber, in case necessary:
- (goto-char subj-beg)
- (if (outline-goto-prefix)
- (outline-rebullet-heading nil ;;; solicit
- (outline-depth) ;;; depth
- nil ;;; number-control
- nil ;;; index
- t))
- (message ""))))
+ (goto-char subj-beg)
+ (if (allout-goto-prefix-doublechecked)
+ (allout-unprotected
+ (allout-rebullet-heading nil ;;; solicit
+ (allout-depth) ;;; depth
+ nil ;;; number-control
+ nil ;;; index
+ t)))
+ (message ""))))
+ (if (or into-bol resituate)
+ (allout-hide-by-annotation (point) (allout-mark-marker t))
+ (allout-deannotate-hidden (allout-mark-marker t) (point)))
(if (not resituate)
- (exchange-point-and-mark))))
-;;;_ > outline-yank (&optional arg)
-(defun outline-yank (&optional arg)
- "Outline-mode yank, with depth and numbering adjustment of yanked topics.
+ (exchange-point-and-mark))
+ (run-hook-with-args 'allout-structure-added-hook subj-beg subj-end)))
+;;;_ > allout-yank (&optional arg)
+(defun allout-yank (&optional arg)
+ "`allout-mode' yank, with depth and numbering adjustment of yanked topics.
-Non-topic yanks work no differntly than normal yanks.
+Non-topic yanks work no differently than normal yanks.
If a topic is being yanked into a bare topic prefix, the depth of the
yanked topic is adjusted to the depth of the topic prefix.
- 1 we're yanking in an outline-mode buffer
+ 1 we're yanking in an `allout-mode' buffer
2 the stuff being yanked starts with a valid outline header prefix, and
3 it is being yanked at the end of a line which consists of only a valid
topic prefix.
however, (ones that don't qualify for adjustment) are handled
exactly like normal yanks.
-Numbering of yanked topics, and the succesive siblings at the depth
+Numbering of yanked topics, and the successive siblings at the depth
into which they're being yanked, is adjusted.
-Outline-yank-pop works with outline-yank just like normal yank-pop
-works with normal yank in non-outline buffers."
+`allout-yank-pop' works with `allout-yank' just like normal `yank-pop'
+works with normal `yank' in non-outline buffers."
(interactive "*P")
(setq this-command 'yank)
- (yank arg)
- (if (outline-mode-p)
- (outline-yank-processing)))
-;;;_ > outline-yank-pop (&optional arg)
-(defun outline-yank-pop (&optional arg)
- "Yank-pop like outline-yank when popping to bare outline prefixes.
+ (allout-unprotected
+ (yank arg))
+ (if (allout-mode-p)
+ (allout-yank-processing)))
+;;;_ > allout-yank-pop (&optional arg)
+(defun allout-yank-pop (&optional arg)
+ "Yank-pop like `allout-yank' when popping to bare outline prefixes.
Adapts level of popped topics to level of fresh prefix.
(interactive "*p")
(setq this-command 'yank)
(yank-pop arg)
- (if (outline-mode-p)
- (outline-yank-processing)))
+ (if (allout-mode-p)
+ (allout-yank-processing)))
;;;_ - Specialty bullet functions
;;;_ : File Cross references
-;;;_ > outline-resolve-xref ()
-(defun outline-resolve-xref ()
+;;;_ > allout-resolve-xref ()
+(defun allout-resolve-xref ()
"Pop to file associated with current heading, if it has an xref bullet.
-\(Works according to setting of `outline-file-xref-bullet')."
+\(Works according to setting of `allout-file-xref-bullet')."
(interactive)
- (if (not outline-file-xref-bullet)
+ (if (not allout-file-xref-bullet)
(error
- "outline cross references disabled - no 'outline-file-xref-bullet'")
- (if (not (string= (outline-current-bullet) outline-file-xref-bullet))
- (error "current heading lacks cross-reference bullet '%s'"
- outline-file-xref-bullet)
- (let (file-name)
+ "Outline cross references disabled - no `allout-file-xref-bullet'")
+ (if (not (string= (allout-current-bullet) allout-file-xref-bullet))
+ (error "Current heading lacks cross-reference bullet `%s'"
+ allout-file-xref-bullet)
+ (let ((inhibit-field-text-motion t)
+ file-name)
(save-excursion
- (let* ((text-start outline-recent-prefix-end)
- (heading-end (progn (outline-pre-next-preface)
- (point))))
+ (let* ((text-start allout-recent-prefix-end)
+ (heading-end (progn (end-of-line) (point))))
(goto-char text-start)
(setq file-name
(if (re-search-forward "\\s-\\(\\S-*\\)" heading-end t)
(buffer-substring (match-beginning 1) (match-end 1))))))
- (setq file-name
- (if (not (= (aref file-name 0) ?:))
- (expand-file-name file-name)
- ; A registry-files ref, strip the ':'
- ; and try to follow it:
- (let ((reg-ref (reference-registered-file
- (substring file-name 1) nil t)))
- (if reg-ref (car (cdr reg-ref))))))
+ (setq file-name (expand-file-name file-name))
(if (or (file-exists-p file-name)
(if (file-writable-p file-name)
(y-or-n-p (format "%s not there, create one? "
)
)
-;;;_ #6 Exposure Control and Processing
+;;;_ #6 Exposure Control
;;;_ - Fundamental
-;;;_ > outline-flag-region (from to flag)
-(defmacro outline-flag-region (from to flag)
- "Hide or show lines from FROM to TO, via emacs selective-display FLAG char.
-Ie, text following flag C-m \(carriage-return) is hidden until the
-next C-j (newline) char.
-
-Returns the endpoint of the region."
- (` (let ((buffer-read-only nil)
- (outline-override-protect t))
- (subst-char-in-region (, from) (, to)
- (if (= (, flag) ?\n) ?\r ?\n)
- (, flag) t))))
-;;;_ > outline-flag-current-subtree (flag)
-(defun outline-flag-current-subtree (flag)
- "Hide or show subtree of currently-visible topic.
-
-See `outline-flag-region' for more details."
-
- (save-excursion
- (outline-back-to-current-heading)
- (outline-flag-region (point)
- (progn (outline-end-of-current-subtree) (1- (point)))
- flag)))
-
-;;;_ - Mapping and processing of topics
-;;;_ " See also chart functions, in navigation
-;;;_ > outline-listify-exposed (&optional start end)
-(defun outline-listify-exposed (&optional start end)
-
- "Produce a list representing exposed topics in current region.
+;;;_ > allout-flag-region (from to flag)
+(defun allout-flag-region (from to flag)
+ "Conceal text between FROM and TO if FLAG is non-nil, else reveal it.
+
+Exposure-change hook `allout-exposure-change-hook' is run with the same
+arguments as this function, after the exposure changes are made. \(The old
+`allout-view-change-hook' is being deprecated, and eventually will not be
+invoked.\)"
+
+ ;; We use outline invisibility spec.
+ (remove-overlays from to 'category 'allout-exposure-category)
+ (when flag
+ (let ((o (make-overlay from to)))
+ (overlay-put o 'category 'allout-exposure-category)
+ (when (featurep 'xemacs)
+ (let ((props (symbol-plist 'allout-exposure-category)))
+ (while props
+ (overlay-put o (pop props) (pop props)))))))
+ (run-hooks 'allout-view-change-hook)
+ (run-hook-with-args 'allout-exposure-change-hook from to flag))
+;;;_ > allout-flag-current-subtree (flag)
+(defun allout-flag-current-subtree (flag)
+ "Conceal currently-visible topic's subtree if FLAG non-nil, else reveal it."
-This list can then be used by 'outline-process-exposed' to manipulate
-the subject region.
-
-List is composed of elements that may themselves be lists representing
-exposed components in subtopic.
-
-Each component list contains:
- - a number representing the depth of the topic,
- - a string representing the header-prefix (ref. 'outline-header-prefix'),
- - a string representing the bullet character,
- - and a series of strings, each containing one line of the exposed
- portion of the topic entry."
-
- (interactive "r")
(save-excursion
- (let* (strings pad result depth bullet beg next done) ; State vars.
- (goto-char start)
- (beginning-of-line)
- (if (not (outline-goto-prefix)) ; Get initial position within a topic:
- (outline-next-visible-heading 1))
- (while (and (not done)
- (not (eobp)) ; Loop until we've covered the region.
- (not (> (point) end)))
- (setq depth (outline-recent-depth) ; Current topics' depth,
- bullet (outline-recent-bullet) ; ... bullet,
- beg (progn (outline-end-of-prefix t) (point))) ; and beginning.
- (setq done ; The boundary for the current topic:
- (not (outline-next-visible-heading 1)))
- (beginning-of-line)
- (setq next (point))
- (goto-char beg)
- (setq strings nil)
- (while (> next (point)) ; Get all the exposed text in
- (setq strings
- (cons (buffer-substring
- beg
- ;To hidden text or end of line:
- (progn
- (search-forward "\r"
- (save-excursion (end-of-line)
- (point))
- 1)
- (if (= (preceding-char) ?\r)
- (1- (point))
- (point))))
- strings))
- (if (< (point) next) ; Resume from after hid text, if any.
- (forward-line 1))
- (setq beg (point)))
- ;; Accumulate list for this topic:
- (setq result
- (cons (append (list depth
- outline-header-prefix
- bullet)
- (nreverse strings))
- result)))
- ;; Put the list with first at front, to last at back:
- (nreverse result))))
-;;;_ > outline-process-exposed (arg &optional tobuf)
-(defun outline-process-exposed (&optional func from to frombuf tobuf)
- "Map function on exposed parts of current topic; results to another buffer.
-
-Apply FUNCTION \(default 'outline-insert-listified) to exposed
-portions FROM position TO position \(default region, or the entire
-buffer if no region active) in buffer FROMBUF \(default current
-buffer) to buffer TOBUF \(default is buffer named like frombuf but
-with \"*\" prepended and \" exposed*\" appended).
-
-The function must as its arguments the elements of the list
-representations of topic entries produced by outline-listify-exposed."
-
- ; Resolve arguments,
- ; defaulting if necessary:
- (if (not func) (setq func 'outline-insert-listified))
- (if (not (and from to))
- (if mark-active
- (setq from (region-beginning) to (region-end))
- (setq from (point-min) to (point-max))))
- (if frombuf
- (if (not (bufferp frombuf))
- ;; Specified but not a buffer - get it:
- (let ((got (get-buffer frombuf)))
- (if (not got)
- (error (concat "outline-process-exposed: source buffer "
- frombuf
- " not found."))
- (setq frombuf got))))
- ;; not specified - default it:
- (setq frombuf (current-buffer)))
- (if tobuf
- (if (not (bufferp tobuf))
- (setq tobuf (get-buffer-create tobuf)))
- ;; not specified - default it:
- (setq tobuf (concat "*" (buffer-name frombuf) " exposed*")))
-
- (let* ((listified (progn (set-buffer frombuf)
- (outline-listify-exposed from to)))
- (prefix outline-header-prefix) ; ... as set in frombuf.
- curr)
- (set-buffer tobuf)
- (while listified
- (setq curr (car listified))
- (setq listified (cdr listified))
- (apply func (list (car curr) ; depth
- (car (cdr curr)) ; header-prefix
- (car (cdr (cdr curr))) ; bullet
- (cdr (cdr (cdr curr)))))) ; list of text lines
- (pop-to-buffer tobuf)))
+ (allout-back-to-current-heading)
+ (let ((inhibit-field-text-motion t))
+ (end-of-line))
+ (allout-flag-region (point)
+ ;; Exposing must not leave trailing blanks hidden,
+ ;; but can leave them exposed when hiding, so we
+ ;; can use flag's inverse as the
+ ;; include-trailing-blank cue:
+ (allout-end-of-current-subtree (not flag))
+ flag)))
;;;_ - Topic-specific
-;;;_ > outline-show-entry ()
-; outline-show-entry basically for isearch dynamic exposure, as is...
-(defun outline-show-entry ()
- "Like `outline-show-current-entry', reveals entries nested in hidden topics.
+;;;_ > allout-show-entry ()
+(defun allout-show-entry ()
+ "Like `allout-show-current-entry', but reveals entries in hidden topics.
This is a way to give restricted peek at a concealed locality without the
expense of exposing its context, but can leave the outline with aberrant
-exposure. outline-hide-current-entry-completely or outline-show-offshoot
-should be used after the peek to rectify the exposure."
+exposure. `allout-show-offshoot' should be used after the peek to rectify
+the exposure."
(interactive)
(save-excursion
- (outline-goto-prefix)
- (outline-flag-region (if (bobp) (point) (1- (point)))
- (or (outline-pre-next-preface) (point))
- ?\n)))
-;;;_ > outline-show-children (&optional level strict)
-(defun outline-show-children (&optional level strict)
+ (let (beg end)
+ (allout-goto-prefix-doublechecked)
+ (setq beg (if (allout-hidden-p) (1- (point)) (point)))
+ (setq end (allout-pre-next-prefix))
+ (allout-flag-region beg end nil)
+ (list beg end))))
+;;;_ > allout-show-children (&optional level strict)
+(defun allout-show-children (&optional level strict)
"If point is visible, show all direct subheadings of this heading.
-Otherwise, do outline-show-to-offshoot, and then show subheadings.
+Otherwise, do `allout-show-to-offshoot', and then show subheadings.
Optional LEVEL specifies how many levels below the current level
should be shown, or all levels if t. Default is 1.
point of non-opened subtree?)"
(interactive "p")
- (let (max-pos)
+ (let ((start-point (point)))
(if (and (not strict)
- (outline-hidden-p))
+ (allout-hidden-p))
- (progn (outline-show-to-offshoot) ; Point's concealed, open to
- ; expose it.
- ;; Then recurse, but with "strict" set so we don't
- ;; infinite regress:
- (setq max-pos (outline-show-children level t)))
+ (progn (allout-show-to-offshoot) ; Point's concealed, open to
+ ; expose it.
+ ;; Then recurse, but with "strict" set so we don't
+ ;; infinite regress:
+ (allout-show-children level t))
(save-excursion
- (save-restriction
- (let* ((start-pt (point))
- (chart (outline-chart-subtree (or level 1)))
- (to-reveal (outline-chart-to-reveal chart (or level 1))))
- (goto-char start-pt)
- (if (and strict (= (preceding-char) ?\r))
- ;; Concealed root would already have been taken care of,
- ;; unless strict was set.
- (outline-flag-region (point) (outline-snug-back) ?\n))
- (while to-reveal
- (goto-char (car to-reveal))
- (outline-flag-region (point) (outline-snug-back) ?\n)
- (setq to-reveal (cdr to-reveal)))))))))
-;;;_ x outline-show-current-children (&optional level strict)
-(defun outline-show-current-children (&optional level strict)
- "This command was misnamed, use `outline-show-children' instead.
-
-\(The \"current\" in the name is supposed to imply that it works on
-the visible topic containing point, while it really works with respect
-to the most immediate topic, concealed or not. I'll leave this old
-name around for a bit, but i'll soon activate an annoying message to
-warn people about the change, and then deprecate this alias."
-
- (interactive "p")
- ;;(beep)
- ;;(message (format "Use '%s' instead of '%s' (%s)."
- ;; "outline-show-children"
- ;; "outline-show-current-children"
- ;; (buffer-name (current-buffer))))
- (outline-show-children level strict))
-;;;_ > outline-hide-point-reconcile ()
-(defun outline-hide-reconcile ()
- "Like `outline-hide-current-entry'; hides completely if within hidden region.
-
-Specifically intended for aberrant exposure states, like entries that were
-exposed by outline-show-entry but are within otherwise concealed regions."
