;;; simple.el --- basic editing commands for Emacs
;; Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-;; 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+;; 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+;; Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: internal
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; Mark the newline(s) `hard'.
(if use-hard-newlines
(set-hard-newline-properties
- (- (point) (if arg (prefix-numeric-value arg) 1)) (point)))
+ (- (point) (prefix-numeric-value arg)) (point)))
;; If the newline leaves the previous line blank,
;; and we have a left margin, delete that from the blank line.
(or flag
(newline)
(save-excursion
(goto-char pos)
+ ;; We are at EOL before the call to indent-according-to-mode, and
+ ;; after it we usually are as well, but not always. We tried to
+ ;; address it with `save-excursion' but that uses a normal marker
+ ;; whereas we need `move after insertion', so we do the save/restore
+ ;; by hand.
+ (setq pos (copy-marker pos t))
(indent-according-to-mode)
+ (goto-char pos)
+ ;; Remove the trailing white-space after indentation because
+ ;; indentation may introduce the whitespace.
(delete-horizontal-space t))
(indent-according-to-mode)))
(if (boundp 'edebug-active) edebug-active)))
(let ((char-string
(if (or (if (boundp 'edebug-active) edebug-active)
- (memq this-command '(eval-last-sexp eval-print-last-sexp)))
+ (memq this-command '(eval-last-sexp eval-print-last-sexp)))
(prin1-char value))))
(if char-string
(format " (#o%o, #x%x, %s)" value value char-string)
"Puts element of the minibuffer history in the minibuffer.
The argument NABS specifies the absolute history position."
(interactive "p")
- (let ((minimum (if minibuffer-default -1 0))
+ (let ((minimum (if minibuffer-default
+ (- (if (listp minibuffer-default)
+ (length minibuffer-default)
+ 1))
+ 0))
elt minibuffer-returned-to-present)
(if (and (zerop minibuffer-history-position)
(null minibuffer-text-before-history))
(goto-char (point-max))
(delete-minibuffer-contents)
(setq minibuffer-history-position nabs)
- (cond ((= nabs -1)
- (setq elt minibuffer-default))
+ (cond ((< nabs 0)
+ (setq elt (if (listp minibuffer-default)
+ (nth (1- (abs nabs)) minibuffer-default)
+ minibuffer-default)))
((= nabs 0)
(setq elt (or minibuffer-text-before-history ""))
(setq minibuffer-returned-to-present t)
The second, optional, argument PUSH, has the same meaning as the
similar argument to `x-set-cut-buffer', which see.")
-(make-variable-frame-local 'interprogram-cut-function)
-
(defvar interprogram-paste-function nil
"Function to call to get text cut from other programs.
string, then the caller of the function \(usually `current-kill')
should put this string in the kill ring as the latest kill.
+This function may also return a list of strings if the window
+system supports multiple selections. The first string will be
+used as the pasted text, but the other will be placed in the
+kill ring for easy access via `yank-pop'.
+
Note that the function should return a string only if a program other
than Emacs has provided a string for pasting; if Emacs provided the
most recent string, the function should return nil. If it is
difficult to tell whether Emacs or some other program provided the
current string, it is probably good enough to return nil if the string
is equal (according to `string=') to the last text Emacs provided.")
-
-(make-variable-frame-local 'interprogram-paste-function)
\f
(defun current-kill (n &optional do-not-move)
"Rotate the yanking point by N places, and then return that kill.
-If N is zero, `interprogram-paste-function' is set, and calling it
-returns a string, then that string is added to the front of the
-kill ring and returned as the latest kill.
-If optional arg DO-NOT-MOVE is non-nil, then don't actually move the
-yanking point; just return the Nth kill forward."
+If N is zero, `interprogram-paste-function' is set, and calling it returns a
+string or list of strings, then that string (or list) is added to the front
+of the kill ring and the string (or first string in the list) is returned as
+the latest kill. If optional arg DO-NOT-MOVE is non-nil, then don't
+actually move the yanking point; just return the Nth kill forward."
