;;; allout.el --- extensive outline mode for use alone and with other modes
-;; Copyright (C) 1992, 1993, 1994, 2001, 2002 Free Software Foundation, Inc.
+;; Copyright (C) 1992, 1993, 1994, 2001, 2002, 2003, 2004,
+;; 2005, 2006 Free Software Foundation, Inc.
-;; Author: Ken Manheimer <klm@python.org>
-;; Maintainer: Ken Manheimer <klm@python.org>
+;; 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 1.39 2003/02/04 11:00:03 lektu Exp $||
-;; Keywords: outlines mode wp languages
+;; Version: 2.2.1
+;; Keywords: outlines wp languages
;; This file is part of GNU Emacs.
;; 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, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
-;; Allout outline mode provides extensive outline formatting and
-;; and manipulation beyond standard emacs outline mode. It provides
-;; for structured editing of outlines, as well as navigation and
-;; exposure. It also provides for syntax-sensitive text like
-;; programming languages. (For an example, see the allout code
-;; itself, which is organized in ;; an outline framework.)
+;; Allout outline minor mode provides extensive outline formatting and
+;; and manipulation beyond standard emacs outline mode. Some features:
;;
-;; In addition to outline navigation and exposure, allout includes:
-;;
-;; - topic-oriented repositioning, cut, and paste
-;; - integral outline exposure-layout
-;; - incremental search with dynamic exposure and reconcealment of hidden text
-;; - automatic topic-number maintenance
+;; - 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-current-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.)
+;; 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.
+;;
+;; and more.
;;
-;; and many other features.
+;; See the `allout-mode' function's docstring for an introduction to the
+;; mode. The 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 function `allout-init'
+;; the features, and see the docstring of the variable `allout-init'
;; for instructions on priming your emacs session for automatic
-;; activation of `allout-mode'.
+;; activation of allout-mode.
;;
;; See the docstring of the variables `allout-layout' and
;; `allout-auto-activation' for details on automatic activation of
-;; allout `allout-mode' as a minor mode. (It has changed since allout
+;; `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-current-buffer' to give it a whirl.
-;; Ken Manheimer klm@python.org
+;; ken manheimer (ken dot manheimer at gmail dot com)
;;; Code:
-;;;_* Provide
-(provide 'allout)
+;;;_* Dependency autoloads
+(require 'overlay)
+(eval-when-compile (progn (require 'pgg)
+ (require 'pgg-gpg)
+ (require 'overlay)
+ ))
;;;_* USER CUSTOMIZATION VARIABLES:
+
+;;;_ > defgroup allout
(defgroup allout nil
"Extensive outline mode for use alone and with other modes."
:prefix "allout-"
- :group 'editing)
+ :group 'outlines)
;;;_ + Layout, Mode, and Topic Header Configuration
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.
+With value t, auto-mode-activation and auto-layout are enabled.
\(This also depends on `allout-find-file-hook' being installed in
-`find-file-hooks', which is also done by `allout-init'.)
+`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 `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 `allout-init' for the proper interface to
(const :tag "Mode only" "activate")
(const :tag "Off" nil))
:group 'allout)
-;;;_ = allout-layout
-(defvar allout-layout nil
- "*Layout specification and provisional mode trigger for allout outlines.
-
-Buffer-specific.
+;;;_ = 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)
-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 it.
-
-See the docstring for `allout-init' for details on setting up for
-auto-mode-activation, and for `allout-expose-topic' for the format of
-the layout specification.
-
-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 Emacs Lisp file:
-
-;;;Local variables:
-;;;allout-layout: \(0 : -1 -1 0)
-;;;End:
+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.
-will, modulo the above-mentioned conditions, cause the mode to be
-activated when the file is visited, followed by the equivalent of
-`\(allout-expose-topic 0 : -1 -1 0)'. \(This is the layout used for
-the allout.el, itself.)
+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.")
-(make-variable-buffer-local 'allout-layout)
+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
:type 'boolean
:group 'allout)
(make-variable-buffer-local 'allout-show-bodies)
+;;;###autoload
+(put 'allout-show-bodies 'safe-local-variable
+ (lambda (x) (member x '(t nil))))
;;;_ = allout-header-prefix
(defcustom allout-header-prefix "."
: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.
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'
+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 ".:,;"
+(defcustom allout-plain-bullets-string ".,"
"*The bullets normally used in outline topic prefixes.
See `allout-distinctive-bullets-string' for the other kind of
: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@$~_\\"
+(defcustom allout-distinctive-bullets-string "*+-=>()[{}&!?#%\"X@$~_\\:;^"
"*Persistent outline header bullets used to distinguish special topics.
These bullets are used to distinguish topics from the run-of-the-mill
`?' question topics
`\(' parenthetic comment \(with a matching close paren inside)
`[' meta-note \(with a matching close ] inside)
- `\"' a quote
+ `\"' a quotation
`=' value settings
`~' \"more or less\"
+ `^' see above
-... just for example. (`#' typically has a special meaning to the
-software, according to the value of `allout-numbered-bullet'.)
+ ... 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.
: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
String values are used as they stand.
-Value `t' means to first check for assoc value in `allout-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.)
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 \(`.').
+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
(const allout-mode-leaders)
(const comment-start))
:group 'allout)
+;;;###autoload
+(put 'allout-use-mode-specific-leader 'safe-local-variable
+ (lambda (x) (or (member x '(t nil)) (stringp x))))
;;;_ = allout-mode-leaders
(defvar allout-mode-leaders '()
"Specific allout-prefix leading strings per major modes.
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."
:type 'boolean
:group 'allout)
(make-variable-buffer-local 'allout-old-style-prefixes)
+;;;###autoload
+(put 'allout-old-style-prefixes 'safe-local-variable
+ (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.
:type 'boolean
:group 'allout)
(make-variable-buffer-local 'allout-stylish-prefixes)
+;;;###autoload
+(put 'allout-stylish-prefixes 'safe-local-variable
+ (lambda (x) (member x '(t nil))))
;;;_ = allout-numbered-bullet
(defcustom allout-numbered-bullet "#"
:type '(choice (const nil) string)
:group 'allout)
(make-variable-buffer-local 'allout-numbered-bullet)
+;;;###autoload
+(put 'allout-numbered-bullet 'safe-local-variable
+ (lambda (x) (or (not x) (stringp 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
+ (lambda (x) (or (not x) (stringp x))))
;;;_ = allout-presentation-padding
(defcustom allout-presentation-padding 2
"*Presentation-format white-space padding factor, for greater indent."
: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
:type 'string
:group 'allout)
;;;_ - allout-title
-(defcustom allout-title '(or buffer-file-name (current-buffer-name))
+(defcustom allout-title '(or buffer-file-name (buffer-name))
"*Expression to be evaluated to determine the title for LaTeX
formatted copy."
:type 'sexp
: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)
+
;;;_ + Miscellaneous customization
;;;_ = allout-command-prefix
-(defcustom allout-command-prefix "\C-c"
- "*Key sequence to be used as prefix for outline mode command key bindings."
+(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)
("\C-f" allout-forward-current-level)
("\C-b" allout-backward-current-level)
("\C-a" allout-beginning-of-current-entry)
- ("\C-e" allout-end-of-current-entry)
+ ("\C-e" allout-end-of-entry)
; Exposure commands:
("\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:
(" " allout-open-sibtopic)
("." allout-open-subtopic)
("=t" allout-latexify-exposed)
("=p" allout-flatten-exposed-to-buffer)))
-;;;_ = allout-isearch-dynamic-expose
-(defcustom allout-isearch-dynamic-expose t
- "*Non-nil enable dynamic exposure of hidden incremental-search
-targets as they're encountered."
- :type 'boolean
- :group 'allout)
-(make-variable-buffer-local 'allout-isearch-dynamic-expose)
-
;;;_ = 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.
-
-\[This feature no longer depends in any way on the `filladapt.el'
-lisp-archive package.\]"
+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
+ (lambda (x) (member x '(t nil))))
;;;_ = allout-reindent-bodies
(defcustom allout-reindent-bodies (if allout-use-hanging-indents
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."
:type '(choice (const nil) (const t) (const text) (const force))
:group 'allout)
(make-variable-buffer-local 'allout-reindent-bodies)
+;;;###autoload
+(put 'allout-reindent-bodies 'safe-local-variable
+ (lambda (x) (member x '(nil t text force))))
-;;;_ = allout-inhibit-protection
-(defcustom allout-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 `allout-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
;;;_ = allout-version
-(defvar allout-version
- (let ((rcs-rev "$Revision: 1.39 $"))
- (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)")
+(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."