- (interactive)
- (save-excursion
- (outline-goto-prefix)
- (outline-flag-region (if (not (bobp)) (1- (point)) (point))
- (progn (outline-pre-next-preface)
- (if (= ?\r (following-char))
- (point)
- (1- (point))))
- ?\r)))
-;;;_ > outline-show-to-offshoot ()
-(defun outline-show-to-offshoot ()
- "Like outline-show-entry, but reveals opens all concealed ancestors, as well.
-
-As with outline-hide-current-entry-completely, useful for rectifying
-aberrant exposure states produced by outline-show-entry."
-
+ (allout-beginning-of-current-line)
+ (save-restriction
+ (let* (depth
+ ;; translate the level spec for this routine to the ones
+ ;; used by -chart-subtree and -chart-to-reveal:
+ (chart-level (cond ((not level) 1)
+ ((eq level t) nil)
+ (t level)))
+ (chart (allout-chart-subtree chart-level))
+ (to-reveal (or (allout-chart-to-reveal chart chart-level)
+ ;; interactive, show discontinuous children:
+ (and chart
+ (interactive-p)
+ (save-excursion
+ (allout-back-to-current-heading)
+ (setq depth (allout-current-depth))
+ (and (allout-next-heading)
+ (> allout-recent-depth
+ (1+ depth))))
+ (message
+ "Discontinuous offspring; use `%s %s'%s."
+ (substitute-command-keys
+ "\\[universal-argument]")
+ (substitute-command-keys
+ "\\[allout-shift-out]")
+ " to elevate them.")
+ (allout-chart-to-reveal
+ chart (- allout-recent-depth depth))))))
+ (goto-char start-point)
+ (when (and strict (allout-hidden-p))
+ ;; Concealed root would already have been taken care of,
+ ;; unless strict was set.
+ (allout-flag-region (point) (allout-snug-back) nil)
+ (when allout-show-bodies
+ (goto-char (car to-reveal))
+ (allout-show-current-entry)))
+ (while to-reveal
+ (goto-char (car to-reveal))
+ (allout-flag-region (save-excursion (allout-snug-back) (point))
+ (progn (search-forward "\n" nil t)
+ (1- (point)))
+ nil)
+ (when allout-show-bodies
+ (goto-char (car to-reveal))
+ (allout-show-current-entry))
+ (setq to-reveal (cdr to-reveal)))))))
+ ;; Compensate for `save-excursion's maintenance of point
+ ;; within invisible text:
+ (goto-char start-point)))
+;;;_ > allout-show-to-offshoot ()
+(defun allout-show-to-offshoot ()
+ "Like `allout-show-entry', but reveals all concealed ancestors, as well.
+
+Useful for coherently exposing to a random point in a hidden region."
(interactive)
(save-excursion
- (let ((orig-pt (point))
- (orig-pref (outline-goto-prefix))
+ (let ((inhibit-field-text-motion t)
+ (orig-pt (point))
+ (orig-pref (allout-goto-prefix-doublechecked))
(last-at (point))
- bag-it)
- (while (or bag-it (= (preceding-char) ?\r))
- (beginning-of-line)
+ (bag-it 0))
+ (while (or (> bag-it 1) (allout-hidden-p))
+ (while (allout-hidden-p)
+ (move-beginning-of-line 1)
+ (if (allout-hidden-p) (forward-char -1)))
(if (= last-at (setq last-at (point)))
- ;; Oops, we're not making any progress! Show the current
- ;; topic completely, and bag this try.
+ ;; Oops, we're not making any progress! Show the current topic
+ ;; completely, and try one more time here, if we haven't already.
(progn (beginning-of-line)
- (outline-show-current-subtree)
+ (allout-show-current-subtree)
(goto-char orig-pt)
- (setq bag-it t)
- (beep)
- (message "%s: %s"
- "outline-show-to-offshoot: "
- "Aberrant nesting encountered.")))
- (outline-show-children)
- (goto-char orig-pref))
+ (setq bag-it (1+ bag-it))
+ (if (> bag-it 1)
+ (error "allout-show-to-offshoot: %s"
+ "Stumped by aberrant nesting.")))
+ (if (> bag-it 0) (setq bag-it 0))
+ (allout-show-children)
+ (goto-char orig-pref)))
(goto-char orig-pt)))
- (if (outline-hidden-p)
- (outline-show-entry)))
-;;;_ > outline-hide-current-entry ()
-(defun outline-hide-current-entry ()
+ (if (allout-hidden-p)
+ (allout-show-entry)))
+;;;_ > allout-hide-current-entry ()
+(defun allout-hide-current-entry ()
"Hide the body directly following this heading."
(interactive)
- (outline-back-to-current-heading)
+ (allout-back-to-current-heading)
(save-excursion
- (outline-flag-region (point)
- (progn (outline-end-of-current-entry) (point))
- ?\^M)))
-;;;_ > outline-show-current-entry (&optional arg)
-(defun outline-show-current-entry (&optional arg)
-
- "Show body following current heading, or hide the entry if repeat count."
+ (let ((inhibit-field-text-motion t))
+ (end-of-line))
+ (allout-flag-region (point)
+ (progn (allout-end-of-entry) (point))
+ t)))
+;;;_ > allout-show-current-entry (&optional arg)
+(defun allout-show-current-entry (&optional arg)
+ "Show body following current heading, or hide entry with universal argument."
(interactive "P")
(if arg
- (outline-hide-current-entry)
+ (allout-hide-current-entry)
+ (save-excursion (allout-show-to-offshoot))
(save-excursion
- (outline-flag-region (point)
- (progn (outline-end-of-current-entry) (point))
- ?\n))))
-;;;_ > outline-hide-current-entry-completely ()
-; ... outline-hide-current-entry-completely also for isearch dynamic exposure:
-(defun outline-hide-current-entry-completely ()
- "Like outline-hide-current-entry, but conceal topic completely.
-
-Specifically intended for aberrant exposure states, like entries that were
-exposed by outline-show-entry but are within otherwise concealed regions."
- (interactive)
- (save-excursion
- (outline-goto-prefix)
- (outline-flag-region (if (not (bobp)) (1- (point)) (point))
- (progn (outline-pre-next-preface)
- (if (= ?\r (following-char))
- (point)
- (1- (point))))
- ?\r)))
-;;;_ > outline-show-current-subtree (&optional arg)
-(defun outline-show-current-subtree (&optional arg)
+ (allout-flag-region (point)
+ (progn (allout-end-of-entry t) (point))
+ nil)
+ )))
+;;;_ > allout-show-current-subtree (&optional arg)
+(defun allout-show-current-subtree (&optional arg)
"Show everything within the current topic. With a repeat-count,
-expose this topic and its' siblings."
+expose this topic and its siblings."
(interactive "P")
(save-excursion
- (if (<= (outline-current-depth) 0)
+ (if (<= (allout-current-depth) 0)
;; Outside any topics - try to get to the first:
- (if (not (outline-next-heading))
- (error "No topics.")
+ (if (not (allout-next-heading))
+ (error "No topics")
;; got to first, outermost topic - set to expose it and siblings:
(message "Above outermost topic - exposing all.")
- (outline-flag-region (point-min)(point-max) ?\n))
+ (allout-flag-region (point-min)(point-max) nil))
+ (allout-beginning-of-current-line)
(if (not arg)
- (outline-flag-current-subtree ?\n)
- (outline-beginning-of-level)
- (outline-expose-topic '(* :))))))
-;;;_ > outline-hide-current-subtree (&optional just-close)
-(defun outline-hide-current-subtree (&optional just-close)
+ (allout-flag-current-subtree nil)
+ (allout-beginning-of-level)
+ (allout-expose-topic '(* :))))))
+;;;_ > allout-current-topic-collapsed-p (&optional include-single-liners)
+(defun allout-current-topic-collapsed-p (&optional include-single-liners)
+ "True if the currently visible containing topic is already collapsed.
+
+Single line topics intrinsically can be considered as being both
+collapsed and uncollapsed. If optional INCLUDE-SINGLE-LINERS is
+true, then single-line topics are considered to be collapsed. By
+default, they are treated as being uncollapsed."
+ (save-excursion
+ (and
+ ;; Is the topic all on one line (allowing for trailing blank line)?
+ (>= (progn (allout-back-to-current-heading)
+ (move-end-of-line 1)
+ (point))
+ (allout-end-of-current-subtree (not (looking-at "\n\n"))))
+
+ (or include-single-liners
+ (progn (backward-char 1) (allout-hidden-p))))))
+;;;_ > allout-hide-current-subtree (&optional just-close)
+(defun allout-hide-current-subtree (&optional just-close)
"Close the current topic, or containing topic if this one is already closed.
If this topic is closed and it's a top level topic, close this topic
-and its' siblings.
+and its siblings.
-If optional arg JUST-CLOSE is non-nil, do not treat the parent or
+If optional arg JUST-CLOSE is non-nil, do not close the parent or
siblings, even if the target topic is already closed."
(interactive)
- (let ((from (point))
- (orig-eol (progn (end-of-line)
- (if (not (outline-goto-prefix))
- (error "No topics found.")
- (end-of-line)(point)))))
- (outline-flag-current-subtree ?\^M)
- (goto-char from)
- (if (and (= orig-eol (progn (goto-char orig-eol)
- (end-of-line)
- (point)))
- (not just-close)
- ;; Structure didn't change - try hiding current level:
- (goto-char from)
- (if (outline-up-current-level 1 t)
- t
- (goto-char 0)
- (let ((msg
- "Top-level topic already closed - closing siblings..."))
- (message msg)
- (outline-expose-topic '(0 :))
- (message (concat msg " Done.")))
- nil)
- (/= (outline-recent-depth) 0))
- (outline-hide-current-subtree))
- (goto-char from)))
-;;;_ > outline-show-current-branches ()
-(defun outline-show-current-branches ()
+ (let* ((from (point))
+ (sibs-msg "Top-level topic already closed - closing siblings...")
+ (current-exposed (not (allout-current-topic-collapsed-p t))))
+ (cond (current-exposed (allout-flag-current-subtree t))
+ (just-close nil)
+ ((allout-ascend) (allout-hide-current-subtree))
+ (t (goto-char 0)
+ (message sibs-msg)
+ (allout-goto-prefix-doublechecked)
+ (allout-expose-topic '(0 :))
+ (message (concat sibs-msg " Done."))))
+ (goto-char from)))
+;;;_ > allout-show-current-branches ()
+(defun allout-show-current-branches ()
"Show all subheadings of this heading, but not their bodies."
(interactive)
- (beginning-of-line)
- (outline-show-children t))
-;;;_ > outline-hide-current-leaves ()
-(defun outline-hide-current-leaves ()
- "Hide the bodies of the current topic and all its' offspring."
+ (let ((inhibit-field-text-motion t))
+ (beginning-of-line))
+ (allout-show-children t))
+;;;_ > allout-hide-current-leaves ()
+(defun allout-hide-current-leaves ()
+ "Hide the bodies of the current topic and all its offspring."
(interactive)
- (outline-back-to-current-heading)
- (outline-hide-region-body (point) (progn (outline-end-of-current-subtree)
+ (allout-back-to-current-heading)
+ (allout-hide-region-body (point) (progn (allout-end-of-current-subtree)
(point))))
;;;_ - Region and beyond
-;;;_ > outline-show-all ()
-(defun outline-show-all ()
+;;;_ > allout-show-all ()
+(defun allout-show-all ()
"Show all of the text in the buffer."
(interactive)
(message "Exposing entire buffer...")
- (outline-flag-region (point-min) (point-max) ?\n)
+ (allout-flag-region (point-min) (point-max) nil)
(message "Exposing entire buffer... Done."))
-;;;_ > outline-hide-bodies ()
-(defun outline-hide-bodies ()
+;;;_ > allout-hide-bodies ()
+(defun allout-hide-bodies ()
"Hide all of buffer except headings."
(interactive)
- (outline-hide-region-body (point-min) (point-max)))
-;;;_ > outline-hide-region-body (start end)
-(defun outline-hide-region-body (start end)
+ (allout-hide-region-body (point-min) (point-max)))
+;;;_ > allout-hide-region-body (start end)
+(defun allout-hide-region-body (start end)
"Hide all body lines in the region, but not headings."
(save-excursion
(save-restriction
(narrow-to-region start end)
(goto-char (point-min))
- (while (not (eobp))
- (outline-flag-region (point)
- (progn (outline-pre-next-preface) (point)) ?\^M)
- (if (not (eobp))
- (forward-char
- (if (looking-at "[\n\r][\n\r]")
- 2 1)))))))
-
-;;;_ > outline-expose-topic (spec)
-(defun outline-expose-topic (spec)
+ (let ((inhibit-field-text-motion t))
+ (while (not (eobp))
+ (end-of-line)
+ (allout-flag-region (point) (allout-end-of-entry) t)
+ (if (not (eobp))
+ (forward-char
+ (if (looking-at "\n\n")
+ 2 1))))))))
+
+;;;_ > allout-expose-topic (spec)
+(defun allout-expose-topic (spec)
"Apply exposure specs to successive outline topic items.
-Use the more convenient frontend, `outline-new-exposure', if you don't
-need evaluation of the arguments, or even better, the `outline-layout'
+Use the more convenient frontend, `allout-new-exposure', if you don't
+need evaluation of the arguments, or even better, the `allout-layout'
variable-keyed mode-activation/auto-exposure feature of allout outline
mode. See the respective documentation strings for more details.
Non-null lists recursively designate exposure specs for respective
subtopics of the current topic.
-The ':' repeat spec is used to specify exposure for any number of
+The `:' repeat spec is used to specify exposure for any number of
successive siblings, up to the trailing ones for which there are
-explicit specs following the ':'.
+explicit specs following the `:'.
Simple (numeric and null-list) specs are interpreted as follows:
- positive numbers open to the relative depth indicated by the
number, but do not force already opened subtopics to be closed.
- 0 means to close topic - hide all offspring.
- : - 'repeat'
+ : - `repeat'
apply prior element to all siblings at current level, *up to*
- those siblings that would be covered by specs following the ':'
+ those siblings that would be covered by specs following the `:'
on the list. Ie, apply to all topics at level but the last
ones. \(Only first of multiple colons at same level is
respected - subsequent ones are discarded.)
- - exposes the body of the corresponding topic.
Examples:
-\(outline-expose-topic '(-1 : 0))
+\(allout-expose-topic '(-1 : 0))
Close this and all following topics at current level, exposing
only their immediate children, but close down the last topic
at this current level completely.
-\(outline-expose-topic '(-1 () : 1 0))
+\(allout-expose-topic '(-1 () : 1 0))
Close current topic so only the immediate subtopics are shown;
show the children in the second to last topic, and completely
close the last one.
-\(outline-expose-topic '(-2 : -1 *))
+\(allout-expose-topic '(-2 : -1 *))
Expose children and grandchildren of all topics at current
level except the last two; expose children of the second to
last and completely open the last one."