(let ((interprogram-paste (and (= n 0)
interprogram-paste-function
(funcall interprogram-paste-function))))
;; text to the kill ring, so Emacs doesn't try to own the
;; selection, with identical text.
(let ((interprogram-cut-function nil))
- (kill-new interprogram-paste))
- interprogram-paste)
+ (if (listp interprogram-paste)
+ (mapc 'kill-new (nreverse interprogram-paste))
+ (kill-new interprogram-paste)))
+ (car kill-ring))
(or kill-ring (error "Kill ring is empty"))
(let ((ARGth-kill-element
(nthcdr (mod (- n (length kill-ring-yank-pointer))
"Save the region as if killed, but don't kill it.
In Transient Mark mode, deactivate the mark.
If `interprogram-cut-function' is non-nil, also save the text for a window
-system cut and paste."
+system cut and paste.
+
+This command's old key binding has been given to `kill-ring-save'."
(interactive "r")
(if (eq last-command 'kill-region)
(kill-append (filter-buffer-substring beg end) (< end beg))
(defcustom yank-excluded-properties
'(read-only invisible intangible field mouse-face help-echo local-map keymap
yank-handler follow-link fontified)
- "*Text properties to discard when yanking.
+ "Text properties to discard when yanking.
The value should be a list of text properties to discard or t,
which means to discard all text properties."
:type '(choice (const :tag "All" t) (repeat symbol))
"Current goal column for vertical motion.
It is the column where point was
at the start of current run of vertical motion commands.
-When the `track-eol' feature is doing its job, the value is 9999.")
+When the `track-eol' feature is doing its job, the value is `most-positive-fixnum'.")
(defcustom line-move-ignore-invisible t
"*Non-nil means \\[next-line] and \\[previous-line] ignore invisible lines.
:type 'boolean
:group 'editing-basics)
-(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)))))
-
;; Returns non-nil if partial move was done.
(defun line-move-partial (arg noerror to-end)
(if (< arg 0)
(vpos (nth 1 lh))
(ypos (nth 2 lh))
(rbot (nth 3 lh))
- ppos py vs)
+ py vs)
(when (or (null lh)
(>= rbot (frame-char-height))
(<= ypos (- (frame-char-height))))
;; Don't count beg of empty line as end of line
;; unless we just did explicit end-of-line.
(or (not (bolp)) (eq last-command 'move-end-of-line)))
- 9999
+ most-positive-fixnum
(current-column))))
- (if (and (not (integerp selective-display))
- (not line-move-ignore-invisible))
+ (if (not (or (integerp selective-display)
+ line-move-ignore-invisible))
;; Use just newline characters.
;; Set ARG to 0 if we move as many lines as requested.
(or (if (> arg 0)
(while (and (> arg 0) (not done))
;; If the following character is currently invisible,
;; skip all characters with that same `invisible' property value.
- (while (and (not (eobp)) (line-move-invisible-p (point)))
+ (while (and (not (eobp)) (invisible-p (point)))
(goto-char (next-char-property-change (point))))
;; Move a line.
;; We don't use `end-of-line', since we want to escape
(setq done t)))
((and (> arg 1) ;; Use vertical-motion for last move
(not (integerp selective-display))
- (not (line-move-invisible-p (point))))
+ (not (invisible-p (point))))
;; We avoid vertical-motion when possible
;; because that has to fontify.
(forward-line 1))
(setq done t)))
((and (< arg -1) ;; Use vertical-motion for last move
(not (integerp selective-display))
- (not (line-move-invisible-p (1- (point)))))
+ (not (invisible-p (1- (point)))))
(forward-line -1))
((zerop (vertical-motion -1))
(if (not noerror)
;; if our target is the middle of this line.
(or (zerop (or goal-column temporary-goal-column))
(< arg 0))
- (not (bobp)) (line-move-invisible-p (1- (point))))
+ (not (bobp)) (invisible-p (1- (point))))
(goto-char (previous-char-property-change (point))))))))
;; This is the value the function returns.
(= arg 0))
(save-excursion
;; Like end-of-line but ignores fields.