(if here (insert msg))
(message "%s" msg)
msg))
+;;;_ : 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) (integerp x)
+ (member x '(: * + -)))))
+
;;;_ : Topic header format
;;;_ = allout-regexp
(defvar allout-regexp ""
(defvar allout-line-boundary-regexp ()
"`allout-regexp' with outline style beginning-of-line anchor.
-\(Ie, C-j, *or* C-m, for prefixes of hidden topics). This is properly
-set when `allout-regexp' is produced by `set-allout-regexp', so
-that (match-beginning 2) and (match-end 2) delimit the prefix.")
+This is properly set when `allout-regexp' is produced by
+`set-allout-regexp', so that (match-beginning 2) and (match-end
+2) delimit the prefix.")
(make-variable-buffer-local 'allout-line-boundary-regexp)
;;;_ = allout-bob-regexp
(defvar allout-bob-regexp ()
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))
allout-primary-bullet
"+\\|\^l"))
(setq allout-line-boundary-regexp
- (concat "\\([\n\r]\\)\\(" allout-regexp "\\)"))
+ (concat "\\(\n\\)\\(" allout-regexp "\\)"))
(setq allout-bob-regexp
(concat "\\(\\`\\)\\(" allout-regexp "\\)"))
)
(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.
+ "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 allout-keybindings-list for format of binding list."
map))
;;;_ = allout-prior-bindings - being deprecated.
(defvar allout-prior-bindings nil
- "Variable for use in V18, with `allout-added-bindings', for
+ "Variable for use in V18, with allout-added-bindings, for
resurrecting, on mode deactivation, bindings that existed before
activation. Being deprecated.")
;;;_ = allout-added-bindings - being deprecated
(defvar allout-added-bindings nil
- "Variable for use in V18, with `allout-prior-bindings', for
+ "Variable for use in V18, with allout-prior-bindings, for
resurrecting, on mode deactivation, bindings that existed before
activation. Being deprecated.")
;;;_ : 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
["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]))
+ ["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."
"----"
["Beginning of Entry"
allout-beginning-of-current-entry t]
- ["End of Entry" allout-end-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
First arg is NAME of variable affected. Optional second arg is list
containing allout-mode-specific VALUE to be imposed on named
-variable, and to be registered. (It's a list so you can specify
+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
(setq allout-mode-prior-settings rebuild)))))
)
;;;_ : Mode-specific incidentals
-;;;_ = allout-during-write-cue nil
-(defvar allout-during-write-cue nil
- "Used to inhibit outline change-protection during file write.
-
-See also `allout-post-command-business', `allout-write-file-hook',
-`allout-before-change-protect', and `allout-post-command-business'
-functions.")
-;;;_ = allout-pre-was-isearching nil
-(defvar allout-pre-was-isearching nil
- "Cue for isearch-dynamic-exposure mechanism, implemented in
-allout-pre- and -post-command-hooks.")
-(make-variable-buffer-local 'allout-pre-was-isearching)
-;;;_ = allout-isearch-prior-pos nil
-(defvar allout-isearch-prior-pos nil
- "Cue for isearch-dynamic-exposure tracking, used by allout-isearch-expose.")
-(make-variable-buffer-local 'allout-isearch-prior-pos)
-;;;_ = allout-isearch-did-quit
-(defvar allout-isearch-did-quit nil
- "Distinguishes isearch conclusion and cancellation.
-
-Maintained by `allout-isearch-abort' \(which is wrapped around the real
-isearch-abort), and monitored by `allout-isearch-expose' for action.")
-(make-variable-buffer-local 'allout-isearch-did-quit)
-;;;_ = allout-override-protect nil
-(defvar allout-override-protect nil
- "Used in `allout-mode' for regulate of concealed-text protection mechanism.
-
-Allout outline mode regulates alteration of concealed text to protect
-against inadvertent, 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 'allout-override-protect)
;;;_ > allout-unprotected (expr)
(defmacro allout-unprotected (expr)
- "Evaluate EXPRESSION with `allout-override-protect' let-bound `t'."
- `(let ((allout-override-protect t))
+ "Enable internal outline operations to alter invisible text."
+ `(let ((inhibit-read-only t))
,expr))
-;;;_ = allout-undo-aggregation
-(defvar allout-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-functions and undo interact.")
-(make-variable-buffer-local 'allout-undo-aggregation)
+;;;_ = allout-mode-hook
+(defvar allout-mode-hook nil
+ "*Hook that's run when allout mode starts.")
+;;;_ = allout-overlay-category
+(defvar allout-overlay-category nil
+ "Symbol for use in allout invisible-text overlays as the category.")
+;;;_ = allout-view-change-hook
+(defvar allout-view-change-hook nil
+ "*Hook that's run after allout outline visibility changes.")
+
+;;;_ = 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 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 `allout-mode' function
to track repeats.")
-;;;_ > allout-write-file-hook ()
-(defun allout-write-file-hook ()
- "In `allout-mode', run as a `local-write-file-hooks' activity.
-
-Currently just sets `allout-during-write-cue', so outline change-protection
-knows to keep inactive during file write."
- (setq allout-during-write-cue t)
- nil)
-
-;;;_ #2 Mode activation
-;;;_ = allout-mode
-(defvar allout-mode () "Allout outline mode minor-mode flag.")
-(make-variable-buffer-local 'allout-mode)
-;;;_ > allout-mode-p ()
+;;;_ = 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-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))
+ )
+
+;;;_ #2 Mode activation
;;;_ = allout-explicitly-deactivated
(defvar allout-explicitly-deactivated nil
- "Non-nil if `allout-mode' was last deliberately deactivated.
+ "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)
-;;;###autoload
(defun allout-init (&optional mode)
"Prime `allout-mode' to enable/disable auto-activation, wrt `allout-layout'.
- 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 `allout-layout' variable. (See `allout-layout' and
`allout-expose-topic' docstrings for more details on auto layout).
-`allout-init' works by setting up (or removing)
-`allout-find-file-hook' in `find-file-hooks', and giving
-`allout-auto-activation' a suitable setting.
+`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)
\(allout-init t)"
(let
;; convenience aliases, for consistent ref to respective vars:
((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 (memq hook find-file-hooks)
- ;; Just punt and use the reports from each of the modes:
- (allout-init (symbol-value curr-mode))
- (allout-init nil)
- (message "Allout outline mode auto-activation inhibited.")))
- (t (add-hook 'find-file-hooks hook)
+ (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:
+ (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
((message
"Outline mode auto-activation and -layout enabled.")
'full)))))))
-
;;;_ > allout-setup-menubar ()
(defun allout-setup-menubar ()
"Populate the current buffer's menubar with `allout-mode' stuff."
(setq cur (car menus)
menus (cdr menus))
(easy-menu-add cur))))
+;;;_ > allout-set-overlay-category
+(defun allout-set-overlay-category ()
+ "Set the properties of the allout invisible-text overlay."
+ (setplist 'allout-overlay-category nil)
+ (put 'allout-overlay-category 'invisible 'allout)
+ (put 'allout-overlay-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-overlay-category 'isearch-open-invisible
+ 'allout-isearch-end-handler)
+ (if (featurep 'xemacs)
+ (put 'allout-overlay-category 'start-open t)
+ (put 'allout-overlay-category 'insert-in-front-hooks
+ '(allout-overlay-insert-in-front-handler)))
+ (if (featurep 'xemacs)
+ (progn (make-variable-buffer-local 'before-change-functions)
+ (add-hook 'before-change-functions
+ 'allout-before-change-handler))
+ (put 'allout-overlay-category 'modification-hooks
+ '(allout-overlay-interior-modification-handler))))
;;;_ > allout-mode (&optional toggle)
;;;_ : Defun:
+;;;###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 to re-initialize iff arg is positive num or
symbol. Allout outline mode always runs as a minor mode.
In addition to outline navigation and exposure, allout includes:
- - topic-oriented repositioning, cut, and paste
+ - 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.)
Below is a description of the bindings, and then explanation of
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 variable `allout-init' for instructions on
+the docstring of the function `allout-init' for instructions on
priming your emacs session for automatic activation of `allout-mode'.