(interactive "xExposure spec: ")
(if (not (listp spec))
nil
- (let ((depth (outline-depth))
+ (let ((depth (allout-depth))
(max-pos 0)
prev-elem curr-elem
- stay done
- snug-back
- )
+ stay)
(while spec
(setq prev-elem curr-elem
curr-elem (car spec)
(cond ; Do current element:
((null curr-elem) nil)
((symbolp curr-elem)
- (cond ((eq curr-elem '*) (outline-show-current-subtree)
- (if (> outline-recent-end-of-subtree max-pos)
- (setq max-pos outline-recent-end-of-subtree)))
- ((eq curr-elem '+) (outline-show-current-branches)
- (if (> outline-recent-end-of-subtree max-pos)
- (setq max-pos outline-recent-end-of-subtree)))
- ((eq curr-elem '-) (outline-show-current-entry))
+ (cond ((eq curr-elem '*) (allout-show-current-subtree)
+ (if (> allout-recent-end-of-subtree max-pos)
+ (setq max-pos allout-recent-end-of-subtree)))
+ ((eq curr-elem '+)
+ (if (not (allout-hidden-p))
+ (save-excursion (allout-hide-current-subtree t)))
+ (allout-show-current-branches)
+ (if (> allout-recent-end-of-subtree max-pos)
+ (setq max-pos allout-recent-end-of-subtree)))
+ ((eq curr-elem '-) (allout-show-current-entry))
((eq curr-elem ':)
(setq stay t)
- ;; Expand the 'repeat' spec to an explicit version,
+ ;; Expand the `repeat' spec to an explicit version,
;; w.r.t. remaining siblings:
(let ((residue ; = # of sibs not covered by remaining spec
;; Dang - could be nice to make use of the chart, sigh:
- (- (length (outline-chart-siblings))
+ (- (length (allout-chart-siblings))
(length spec))))
(if (< 0 residue)
;; Some residue - cover it with prev-elem:
(setq spec (append (make-list residue prev-elem)
spec)))))))
((numberp curr-elem)
- (if (and (>= 0 curr-elem) (outline-visible-p))
- (save-excursion (outline-hide-current-subtree t)
+ (if (and (>= 0 curr-elem) (not (allout-hidden-p)))
+ (save-excursion (allout-hide-current-subtree t)
(if (> 0 curr-elem)
nil
- (if (> outline-recent-end-of-subtree max-pos)
+ (if (> allout-recent-end-of-subtree max-pos)
(setq max-pos
- outline-recent-end-of-subtree)))))
+ allout-recent-end-of-subtree)))))
(if (> (abs curr-elem) 0)
- (progn (outline-show-children (abs curr-elem))
- (if (> outline-recent-end-of-subtree max-pos)
- (setq max-pos outline-recent-end-of-subtree)))))
+ (progn (allout-show-children (abs curr-elem))
+ (if (> allout-recent-end-of-subtree max-pos)
+ (setq max-pos allout-recent-end-of-subtree)))))
((listp curr-elem)
- (if (outline-descend-to-depth (1+ depth))
- (let ((got (outline-expose-topic curr-elem)))
+ (if (allout-descend-to-depth (1+ depth))
+ (let ((got (allout-expose-topic curr-elem)))
(if (and got (> got max-pos)) (setq max-pos got))))))
(cond (stay (setq stay nil))
((listp (car spec)) nil)
((> max-pos (point))
;; Capitalize on max-pos state to get us nearer next sibling:
(progn (goto-char (min (point-max) max-pos))
- (outline-next-heading)))
- ((outline-next-sibling depth))))
+ (allout-next-heading)))
+ ((allout-next-sibling depth))))
max-pos)))
-;;;_ > outline-old-expose-topic (spec &rest followers)
-(defun outline-old-expose-topic (spec &rest followers)
+;;;_ > allout-old-expose-topic (spec &rest followers)
+(defun allout-old-expose-topic (spec &rest followers)
- "Deprecated. Use outline-expose-topic \(with different schema
-format\) instead.
+ "Deprecated. Use `allout-expose-topic' \(with different schema
+format) instead.
Dictate wholesale exposure scheme for current topic, according to SPEC.
absolute value of the number.
- positive numbers just open to the relative depth indicated by the number.
- 0 just closes
- - '*' completely opens the topic, including bodies.
- - '+' shows all the sub headers, but not the bodies
- - '-' exposes the body and immediate offspring of the corresponding topic.
+ - `*' completely opens the topic, including bodies.
+ - `+' shows all the sub headers, but not the bodies
+ - `-' exposes the body and immediate offspring of the corresponding topic.
If the spec is a list, the first element must be a number, which
dictates the exposure depth of the topic as a whole. Subsequent
elements of the list are nested SPECs, dictating the specific exposure
for the corresponding offspring of the topic.
-Optional FOLLOWER arguments dictate exposure for succeeding siblings."
+Optional FOLLOWERS arguments dictate exposure for succeeding siblings."
(interactive "xExposure spec: ")
- (let ((depth (outline-current-depth))
- done
+ (let ((inhibit-field-text-motion t)
+ (depth (allout-current-depth))
max-pos)
(cond ((null spec) nil)
((symbolp spec)
- (if (eq spec '*) (outline-show-current-subtree))
- (if (eq spec '+) (outline-show-current-branches))
- (if (eq spec '-) (outline-show-current-entry)))
+ (if (eq spec '*) (allout-show-current-subtree))
+ (if (eq spec '+) (allout-show-current-branches))
+ (if (eq spec '-) (allout-show-current-entry)))
((numberp spec)
(if (>= 0 spec)
- (save-excursion (outline-hide-current-subtree t)
+ (save-excursion (allout-hide-current-subtree t)
(end-of-line)
(if (or (not max-pos)
(> (point) max-pos))
(if (> 0 spec)
(setq spec (* -1 spec)))))
(if (> spec 0)
- (outline-show-children spec)))
+ (allout-show-children spec)))
((listp spec)
- ;(let ((got (outline-old-expose-topic (car spec))))
+ ;(let ((got (allout-old-expose-topic (car spec))))
; (if (and got (or (not max-pos) (> got max-pos)))
; (setq max-pos got)))
- (let ((new-depth (+ (outline-current-depth) 1))
+ (let ((new-depth (+ (allout-current-depth) 1))
got)
- (setq max-pos (outline-old-expose-topic (car spec)))
+ (setq max-pos (allout-old-expose-topic (car spec)))
(setq spec (cdr spec))
(if (and spec
- (outline-descend-to-depth new-depth)
- (not (outline-hidden-p)))
- (progn (setq got (apply 'outline-old-expose-topic spec))
+ (allout-descend-to-depth new-depth)
+ (not (allout-hidden-p)))
+ (progn (setq got (apply 'allout-old-expose-topic spec))
(if (and got (or (not max-pos) (> got max-pos)))
(setq max-pos got)))))))
(while (and followers
(progn (goto-char max-pos)
(setq max-pos nil)))
(end-of-line)
- (outline-next-sibling depth)))
- (outline-old-expose-topic (car followers))
+ (allout-next-sibling depth)))
+ (allout-old-expose-topic (car followers))
(setq followers (cdr followers)))
max-pos))
-;;;_ > outline-new-exposure '()
-(defmacro outline-new-exposure (&rest spec)
- "Literal frontend for `outline-expose-topic', doesn't evaluate arguments.
-Some arguments that would need to be quoted in outline-expose-topic
-need not be quoted in outline-new-exposure.
+;;;_ > allout-new-exposure '()
+(defmacro allout-new-exposure (&rest spec)
+ "Literal frontend for `allout-expose-topic', doesn't evaluate arguments.
+Some arguments that would need to be quoted in `allout-expose-topic'
+need not be quoted in `allout-new-exposure'.
Cursor is left at start position.
-Use this instead of obsolete 'outline-exposure'.
+Use this instead of obsolete `allout-exposure'.
Examples:
-\(outline-exposure (-1 () () () 1) 0)
+\(allout-new-exposure (-1 () () () 1) 0)
Close current topic at current level so only the immediate
subtopics are shown, except also show the children of the
third subtopic; and close the next topic at the current level.
-\(outline-exposure : -1 0)
+\(allout-new-exposure : -1 0)
Close all topics at current level to expose only their
immediate children, except for the last topic at the current
- level, in which even its' immediate children are hidden.
-\(outline-exposure -2 : -1 *)
+ level, in which even its immediate children are hidden.
+\(allout-new-exposure -2 : -1 *)
Expose children and grandchildren of first topic at current
level, and expose children of subsequent topics at current
level *except* for the last, which should be opened completely."
(list 'save-excursion
- '(if (not (or (outline-goto-prefix)
- (outline-next-heading)))
- (error "outline-new-exposure: Can't find any outline topics."))
- (list 'outline-expose-topic (list 'quote spec))))
-;;;_ > outline-exposure '()
-(defmacro outline-exposure (&rest spec)
- "Being deprecated - use more recent 'outline-new-exposure' instead.
-
-Literal frontend for `outline-old-expose-topic', doesn't evaluate arguments
-and retains start position."
- (list 'save-excursion
- '(if (not (or (outline-goto-prefix)
- (outline-next-heading)))
- (error "Can't find any outline topics."))
- (cons 'outline-old-expose-topic
- (mapcar '(lambda (x) (list 'quote x)) spec))))
-
-;;;_ #7 ISearch with Dynamic Exposure
-;;;_ = outline-search-reconceal
-(defvar outline-search-reconceal nil
- "Track whether current search match was concealed outside of search.
-
-The value is the location of the match, if it was concealed, regular
-if the entire topic was concealed, in a list if the entry was concealed.")
-;;;_ = outline-search-quitting
-(defconst outline-search-quitting nil
- "Distinguishes isearch conclusion and cancellation.
-
-Used by isearch-terminate/outline-provisions and
-isearch-done/outline-provisions")
-
-
-;;;_ > outline-enwrap-isearch ()
-(defun outline-enwrap-isearch ()
- "Impose outline-mode isearch-mode wrappers for dynamic exposure in isearch.
-
-Isearch progressively exposes and reconceals hidden topics when
-working in outline mode, but works normally elsewhere.
-
-The function checks to ensure that the rebindings are done only once."
-
- ; Should isearch-mode be employed,
- (if (or (not outline-enwrap-isearch-mode)
- ; or are preparations already done?
- (fboundp 'real-isearch-terminate))
-
- ;; ... no - skip this all:
- nil
+ '(if (not (or (allout-goto-prefix-doublechecked)
+ (allout-next-heading)))
+ (error "allout-new-exposure: Can't find any outline topics"))
+ (list 'allout-expose-topic (list 'quote spec))))
- ;; ... yes:
-
- ; Ensure load of isearch-mode:
- (if (or (and (fboundp 'isearch-mode)
- (fboundp 'isearch-quote-char))
- (condition-case error
- (load-library outline-enwrap-isearch-mode)
- (file-error (message "Skipping isearch-mode provisions - %s '%s'"
- (car (cdr error))
- (car (cdr (cdr error))))
- (sit-for 1)
- ;; Inhibit subsequent tries and return nil:
- (setq outline-enwrap-isearch-mode nil))))
- ;; Isearch-mode loaded, encapsulate specific entry points for
- ;; outline dynamic-exposure business:
- (progn
-
- ;; stash crucial isearch-mode funcs under known, private
- ;; names, then register wrapper functions under the old
- ;; names, in their stead: 'isearch-quit' is pre isearch v 1.2.
- (fset 'real-isearch-terminate
- ; 'isearch-quit is pre v 1.2:
- (or (if (fboundp 'isearch-quit)
- (symbol-function 'isearch-quit))
- (if (fboundp 'isearch-abort)
- ; 'isearch-abort' is v 1.2 and on:
- (symbol-function 'isearch-abort))))
- (fset 'isearch-quit 'isearch-terminate/outline-provisions)
- (fset 'isearch-abort 'isearch-terminate/outline-provisions)
- (fset 'real-isearch-done (symbol-function 'isearch-done))
- (fset 'isearch-done 'isearch-done/outline-provisions)
- (fset 'real-isearch-update (symbol-function 'isearch-update))
- (fset 'isearch-update 'isearch-update/outline-provisions)
- (make-variable-buffer-local 'outline-search-reconceal)))))
-;;;_ > outline-isearch-arrival-business ()
-(defun outline-isearch-arrival-business ()
- "Do outline business like exposing current point, if necessary.
-
-Registers reconcealment requirements in outline-search-reconceal
-accordingly.
-
-Set outline-search-reconceal to nil if current point is not
-concealed, to value of point if entire topic is concealed, and a
-list containing point if only the topic body is concealed.
-
-This will be used to determine whether outline-hide-current-entry
-or outline-hide-current-entry-completely will be necessary to
-restore the prior concealment state."
-
- (if (outline-mode-p)
- (setq outline-search-reconceal
- (if (outline-hidden-p)
- (save-excursion
- (if (re-search-backward outline-line-boundary-regexp nil 1)
- ;; Nil value means we got to b-o-b - wouldn't need
- ;; to advance.
- (forward-char 1))
- ; We'll return point or list
- ; containing point, depending
- ; on concealment state of
- ; topic prefix.
- (prog1 (if (outline-hidden-p) (point) (list (point)))
- ; And reveal the current
- ; search target:
- (outline-show-entry)))))))
-;;;_ > outline-isearch-advancing-business ()
-(defun outline-isearch-advancing-business ()
- "Do outline business like deexposing current point, if necessary.
-
-Works according to reconceal state registration."
- (if (and (outline-mode-p) outline-search-reconceal)
- (save-excursion
- (if (listp outline-search-reconceal)
- ;; Leave the topic visible:
- (progn (goto-char (car outline-search-reconceal))
- (outline-hide-current-entry))
- ;; Rehide the entire topic:
- (goto-char outline-search-reconceal)
- (outline-hide-current-entry-completely)))))
-;;;_ > isearch-terminate/outline-provisions ()
-(defun isearch-terminate/outline-provisions ()
- (interactive)
- (if (and (outline-mode-p) outline-enwrap-isearch-mode)
- (outline-isearch-advancing-business))
- (let ((outline-search-quitting t)
- (outline-search-reconceal nil))
- (real-isearch-terminate)))
-;;;_ > isearch-done/outline-provisions ()
-(defun isearch-done/outline-provisions (&optional nopush)
- (interactive)
- (if (and (outline-mode-p) outline-enwrap-isearch-mode)
- (progn (if (and outline-search-reconceal
- (not (listp outline-search-reconceal)))
- ;; The topic was concealed - reveal it, its siblings,
- ;; and any ancestors that are still concealed:
- (save-excursion
- (message "(exposing destination)")(sit-for 0)
- (outline-goto-prefix)
- ; There may be a closed blank
- ; line between prior and
- ; current topic that would be
- ; missed - provide for it:
- (if (not (bobp))
- (progn (forward-char -1) ; newline
- (if (eq ?\r (preceding-char))
- (outline-flag-region (1- (point))
- (point)
- ?\n))
- (forward-char 1)))
- ; Goto parent
- (outline-ascend-to-depth (1- (outline-recent-depth)))
- (outline-show-children)))
- (if (and (boundp 'outline-search-quitting)
- outline-search-quitting)
- nil
- ; We're concluding abort:
- (outline-isearch-arrival-business)
- (outline-show-children))))
- (if nopush
- ;; isearch-done in newer version of isearch mode takes arg:
- (real-isearch-done nopush)
- (real-isearch-done)))
-;;;_ > isearch-update/outline-provisions ()
-(defun isearch-update/outline-provisions ()
- "Wrapper dynamically adjusts isearch target exposure.
-
-Appropriately exposes and reconceals hidden outline portions, as
-necessary, in the course of searching."
- (if (not (and (outline-mode-p) outline-enwrap-isearch-mode))
- ;; Just do the plain business:
- (real-isearch-update)
-
- ;; Ah - provide for outline conditions:
- (outline-isearch-advancing-business)
- (real-isearch-update)
- (cond (isearch-success (outline-isearch-arrival-business))
- ((not isearch-success) (outline-isearch-advancing-business)))))
-
-;;;_ #8 Copying and printing
+;;;_ #7 Systematic outline presentation - copying, printing, flattening
-;;;_ - Copy exposed
-;;;_ > outline-insert-listified (depth prefix bullet text)
-(defun outline-insert-listified (depth prefix bullet text)
- "Insert contents of listified outline portion in current buffer."