(skip-chars-forward "^\n")
- (while (and (not (eobp)) (line-move-invisible-p (point)))
+ (while (and (not (eobp)) (invisible-p (point)))
(goto-char (next-char-property-change (point)))
(skip-chars-forward "^\n"))
(point))))
(move-to-column col))
(when (and line-move-ignore-invisible
- (not (bolp)) (line-move-invisible-p (1- (point))))
+ (not (bolp)) (invisible-p (1- (point))))
(let ((normal-location (point))
(normal-column (current-column)))
;; If the following character is currently invisible,
;; skip all characters with that same `invisible' property value.
(while (and (not (eobp))
- (line-move-invisible-p (point)))
+ (invisible-p (point)))
(goto-char (next-char-property-change (point))))
;; Have we advanced to a larger column position?
(if (> (current-column) normal-column)
;; but with a more reasonable buffer position.
(goto-char normal-location)
(let ((line-beg (save-excursion (beginning-of-line) (point))))
- (while (and (not (bolp)) (line-move-invisible-p (1- (point))))
+ (while (and (not (bolp)) (invisible-p (1- (point))))
(goto-char (previous-char-property-change (point) line-beg))))))))
(defun move-end-of-line (arg)
(and (line-move arg t)
(not (bobp))
(progn
- (while (and (not (bobp)) (line-move-invisible-p (1- (point))))
- (goto-char (previous-char-property-change (point))))
+ (while (and (not (bobp)) (invisible-p (1- (point))))
+ (goto-char (previous-single-char-property-change
+ (point) 'invisible)))
(backward-char 1)))
(point)))))
(goto-char newpos)
(or arg (setq arg 1))
(let ((orig (point))
- start first-vis first-vis-field-value)
+ first-vis first-vis-field-value)
;; Move by lines, if ARG is not 1 (the default).
(if (/= arg 1)
;; Move to beginning-of-line, ignoring fields and invisibles.
(skip-chars-backward "^\n")
- (while (and (not (bobp)) (line-move-invisible-p (1- (point))))
+ (while (and (not (bobp)) (invisible-p (1- (point))))
(goto-char (previous-char-property-change (point)))
(skip-chars-backward "^\n"))
- (setq start (point))
;; Now find first visible char in the line
- (while (and (not (eobp)) (line-move-invisible-p (point)))
+ (while (and (not (eobp)) (invisible-p (point)))
(goto-char (next-char-property-change (point))))
(setq first-vis (point))
regexp)
:group 'fill)
-(defvar comment-line-break-function 'comment-indent-new-line
- "*Mode-specific function which line breaks and continues a comment.
-
-This function is only called during auto-filling of a comment section.
-The function should take a single optional argument, which is a flag
-indicating whether it should use soft newlines.")
-
;; This function is used as the auto-fill-function of a buffer
;; when Auto-Fill mode is enabled.
;; It returns t if it really did any work.
(if (save-excursion
(skip-chars-backward " \t")
(= (point) fill-point))
- (funcall comment-line-break-function t)
+ (default-indent-new-line t)
(save-excursion
(goto-char fill-point)
- (funcall comment-line-break-function t)))
+ (default-indent-new-line t)))
;; Now do justification, if required
(if (not (eq justify 'left))
(save-excursion
(justify-current-line justify t t)
t)))
+(defvar comment-line-break-function 'comment-indent-new-line
+ "*Mode-specific function which line breaks and continues a comment.
+This function is called during auto-filling when a comment syntax
+is defined.
+The function should take a single optional argument, which is a flag
+indicating whether it should use soft newlines.")
+
+(defun default-indent-new-line (&optional soft)
+ "Break line at point and indent.
+If a comment syntax is defined, call `comment-indent-new-line'.
+
+The inserted newline is marked hard if variable `use-hard-newlines' is true,
+unless optional argument SOFT is non-nil."
+ (interactive)
+ (if comment-start
+ (funcall comment-line-break-function soft)
+ ;; Insert the newline before removing empty space so that markers
+ ;; get preserved better.
+ (if soft (insert-and-inherit ?\n) (newline 1))
+ (save-excursion (forward-char -1) (delete-horizontal-space))
+ (delete-horizontal-space)
+
+ (if (and fill-prefix (not adaptive-fill-mode))
+ ;; Blindly trust a non-adaptive fill-prefix.