Navigation: Exposure Control:
---------- ----------------
-C-c C-n allout-next-visible-heading | C-c C-h allout-hide-current-subtree
-C-c C-p allout-previous-visible-heading | C-c C-i allout-show-children
-C-c C-u allout-up-current-level | C-c C-s allout-show-current-subtree
-C-c C-f allout-forward-current-level | C-c C-o allout-show-current-entry
-C-c C-b allout-backward-current-level | ^U C-c C-s allout-show-all
-C-c C-e allout-end-of-current-entry | allout-hide-current-leaves
-C-c C-a allout-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> allout-open-sibtopic Create a new sibling after current topic.
-C-c . allout-open-subtopic ... an offspring of current topic.
-C-c , allout-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 > allout-shift-in Shift current topic and all offspring deeper.
-C-c < allout-shift-out ... less deep.
-C-c<CR> allout-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 allout-rebullet-current-heading Prompt for alternate bullet for
- current topic.
-C-c # allout-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 allout-kill-topic Kill current topic, including offspring.
-C-k allout-kill-line Like kill-line, but reconciles numbering, etc.
-C-y allout-yank Yank, adjusting depth of yanked topic to
+\\[allout-kill-topic] allout-kill-topic Kill current topic, including offspring.
+\\[allout-kill-line] allout-kill-line Like kill-line, but reconciles numbering, etc.
+\\[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 allout-yank-pop Is to allout-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:
-------------
M-x outlineify-sticky Activate outline mode for current buffer,
and establish a default file-var setting
for `allout-layout'.
-C-c C-SPC allout-mark-topic
-C-c = c allout-copy-exposed-to-buffer
+\\[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 - \"*XXX exposed*\".
-C-c = p allout-flatten-exposed-to-buffer
+ 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.
-ESC ESC (allout-init t) Setup emacs session for outline mode
+\\[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.
-\\<allout-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 allout-mode keymap control chars. For example, \"f\"
-would invoke the command typically bound to \"C-c C-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 `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 \\[allout-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
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.
+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.
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 `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.
CONCEALED:
Topics and entry text whose display is inhibited. Contiguous
units of concealed text is represented by `...' ellipses.
- (Ref the `selective-display' var.)
Concealed topics are effectively collapsed within an ancestor.
CLOSED: A topic whose immediate offspring and body-text is concealed.
(or (and (listp toggle)(car toggle))
toggle)))
; Activation specifically demanded?
- (explicit-activation (or
- ;;
- (and toggle
+ (explicit-activation (and toggle
(or (symbolp toggle)
- (and (natnump toggle)
- (not (zerop toggle)))))))
+ (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
)
;; 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 `allout-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
(progn
(allout-resumptions 'allout-primary-bullet)
(allout-resumptions 'allout-old-style-prefixes)))
- (allout-resumptions 'selective-display)
- (if (and (boundp 'before-change-functions) before-change-functions)
- (allout-resumptions 'before-change-functions))
- (setq local-write-file-hooks
- (delq 'allout-write-file-hook
- local-write-file-hooks))
+ ;;(allout-resumptions 'selective-display)
+ (remove-from-invisibility-spec '(allout . t))
+ (set write-file-hook-var-name
+ (delq 'allout-write-file-hook-handler
+ (symbol-value write-file-hook-var-name)))
+ (setq auto-save-hook
+ (delq 'allout-auto-save-hook-handler
+ auto-save-hook))
(allout-resumptions 'paragraph-start)
(allout-resumptions 'paragraph-separate)
- (allout-resumptions (if (string-match "^18" emacs-version)
- 'auto-fill-hook
- 'auto-fill-function))
+ (allout-resumptions 'auto-fill-function)
+ (allout-resumptions 'normal-auto-fill-function)
(allout-resumptions 'allout-former-auto-filler)
(setq allout-mode nil))
(allout-resumptions 'allout-primary-bullet '("*"))
(allout-resumptions 'allout-old-style-prefixes '(()))))
+ (allout-set-overlay-category) ; Doesn't hurt to redo this.
+
(allout-infer-header-lead)
(allout-infer-body-reindent)
; epoch, minor-mode key bindings:
(setq allout-mode-map
(produce-allout-mode-map allout-keybindings-list))
+ (substitute-key-definition 'beginning-of-line
+ 'move-beginning-of-line
+ allout-mode-map global-map)
+ (substitute-key-definition 'end-of-line
+ 'move-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,
(current-local-map)))
)
- ; selective-display is the
- ; emacs conditional exposure
- ; mechanism:
- (allout-resumptions 'selective-display '(t))
- (if allout-inhibit-protection
- t
- (allout-resumptions 'before-change-functions
- '(allout-before-change-protect)))
+ (add-to-invisibility-spec '(allout . t))
+ (make-local-variable 'line-move-ignore-invisible)
+ (setq line-move-ignore-invisible t)
(add-hook 'pre-command-hook 'allout-pre-command-business)
(add-hook 'post-command-hook 'allout-post-command-business)
- ; Temporarily set by any outline
- ; functions that can be trusted to
- ; deal properly with concealed text.
- (add-hook 'local-write-file-hooks 'allout-write-file-hook)
+ (add-hook 'isearch-mode-end-hook 'allout-isearch-end-handler)
+ (add-hook write-file-hook-var-name 'allout-write-file-hook-handler)
+ (add-hook 'auto-save-hook 'allout-auto-save-hook-handler)
; 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 allout-auto-fill:
- (allout-resumptions 'allout-former-auto-filler (list fill-func))
- ;; Register allout-auto-fill to be used if filling is active:
- (allout-resumptions fill-func-var '(allout-auto-fill)))
+ ;; Register prevailing fill func for use by allout-auto-fill:
+ (allout-resumptions 'allout-former-auto-filler (list auto-fill-function))
+ ;; Register allout-auto-fill to be used if filling is active:
+ (allout-resumptions 'auto-fill-function '(allout-auto-fill))
+ (allout-resumptions 'allout-outside-normal-auto-fill-function
+ (list normal-auto-fill-function))
+ (allout-resumptions 'normal-auto-fill-function '(allout-auto-fill))
;; Paragraphs are broken by topic headlines.
(make-local-variable 'paragraph-start)
(allout-resumptions 'paragraph-start
(if allout-layout
(setq do-layout t))
- (if (and allout-isearch-dynamic-expose
- (not (fboundp 'allout-real-isearch-abort)))
- (allout-enwrap-isearch))
-
(run-hooks 'allout-mode-hook)
(setq allout-mode t))
(allout-infer-body-reindent))
) ; cond
- (if (and do-layout
- allout-auto-activation
- (listp allout-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)
- allout-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 allout-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)))))
+ (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
-;;; XXX released verion doesn't do this?
(defalias 'allout-minor-mode 'allout-mode)
+;;;_ - Position Assessment
+;;;_ > allout-hidden-p (&optional pos)
+(defsubst allout-hidden-p (&optional pos)
+ "Non-nil if the character after point is invisible."
+ (get-char-property (or pos (point)) 'invisible))
+
+;;;_ > 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))
+ (msg "Change within concealed text disallowed.")
+ opened
+ 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 opened t)
+ (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.
+
+This before-change handler is used only where modification-hooks
+overlay property is not supported."
+ (if (not (allout-mode-p))
+ nil
+ (allout-overlay-interior-modification-handler nil 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
Actually, returns prefix beginning point."
(save-excursion
- (beginning-of-line)
+ (allout-beginning-of-current-line)
(and (looking-at allout-regexp)
(allout-prefix-data (match-beginning 0) (match-end 0)))))
;;;_ > allout-on-heading-p ()
(and (save-excursion (beginning-of-line)
(looking-at allout-regexp))
(= (point)(save-excursion (allout-end-of-prefix)(point)))))
-;;;_ > allout-hidden-p ()
-(defmacro allout-hidden-p ()
- "True if point is in hidden text."
- '(save-excursion
- (and (re-search-backward "[\n\r]" () t)
- (= ?\r (following-char)))))
-;;;_ > allout-visible-p ()
-(defmacro allout-visible-p ()
- "True if point is not in hidden text."
- (interactive)
- '(not (allout-hidden-p)))
;;;_ : Location attributes
;;;_ > allout-depth ()
-(defsubst allout-depth ()
- "Like `allout-current-depth', but respects hidden as well as visible topics."
+(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
- (if (allout-goto-prefix)
- (allout-recent-depth)
- (progn
- ;; Oops, no prefix, zero prefix data:
- (allout-prefix-data (point)(point))
- ;; ... and return 0:
- 0))))
+ (let ((start-point (point)))
+ (if (and (allout-goto-prefix)
+ (not (< start-point (point))))
+ (allout-recent-depth)
+ (progn
+ ;; Oops, no prefix, zero prefix data:
+ (allout-prefix-data (point)(point))
+ ;; ... and return 0:
+ 0)))))
;;;_ > allout-current-depth ()
-(defmacro allout-current-depth ()
- "Return nesting depth of visible topic most immediately containing point."