- (insert-string (concat (if (> depth 1) prefix "")
- (make-string (1- depth) ?\ )
- bullet))
- (while text
- (insert-string (car text))
- (if (setq text (cdr text))
- (insert-string "\n")))
- (insert-string "\n"))
-;;;_ > outline-copy-exposed (arg &optional tobuf)
-(defun outline-copy-exposed (arg &optional tobuf)
- "Duplicate exposed portions of current topic to another buffer.
-
-Other buffer has current buffers' name with \" exposed\" appended to it.
+;;;_ - Mapping and processing of topics
+;;;_ ( See also Subtree Charting, in Navigation code.)
+;;;_ > allout-stringify-flat-index (flat-index)
+(defun allout-stringify-flat-index (flat-index &optional context)
+ "Convert list representing section/subsection/... to document string.
+
+Optional arg CONTEXT indicates interior levels to include."
+ (let ((delim ".")
+ result
+ numstr
+ (context-depth (or (and context 2) 1)))
+ ;; Take care of the explicit context:
+ (while (> context-depth 0)
+ (setq numstr (int-to-string (car flat-index))
+ flat-index (cdr flat-index)
+ result (if flat-index
+ (cons delim (cons numstr result))
+ (cons numstr result))
+ context-depth (if flat-index (1- context-depth) 0)))
+ (setq delim " ")
+ ;; Take care of the indentation:
+ (if flat-index
+ (progn
+ (while flat-index
+ (setq result
+ (cons delim
+ (cons (make-string
+ (1+ (truncate (if (zerop (car flat-index))
+ 1
+ (log10 (car flat-index)))))
+ ? )
+ result)))
+ (setq flat-index (cdr flat-index)))
+ ;; Dispose of single extra delim:
+ (setq result (cdr result))))
+ (apply 'concat result)))
+;;;_ > allout-stringify-flat-index-plain (flat-index)
+(defun allout-stringify-flat-index-plain (flat-index)
+ "Convert list representing section/subsection/... to document string."
+ (let ((delim ".")
+ result)
+ (while flat-index
+ (setq result (cons (int-to-string (car flat-index))
+ (if result
+ (cons delim result))))
+ (setq flat-index (cdr flat-index)))
+ (apply 'concat result)))
+;;;_ > allout-stringify-flat-index-indented (flat-index)
+(defun allout-stringify-flat-index-indented (flat-index)
+ "Convert list representing section/subsection/... to document string."
+ (let ((delim ".")
+ result
+ numstr)
+ ;; Take care of the explicit context:
+ (setq numstr (int-to-string (car flat-index))
+ flat-index (cdr flat-index)
+ result (if flat-index
+ (cons delim (cons numstr result))
+ (cons numstr result)))
+ (setq delim " ")
+ ;; Take care of the indentation:
+ (if flat-index
+ (progn
+ (while flat-index
+ (setq result
+ (cons delim
+ (cons (make-string
+ (1+ (truncate (if (zerop (car flat-index))
+ 1
+ (log10 (car flat-index)))))
+ ? )
+ result)))
+ (setq flat-index (cdr flat-index)))
+ ;; Dispose of single extra delim:
+ (setq result (cdr result))))
+ (apply 'concat result)))
+;;;_ > allout-listify-exposed (&optional start end format)
+(defun allout-listify-exposed (&optional start end format)
-With repeat count, copy the exposed portions of entire buffer."
+ "Produce a list representing exposed topics in current region.
+
+This list can then be used by `allout-process-exposed' to manipulate
+the subject region.
+
+Optional START and END indicate bounds of region.
+
+optional arg, FORMAT, designates an alternate presentation form for
+the prefix:
+
+ list - Present prefix as numeric section.subsection..., starting with
+ section indicated by the list, innermost nesting first.
+ `indent' \(symbol) - Convert header prefixes to all white space,
+ except for distinctive bullets.
+
+The elements of the list produced are lists that represents a topic
+header and body. The elements of that list are:
+
+ - a number representing the depth of the topic,
+ - a string representing the header-prefix, including trailing whitespace and
+ bullet.
+ - a string representing the bullet character,
+ - and a series of strings, each containing one line of the exposed
+ portion of the topic entry."
+
+ (interactive "r")
+ (save-excursion
+ (let*
+ ((inhibit-field-text-motion t)
+ ;; state vars:
+ strings prefix result depth new-depth out gone-out bullet beg
+ next done)
+
+ (goto-char start)
+ (beginning-of-line)
+ ;; Goto initial topic, and register preceeding stuff, if any:
+ (if (> (allout-goto-prefix-doublechecked) start)
+ ;; First topic follows beginning point - register preliminary stuff:
+ (setq result (list (list 0 "" nil
+ (buffer-substring start (1- (point)))))))
+ (while (and (not done)
+ (not (eobp)) ; Loop until we've covered the region.
+ (not (> (point) end)))
+ (setq depth allout-recent-depth ; Current topics depth,
+ bullet (allout-recent-bullet) ; ... bullet,
+ prefix (allout-recent-prefix)
+ beg (progn (allout-end-of-prefix t) (point))) ; and beginning.
+ (setq done ; The boundary for the current topic:
+ (not (allout-next-visible-heading 1)))
+ (setq new-depth allout-recent-depth)
+ (setq gone-out out
+ out (< new-depth depth))
+ (beginning-of-line)
+ (setq next (point))
+ (goto-char beg)
+ (setq strings nil)
+ (while (> next (point)) ; Get all the exposed text in
+ (setq strings
+ (cons (buffer-substring
+ beg
+ ;To hidden text or end of line:
+ (progn
+ (end-of-line)
+ (allout-back-to-visible-text)))
+ strings))
+ (when (< (point) next) ; Resume from after hid text, if any.
+ (line-move 1)
+ (beginning-of-line))
+ (setq beg (point)))
+ ;; Accumulate list for this topic:
+ (setq strings (nreverse strings))
+ (setq result
+ (cons
+ (if format
+ (let ((special (if (string-match
+ (regexp-quote bullet)
+ allout-distinctive-bullets-string)
+ bullet)))
+ (cond ((listp format)
+ (list depth
+ (if allout-abbreviate-flattened-numbering
+ (allout-stringify-flat-index format
+ gone-out)
+ (allout-stringify-flat-index-plain
+ format))
+ strings
+ special))
+ ((eq format 'indent)
+ (if special
+ (list depth
+ (concat (make-string (1+ depth) ? )
+ (substring prefix -1))
+ strings)
+ (list depth
+ (make-string depth ? )
+ strings)))
+ (t (error "allout-listify-exposed: %s %s"
+ "invalid format" format))))
+ (list depth prefix strings))
+ result))
+ ;; Reasses format, if any:
+ (if (and format (listp format))
+ (cond ((= new-depth depth)
+ (setq format (cons (1+ (car format))
+ (cdr format))))
+ ((> new-depth depth) ; descending - assume by 1:
+ (setq format (cons 1 format)))
+ (t
+ ; Pop the residue:
+ (while (< new-depth depth)
+ (setq format (cdr format))
+ (setq depth (1- depth)))
+ ; And increment the current one:
+ (setq format
+ (cons (1+ (or (car format)
+ -1))
+ (cdr format)))))))
+ ;; Put the list with first at front, to last at back:
+ (nreverse result))))
+;;;_ > my-region-active-p ()
+(defmacro my-region-active-p ()
+ (if (fboundp 'region-active-p)
+ '(region-active-p)
+ 'mark-active))
+;;;_ > allout-process-exposed (&optional func from to frombuf
+;;; tobuf format)
+(defun allout-process-exposed (&optional func from to frombuf tobuf
+ format start-num)
+ "Map function on exposed parts of current topic; results to another buffer.
+
+All args are options; default values itemized below.
+
+Apply FUNCTION to exposed portions FROM position TO position in buffer
+FROMBUF to buffer TOBUF. Sixth optional arg, FORMAT, designates an
+alternate presentation form:
+
+ `flat' - Present prefix as numeric section.subsection..., starting with
+ section indicated by the start-num, innermost nesting first.
+ X`flat-indented' - Prefix is like `flat' for first topic at each
+ X level, but subsequent topics have only leaf topic
+ X number, padded with blanks to line up with first.
+ `indent' \(symbol) - Convert header prefixes to all white space,
+ except for distinctive bullets.
+
+Defaults:
+ FUNCTION: `allout-insert-listified'
+ FROM: region start, if region active, else start of buffer
+ TO: region end, if region active, else end of buffer
+ FROMBUF: current buffer
+ TOBUF: buffer name derived: \"*current-buffer-name exposed*\"
+ FORMAT: nil"
+
+ ; Resolve arguments,
+ ; defaulting if necessary:
+ (if (not func) (setq func 'allout-insert-listified))
+ (if (not (and from to))
+ (if (my-region-active-p)
+ (setq from (region-beginning) to (region-end))
+ (setq from (point-min) to (point-max))))
+ (if frombuf
+ (if (not (bufferp frombuf))
+ ;; Specified but not a buffer - get it:
+ (let ((got (get-buffer frombuf)))
+ (if (not got)
+ (error (concat "allout-process-exposed: source buffer "
+ frombuf
+ " not found."))
+ (setq frombuf got))))
+ ;; not specified - default it:
+ (setq frombuf (current-buffer)))
+ (if tobuf
+ (if (not (bufferp tobuf))
+ (setq tobuf (get-buffer-create tobuf)))
+ ;; not specified - default it:
+ (setq tobuf (concat "*" (buffer-name frombuf) " exposed*")))
+ (if (listp format)
+ (nreverse format))
+
+ (let* ((listified
+ (progn (set-buffer frombuf)
+ (allout-listify-exposed from to format))))
+ (set-buffer tobuf)
+ (mapcar func listified)
+ (pop-to-buffer tobuf)))
+
+;;;_ - Copy exposed
+;;;_ > allout-insert-listified (listified)
+(defun allout-insert-listified (listified)
+ "Insert contents of listified outline portion in current buffer.
+
+LISTIFIED is a list representing each topic header and body:
+
+ \`(depth prefix text)'
+
+or \`(depth prefix text bullet-plus)'
+
+If `bullet-plus' is specified, it is inserted just after the entire prefix."
+ (setq listified (cdr listified))
+ (let ((prefix (prog1
+ (car listified)
+ (setq listified (cdr listified))))
+ (text (prog1
+ (car listified)
+ (setq listified (cdr listified))))
+ (bullet-plus (car listified)))
+ (insert prefix)
+ (if bullet-plus (insert (concat " " bullet-plus)))
+ (while text
+ (insert (car text))
+ (if (setq text (cdr text))
+ (insert "\n")))
+ (insert "\n")))
+;;;_ > allout-copy-exposed-to-buffer (&optional arg tobuf format)
+(defun allout-copy-exposed-to-buffer (&optional arg tobuf format)
+ "Duplicate exposed portions of current outline to another buffer.
+
+Other buffer has current buffers name with \" exposed\" appended to it.
+
+With repeat count, copy the exposed parts of only the current topic.
+
+Optional second arg TOBUF is target buffer name.
+
+Optional third arg FORMAT, if non-nil, symbolically designates an
+alternate presentation format for the outline:
+
+ `flat' - Convert topic header prefixes to numeric
+ section.subsection... identifiers.
+ `indent' - Convert header prefixes to all white space, except for
+ distinctive bullets.
+ `indent-flat' - The best of both - only the first of each level has
+ the full path, the rest have only the section number
+ of the leaf, preceded by the right amount of indentation."
(interactive "P")
(if (not tobuf)
(setq tobuf (get-buffer-create (concat "*" (buffer-name) " exposed*"))))
(let* ((start-pt (point))
- (beg (if arg (point-min) (outline-back-to-current-heading)))
- (end (if arg (point-max) (outline-end-of-current-subtree)))
- (buf (current-buffer)))
+ (beg (if arg (allout-back-to-current-heading) (point-min)))
+ (end (if arg (allout-end-of-current-subtree) (point-max)))
+ (buf (current-buffer))
+ (start-list ()))
+ (if (eq format 'flat)
+ (setq format (if arg (save-excursion
+ (goto-char beg)
+ (allout-topic-flat-index))
+ '(1))))
(save-excursion (set-buffer tobuf)(erase-buffer))
- (outline-process-exposed 'outline-insert-listified
+ (allout-process-exposed 'allout-insert-listified
beg
end
(current-buffer)
- tobuf)
+ tobuf
+ format start-list)
(goto-char (point-min))
(pop-to-buffer buf)
(goto-char start-pt)))
+;;;_ > allout-flatten-exposed-to-buffer (&optional arg tobuf)
+(defun allout-flatten-exposed-to-buffer (&optional arg tobuf)
+ "Present numeric outline of outline's exposed portions in another buffer.
+
+The resulting outline is not compatible with outline mode - use
+`allout-copy-exposed-to-buffer' if you want that.
+
+Use `allout-indented-exposed-to-buffer' for indented presentation.
+
+With repeat count, copy the exposed portions of only current topic.
+
+Other buffer has current buffer's name with \" exposed\" appended to
+it, unless optional second arg TOBUF is specified, in which case it is
+used verbatim."
+ (interactive "P")
+ (allout-copy-exposed-to-buffer arg tobuf 'flat))
+;;;_ > allout-indented-exposed-to-buffer (&optional arg tobuf)
+(defun allout-indented-exposed-to-buffer (&optional arg tobuf)
+ "Present indented outline of outline's exposed portions in another buffer.
+
+The resulting outline is not compatible with outline mode - use
+`allout-copy-exposed-to-buffer' if you want that.
+
+Use `allout-flatten-exposed-to-buffer' for numeric sectional presentation.
+
+With repeat count, copy the exposed portions of only current topic.
+
+Other buffer has current buffer's name with \" exposed\" appended to
+it, unless optional second arg TOBUF is specified, in which case it is
+used verbatim."
+ (interactive "P")
+ (allout-copy-exposed-to-buffer arg tobuf 'indent))
;;;_ - LaTeX formatting
-;;;_ > outline-latex-verb-quote (str &optional flow)
-(defun outline-latex-verb-quote (str &optional flow)
- "Return copy of STRING for literal reproduction across latex processing.
+;;;_ > allout-latex-verb-quote (string &optional flow)
+(defun allout-latex-verb-quote (string &optional flow)
+ "Return copy of STRING for literal reproduction across LaTeX processing.
Expresses the original characters \(including carriage returns) of the
-string across latex processing."
- (mapconcat '(lambda (char)
- ;;;mess: (cond ((memq char '(?"" ?$ ?% ?# ?& ?- ?" ?` ?^ ?- ?*));;;"))))
+string across LaTeX processing."
+ (mapconcat (function
+ (lambda (char)
(cond ((memq char '(?\\ ?$ ?% ?# ?& ?{ ?} ?_ ?^ ?- ?*))
(concat "\\char" (number-to-string char) "{}"))
((= char ?\n) "\\\\")
- (t (char-to-string char))))
- str
+ (t (char-to-string char)))))
+ string
""))
-;;;_ > outline-latex-verbatim-quote-curr-line ()
-(defun outline-latex-verbatim-quote-curr-line ()
- "Express line for exact \(literal\) representation across latex processing.
+;;;_ > allout-latex-verbatim-quote-curr-line ()
+(defun allout-latex-verbatim-quote-curr-line ()
+ "Express line for exact \(literal) representation across LaTeX processing.
Adjust line contents so it is unaltered \(from the original line)
-across latex processing, within the context of a 'verbatim'
+across LaTeX processing, within the context of a `verbatim'
environment. Leaves point at the end of the line."