- '(save-excursion
- (if (allout-back-to-current-heading)
- (max 1
- (- allout-recent-prefix-end
- allout-recent-prefix-beginning
- allout-header-subtraction))
- 0)))
+(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."
;;;_ > 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
(allout-back-to-current-heading)
(buffer-substring (- allout-recent-prefix-end 1)
(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
+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..."
rev-sibls)
)
-;;;_ - Navigation macros
+;;;_ - Navigation routines
+;;;_ > allout-beginning-of-current-line ()
+(defun allout-beginning-of-current-line ()
+ "Like beginning of line, but to visible text."
+
+ ;; XXX We would use `(move-beginning-of-line 1)', but it gets
+ ;; stuck on some hidden newlines, eg at column 80, as of GNU Emacs 22.0.50.
+ ;; Conversely, `beginning-of-line' can make no progress in other
+ ;; situations. Both are necessary, in the order used below.
+ (move-beginning-of-line 1)
+ (beginning-of-line)
+ (while (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'.
+ (end-of-line)
+ (while (allout-hidden-p)
+ (end-of-line)
+ (if (allout-hidden-p) (forward-char 1))))
;;;_ > allout-next-heading ()
(defsubst allout-next-heading ()
"Move to the heading for the topic \(possibly invisible) before this one.
(goto-char (or (match-beginning 2)
allout-recent-prefix-beginning))
(or (match-end 2) allout-recent-prefix-end))))
-;;;_ : allout-this-or-next-heading
+;;;_ > 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 allout-next-heading
(goto-char (or (match-beginning 2)
allout-recent-prefix-beginning))
(or (match-end 2) allout-recent-prefix-end))))))
+;;;_ > 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))))
+ 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
depth) for the chart. Subsequent optional args are not for public
use.
-Charts are used to capture outline structure, so that outline altering
+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.
;; 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.
; the original level. Position
; to the end of it:
(progn (and (not (eobp)) (forward-char -1))
- (and (memq (preceding-char) '(?\n ?\r))
- (memq (aref (buffer-substring (max 1 (- (point) 3))
- (point))
- 1)
- '(?\n ?\r))
+ (and (= (preceding-char) ?\n)
+ (= (aref (buffer-substring (max 1 (- (point) 3))
+ (point))
+ 1)
+ ?\n)
(forward-char -1))
(setq allout-recent-end-of-subtree (point))))
(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 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)))
- )
+;; (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
;;;_ > allout-goto-prefix ()
(let (done)
(while (and (not done)
- (re-search-backward "[\n\r]" nil 1))
+ (search-backward "\n" nil 1))
(forward-char 1)
(if (looking-at allout-regexp)
(setq done (allout-prefix-data (match-beginning 0)
(1- (match-end 0))))
;;;_ > allout-back-to-current-heading ()
(defun allout-back-to-current-heading ()
- "Move to heading line of current topic, or beginning if already on the line."
-
- (beginning-of-line)
- (prog1 (or (allout-on-current-heading-p)
- (and (re-search-backward (concat "^\\(" allout-regexp "\\)")
- nil
- 'move)
- (allout-prefix-data (match-beginning 1)(match-end 1))))
- (if (interactive-p) (allout-end-of-prefix))))
+ "Move to heading line of current topic, or beginning if already on the line.
+
+Return value of point, unless we started outside of (before any) topics,
+in which case we return nil."
+
+ (allout-beginning-of-current-line)
+ (if (or (allout-on-current-heading-p)
+ (and (re-search-backward (concat "^\\(" allout-regexp "\\)")
+ nil 'move)
+ (progn (while (allout-hidden-p)
+ (allout-beginning-of-current-line)
+ (if (not (looking-at allout-regexp))
+ (re-search-backward (concat
+ "^\\(" allout-regexp "\\)")
+ nil 'move)))
+ (allout-prefix-data (match-beginning 1)
+ (match-end 1)))))
+ (if (interactive-p)
+ (allout-end-of-prefix)
+ (point))))
;;;_ > allout-back-to-heading ()
(defalias 'allout-back-to-heading 'allout-back-to-current-heading)
-;;;_ > allout-pre-next-preface ()
-(defun allout-pre-next-preface ()
+;;;_ > 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 allout-line-boundary-regexp nil 'move)
(prog1 (goto-char (match-beginning 0))
(allout-prefix-data (match-beginning 2)(match-end 2)))))
-;;;_ > allout-end-of-current-subtree ()
-(defun allout-end-of-current-subtree ()
- "Put point at the end of the last leaf in the currently visible topic."
- (interactive)
- (allout-back-to-current-heading)
+;;;_ > 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))
(let ((level (allout-recent-depth)))
(allout-next-heading)
(while (and (not (eobp))
(> (allout-recent-depth) level))
(allout-next-heading))
(and (not (eobp)) (forward-char -1))
- (and (memq (preceding-char) '(?\n ?\r))
- (memq (aref (buffer-substring (max 1 (- (point) 3)) (point)) 1)
- '(?\n ?\r))
+ (if (and (not include-trailing-blank) (= ?\n (preceding-char)))
(forward-char -1))
(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's body.
+ "When not already there, position point at beginning of current topic header.
If already there, move cursor to bullet for hot-spot operation.
-\(See `allout-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)))
+ (move-beginning-of-line 1)
(allout-end-of-prefix)
(if (and (interactive-p)
(= (point) start-point))
(goto-char (allout-current-bullet-pos)))))
-;;;_ > allout-end-of-current-entry ()
-(defun allout-end-of-current-entry ()
- "Position the point at the end of the current topics' entry."
+;;;_ > 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)
- (allout-show-entry)
- (prog1 (allout-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)
- (forward-line -1)
- (end-of-line))
+ (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
;;;_ > allout-ascend-to-depth (depth)
(allout-back-to-current-heading)
(let ((present-level (allout-recent-depth))
(last-good (point))
- failed
- return)
+ failed)
;; Loop for iterating arg:
(while (and (> (allout-recent-depth) 1)
(> arg 0)
nil))))
;;;_ > allout-previous-sibling (&optional depth backward)
(defun allout-previous-sibling (&optional depth backward)
- "Like `allout-forward-current-level', but backwards & respect invisible topics.
+ "Like `allout-forward-current-level' backwards, respecting invisible topics.
Optional DEPTH specifies depth to traverse, default current depth.
)
;;;_ > allout-snug-back ()
(defun allout-snug-back ()
- "Position cursor at end of previous topic
+ "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 ?\r))))
+ (if (or (bobp) (not (= ?\n (preceding-char))))
nil
- (forward-char -1)
- (if (or (bobp) (not (memq (preceding-char) '(?\n ?\r))))
- (forward-char -1)))
+ (forward-char -1))
(point))
;;;_ > allout-beginning-of-level ()
(defun allout-beginning-of-level ()
(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))))
(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))
+ (prog1 (condition-case nil (or (line-move step) t)
+ (error nil))
+ (allout-beginning-of-current-line))
(not (setq got (looking-at allout-regexp)))))
;; Register this got, it may be the last:
(if got (setq prev got))
Returns resulting position, else nil if none found."
(interactive "p")
(let ((start-depth (allout-current-depth))
- (start-point (point))
(start-arg arg)
(backward (> 0 arg))
last-depth
;;;_ #5 Alteration
;;;_ - Fundamental
-;;;_ > allout-before-change-protect (beg end)
-(defun allout-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-functions', which
-in emacs 19 is run before any change to the buffer.
-
-Any functions which set [`this-command' to `undo', or which set]
-`allout-override-protect' non-nil (as does, eg, allout-flag-chars)
-are exempt from this restriction."
- (if (and (allout-mode-p)
- ; allout-override-protect
- ; set by functions that know what
- ; they're doing, eg outline internals:
- (not allout-override-protect)
- (not allout-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 (allout-hidden-p)
- (and (not (= beg end))
- (goto-char end)
- (allout-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 (allout-hidden-p)
- (allout-show-children))
- (message "Undo!"))
- (let (response
- (rehide-completely (save-excursion (allout-goto-prefix)
- (allout-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
- (allout-goto-prefix)))
- (allout-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
- (allout-hide-current-entry-completely)
- (allout-hide-current-entry)))
- (if (allout-ascend-to-depth (1- (allout-recent-depth)))
- (allout-show-children)
- (allout-show-to-offshoot)))
- ; Prevent:
- (if rehide-completely
- (save-excursion
- (if rehide-place (goto-char rehide-place))
- (allout-hide-current-entry-completely))
- (allout-hide-current-entry))
- (error (concat
- "Change within concealed region prevented.")))))))
- ) ; if
- ) ; defun
;;;_ = allout-post-goto-bullet
(defvar allout-post-goto-bullet nil
"Outline internal var, for `allout-pre-command-business' hot-spot operation.
(defun allout-post-command-business ()
"Outline `post-command-hook' function.
-- Null `allout-override-protect', so it's not left open.
-
- 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-functions' is used."
+- Decrypt topic currently being edited if it was encrypted for a save."
; Apply any external change func:
(if (not (allout-mode-p)) ; In allout-mode.
nil
- (setq allout-override-protect nil)
- (if allout-isearch-dynamic-expose
- (allout-isearch-rectification))
- (if allout-during-write-cue
- ;; Was used by allout-before-change-protect, done with it now:
- (setq allout-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:
- (> allout-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 (boundp 'allout-after-save-decrypt)
+ allout-after-save-decrypt)
+ (allout-after-saves-handler))
+
+ ;; Implement -post-goto-bullet, if set:
(if (and allout-post-goto-bullet
(allout-current-bullet-pos))
(progn (goto-char (allout-current-bullet-pos))
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))
- ;; Shouldn't be invoked if not in allout allout-mode, but just in case:
nil
- ;; Register isearch status:
- (if (and (boundp 'isearch-mode) isearch-mode)
- (setq allout-pre-was-isearching t)
- (setq allout-pre-was-isearching nil))
;; Hot-spot navigation provisions:
(if (and (eq this-command 'self-insert-command)
(eq (point)(allout-current-bullet-pos)))
(let* ((this-key-num (cond
((numberp last-command-char)
last-command-char)
- ;; XXX Only xemacs has characterp.
+ ;; Only xemacs has characterp.
((and (fboundp 'characterp)
- (characterp last-command-char))
- (char-to-int last-command-char))
+ (apply 'characterp
+ (list last-command-char)))
+ (apply 'char-to-int (list last-command-char)))
(t 0)))
mapped-binding)
(if (zerop this-key-num)
this-command mapped-binding)))))))
;;;_ > allout-find-file-hook ()
(defun allout-find-file-hook ()
- "Activate `allout-mode' when `allout-auto-activation' & `allout-layout' are non-nil.
+ "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)))
-;;;_ > allout-isearch-rectification
-(defun allout-isearch-rectification ()
- "Rectify outline exposure before, during, or after isearch.
-
-Called as part of `allout-post-command-business'."
-
- (let ((isearching (and (boundp 'isearch-mode) isearch-mode)))
- (cond ((and isearching (not allout-pre-was-isearching))
- (allout-isearch-expose 'start))
- ((and isearching allout-pre-was-isearching)
- (allout-isearch-expose 'continue))
- ((and (not isearching) allout-pre-was-isearching)
- (allout-isearch-expose 'final))
- ;; Not and wasn't isearching:
- (t (setq allout-isearch-prior-pos nil)
- (setq allout-isearch-did-quit nil)))))
-;;;_ = allout-isearch-was-font-lock
-(defvar allout-isearch-was-font-lock
- (and (boundp 'font-lock-mode) font-lock-mode))
-
-;;;_ > allout-flag-region (from to flag)
-(defmacro allout-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)
- (allout-override-protect t))
- (subst-char-in-region ,from ,to
- (if (= ,flag ?\n) ?\r ?\n)
- ,flag t)))
-
-;;;_ > allout-isearch-expose (mode)
-(defun allout-isearch-expose (mode)
- "Mode is either 'clear, 'start, 'continue, or 'final."
- ;; allout-isearch-prior-pos encodes exposure status of prior pos:
- ;; (pos was-vis header-pos end-pos)
- ;; pos - point of concern
- ;; was-vis - t, else 'topic if entire topic was exposed, 'entry otherwise
- ;; Do reclosure or prior pos, as necessary:
- (if (eq mode 'start)
- (setq allout-isearch-was-font-lock (and (boundp 'font-lock-mode)
- font-lock-mode)
- font-lock-mode nil)
- (if (eq mode 'final)
- (setq font-lock-mode allout-isearch-was-font-lock))
- (if (and allout-isearch-prior-pos
- (listp allout-isearch-prior-pos))
- ;; Conceal prior peek:
- (allout-flag-region (car (cdr allout-isearch-prior-pos))
- (car (cdr (cdr allout-isearch-prior-pos)))
- ?\r)))
- (if (allout-visible-p)
- (setq allout-isearch-prior-pos nil)
- (if (not (eq mode 'final))
- (setq allout-isearch-prior-pos (cons (point) (allout-show-entry)))
- (if allout-isearch-did-quit
- nil
- (setq allout-isearch-prior-pos nil)
- (allout-show-children))))
- (setq allout-isearch-did-quit nil))
-;;;_ > allout-enwrap-isearch ()
-(defun allout-enwrap-isearch ()
- "Impose `allout-mode' isearch-abort wrapper for dynamic exposure in isearch.
-
-The function checks to ensure that the rebinding is done only once."
-
- (add-hook 'isearch-mode-end-hook 'allout-isearch-rectification)
- (if (fboundp 'allout-real-isearch-abort)
- ;;
- nil
- ; Ensure load of isearch-mode:
- (if (or (and (fboundp 'isearch-mode)
- (fboundp 'isearch-abort))
- (condition-case error
- (load-library "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 allout-isearch-dynamic-expose 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:
- (fset 'allout-real-isearch-abort (symbol-function 'isearch-abort))
- (fset 'isearch-abort 'allout-isearch-abort)))))
-;;;_ > allout-isearch-abort ()
-(defun allout-isearch-abort ()
- "Wrapper for `allout-real-isearch-abort' \(which see), to register
-actual quits."
- (interactive)
- (setq allout-isearch-did-quit nil)
- (condition-case what
- (allout-real-isearch-abort)
- ('quit (setq allout-isearch-did-quit t)
- (signal 'quit nil))))
-
-;;; Prevent unnecessary font-lock while isearching!
-(defvar isearch-was-font-locking nil)
-(defun isearch-inhibit-font-lock ()
- "Inhibit `font-lock-mode' while isearching - for use on `isearch-mode-hook'."
- (if (and (allout-mode-p) (boundp 'font-lock-mode) font-lock-mode)
- (setq isearch-was-font-locking t
- font-lock-mode nil)))
-(add-hook 'isearch-mode-hook 'isearch-inhibit-font-lock)
-(defun isearch-reenable-font-lock ()
- "Reenable font-lock after isearching - for use on isearch-mode-end-hook."
- (if (and (boundp 'font-lock-mode) font-lock-mode)
- (if (and (allout-mode-p) isearch-was-font-locking)
- (setq isearch-was-font-locking nil
- font-lock-mode t))))
-(add-hook 'isearch-mode-end-hook 'isearch-reenable-font-lock)
;;;_ - Topic Format Assessment
;;;_ > allout-solicit-alternate-bullet (depth &optional current-bullet)
)
;;;_ > allout-distinctive-bullet (bullet)
(defun allout-distinctive-bullet (bullet)
- "True if bullet is one of those on `allout-distinctive-bullets-string'."
+ "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)
(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
+ (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."
((allout-sibling-index))))))
)
)
-;;;_ > allout-open-topic (relative-depth &optional before use_sib_bullet)
-(defun allout-open-topic (relative-depth &optional before use_sib_bullet)
+;;;_ > 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 USE_SIB_BULLET is true, use the bullet of the prior sibling.
+If OFFER-RECENT-BULLET is true, offer to use the bullet of the prior sibling.
Nuances:
having to go to its preceding sibling, and then open forward
from there."
+ (allout-beginning-of-current-line)
(let* ((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, below
- ref-bullet ; 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)
(allout-ascend-to-depth depth))
(save-excursion
;; succeeded by a blank line?