- (beginning-of-line)
- (let ((beg (point))
- (end (progn (end-of-line)(point))))
- (goto-char beg)
- (while (re-search-forward "\\\\"
- ;;"\\\\\\|\\{\\|\\}\\|\\_\\|\\$\\|\\\"\\|\\&\\|\\^\\|\\-\\|\\*\\|#"
- end ; bounded by end-of-line
- 1) ; no matches, move to end & return nil
- (goto-char (match-beginning 0))
- (insert-string "\\")
- (setq end (1+ end))
- (goto-char (1+ (match-end 0))))))
-;;;_ > outline-insert-latex-header (buf)
-(defun outline-insert-latex-header (buf)
- "Insert initial latex commands at point in BUFFER."
+ (let ((inhibit-field-text-motion t))
+ (beginning-of-line)
+ (let ((beg (point))
+ (end (progn (end-of-line)(point))))
+ (goto-char beg)
+ (while (re-search-forward "\\\\"
+ ;;"\\\\\\|\\{\\|\\}\\|\\_\\|\\$\\|\\\"\\|\\&\\|\\^\\|\\-\\|\\*\\|#"
+ end ; bounded by end-of-line
+ 1) ; no matches, move to end & return nil
+ (goto-char (match-beginning 2))
+ (insert "\\")
+ (setq end (1+ end))
+ (goto-char (1+ (match-end 2)))))))
+;;;_ > allout-insert-latex-header (buffer)
+(defun allout-insert-latex-header (buffer)
+ "Insert initial LaTeX commands at point in BUFFER."
;; Much of this is being derived from the stuff in appendix of E in
;; the TeXBook, pg 421.
- (set-buffer buf)
+ (set-buffer buffer)
(let ((doc-style (format "\n\\documentstyle{%s}\n"
"report"))
- (page-numbering (if outline-number-pages
+ (page-numbering (if allout-number-pages
"\\pagestyle{empty}\n"
""))
- (linesdef (concat "\\def\\beginlines{"
- "\\par\\begingroup\\nobreak\\medskip"
- "\\parindent=0pt\n"
- " \\kern1pt\\nobreak \\obeylines \\obeyspaces "
- "\\everypar{\\strut}}\n"
- "\\def\\endlines{"
- "\\kern1pt\\endgroup\\medbreak\\noindent}\n"))
(titlecmd (format "\\newcommand{\\titlecmd}[1]{{%s #1}}\n"
- outline-title-style))
+ allout-title-style))
(labelcmd (format "\\newcommand{\\labelcmd}[1]{{%s #1}}\n"
- outline-label-style))
+ allout-label-style))
(headlinecmd (format "\\newcommand{\\headlinecmd}[1]{{%s #1}}\n"
- outline-head-line-style))
+ allout-head-line-style))
(bodylinecmd (format "\\newcommand{\\bodylinecmd}[1]{{%s #1}}\n"
- outline-body-line-style))
+ allout-body-line-style))
(setlength (format "%s%s%s%s"
"\\newlength{\\stepsize}\n"
"\\setlength{\\stepsize}{"
- outline-indent
+ allout-indent
"}\n"))
(oneheadline (format "%s%s%s%s%s%s%s"
"\\newcommand{\\OneHeadLine}[3]{%\n"
"\\hspace*{#2\\stepsize}%\n"
"\\labelcmd{#1}\\hspace*{.2cm}"
"\\headlinecmd{#3}\\\\["
- outline-line-skip
+ allout-line-skip
"]\n}\n"))
(onebodyline (format "%s%s%s%s%s%s"
"\\newcommand{\\OneBodyLine}[2]{%\n"
"\\noindent%\n"
"\\hspace*{#1\\stepsize}%\n"
"\\bodylinecmd{#2}\\\\["
- outline-line-skip
+ allout-line-skip
"]\n}\n"))
(begindoc "\\begin{document}\n\\begin{center}\n")
(title (format "%s%s%s%s"
"\\titlecmd{"
- (outline-latex-verb-quote (if outline-title
- (condition-case err
- (eval outline-title)
+ (allout-latex-verb-quote (if allout-title
+ (condition-case nil
+ (eval allout-title)
(error "<unnamed buffer>"))
"Unnamed Outline"))
"}\n"
hoffset
vspace)
)))
-;;;_ > outline-insert-latex-trailer (buf)
-(defun outline-insert-latex-trailer (buf)
- "Insert concluding latex commands at point in BUFFER."
- (set-buffer buf)
+;;;_ > allout-insert-latex-trailer (buffer)
+(defun allout-insert-latex-trailer (buffer)
+ "Insert concluding LaTeX commands at point in BUFFER."
+ (set-buffer buffer)
(insert "\n\\end{document}\n"))
-;;;_ > outline-latexify-one-item (depth prefix bullet text)
-(defun outline-latexify-one-item (depth prefix bullet text)
+;;;_ > allout-latexify-one-item (depth prefix bullet text)
+(defun allout-latexify-one-item (depth prefix bullet text)
"Insert LaTeX commands for formatting one outline item.
-Args are the topics' numeric DEPTH, the header PREFIX lead string, the
+Args are the topics numeric DEPTH, the header PREFIX lead string, the
BULLET string, and a list of TEXT strings for the body."
(let* ((head-line (if text (car text)))
(body-lines (cdr text))
(curr-line)
body-content bop)
; Do the head line:
- (insert-string (concat "\\OneHeadLine{\\verb\1 "
- (outline-latex-verb-quote bullet)
- "\1}{"
- depth
- "}{\\verb\1 "
- (if head-line
- (outline-latex-verb-quote head-line)
- "")
- "\1}\n"))
+ (insert (concat "\\OneHeadLine{\\verb\1 "
+ (allout-latex-verb-quote bullet)
+ "\1}{"
+ depth
+ "}{\\verb\1 "
+ (if head-line
+ (allout-latex-verb-quote head-line)
+ "")
+ "\1}\n"))
(if (not body-lines)
nil
- ;;(insert-string "\\beginlines\n")
- (insert-string "\\begin{verbatim}\n")
+ ;;(insert "\\beginlines\n")
+ (insert "\\begin{verbatim}\n")
(while body-lines
(setq curr-line (car body-lines))
(if (and (not body-content)
(setq curr-line (concat (substring curr-line 0 bop)
">"
(substring curr-line bop))))
- ;;(insert-string "|" (car body-lines) "|")
- (insert-string curr-line)
- (outline-latex-verbatim-quote-curr-line)
- (insert-string "\n")
+ ;;(insert "|" (car body-lines) "|")
+ (insert curr-line)
+ (allout-latex-verbatim-quote-curr-line)
+ (insert "\n")
(setq body-lines (cdr body-lines)))
(if body-content
(setq body-content nil)
(forward-char -1)
- (insert-string "\\ ")
+ (insert "\\ ")
(forward-char 1))
- ;;(insert-string "\\endlines\n")
- (insert-string "\\end{verbatim}\n")
+ ;;(insert "\\endlines\n")
+ (insert "\\end{verbatim}\n")
)))
-;;;_ > outline-latexify-exposed (arg &optional tobuf)
-(defun outline-latexify-exposed (arg &optional tobuf)
- "Format current topic's exposed portions to TOBUF for latex processing.
+;;;_ > allout-latexify-exposed (arg &optional tobuf)
+(defun allout-latexify-exposed (arg &optional tobuf)
+ "Format current topics exposed portions to TOBUF for LaTeX processing.
TOBUF defaults to a buffer named the same as the current buffer, but
with \"*\" prepended and \" latex-formed*\" appended.
(setq tobuf
(get-buffer-create (concat "*" (buffer-name) " latexified*"))))
(let* ((start-pt (point))
- (beg (if arg (point-min) (outline-back-to-current-heading)))
- (end (if arg (point-max) (outline-end-of-current-subtree)))
+ (beg (if arg (point-min) (allout-back-to-current-heading)))
+ (end (if arg (point-max) (allout-end-of-current-subtree)))
(buf (current-buffer)))
(set-buffer tobuf)
(erase-buffer)
- (outline-insert-latex-header tobuf)
+ (allout-insert-latex-header tobuf)
(goto-char (point-max))
- (outline-process-exposed 'outline-latexify-one-item
+ (allout-process-exposed 'allout-latexify-one-item
beg
end
buf
tobuf)
(goto-char (point-max))
- (outline-insert-latex-trailer tobuf)
+ (allout-insert-latex-trailer tobuf)
(goto-char (point-min))
(pop-to-buffer buf)
(goto-char start-pt)))
+;;;_ #8 Encryption
+;;;_ > allout-toggle-current-subtree-encryption (&optional fetch-pass)
+(defun allout-toggle-current-subtree-encryption (&optional fetch-pass)
+ "Encrypt clear or decrypt encoded text of visibly-containing topic's contents.
+
+Optional FETCH-PASS universal argument provokes key-pair encryption with
+single universal argument. With doubled universal argument \(value = 16),
+it forces prompting for the passphrase regardless of availability from the
+passphrase cache. With no universal argument, the appropriate passphrase
+is obtained from the cache, if available, else from the user.
+
+Currently only GnuPG encryption is supported.
+
+\**NOTE WELL** that the encrypted text must be ascii-armored. For gnupg
+encryption, include the option ``armor'' in your ~/.gnupg/gpg.conf file.
+
+Both symmetric-key and key-pair encryption is implemented. Symmetric is
+the default, use a single \(x4) universal argument for keypair mode.
+
+Encrypted topic's bullet is set to a `~' to signal that the contents of the
+topic \(body and subtopics, but not heading) is pending encryption or
+encrypted. `*' asterisk immediately after the bullet signals that the body
+is encrypted, its' absence means the topic is meant to be encrypted but is
+not. When a file with topics pending encryption is saved, topics pending
+encryption are encrypted. See allout-encrypt-unencrypted-on-saves for
+auto-encryption specifics.
+
+\**NOTE WELL** that automatic encryption that happens during saves will
+default to symmetric encryption - you must manually \(re)encrypt key-pair
+encrypted topics if you want them to continue to use the key-pair cipher.
+
+Level-one topics, with prefix consisting solely of an `*' asterisk, cannot be
+encrypted. If you want to encrypt the contents of a top-level topic, use
+\\[allout-shift-in] to increase its depth.
+
+ Passphrase Caching
+
+The encryption passphrase is solicited if not currently available in the
+passphrase cache from a recent encryption action.
+
+The solicited passphrase is retained for reuse in a buffer-specific cache
+for some set period of time \(default, 60 seconds), after which the string
+is nulled. The passphrase cache timeout is customized by setting
+`pgg-passphrase-cache-expiry'.
+
+ Symmetric Passphrase Hinting and Verification
+
+If the file previously had no associated passphrase, or had a different
+passphrase than specified, the user is prompted to repeat the new one for
+corroboration. A random string encrypted by the new passphrase is set on
+the buffer-specific variable `allout-passphrase-verifier-string', for
+confirmation of the passphrase when next obtained, before encrypting or
+decrypting anything with it. This helps avoid mistakenly shifting between
+keys.
+
+If allout customization var `allout-passphrase-verifier-handling' is
+non-nil, an entry for `allout-passphrase-verifier-string' and its value is
+added to an Emacs 'local variables' section at the end of the file, which
+is created if necessary. That setting is for retention of the passphrase
+verifier across Emacs sessions.
+
+Similarly, `allout-passphrase-hint-string' stores a user-provided reminder
+about their passphrase, and `allout-passphrase-hint-handling' specifies
+when the hint is presented, or if passphrase hints are disabled. If
+enabled \(see the `allout-passphrase-hint-handling' docstring for details),
+the hint string is stored in the local-variables section of the file, and
+solicited whenever the passphrase is changed."
+ (interactive "P")
+ (save-excursion
+ (allout-back-to-current-heading)
+ (allout-toggle-subtree-encryption fetch-pass)
+ )
+ )
+;;;_ > allout-toggle-subtree-encryption (&optional fetch-pass)
+(defun allout-toggle-subtree-encryption (&optional fetch-pass)
+ "Encrypt clear text or decrypt encoded topic contents \(body and subtopics.)
+
+Optional FETCH-PASS universal argument provokes key-pair encryption with
+single universal argument. With doubled universal argument \(value = 16),
+it forces prompting for the passphrase regardless of availability from the
+passphrase cache. With no universal argument, the appropriate passphrase
+is obtained from the cache, if available, else from the user.
+
+Currently only GnuPG encryption is supported.
+
+\**NOTE WELL** that the encrypted text must be ascii-armored. For gnupg
+encryption, include the option ``armor'' in your ~/.gnupg/gpg.conf file.
+
+See `allout-toggle-current-subtree-encryption' for more details."
+
+ (interactive "P")
+ (save-excursion
+ (allout-end-of-prefix t)
+
+ (if (= allout-recent-depth 1)
+ (error (concat "Cannot encrypt or decrypt level 1 topics -"
+ " shift it in to make it encryptable")))
+
+ (let* ((allout-buffer (current-buffer))
+ ;; Asses location:
+ (bullet-pos allout-recent-prefix-beginning)
+ (after-bullet-pos (point))
+ (was-encrypted
+ (progn (if (= (point-max) after-bullet-pos)
+ (error "no body to encrypt"))
+ (allout-encrypted-topic-p)))
+ (was-collapsed (if (not (search-forward "\n" nil t))
+ nil
+ (backward-char 1)
+ (allout-hidden-p)))
+ (subtree-beg (1+ (point)))
+ (subtree-end (allout-end-of-subtree))
+ (subject-text (buffer-substring-no-properties subtree-beg
+ subtree-end))
+ (subtree-end-char (char-after (1- subtree-end)))
+ (subtree-trailing-char (char-after subtree-end))
+ ;; kluge - result-text needs to be nil, but we also want to
+ ;; check for the error condition
+ (result-text (if (or (string= "" subject-text)
+ (string= "\n" subject-text))
+ (error "No topic contents to %scrypt"
+ (if was-encrypted "de" "en"))
+ nil))
+ ;; Assess key parameters:
+ (key-info (or
+ ;; detect the type by which it is already encrypted
+ (and was-encrypted
+ (allout-encrypted-key-info subject-text))
+ (and (member fetch-pass '(4 (4)))
+ '(keypair nil))
+ '(symmetric nil)))
+ (for-key-type (car key-info))
+ (for-key-identity (cadr key-info))
+ (fetch-pass (and fetch-pass (member fetch-pass '(16 (16))))))
+
+ (setq result-text
+ (allout-encrypt-string subject-text was-encrypted
+ (current-buffer)
+ for-key-type for-key-identity fetch-pass))
+
+ ;; Replace the subtree with the processed product.
+ (allout-unprotected
+ (progn
+ (set-buffer allout-buffer)
+ (delete-region subtree-beg subtree-end)
+ (insert result-text)
+ (if was-collapsed
+ (allout-flag-region (1- subtree-beg) (point) t))
+ ;; adjust trailing-blank-lines to preserve topic spacing:
+ (if (not was-encrypted)
+ (if (and (= subtree-end-char ?\n)
+ (= subtree-trailing-char ?\n))
+ (insert subtree-trailing-char)))
+ ;; Ensure that the item has an encrypted-entry bullet:
+ (if (not (string= (buffer-substring-no-properties
+ (1- after-bullet-pos) after-bullet-pos)
+ allout-topic-encryption-bullet))
+ (progn (goto-char (1- after-bullet-pos))
+ (delete-char 1)
+ (insert allout-topic-encryption-bullet)))
+ (if was-encrypted
+ ;; Remove the is-encrypted bullet qualifier:
+ (progn (goto-char after-bullet-pos)
+ (delete-char 1))
+ ;; Add the is-encrypted bullet qualifier:
+ (goto-char after-bullet-pos)
+ (insert "*"))))
+ (run-hook-with-args 'allout-structure-added-hook
+ bullet-pos subtree-end))))
+;;;_ > allout-encrypt-string (text decrypt allout-buffer key-type for-key
+;;; fetch-pass &optional retried verifying
+;;; passphrase)
+(defun allout-encrypt-string (text decrypt allout-buffer key-type for-key
+ fetch-pass &optional retried rejected
+ verifying passphrase)
+ "Encrypt or decrypt message TEXT.