(allout-end-of-current-subtree)
- (bolp)))
+ (looking-at "\n\n")))
(and (= ref-depth 1)
(or before
(= depth 1)
(save-excursion
;; Don't already have following
;; vertical padding:
- (not (allout-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 (allout-back-to-current-heading)
(setq doing-beginning (bobp))
(if (not (bobp))
(allout-previous-heading)))
(if (and before (bobp))
- (allout-unprotected (open-line 1))))
+ (open-line 1)))
(if (<= relative-depth 0)
;; Not going inwards, don't snug up:
(if doing-beginning
- (allout-unprotected (open-line (if dbl-space 2 1)))
+ (if (not dbl-space)
+ (open-line 1)
+ (open-line 2))
(if before
(progn (end-of-line)
- (allout-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 "^$"))
- (allout-unprotected (open-line 1))))
- (allout-end-of-current-subtree)))
- ;; Going inwards - double-space if first offspring is,
- ;; otherwise snug up.
- (end-of-line) ; So we skip any concealed progeny.
- (allout-pre-next-preface)
+ (open-line 1)))
+ (allout-end-of-current-subtree)
+ (if (looking-at "\n\n") (forward-char 1))))
+ ;; Going inwards - double-space if first offspring is
+ ;; double-spaced, otherwise snug up.
+ (allout-end-of-entry)
+ (if (eobp)
+ (newline 1)
+ (line-move 1))
+ (allout-beginning-of-current-line)
+ (backward-char 1)
(if (bolp)
;; Blank lines between current header body and next
;; header - get to last substantive (non-white-space)
;; line in body:
- (re-search-backward "[^ \t\n]" nil t))
+ (progn (setq dbl-space t)
+ (re-search-backward "[^ \t\n]" nil t)))
+ (if (looking-at "\n\n")
+ (setq dbl-space t))
(if (save-excursion
(allout-next-heading)
- (if (> (allout-recent-depth) ref-depth)
- ;; This is an offspring.
- (progn (forward-line -1)
- (looking-at "^\\s-*$"))))
+ (when (> (allout-recent-depth) ref-depth)
+ ;; This is an offspring.
+ (forward-line -1)
+ (looking-at "^\\s-*$")))
(progn (forward-line 1)
- (allout-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))
- (allout-unprotected (open-line 1))
- (if (> depth ref-depth)
- (allout-unprotected (newline 1))
+ (open-line 1)
+ (if (and (not dbl-space) (> depth ref-depth))
+ (newline 1)
(if dbl-space
- (allout-unprotected (open-line 1))
+ (open-line 1)
(if (not before)
- (allout-unprotected (newline 1))))))
- (if dbl-space
- (allout-unprotected (newline 1)))
+ (newline 1)))))
+ (if (and dbl-space (not (> relative-depth 0)))
+ (newline 1))
(if (and (not (eobp))
(not (bolp)))
(forward-char 1))))
))
- (insert (concat (allout-make-topic-prefix opening-numbered
- t
- depth)
- " "))
-
- ;;(if doing-beginning (save-excursion (newline (if dbl-space 2 1))))
-
-
- (allout-rebullet-heading (and use_sib_bullet ref-bullet);;; solicit
- depth ;;; depth
- nil ;;; number-control
- nil ;;; index
- t) (end-of-line)
+ (insert (concat (allout-make-topic-prefix opening-numbered t depth)
+ " "))
+
+ (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)
)
)
-;;;_ . open-topic contingencies
-;;;_ ; base topic - one from which open was issued
-;;;_ , beginning char
-;;;_ , amount of space before will be used, unless opening 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
;;;_ > 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")
- (allout-open-topic 1 (> 0 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.
Negative universal arg means to place the new topic prior to the current
one."
(interactive "p")
- (allout-open-topic 0 (> 0 arg) (< 1 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.
topic prior to the current one."
(interactive "p")
- (allout-open-topic -1 (> 0 arg)))
+ (allout-open-topic -1 (> 0 arg) (< 1 arg)))
;;;_ - Outline Alteration
;;;_ : Topic Modification
;; 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)
- (do-auto-fill))))
+ (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.
+ "Reindent body lines which were indented at OLD-DEPTH to NEW-DEPTH.
Optional arg NUMBER indicates numbering is being added, and it must
be accommodated.
(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:
(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
(setq old-indent-begin (match-beginning 1)
old-indent-end (match-end 1))
(not (looking-at allout-regexp)))
- (if (> 0 (setq excess (- (current-column)
- old-margin)))
+ (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)))))))))
+ (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."
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 `allout-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.
; Put in new prefix:
(allout-unprotected (insert new-prefix))
- ;; Reindent the body if elected and margin changed:
+ ;; Reindent the body if elected, margin changed, and not encrypted body:
(if (and allout-reindent-bodies
- (not (= new-depth current-depth)))
+ (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
) ; defun
;;;_ > allout-rebullet-topic (arg)
(defun allout-rebullet-topic (arg)
- "Like `allout-rebullet-topic-grunt', but start from topic visible at point.
+ "Rebullet the visible topic containing point and all contained subtopics.
Descends into invisible as well as visible topics, however.
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))
starting-point
index
do-successors)
+ "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 `allout-rebullet-heading' for rebulleting
-behavior.
+See `allout-rebullet-heading' for rebulleting behavior.
All arguments are optional.
(setq more (allout-next-sibling depth nil))))))
;;;_ > allout-shift-in (arg)
(defun allout-shift-in (arg)
- "Increase depth of current heading and any topics collapsed within it."
+ "Increase depth of current heading and any topics collapsed within it.
+
+We disallow shifts that would result in the topic having a depth more than
+one level greater than the immediately previous topic, to avoid containment
+discontinuity. The first topic in the file can be adjusted to any positive
+depth, however."
(interactive "p")
+ (if (> arg 0)
+ (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)
+ (if (< (point) start-point)
+ (allout-recent-depth)
+ 0))))
+ (if (and (> predecessor-depth 0)
+ (> (+ current-depth arg)
+ (1+ predecessor-depth)))
+ (error (concat "Disallowed shift deeper than"
+ " containing topic's children.")))))))
(allout-rebullet-topic arg))
;;;_ > allout-shift-out (arg)
(defun allout-shift-out (arg)
- "Decrease depth of current heading and any topics collapsed within it."
+ "Decrease depth of current heading and any topics collapsed within it.
+
+We disallow shifts that would result in the topic having a depth more than
+one level greater than the immediately previous topic, to avoid containment
+discontinuity. The first topic in the file can be adjusted to any positive
+depth, however."
(interactive "p")
+ (if (< arg 0)
+ (allout-shift-in (* arg -1)))
(allout-rebullet-topic (* arg -1)))
;;;_ : Surgery (kill-ring) functions with special provisions for outlines:
;;;_ > allout-kill-line (&optional arg)
"Kill line, adjusting subsequent lines suitably for outline mode."
(interactive "*P")
- (if (not (and (allout-mode-p) ; active outline mode,
- allout-numbered-bullet ; numbers may need adjustment,
- (bolp) ; may be clipping topic head,
- (looking-at allout-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 (allout-depth)))
- ; Do the kill:
- (kill-line arg)
+ (let* ((beg (point))
+ (beg-hidden (allout-hidden-p))
+ (end-hidden (save-excursion (allout-end-of-current-line)
+ (allout-hidden-p)))
+ (depth (allout-depth))
+ (collapsed (allout-current-topic-collapsed-p)))
+
+ (if collapsed
+ (put-text-property beg (1+ beg) 'allout-was-collapsed t)
+ (remove-text-properties beg (1+ beg) '(allout-was-collapsed t)))
+
+ (if (and (not beg-hidden) (not end-hidden))
+ (allout-unprotected (kill-line arg))
+ (kill-line arg))
; Provide some feedback:
(sit-for 0)
- (save-excursion
- ; Start with the topic
- ; following killed line:
- (if (not (looking-at allout-regexp))
- (allout-next-heading))
- (allout-renumber-to-depth depth)))))
+ (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))))))
;;;_ > 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.
+
+Completely collapsed topics are marked as such, for re-collapse
+when yank with allout-yank into an outline as a heading."
;; 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
+ ;; after the region is deleted, 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.
+ ;; a lag *after* a kill has been performed.
(interactive)
- (let* ((beg (prog1 (allout-back-to-current-heading)(beginning-of-line)))
+ (let* ((collapsed (allout-current-topic-collapsed-p))
+ (beg (prog1 (allout-back-to-current-heading) (beginning-of-line)))
(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 (allout-next-heading)
- (>= (allout-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))
+ (if collapsed
+ (put-text-property beg (1+ beg) 'allout-was-collapsed t)
+ (remove-text-properties beg (1+ beg) '(allout-was-collapsed t)))
+ (allout-unprotected (kill-region beg (point)))
(sit-for 0)
(save-excursion
(allout-renumber-to-depth depth))))
;;;_ > allout-yank-processing ()
(defun allout-yank-processing (&optional arg)
- "Incidental outline specific business to be done just after text yanks.
+ "Incidental allout-specific business to be done just after text yanks.
Does depth adjustment of yanked topics, when:
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, not outline specific yanks."
+however, are left exactly like normal, non-allout-specific yanks."
(interactive "*P")
; Get to beginning, leaving
; region around subject:
- (if (< (my-mark-marker t) (point))
+ (if (< (allout-mark-marker t) (point))
(exchange-point-and-mark))
(let* ((subj-beg (point))
- (subj-end (my-mark-marker t))
+ (into-bol (bolp))
+ (subj-end (allout-mark-marker t))
+ (was-collapsed (get-text-property subj-beg 'allout-was-collapsed))
;; 'resituate' if yanking an entire topic into topic header:
(resituate (and (allout-e-o-prefix-p)
(looking-at (concat "\\(" allout-regexp "\\)"))
;; `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 allout-regexp)))))
+ (and into-bol (looking-at allout-regexp)))))
(if resituate
; The yanked stuff is a topic:
(let* ((prefix-len (- (match-end 1) subj-beg))
(allout-prefix-data (match-beginning 0)
(match-end 0)))
(allout-recent-depth))))
- done
(more t))
(setq rectify-numbering allout-numbered-bullet)
(if adjust-to-depth
(progn
(beginning-of-line)
(delete-region (point) subj-beg)
- (set-marker (my-mark-marker t) subj-end)
+ (set-marker (allout-mark-marker t) subj-end)
(goto-char subj-beg)
(allout-end-of-prefix))
; Delete base subj prefix,
nil ;;; index
t))
(message ""))))
+ (when (and (or into-bol resituate) was-collapsed)
+ (remove-text-properties subj-beg (1+ subj-beg) '(allout-was-collapsed))
+ (allout-hide-current-subtree))
(if (not resituate)
(exchange-point-and-mark))))
;;;_ > allout-yank (&optional arg)
Numbering of yanked topics, and the successive siblings at the depth
into which they're being yanked, is adjusted.
-`allout-yank-pop' works with `allout-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 (allout-mode-p)
- (allout-yank-processing)))
+ (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.
(interactive)
(if (not allout-file-xref-bullet)
(error
- "outline cross references disabled - no `allout-file-xref-bullet'")
+ "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'"
+ (error "Current heading lacks cross-reference bullet `%s'"
allout-file-xref-bullet)
(let (file-name)
(save-excursion
(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
;;;_ - Fundamental
+;;;_ > allout-flag-region (from to flag)
+(defun allout-flag-region (from to flag)
+ "Conceal text from FROM to TO if FLAG is non-nil, else reveal it.
+
+Text is shown if flag is nil and hidden otherwise."
+ ;; We use outline invisibility spec.
+ (remove-overlays from to 'category 'allout-overlay-category)
+ (when flag
+ (let ((o (make-overlay from to)))
+ (overlay-put o 'category 'allout-overlay-category)
+ (when (featurep 'xemacs)
+ (let ((props (symbol-plist 'allout-overlay-category)))
+ (while props
+ (overlay-put o (pop props) (pop props)))))))
+ (run-hooks 'allout-view-change-hook))
;;;_ > allout-flag-current-subtree (flag)
(defun allout-flag-current-subtree (flag)
- "Hide or show subtree of currently-visible topic.
-
-See `allout-flag-region' for more details."
+ "Conceal currently-visible topic's subtree if FLAG non-nil, else reveal it."
(save-excursion
(allout-back-to-current-heading)
+ (end-of-line)
(allout-flag-region (point)
- (progn (allout-end-of-current-subtree) (1- (point)))
- flag)))
+ ;; 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
-;;;_ > allout-show-entry ()
-(defun allout-show-entry ()
+;;;_ > allout-show-entry (&optional inclusive)
+(defun allout-show-entry (&optional inclusive)
"Like `allout-show-current-entry', reveals entries nested 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. `allout-hide-current-entry-completely' or `allout-show-to-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
- (let ((at (point))
- beg end)
+ (let (beg end)
(allout-goto-prefix)
- (setq beg (if (= (preceding-char) ?\r) (1- (point)) (point)))
- (re-search-forward "[\n\r]" nil t)
- (setq end (1- (if (< at (point))
- ;; We're on topic head line - show only it:
- (point)
- ;; or we're in body - include it:
- (max beg (or (allout-pre-next-preface) (point))))))
- (allout-flag-region beg end ?\n)
+ (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)
point of non-opened subtree?)"
(interactive "p")
- (let (max-pos)
+ (let ((start-point (point)))
(if (and (not strict)
- (allout-hidden-p))
+ (allout-hidden-p))
- (progn (allout-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 (allout-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 (allout-chart-subtree (or level 1)))
- (to-reveal (allout-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.
- (progn
- (allout-flag-region (point) (allout-snug-back) ?\n)
- (if allout-show-bodies
- (progn (goto-char (car to-reveal))
- (allout-show-current-entry)))))
- (while to-reveal
- (goto-char (car to-reveal))
- (allout-flag-region (point) (allout-snug-back) ?\n)
- (if allout-show-bodies
- (progn (goto-char (car to-reveal))
- (allout-show-current-entry)))
- (setq to-reveal (cdr to-reveal)))))))))
-;;;_ > allout-hide-point-reconcile ()
-(defun allout-hide-reconcile ()
- "Like `allout-hide-current-entry'; hides completely if within hidden region.
-
-Specifically intended for aberrant exposure states, like entries that were
-exposed by `allout-show-entry' but are within otherwise concealed regions."
- (interactive)
- (save-excursion
- (allout-goto-prefix)
- (allout-flag-region (if (not (bobp)) (1- (point)) (point))
- (progn (allout-pre-next-preface)
- (if (= ?\r (following-char))
- (point)
- (1- (point))))
- ?\r)))
+ (allout-beginning-of-current-line)
+ (save-restriction
+ (let* ((chart (allout-chart-subtree (or level 1)))
+ (to-reveal (allout-chart-to-reveal chart (or level 1))))
+ (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.
-As with `allout-hide-current-entry-completely', useful for rectifying
-aberrant exposure states produced by `allout-show-entry'."
-
+Useful for coherently exposing to a random point in a hidden region."
(interactive)
(save-excursion
(let ((orig-pt (point))
(orig-pref (allout-goto-prefix))
(last-at (point))
bag-it)
- (while (or bag-it (= (preceding-char) ?\r))
- (beginning-of-line)
+ (while (or bag-it (allout-hidden-p))
+ (while (allout-hidden-p)
+ ;; XXX We would use `(move-beginning-of-line 1)', but it gets
+ ;; stuck on hidden newlines at column 80, as of GNU Emacs 22.0.50.
+ (beginning-of-line)
+ (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.
(interactive)
(allout-back-to-current-heading)
(save-excursion
- (allout-flag-region (point)
- (progn (allout-end-of-current-entry) (point))
- ?\r)))
+ (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 the entry if repeat count."
+ "Show body following current heading, or hide entry with universal argument."
(interactive "P")
(if arg
(allout-hide-current-entry)
+ (save-excursion (allout-show-to-offshoot))
(save-excursion
(allout-flag-region (point)
- (progn (allout-end-of-current-entry) (point))
- ?\n))))
-;;;_ > allout-hide-current-entry-completely ()
-; ... allout-hide-current-entry-completely also for isearch dynamic exposure:
-(defun allout-hide-current-entry-completely ()
- "Like `allout-hide-current-entry', but conceal topic completely.
-
-Specifically intended for aberrant exposure states, like entries that were
-exposed by `allout-show-entry' but are within otherwise concealed regions."
- (interactive)
- (save-excursion
- (allout-goto-prefix)
- (allout-flag-region (if (not (bobp)) (1- (point)) (point))
- (progn (allout-pre-next-preface)
- (if (= ?\r (following-char))
- (point)
- (1- (point))))
- ?\r)))
+ (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,
(error "No topics")
;; got to first, outermost topic - set to expose it and siblings:
(message "Above outermost topic - exposing all.")
- (allout-flag-region (point-min)(point-max) ?\n))
+ (allout-flag-region (point-min)(point-max) nil))
+ (allout-beginning-of-current-line)
(if (not arg)
- (allout-flag-current-subtree ?\n)
+ (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.
+
+If optional INCLUDE-SINGLE-LINERS is true, then include single-line
+topics \(which intrinsically can be considered both collapsed and
+not\), as collapsed. Otherwise they are considered uncollapsed."