+
+If DECRYPT is true (default false), then decrypt instead of encrypt.
+
+FETCH-PASS (default false) forces fresh prompting for the passphrase.
+
+KEY-TYPE indicates whether to use a 'symmetric or 'keypair cipher.
+
+FOR-KEY is human readable identification of the first of the user's
+eligible secret keys a keypair decryption targets, or else nil.
+
+Optional RETRIED is for internal use - conveys the number of failed keys
+that have been solicited in sequence leading to this current call.
+
+Optional PASSPHRASE enables explicit delivery of the decryption passphrase,
+for verification purposes.
+
+Optional REJECTED is for internal use - conveys the number of
+rejections due to matches against
+`allout-encryption-ciphertext-rejection-regexps', as limited by
+`allout-encryption-ciphertext-rejection-ceiling'.
+
+Returns the resulting string, or nil if the transformation fails."
+
+ (require 'pgg)
+
+ (if (not (fboundp 'pgg-encrypt-symmetric))
+ (error "Allout encryption depends on a newer version of pgg"))
+
+ (let* ((scheme (upcase
+ (format "%s" (or pgg-scheme pgg-default-scheme "GPG"))))
+ (for-key (and (equal key-type 'keypair)
+ (or for-key
+ (split-string (read-string
+ (format "%s message recipients: "
+ scheme))
+ "[ \t,]+"))))
+ (target-prompt-id (if (equal key-type 'keypair)
+ (if (= (length for-key) 1)
+ (car for-key) for-key)
+ (buffer-name allout-buffer)))
+ (target-cache-id (format "%s-%s"
+ key-type
+ (if (equal key-type 'keypair)
+ target-prompt-id
+ (or (buffer-file-name allout-buffer)
+ target-prompt-id))))
+ (strip-plaintext-regexps
+ (if (not decrypt)
+ (allout-get-configvar-values
+ 'allout-encryption-plaintext-sanitization-regexps)))
+ (reject-ciphertext-regexps
+ (if (not decrypt)
+ (allout-get-configvar-values
+ 'allout-encryption-ciphertext-rejection-regexps)))
+ (rejected (or rejected 0))
+ (rejections-left (- allout-encryption-ciphertext-rejection-ceiling
+ rejected))
+ result-text status)
+
+ (if (and fetch-pass (not passphrase))
+ ;; Force later fetch by evicting passphrase from the cache.
+ (pgg-remove-passphrase-from-cache target-cache-id t))
+
+ (catch 'encryption-failed
+
+ ;; Obtain the passphrase if we don't already have one and we're not
+ ;; doing a keypair encryption:
+ (if (not (or passphrase
+ (and (equal key-type 'keypair)
+ (not decrypt))))
+
+ (setq passphrase (allout-obtain-passphrase for-key
+ target-cache-id
+ target-prompt-id
+ key-type
+ allout-buffer
+ retried fetch-pass)))
+
+ (with-temp-buffer
+
+ (insert text)
+
+ (when (and strip-plaintext-regexps (not decrypt))
+ (dolist (re strip-plaintext-regexps)
+ (let ((re (if (listp re) (car re) re))
+ (replacement (if (listp re) (cadr re) "")))
+ (goto-char (point-min))
+ (while (re-search-forward re nil t)
+ (replace-match replacement nil nil)))))
+
+ (cond
+
+ ;; symmetric:
+ ((equal key-type 'symmetric)
+ (setq status
+ (if decrypt
+
+ (pgg-decrypt (point-min) (point-max) passphrase)
+
+ (pgg-encrypt-symmetric (point-min) (point-max)
+ passphrase)))
+
+ (if status
+ (pgg-situate-output (point-min) (point-max))
+ ;; failed - handle passphrase caching
+ (if verifying
+ (throw 'encryption-failed nil)
+ (pgg-remove-passphrase-from-cache target-cache-id t)
+ (error "Symmetric-cipher %scryption failed - %s"
+ (if decrypt "de" "en")
+ "try again with different passphrase."))))
+
+ ;; encrypt 'keypair:
+ ((not decrypt)
+
+ (setq status
+
+ (pgg-encrypt for-key
+ nil (point-min) (point-max) passphrase))
+
+ (if status
+ (pgg-situate-output (point-min) (point-max))
+ (error (pgg-remove-passphrase-from-cache target-cache-id t)
+ (error "encryption failed"))))
+
+ ;; decrypt 'keypair:
+ (t
+
+ (setq status
+ (pgg-decrypt (point-min) (point-max) passphrase))
+
+ (if status
+ (pgg-situate-output (point-min) (point-max))
+ (error (pgg-remove-passphrase-from-cache target-cache-id t)
+ (error "decryption failed")))))
+
+ (setq result-text
+ (buffer-substring-no-properties
+ 1 (- (point-max) (if decrypt 0 1))))
+ )
+
+ ;; validate result - non-empty
+ (cond ((not result-text)
+ (if verifying
+ nil
+ ;; transform was fruitless, retry w/new passphrase.
+ (pgg-remove-passphrase-from-cache target-cache-id t)
+ (allout-encrypt-string text decrypt allout-buffer
+ key-type for-key nil
+ (if retried (1+ retried) 1)
+ rejected verifying nil)))
+
+ ;; Retry (within limit) if ciphertext contains rejections:
+ ((and (not decrypt)
+ ;; Check for disqualification of this ciphertext:
+ (let ((regexps reject-ciphertext-regexps)
+ reject-it)
+ (while (and regexps (not reject-it))
+ (setq reject-it (string-match (car regexps)
+ result-text))
+ (pop regexps))
+ reject-it))
+ (setq rejections-left (1- rejections-left))
+ (if (<= rejections-left 0)
+ (error (concat "Ciphertext rejected too many times"
+ " (%s), per `%s'")
+ allout-encryption-ciphertext-rejection-ceiling
+ 'allout-encryption-ciphertext-rejection-regexps)
+ (allout-encrypt-string text decrypt allout-buffer
+ key-type for-key nil
+ retried (1+ rejected)
+ verifying passphrase)))
+ ;; Barf if encryption yields extraordinary control chars:
+ ((and (not decrypt)
+ (string-match "[\C-a\C-k\C-o-\C-z\C-@]"
+ result-text))
+ (error (concat "Encryption produced non-armored text, which"
+ "conflicts with allout mode - reconfigure!")))
+
+ ;; valid result and just verifying or non-symmetric:
+ ((or verifying (not (equal key-type 'symmetric)))
+ (if (or verifying decrypt)
+ (pgg-add-passphrase-to-cache target-cache-id
+ passphrase t))
+ result-text)
+
+ ;; valid result and regular symmetric - "register"
+ ;; passphrase with mnemonic aids/cache.
+ (t
+ (set-buffer allout-buffer)
+ (if passphrase
+ (pgg-add-passphrase-to-cache target-cache-id
+ passphrase t))
+ (allout-update-passphrase-mnemonic-aids for-key passphrase
+ allout-buffer)
+ result-text)
+ )
+ )
+ )
+ )
+;;;_ > allout-obtain-passphrase (for-key cache-id prompt-id key-type
+;;; allout-buffer retried fetch-pass)
+(defun allout-obtain-passphrase (for-key cache-id prompt-id key-type
+ allout-buffer retried fetch-pass)
+ "Obtain passphrase for a key from the cache or else from the user.
+
+When obtaining from the user, symmetric-cipher passphrases are verified
+against either, if available and enabled, a random string that was
+encrypted against the passphrase, or else against repeated entry by the
+user for corroboration.
+
+FOR-KEY is the key for which the passphrase is being obtained.
+
+CACHE-ID is the cache id of the key for the passphrase.
+
+PROMPT-ID is the id for use when prompting the user.
+
+KEY-TYPE is either 'symmetric or 'keypair.
+
+ALLOUT-BUFFER is the buffer containing the entry being en/decrypted.
+
+RETRIED is the number of this attempt to obtain this passphrase.
+
+FETCH-PASS causes the passphrase to be solicited from the user, regardless
+of the availability of a cached copy."
+
+ (if (not (equal key-type 'symmetric))
+ ;; do regular passphrase read on non-symmetric passphrase:
+ (pgg-read-passphrase (format "%s passphrase%s: "
+ (upcase (format "%s" (or pgg-scheme
+ pgg-default-scheme
+ "GPG")))
+ (if prompt-id
+ (format " for %s" prompt-id)
+ ""))
+ cache-id t)
+
+ ;; Symmetric hereon:
+
+ (save-excursion
+ (set-buffer allout-buffer)
+ (let* ((hint (if (and (not (string= allout-passphrase-hint-string ""))
+ (or (equal allout-passphrase-hint-handling 'always)
+ (and (equal allout-passphrase-hint-handling
+ 'needed)
+ retried)))
+ (format " [%s]" allout-passphrase-hint-string)
+ ""))
+ (retry-message (if retried (format " (%s retry)" retried) ""))
+ (prompt-sans-hint (format "'%s' symmetric passphrase%s: "
+ prompt-id retry-message))
+ (full-prompt (format "'%s' symmetric passphrase%s%s: "
+ prompt-id hint retry-message))
+ (prompt full-prompt)
+ (verifier-string (allout-get-encryption-passphrase-verifier))
+
+ (cached (and (not fetch-pass)
+ (pgg-read-passphrase-from-cache cache-id t)))
+ (got-pass (or cached
+ (pgg-read-passphrase full-prompt cache-id t)))
+ confirmation)
+
+ (if (not got-pass)
+ nil
+
+ ;; Duplicate our handle on the passphrase so it's not clobbered by
+ ;; deactivate-passwd memory clearing:
+ (setq got-pass (copy-sequence got-pass))
+
+ (cond (verifier-string
+ (save-window-excursion
+ (if (allout-encrypt-string verifier-string 'decrypt
+ allout-buffer 'symmetric
+ for-key nil 0 0 'verifying
+ (copy-sequence got-pass))
+ (setq confirmation (format "%s" got-pass))))
+
+ (if (and (not confirmation)
+ (if (yes-or-no-p
+ (concat "Passphrase differs from established"
+ " - use new one instead? "))
+ ;; deactivate password for subsequent
+ ;; confirmation:
+ (progn
+ (pgg-remove-passphrase-from-cache cache-id t)
+ (setq prompt prompt-sans-hint)
+ nil)
+ t))
+ (progn (pgg-remove-passphrase-from-cache cache-id t)
+ (error "Wrong passphrase."))))
+ ;; No verifier string - force confirmation by repetition of
+ ;; (new) passphrase:
+ ((or fetch-pass (not cached))
+ (pgg-remove-passphrase-from-cache cache-id t))))
+ ;; confirmation vs new input - doing pgg-read-passphrase will do the
+ ;; right thing, in either case:
+ (if (not confirmation)
+ (setq confirmation
+ (pgg-read-passphrase (concat prompt
+ " ... confirm spelling: ")
+ cache-id t)))
+ (prog1
+ (if (equal got-pass confirmation)
+ confirmation
+ (if (yes-or-no-p (concat "spelling of original and"
+ " confirmation differ - retry? "))
+ (progn (setq retried (if retried (1+ retried) 1))
+ (pgg-remove-passphrase-from-cache cache-id t)
+ ;; recurse to this routine:
+ (pgg-read-passphrase prompt-sans-hint cache-id t))
+ (pgg-remove-passphrase-from-cache cache-id t)
+ (error "Confirmation failed."))))))))
+;;;_ > allout-encrypted-topic-p ()
+(defun allout-encrypted-topic-p ()
+ "True if the current topic is encryptable and encrypted."
+ (save-excursion
+ (allout-end-of-prefix t)
+ (and (string= (buffer-substring-no-properties (1- (point)) (point))
+ allout-topic-encryption-bullet)
+ (looking-at "\\*"))
+ )
+ )
+;;;_ > allout-encrypted-key-info (text)
+;; XXX gpg-specific, alas
+(defun allout-encrypted-key-info (text)
+ "Return a pair of the key type and identity of a recipient's secret key.
+
+The key type is one of 'symmetric or 'keypair.
+
+if 'keypair, and some of the user's secret keys are among those for which
+the message was encoded, return the identity of the first. otherwise,
+return nil for the second item of the pair.
+
+An error is raised if the text is not encrypted."
+ (require 'pgg-parse)
+ (save-excursion
+ (with-temp-buffer
+ (insert text)
+ (let* ((parsed-armor (pgg-parse-armor-region (point-min) (point-max)))
+ (type (if (pgg-gpg-symmetric-key-p parsed-armor)
+ 'symmetric
+ 'keypair))
+ secret-keys first-secret-key for-key-owner)
+ (if (equal type 'keypair)
+ (setq secret-keys (pgg-gpg-lookup-all-secret-keys)
+ first-secret-key (pgg-gpg-select-matching-key parsed-armor
+ secret-keys)
+ for-key-owner (and first-secret-key
+ (pgg-gpg-lookup-key-owner
+ first-secret-key))))
+ (list type (pgg-gpg-key-id-from-key-owner for-key-owner))
+ )
+ )
+ )
+ )
+;;;_ > allout-create-encryption-passphrase-verifier (passphrase)
+(defun allout-create-encryption-passphrase-verifier (passphrase)
+ "Encrypt random message for later validation of symmetric key's passphrase."
+ ;; use 20 random ascii characters, across the entire ascii range.
+ (random t)
+ (let ((spew (make-string 20 ?\0)))
+ (dotimes (i (length spew))
+ (aset spew i (1+ (random 254))))
+ (allout-encrypt-string spew nil (current-buffer) 'symmetric
+ nil nil 0 0 passphrase))
+ )
+;;;_ > allout-update-passphrase-mnemonic-aids (for-key passphrase
+;;; outline-buffer)
+(defun allout-update-passphrase-mnemonic-aids (for-key passphrase
+ outline-buffer)
+ "Update passphrase verifier and hint strings if necessary.
+
+See `allout-passphrase-verifier-string' and `allout-passphrase-hint-string'
+settings.
+
+PASSPHRASE is the passphrase being mnemonicized
+
+OUTLINE-BUFFER is the buffer of the outline being adjusted.
+
+These are used to help the user keep track of the passphrase they use for
+symmetric encryption in the file.
+
+Behavior is governed by `allout-passphrase-verifier-handling',
+`allout-passphrase-hint-handling', and also, controlling whether the values
+are preserved on Emacs local file variables,
+`allout-enable-file-variable-adjustment'."