+ (save-excursion
+ (and
+ (= (progn (allout-back-to-current-heading)
+ (move-end-of-line 1)
+ (point))
+ (allout-end-of-current-subtree))
+ (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.
-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 (allout-goto-prefix))
- (error "No topics found")
- (end-of-line)(point)))))
- (allout-flag-current-subtree ?\r)
- (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 (allout-up-current-level 1 t)
- t
- (goto-char 0)
- (let ((msg
- "Top-level topic already closed - closing siblings..."))
- (message msg)
- (allout-expose-topic '(0 :))
- (message (concat msg " Done.")))
- nil)
- (/= (allout-recent-depth) 0))
- (allout-hide-current-subtree))
- (goto-char from)))
+ (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-up-current-level 1 t) (allout-hide-current-subtree))
+ (t (goto-char 0)
+ (message sibs-msg)
+ (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."
"Show all of the text in the buffer."
(interactive)
(message "Exposing entire buffer...")
- (allout-flag-region (point-min) (point-max) ?\n)
+ (allout-flag-region (point-min) (point-max) nil)
(message "Exposing entire buffer... Done."))
;;;_ > allout-hide-bodies ()
(defun allout-hide-bodies ()
(narrow-to-region start end)
(goto-char (point-min))
(while (not (eobp))
- (allout-flag-region (point)
- (progn (allout-pre-next-preface) (point)) ?\r)
+ (end-of-line)
+ (allout-flag-region (point) (allout-end-of-entry) t)
(if (not (eobp))
(forward-char
- (if (looking-at "[\n\r][\n\r]")
+ (if (looking-at "\n\n")
2 1)))))))
;;;_ > allout-expose-topic (spec)
(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)
(setq spec (append (make-list residue prev-elem)
spec)))))))
((numberp curr-elem)
- (if (and (>= 0 curr-elem) (allout-visible-p))
+ (if (and (>= 0 curr-elem) (not (allout-hidden-p)))
(save-excursion (allout-hide-current-subtree t)
(if (> 0 curr-elem)
nil
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 (allout-current-depth))
- done
max-pos)
(cond ((null spec) nil)
((symbolp spec)
Use this instead of obsolete `allout-exposure'.
Examples:
-\(allout-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.
-\(allout-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.
-\(allout-exposure -2 : -1 *)
+\(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."
(allout-next-heading)))
(error "allout-new-exposure: Can't find any outline topics"))
(list 'allout-expose-topic (list 'quote spec))))
-;;;_ > allout-exposure '()
-(defmacro allout-exposure (&rest spec)
- "Being deprecated - use more recent `allout-new-exposure' instead.
-
-Literal frontend for `allout-old-expose-topic', doesn't evaluate arguments
-and retains start position."
- (list 'save-excursion
- '(if (not (or (allout-goto-prefix)
- (allout-next-heading)))
- (error "Can't find any outline topics"))
- (cons 'allout-old-expose-topic
- (mapcar (function (lambda (x) (list 'quote x))) spec))))
;;;_ #7 Systematic outline presentation - copying, printing, flattening
(save-excursion
(let*
;; state vars:
- (strings prefix pad result depth new-depth out gone-out bullet beg
+ (strings prefix result depth new-depth out gone-out bullet beg
next done)
(goto-char start)
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))))
+ (end-of-line)
+ (allout-back-to-visible-text)))
strings))
- (if (< (point) next) ; Resume from after hid text, if any.
- (forward-line 1))
+ (when (< (point) next) ; Resume from after hid text, if any.
+ (line-move 1))
(setq beg (point)))
;; Accumulate list for this topic:
(setq strings (nreverse strings))
(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 &optional start-num)
+ format start-num)
"Map function on exposed parts of current topic; results to another buffer.
All args are options; default values itemized below.
(defun allout-insert-listified (listified)
"Insert contents of listified outline portion in current buffer.
-Listified is a list representing each topic header and body:
+LISTIFIED is a list representing each topic header and body:
\`(depth prefix text)'
(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 compatable with outline mode - use
+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 buffers name with \" exposed\" appended to
+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")
(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 compatable with outline mode - use
+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 buffers name with \" exposed\" appended to
+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
-;;;_ > allout-latex-verb-quote (str &optional flow)
-(defun allout-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."
+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
+ string
""))
;;;_ > allout-latex-verbatim-quote-curr-line ()
(defun allout-latex-verbatim-quote-curr-line ()
- "Express line for exact \(literal) representation across latex processing.
+ "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))
(insert "\\")
(setq end (1+ end))
(goto-char (1+ (match-end 0))))))
-;;;_ > allout-insert-latex-header (buf)
-(defun allout-insert-latex-header (buf)
- "Insert initial latex commands at point in BUFFER."
+;;;_ > 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 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"
allout-title-style))
(labelcmd (format "\\newcommand{\\labelcmd}[1]{{%s #1}}\n"
(title (format "%s%s%s%s"
"\\titlecmd{"
(allout-latex-verb-quote (if allout-title
- (condition-case err
+ (condition-case nil
(eval allout-title)
('error "<unnamed buffer>"))
"Unnamed Outline"))
hoffset
vspace)
)))
-;;;_ > allout-insert-latex-trailer (buf)
-(defun allout-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"))
;;;_ > allout-latexify-one-item (depth prefix bullet text)
(defun allout-latexify-one-item (depth prefix bullet text)
body-content bop)
; Do the head line:
(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"))
+ (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 "\\beginlines\n")
)))
;;;_ > allout-latexify-exposed (arg &optional tobuf)
(defun allout-latexify-exposed (arg &optional tobuf)
- "Format current topics exposed portions to TOBUF for latex processing.
+ "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.
(pop-to-buffer buf)
(goto-char start-pt)))
-;;;_ #8 miscellaneous
+;;;_ #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-1 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:
+ (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 "*"))
+ )
+ )
+ )
+ )
+ )
+;;;_ > 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 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.
+
+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))))
+ 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)
+
+ (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 encryption failed - %s"
+ "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 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 allout-buffer decrypt nil
+ (if retried (1+ retried) 1)
+ 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 unusable"
+ " non-armored text - 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 (format "%s" got-pass))
+
+ (cond (verifier-string
+ (save-window-excursion
+ (if (allout-encrypt-string verifier-string 'decrypt
+ allout-buffer 'symmetric
+ for-key nil 0 'verifying
+ 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.")))
+ ;; reduce opportunity for memory cherry-picking by zeroing duplicate:
+ (dotimes (i (length got-pass))
+ (aset got-pass i 0))
+ )
+ )
+ )
+ )
+ )
+;;;_ > 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 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 '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
;;;_ > allout-mark-topic ()
(defun allout-mark-topic ()
"Put the region around topic currently containing point."
(exchange-point-and-mark))
;;;_ > 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 subsequently.
t
(allout-open-topic 2)
(insert (concat "Dummy outline topic header - see"
- "`allout-mode' docstring: `^Hm'."))
- (forward-line 1)
+ "`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))
- (open-line 1)
- (allout-open-topic 0)
- (insert "Local emacs vars.\n")
- (allout-open-topic 1)
- (insert "(`allout-layout' is for allout.el allout-mode)\n")
- (allout-open-topic 0)
- (insert "Local variables:\n")
- (allout-open-topic 0)
- (insert (format "allout-layout: %s\n"
- (or allout-layout
- '(-1 : 0))))
- (allout-open-topic 0)
- (insert "End:\n"))))
+ (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 ((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))
+ )
+ )
+ )
+ )
;;;_ > 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.
(regexp-sans-escapes (substring regexp 1)))
;; Exclude first char, but maintain count:
(regexp-sans-escapes (substring regexp 1) successive-backslashes))))
-;;;_ > my-region-active-p ()
-(defmacro my-region-active-p ()
- (if (fboundp 'region-active-p)
- '(region-active-p)
- 'mark-active))
-;;;_ - 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)))))))
-;;;_ : my-mark-marker to accommodate divergent emacsen:
-(defun my-mark-marker (&optional force buffer)
- "Accommodate the different signature for mark-marker across emacsen.
-
-GNU XEmacs takes two optional args, while mainline GNU Emacs does not,
+;;;_ > 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 0)))
+ (setq count (1+ count)))
+ count))))
+;;;_ > 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)
- (mark-marker force buffer)
+ (apply 'mark-marker force buffer)
(mark-marker)))
-
-;;;_ #9 Under development
+;;;_ > 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."
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 `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:
+;;;_ #11 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