+
+ ;; If passphrase doesn't agree with current verifier:
+ ;; - adjust the verifier
+ ;; - if passphrase hint handling is enabled, adjust the passphrase hint
+ ;; - if file var settings are enabled, adjust the file vars
+
+ (let* ((new-verifier-needed (not (allout-verify-passphrase
+ for-key passphrase outline-buffer)))
+ (new-verifier-string
+ (if new-verifier-needed
+ ;; Collapse to a single line and enclose in string quotes:
+ (subst-char-in-string
+ ?\n ?\C-a (allout-create-encryption-passphrase-verifier
+ passphrase))))
+ new-hint)
+ (when new-verifier-string
+ ;; do the passphrase hint first, since it's interactive
+ (when (and allout-passphrase-hint-handling
+ (not (equal allout-passphrase-hint-handling 'disabled)))
+ (setq new-hint
+ (read-from-minibuffer "Passphrase hint to jog your memory: "
+ allout-passphrase-hint-string))
+ (when (not (string= new-hint allout-passphrase-hint-string))
+ (setq allout-passphrase-hint-string new-hint)
+ (allout-adjust-file-variable "allout-passphrase-hint-string"
+ allout-passphrase-hint-string)))
+ (when allout-passphrase-verifier-handling
+ (setq allout-passphrase-verifier-string new-verifier-string)
+ (allout-adjust-file-variable "allout-passphrase-verifier-string"
+ allout-passphrase-verifier-string))
+ )
+ )
+ )
+;;;_ > allout-get-encryption-passphrase-verifier ()
+(defun allout-get-encryption-passphrase-verifier ()
+ "Return text of the encrypt passphrase verifier, unmassaged, or nil if none.
+
+Derived from value of `allout-passphrase-verifier-string'."
+
+ (let ((verifier-string (and (boundp 'allout-passphrase-verifier-string)
+ allout-passphrase-verifier-string)))
+ (if verifier-string
+ ;; Return it uncollapsed
+ (subst-char-in-string ?\C-a ?\n verifier-string))
+ )
+ )
+;;;_ > allout-verify-passphrase (key passphrase allout-buffer)
+(defun allout-verify-passphrase (key passphrase allout-buffer)
+ "True if passphrase successfully decrypts verifier, nil otherwise.
+
+\"Otherwise\" includes absence of passphrase verifier."
+ (save-excursion
+ (set-buffer allout-buffer)
+ (and (boundp 'allout-passphrase-verifier-string)
+ allout-passphrase-verifier-string
+ (allout-encrypt-string (allout-get-encryption-passphrase-verifier)
+ 'decrypt allout-buffer 'symmetric
+ key nil 0 0 'verifying passphrase)
+ t)))
+;;;_ > allout-next-topic-pending-encryption (&optional except-mark)
+(defun allout-next-topic-pending-encryption (&optional except-mark)
+ "Return the point of the next topic pending encryption, or nil if none.
+
+EXCEPT-MARK identifies a point whose containing topics should be excluded
+from encryption. This supports 'except-current mode of
+`allout-encrypt-unencrypted-on-saves'.
+
+Such a topic has the allout-topic-encryption-bullet without an
+immediately following '*' that would mark the topic as being encrypted. It
+must also have content."
+ (let (done got content-beg)
+ (while (not done)
+
+ (if (not (re-search-forward
+ (format "\\(\\`\\|\n\\)%s *%s[^*]"
+ (regexp-quote allout-header-prefix)
+ (regexp-quote allout-topic-encryption-bullet))
+ nil t))
+ (setq got nil
+ done t)
+ (goto-char (setq got (match-beginning 0)))
+ (if (looking-at "\n")
+ (forward-char 1))
+ (setq got (point)))
+
+ (cond ((not got)
+ (setq done t))
+
+ ((not (search-forward "\n"))
+ (setq got nil
+ done t))
+
+ ((eobp)
+ (setq got nil
+ done t))
+
+ (t
+ (setq content-beg (point))
+ (backward-char 1)
+ (allout-end-of-subtree)
+ (if (or (<= (point) content-beg)
+ (and except-mark
+ (<= content-beg except-mark)
+ (>= (point) except-mark)))
+ ;; Continue looking
+ (setq got nil)
+ ;; Got it!
+ (setq done t)))
+ )
+ )
+ (if got
+ (goto-char got))
+ )
+ )
+;;;_ > allout-encrypt-decrypted (&optional except-mark)
+(defun allout-encrypt-decrypted (&optional except-mark)
+ "Encrypt topics pending encryption except those containing exemption point.
+
+EXCEPT-MARK identifies a point whose containing topics should be excluded
+from encryption. This supports 'except-current mode of
+`allout-encrypt-unencrypted-on-saves'.
+
+If a topic that is currently being edited was encrypted, we return a list
+containing the location of the topic and the location of the cursor just
+before the topic was encrypted. This can be used, eg, to decrypt the topic
+and exactly resituate the cursor if this is being done as part of a file
+save. See `allout-encrypt-unencrypted-on-saves' for more info."
+
+ (interactive "p")
+ (save-excursion
+ (let* ((current-mark (point-marker))
+ (current-mark-position (marker-position current-mark))
+ was-modified
+ bo-subtree
+ editing-topic editing-point)
+ (goto-char (point-min))
+ (while (allout-next-topic-pending-encryption except-mark)
+ (setq was-modified (buffer-modified-p))
+ (when (save-excursion
+ (and (boundp 'allout-encrypt-unencrypted-on-saves)
+ allout-encrypt-unencrypted-on-saves
+ (setq bo-subtree (re-search-forward "$"))
+ (not (allout-hidden-p))
+ (>= current-mark (point))
+ (allout-end-of-current-subtree)
+ (<= current-mark (point))))
+ (setq editing-topic (point)
+ ;; we had to wait for this 'til now so prior topics are
+ ;; encrypted, any relevant text shifts are in place:
+ editing-point (- current-mark-position
+ (count-trailing-whitespace-region
+ bo-subtree current-mark-position))))
+ (allout-toggle-subtree-encryption)
+ (if (not was-modified)
+ (set-buffer-modified-p nil))
+ )
+ (if (not was-modified)
+ (set-buffer-modified-p nil))
+ (if editing-topic (list editing-topic editing-point))
+ )
+ )
+ )
+
;;;_ #9 miscellaneous
-;;;_ > outline-mark-topic ()
-(defun outline-mark-topic ()
- "Put the region around topic currently containing point."
- (interactive)
- (beginning-of-line)
- (outline-goto-prefix)
- (push-mark (point))
- (outline-end-of-current-subtree)
- (exchange-point-and-mark))
-;;;_ > outlineify-sticky ()
+;;;_ : Mode:
+;;;_ > outlineify-sticky ()
;; outlinify-sticky is correct spelling; provide this alias for sticklers:
+;;;###autoload
(defalias 'outlinify-sticky 'outlineify-sticky)
+;;;###autoload
(defun outlineify-sticky (&optional arg)
- "Activate outline mode and establish file var so it is started subseqently.
+ "Activate outline mode and establish file var so it is started subsequently.
-See doc-string for `outline-layout' and `outline-init' for details on
+See doc-string for `allout-layout' and `allout-init' for details on
setup for auto-startup."
(interactive "P")
- (outline-mode t)
+ (allout-mode t)
(save-excursion
(goto-char (point-min))
- (if (looking-at outline-regexp)
+ (if (allout-goto-prefix)
t
- (outline-open-topic 2)
- (insert-string (concat "Dummy outline topic header - see"
- "`outline-mode' docstring for info."))
- (next-line 1)
+ (allout-open-topic 2)
+ (insert (concat "Dummy outline topic header - see"
+ "`allout-mode' docstring: `^Hm'."))
+ (allout-adjust-file-variable
+ "allout-layout" (or allout-layout '(-1 : 0))))))
+;;;_ > allout-file-vars-section-data ()
+(defun allout-file-vars-section-data ()
+ "Return data identifying the file-vars section, or nil if none.
+
+Returns list `(beginning-point prefix-string suffix-string)'."
+ ;; minimally gleaned from emacs 21.4 files.el hack-local-variables function.
+ (let (beg prefix suffix)
+ (save-excursion
(goto-char (point-max))
- (next-line 1)
- (outline-open-topic 0)
- (insert-string "Local emacs vars.\n")
- (outline-open-topic 1)
- (insert-string "(`outline-layout' is for allout.el outline-mode)\n")
- (outline-open-topic 0)
- (insert-string "Local variables:\n")
- (outline-open-topic 0)
- (insert-string (format "outline-layout: %s\n"
- (or outline-layout
- '(1 : 0))))
- (outline-open-topic 0)
- (insert-string "End:\n"))))
-;;;_ > solicit-char-in-string (prompt string &optional do-defaulting)
+ (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move)
+ (if (let ((case-fold-search t))
+ (not (search-forward "Local Variables:" nil t)))
+ nil
+ (setq beg (- (point) 16))
+ (setq suffix (buffer-substring-no-properties
+ (point)
+ (progn (if (search-forward "\n" nil t)
+ (forward-char -1))
+ (point))))
+ (setq prefix (buffer-substring-no-properties
+ (progn (if (search-backward "\n" nil t)
+ (forward-char 1))
+ (point))
+ beg))
+ (list beg prefix suffix))
+ )
+ )
+ )
+;;;_ > allout-adjust-file-variable (varname value)
+(defun allout-adjust-file-variable (varname value)
+ "Adjust the setting of an Emacs file variable named VARNAME to VALUE.
+
+This activity is inhibited if either `enable-local-variables'
+`allout-enable-file-variable-adjustment' are nil.
+
+When enabled, an entry for the variable is created if not already present,
+or changed if established with a different value. The section for the file
+variables, itself, is created if not already present. When created, the
+section lines \(including the section line) exist as second-level topics in
+a top-level topic at the end of the file.
+
+`enable-local-variables' must be true for any of this to happen."
+ (if (not (and enable-local-variables
+ allout-enable-file-variable-adjustment))
+ nil
+ (save-excursion
+ (let ((inhibit-field-text-motion t)
+ (section-data (allout-file-vars-section-data))
+ beg prefix suffix)
+ (if section-data
+ (setq beg (car section-data)
+ prefix (cadr section-data)
+ suffix (car (cddr section-data)))
+ ;; create the section
+ (goto-char (point-max))
+ (open-line 1)
+ (allout-open-topic 0)
+ (end-of-line)
+ (insert "Local emacs vars.\n")
+ (allout-open-topic 1)
+ (setq beg (point)
+ suffix ""
+ prefix (buffer-substring-no-properties (progn
+ (beginning-of-line)
+ (point))
+ beg))
+ (goto-char beg)
+ (insert "Local variables:\n")
+ (allout-open-topic 0)
+ (insert "End:\n")
+ )
+ ;; look for existing entry or create one, leaving point for insertion
+ ;; of new value:
+ (goto-char beg)
+ (allout-show-to-offshoot)
+ (if (search-forward (concat "\n" prefix varname ":") nil t)
+ (let* ((value-beg (point))
+ (line-end (progn (if (search-forward "\n" nil t)
+ (forward-char -1))
+ (point)))
+ (value-end (- line-end (length suffix))))
+ (if (> value-end value-beg)
+ (delete-region value-beg value-end)))
+ (end-of-line)
+ (open-line 1)
+ (forward-line 1)
+ (insert (concat prefix varname ":")))
+ (insert (format " %S%s" value suffix))
+ )
+ )
+ )
+ )
+;;;_ > allout-get-configvar-values (varname)
+(defun allout-get-configvar-values (configvar-name)
+ "Return a list of values of the symbols in list bound to CONFIGVAR-NAME.
+
+The user is prompted for removal of symbols that are unbound, and they
+otherwise are ignored.
+
+CONFIGVAR-NAME should be the name of the configuration variable,
+not its value."
+
+ (let ((configvar-value (symbol-value configvar-name))
+ got)
+ (dolist (sym configvar-value)
+ (if (not (boundp sym))
+ (if (yes-or-no-p (format "%s entry `%s' is unbound - remove it? "
+ configvar-name sym))
+ (delq sym (symbol-value configvar-name)))
+ (push (symbol-value sym) got)))
+ (reverse got)))
+;;;_ : Topics:
+;;;_ > allout-mark-topic ()
+(defun allout-mark-topic ()
+ "Put the region around topic currently containing point."
+ (interactive)
+ (let ((inhibit-field-text-motion t))
+ (beginning-of-line))
+ (allout-goto-prefix-doublechecked)
+ (push-mark (point))
+ (allout-end-of-current-subtree)
+ (exchange-point-and-mark))
+;;;_ : UI:
+;;;_ > solicit-char-in-string (prompt string &optional do-defaulting)
(defun solicit-char-in-string (prompt string &optional do-defaulting)
"Solicit (with first arg PROMPT) choice of a character from string STRING.
(message "%s" new-prompt)
;; We do our own reading here, so we can circumvent, eg, special
- ;; treatment for '?' character. (Might oughta change minibuffer
- ;; keymap instead, oh well.)
+ ;; treatment for `?' character. (Oughta use minibuffer keymap instead.)
(setq got
(char-to-string (let ((cursor-in-echo-area nil)) (read-char))))
- (if (null (string-match (regexp-quote got) string))
- (if (and do-defaulting (string= got "\^M"))
- ;; We're defaulting, return null string to indicate that:
- (setq got "")
- ;; Failed match and not defaulting,
- ;; set the prompt to give feedback,
- (setq new-prompt (concat prompt
- got
- " ...pick from: "
- string
- ""))
- ;; and set loop to try again:
- (setq got nil))
- ;; Got a match - give feedback:
- (message "")))
- ;; got something out of loop - return it:
- got)
+ (setq got
+ (cond ((string-match (regexp-quote got) string) got)
+ ((and do-defaulting (string= got "\r"))
+ ;; Return empty string to default:
+ "")
+ ((string= got "\C-g") (signal 'quit nil))
+ (t
+ (setq new-prompt (concat prompt
+ got
+ " ...pick from: "
+ string
+ ""))
+ nil))))
+ ;; got something out of loop - return it:
+ got)
)
-;;;_ > regexp-sans-escapes (string)
+;;;_ : Strings:
+;;;_ > regexp-sans-escapes (string)
(defun regexp-sans-escapes (regexp &optional successive-backslashes)
"Return a copy of REGEXP with all character escapes stripped out.
(regexp-sans-escapes (substring regexp 1)))
;; Exclude first char, but maintain count:
(regexp-sans-escapes (substring regexp 1) successive-backslashes))))
-;;;_ - add-hook definition for divergent emacsen
-;;;_ > add-hook (hook function &optional append)
-(if (not (fboundp 'add-hook))
- (defun add-hook (hook function &optional append)
- "Add to the value of HOOK the function FUNCTION unless already present.
-\(It becomes the first hook on the list unless optional APPEND is non-nil, in
-which case it becomes the last). HOOK should be a symbol, and FUNCTION may be
-any valid function. HOOK's value should be a list of functions, not a single
-function. If HOOK is void, it is first set to nil."
- (or (boundp hook) (set hook nil))
- (or (if (consp function)
- ;; Clever way to tell whether a given lambda-expression
- ;; is equal to anything in the hook.
- (let ((tail (assoc (cdr function) (symbol-value hook))))
- (equal function tail))
- (memq function (symbol-value hook)))
- (set hook
- (if append
- (nconc (symbol-value hook) (list function))
- (cons function (symbol-value hook)))))))
-
-;;;_ #10 Under development
-;;;_ > outline-bullet-isearch (&optional bullet)
-(defun outline-bullet-isearch (&optional bullet)
- "Isearch \(regexp\) for topic with bullet BULLET."
+;;;_ > count-trailing-whitespace-region (beg end)
+(defun count-trailing-whitespace-region (beg end)
+ "Return number of trailing whitespace chars between BEG and END.
+
+If BEG is bigger than END we return 0."
+ (if (> beg end)
+ 0
+ (save-excursion
+ (goto-char beg)
+ (let ((count 0))
+ (while (re-search-forward "[ ][ ]*$" end t)
+ (goto-char (1+ (match-beginning 2)))
+ (setq count (1+ count)))
+ count))))
+;;;_ > allout-format-quote (string)
+(defun allout-format-quote (string)
+ "Return a copy of string with all \"%\" characters doubled."
+ (apply 'concat
+ (mapcar (lambda (char) (if (= char ?%) "%%" (char-to-string char)))
+ string)))
+;;;_ : lists
+;;;_ > allout-flatten (list)
+(defun allout-flatten (list)
+ "Return a list of all atoms in list."
+ ;; classic.
+ (cond ((null list) nil)
+ ((atom (car list)) (cons (car list) (allout-flatten (cdr list))))
+ (t (append (allout-flatten (car list)) (allout-flatten (cdr list))))))
+;;;_ : Compatability:
+;;;_ > allout-mark-marker to accommodate divergent emacsen:
+(defun allout-mark-marker (&optional force buffer)
+ "Accommodate the different signature for `mark-marker' across Emacsen.
+
+XEmacs takes two optional args, while mainline GNU Emacs does not,
+so pass them along when appropriate."
+ (if (featurep 'xemacs)
+ (apply 'mark-marker force buffer)
+ (mark-marker)))
+;;;_ > subst-char-in-string if necessary
+(if (not (fboundp 'subst-char-in-string))
+ (defun subst-char-in-string (fromchar tochar string &optional inplace)
+ "Replace FROMCHAR with TOCHAR in STRING each time it occurs.
+Unless optional argument INPLACE is non-nil, return a new string."
+ (let ((i (length string))
+ (newstr (if inplace string (copy-sequence string))))
+ (while (> i 0)
+ (setq i (1- i))
+ (if (eq (aref newstr i) fromchar)
+ (aset newstr i tochar)))
+ newstr)))
+;;;_ > wholenump if necessary
+(if (not (fboundp 'wholenump))
+ (defalias 'wholenump 'natnump))
+;;;_ > remove-overlays if necessary
+(if (not (fboundp 'remove-overlays))
+ (defun remove-overlays (&optional beg end name val)
+ "Clear BEG and END of overlays whose property NAME has value VAL.
+Overlays might be moved and/or split.
+BEG and END default respectively to the beginning and end of buffer."
+ (unless beg (setq beg (point-min)))
+ (unless end (setq end (point-max)))
+ (if (< end beg)
+ (setq beg (prog1 end (setq end beg))))
+ (save-excursion
+ (dolist (o (overlays-in beg end))
+ (when (eq (overlay-get o name) val)
+ ;; Either push this overlay outside beg...end
+ ;; or split it to exclude beg...end
+ ;; or delete it entirely (if it is contained in beg...end).
+ (if (< (overlay-start o) beg)
+ (if (> (overlay-end o) end)
+ (progn
+ (move-overlay (copy-overlay o)
+ (overlay-start o) beg)
+ (move-overlay o end (overlay-end o)))
+ (move-overlay o (overlay-start o) beg))
+ (if (> (overlay-end o) end)
+ (move-overlay o end (overlay-end o))
+ (delete-overlay o)))))))
+ )
+;;;_ > copy-overlay if necessary - xemacs ~ 21.4
+(if (not (fboundp 'copy-overlay))
+ (defun copy-overlay (o)
+ "Return a copy of overlay O."
+ (let ((o1 (make-overlay (overlay-start o) (overlay-end o)
+ ;; FIXME: there's no easy way to find the
+ ;; insertion-type of the two markers.
+ (overlay-buffer o)))
+ (props (overlay-properties o)))
+ (while props
+ (overlay-put o1 (pop props) (pop props)))
+ o1)))
+;;;_ > add-to-invisibility-spec if necessary - xemacs ~ 21.4
+(if (not (fboundp 'add-to-invisibility-spec))
+ (defun add-to-invisibility-spec (element)
+ "Add ELEMENT to `buffer-invisibility-spec'.
+See documentation for `buffer-invisibility-spec' for the kind of elements
+that can be added."
+ (if (eq buffer-invisibility-spec t)
+ (setq buffer-invisibility-spec (list t)))
+ (setq buffer-invisibility-spec
+ (cons element buffer-invisibility-spec))))
+;;;_ > remove-from-invisibility-spec if necessary - xemacs ~ 21.4
+(if (not (fboundp 'remove-from-invisibility-spec))
+ (defun remove-from-invisibility-spec (element)
+ "Remove ELEMENT from `buffer-invisibility-spec'."
+ (if (consp buffer-invisibility-spec)
+ (setq buffer-invisibility-spec (delete element
+ buffer-invisibility-spec)))))
+;;;_ > move-beginning-of-line if necessary - older emacs, xemacs
+(if (not (fboundp 'move-beginning-of-line))
+ (defun move-beginning-of-line (arg)
+ "Move point to beginning of current line as displayed.
+\(This disregards invisible newlines such as those
+which are part of the text that an image rests on.)
+
+With argument ARG not nil or 1, move forward ARG - 1 lines first.
+If point reaches the beginning or end of buffer, it stops there.
+To ignore intangibility, bind `inhibit-point-motion-hooks' to t."
+ (interactive "p")
+ (or arg (setq arg 1))
+ (if (/= arg 1)
+ (condition-case nil (line-move (1- arg)) (error nil)))
+
+ ;; Move to beginning-of-line, ignoring fields and invisibles.
+ (skip-chars-backward "^\n")
+ (while (and (not (bobp)) (line-move-invisible-p (1- (point))))
+ (goto-char (if (featurep 'xemacs)
+ (previous-property-change (point))
+ (previous-char-property-change (point))))
+ (skip-chars-backward "^\n"))
+ (vertical-motion 0))
+)
+;;;_ > move-end-of-line if necessary - older emacs, xemacs
+(if (not (fboundp 'move-end-of-line))
+ (defun move-end-of-line (arg)
+ "Move point to end of current line as displayed.
+\(This disregards invisible newlines such as those
+which are part of the text that an image rests on.)
+
+With argument ARG not nil or 1, move forward ARG - 1 lines first.
+If point reaches the beginning or end of buffer, it stops there.
+To ignore intangibility, bind `inhibit-point-motion-hooks' to t."
+ (interactive "p")
+ (or arg (setq arg 1))
+ (let (done)
+ (while (not done)
+ (let ((newpos
+ (save-excursion
+ (let ((goal-column 0))
+ (and (condition-case nil
+ (or (line-move arg) t)
+ (error nil))
+ (not (bobp))
+ (progn
+ (while (and (not (bobp))
+ (line-move-invisible-p (1- (point))))
+ (goto-char
+ (previous-char-property-change (point))))
+ (backward-char 1)))
+ (point)))))
+ (goto-char newpos)
+ (if (and (> (point) newpos)
+ (eq (preceding-char) ?\n))
+ (backward-char 1)
+ (if (and (> (point) newpos) (not (eobp))
+ (not (eq (following-char) ?\n)))
+ ;; If we skipped something intangible
+ ;; and now we're not really at eol,
+ ;; keep going.
+ (setq arg 1)
+ (setq done t)))))))
+ )
+;;;_ > line-move-invisible-p if necessary
+(if (not (fboundp 'line-move-invisible-p))
+ (defun line-move-invisible-p (pos)
+ "Return non-nil if the character after POS is currently invisible."
+ (let ((prop
+ (get-char-property pos 'invisible)))
+ (if (eq buffer-invisibility-spec t)
+ prop
+ (or (memq prop buffer-invisibility-spec)
+ (assq prop buffer-invisibility-spec))))))
+
+;;;_ #10 Unfinished
+;;;_ > allout-bullet-isearch (&optional bullet)
+(defun allout-bullet-isearch (&optional bullet)
+ "Isearch \(regexp) for topic with bullet BULLET."
(interactive)
(if (not bullet)
(setq bullet (solicit-char-in-string
"ISearch for topic with bullet: "
- (regexp-sans-escapes outline-bullets-string))))
-
+ (regexp-sans-escapes allout-bullets-string))))
+
(let ((isearch-regexp t)
(isearch-string (concat "^"
- outline-header-prefix
+ allout-header-prefix
"[ \t]*"
bullet)))
(isearch-repeat 'forward)
(isearch-mode t)))
-;;;_ ? Re hooking up with isearch - use isearch-op-fun rather than
-;;; wrapping the isearch functions.
-;;;_* Local emacs vars.
-;;; The following `outline-layout' local variable setting:
-;;; - closes all topics from the first topic to just before the third-to-last,
-;;; - shows the children of the third to last (config vars)
-;;; - and the second to last (code section),
-;;; - and closes the last topic (this local-variables section).
-;;;Local variables:
-;;;outline-layout: (0 : -1 -1 0)
-;;;End:
+;;;_ #11 Unit tests - this should be last item before "Provide"
+;;;_ > allout-run-unit-tests ()
+(defun allout-run-unit-tests ()
+ "Run the various allout unit tests."
+ (message "Running allout tests...")
+ (allout-test-resumptions)
+ (message "Running allout tests... Done.")
+ (sit-for .5))
+;;;_ : test resumptions:
+;;;_ > allout-tests-obliterate-variable (name)
+(defun allout-tests-obliterate-variable (name)
+ "Completely unbind variable with NAME."
+ (if (local-variable-p name) (kill-local-variable name))
+ (while (boundp name) (makunbound name)))
+;;;_ > allout-test-resumptions ()
+(defvar allout-tests-globally-unbound nil
+ "Fodder for allout resumptions tests - defvar just for byte compiler.")
+(defvar allout-tests-globally-true nil
+ "Fodder for allout resumptions tests - defvar just just for byte compiler.")
+(defvar allout-tests-locally-true nil
+ "Fodder for allout resumptions tests - defvar just for byte compiler.")
+(defun allout-test-resumptions ()
+ "Exercise allout resumptions."
+ ;; for each resumption case, we also test that the right local/global
+ ;; scopes are affected during resumption effects:
+
+ ;; ensure that previously unbound variables return to the unbound state.
+ (with-temp-buffer
+ (allout-tests-obliterate-variable 'allout-tests-globally-unbound)
+ (allout-add-resumptions '(allout-tests-globally-unbound t))
+ (assert (not (default-boundp 'allout-tests-globally-unbound)))
+ (assert (local-variable-p 'allout-tests-globally-unbound))
+ (assert (boundp 'allout-tests-globally-unbound))
+ (assert (equal allout-tests-globally-unbound t))
+ (allout-do-resumptions)
+ (assert (not (local-variable-p 'allout-tests-globally-unbound)))
+ (assert (not (boundp 'allout-tests-globally-unbound))))
+
+ ;; ensure that variable with prior global value is resumed
+ (with-temp-buffer
+ (allout-tests-obliterate-variable 'allout-tests-globally-true)
+ (setq allout-tests-globally-true t)
+ (allout-add-resumptions '(allout-tests-globally-true nil))
+ (assert (equal (default-value 'allout-tests-globally-true) t))
+ (assert (local-variable-p 'allout-tests-globally-true))
+ (assert (equal allout-tests-globally-true nil))
+ (allout-do-resumptions)
+ (assert (not (local-variable-p 'allout-tests-globally-true)))
+ (assert (boundp 'allout-tests-globally-true))
+ (assert (equal allout-tests-globally-true t)))
+
+ ;; ensure that prior local value is resumed
+ (with-temp-buffer
+ (allout-tests-obliterate-variable 'allout-tests-locally-true)
+ (set (make-local-variable 'allout-tests-locally-true) t)
+ (assert (not (default-boundp 'allout-tests-locally-true))
+ nil (concat "Test setup mistake - variable supposed to"
+ " not have global binding, but it does."))
+ (assert (local-variable-p 'allout-tests-locally-true)
+ nil (concat "Test setup mistake - variable supposed to have"
+ " local binding, but it lacks one."))
+ (allout-add-resumptions '(allout-tests-locally-true nil))
+ (assert (not (default-boundp 'allout-tests-locally-true)))
+ (assert (local-variable-p 'allout-tests-locally-true))
+ (assert (equal allout-tests-locally-true nil))
+ (allout-do-resumptions)
+ (assert (boundp 'allout-tests-locally-true))
+ (assert (local-variable-p 'allout-tests-locally-true))
+ (assert (equal allout-tests-locally-true t))
+ (assert (not (default-boundp 'allout-tests-locally-true))))
+
+ ;; ensure that last of multiple resumptions holds, for various scopes.
+ (with-temp-buffer
+ (allout-tests-obliterate-variable 'allout-tests-globally-unbound)
+ (allout-tests-obliterate-variable 'allout-tests-globally-true)
+ (setq allout-tests-globally-true t)
+ (allout-tests-obliterate-variable 'allout-tests-locally-true)
+ (set (make-local-variable 'allout-tests-locally-true) t)
+ (allout-add-resumptions '(allout-tests-globally-unbound t)
+ '(allout-tests-globally-true nil)
+ '(allout-tests-locally-true nil))
+ (allout-add-resumptions '(allout-tests-globally-unbound 2)
+ '(allout-tests-globally-true 3)
+ '(allout-tests-locally-true 4))
+ ;; reestablish many of the basic conditions are maintained after re-add:
+ (assert (not (default-boundp 'allout-tests-globally-unbound)))
+ (assert (local-variable-p 'allout-tests-globally-unbound))
+ (assert (equal allout-tests-globally-unbound 2))
+ (assert (default-boundp 'allout-tests-globally-true))
+ (assert (local-variable-p 'allout-tests-globally-true))
+ (assert (equal allout-tests-globally-true 3))
+ (assert (not (default-boundp 'allout-tests-locally-true)))
+ (assert (local-variable-p 'allout-tests-locally-true))
+ (assert (equal allout-tests-locally-true 4))
+ (allout-do-resumptions)
+ (assert (not (local-variable-p 'allout-tests-globally-unbound)))
+ (assert (not (boundp 'allout-tests-globally-unbound)))
+ (assert (not (local-variable-p 'allout-tests-globally-true)))
+ (assert (boundp 'allout-tests-globally-true))
+ (assert (equal allout-tests-globally-true t))
+ (assert (boundp 'allout-tests-locally-true))
+ (assert (local-variable-p 'allout-tests-locally-true))
+ (assert (equal allout-tests-locally-true t))
+ (assert (not (default-boundp 'allout-tests-locally-true))))
+
+ ;; ensure that deliberately unbinding registered variables doesn't foul things
+ (with-temp-buffer
+ (allout-tests-obliterate-variable 'allout-tests-globally-unbound)
+ (allout-tests-obliterate-variable 'allout-tests-globally-true)
+ (setq allout-tests-globally-true t)
+ (allout-tests-obliterate-variable 'allout-tests-locally-true)
+ (set (make-local-variable 'allout-tests-locally-true) t)
+ (allout-add-resumptions '(allout-tests-globally-unbound t)
+ '(allout-tests-globally-true nil)
+ '(allout-tests-locally-true nil))
+ (allout-tests-obliterate-variable 'allout-tests-globally-unbound)
+ (allout-tests-obliterate-variable 'allout-tests-globally-true)
+ (allout-tests-obliterate-variable 'allout-tests-locally-true)
+ (allout-do-resumptions))
+ )
+;;;_ % Run unit tests if `allout-run-unit-tests-after-load' is true:
+(when allout-run-unit-tests-on-load
+ (allout-run-unit-tests))
-;; allout.el ends here
+;;;_ #12 Provide
+(provide 'allout)
+
+;;;_* Local emacs vars.
+;; The following `allout-layout' local variable setting:
+;; - closes all topics from the first topic to just before the third-to-last,
+;; - shows the children of the third to last (config vars)
+;; - and the second to last (code section),
+;; - and closes the last topic (this local-variables section).
+;;Local variables:
+;;allout-layout: (0 : -1 -1 0)
+;;End:
+
+;; arch-tag: cf38fbc3-c044-450f-8bff-afed8ba5681c
+;;; allout.el ends here