+ (progn
+ (indent-to-left-margin)
+ (insert-before-markers-and-inherit fill-prefix))
+
+ (cond
+ ;; If there's an adaptive prefix, use it unless we're inside
+ ;; a comment and the prefix is not a comment starter.
+ (fill-prefix
+ (indent-to-left-margin)
+ (insert-and-inherit fill-prefix))
+ ;; If we're not inside a comment, just try to indent.
+ (t (indent-according-to-mode))))))
+
(defvar normal-auto-fill-function 'do-auto-fill
"The function to use for `auto-fill-function' if Auto Fill mode is turned on.
Some major modes set this.")
(defun toggle-truncate-lines (&optional arg)
"Toggle whether to fold or truncate long lines for the current buffer.
-With arg, truncate long lines iff arg is positive.
-Note that in side-by-side windows, truncation is always enabled."
+With prefix argument ARG, truncate long lines if ARG is positive,
+otherwise don't truncate them. Note that in side-by-side
+windows, truncation is always enabled."
(interactive "P")
(setq truncate-lines
(if (null arg)
(defun overwrite-mode (arg)
"Toggle overwrite mode.
-With arg, turn overwrite mode on iff arg is positive.
-In overwrite mode, printing characters typed in replace existing text
-on a one-for-one basis, rather than pushing it to the right. At the
-end of a line, such characters extend the line. Before a tab,
-such characters insert until the tab is filled in.
+With prefix argument ARG, turn overwrite mode on if ARG is positive,
+otherwise turn it off. In overwrite mode, printing characters typed
+in replace existing text on a one-for-one basis, rather than pushing
+it to the right. At the end of a line, such characters extend the line.
+Before a tab, such characters insert until the tab is filled in.
\\[quoted-insert] still inserts characters in overwrite mode; this
is supposed to make it easier to insert characters when necessary."
(interactive "P")
(defun binary-overwrite-mode (arg)
"Toggle binary overwrite mode.
-With arg, turn binary overwrite mode on iff arg is positive.
-In binary overwrite mode, printing characters typed in replace
-existing text. Newlines are not treated specially, so typing at the
-end of a line joins the line to the next, with the typed character
-between them. Typing before a tab character simply replaces the tab
-with the character typed.
-\\[quoted-insert] replaces the text at the cursor, just as ordinary
-typing characters do.
+With prefix argument ARG, turn binary overwrite mode on if ARG is
+positive, otherwise turn it off. In binary overwrite mode, printing
+characters typed in replace existing text. Newlines are not treated
+specially, so typing at the end of a line joins the line to the next,
+with the typed character between them. Typing before a tab character
+simply replaces the tab with the character typed. \\[quoted-insert]
+replaces the text at the cursor, just as ordinary typing characters do.
Note that binary overwrite mode is not its own minor mode; it is a
specialization of overwrite mode, entered by setting the
(define-minor-mode line-number-mode
"Toggle Line Number mode.
-With arg, turn Line Number mode on iff arg is positive.
-When Line Number mode is enabled, the line number appears
-in the mode line.
+With arg, turn Line Number mode on if arg is positive, otherwise
+turn it off. When Line Number mode is enabled, the line number
+appears in the mode line.
Line numbers do not appear for very large buffers and buffers
with very long lines; see variables `line-number-display-limit'
(define-minor-mode column-number-mode
"Toggle Column Number mode.
-With arg, turn Column Number mode on iff arg is positive.
-When Column Number mode is enabled, the column number appears
-in the mode line."
+With arg, turn Column Number mode on if arg is positive,
+otherwise turn it off. When Column Number mode is enabled, the
+column number appears in the mode line."
:global t :group 'mode-line)
(define-minor-mode size-indication-mode
"Toggle Size Indication mode.
-With arg, turn Size Indication mode on iff arg is positive. When
-Size Indication mode is enabled, the size of the accessible part
-of the buffer appears in the mode line."
+With arg, turn Size Indication mode on if arg is positive,
+otherwise turn it off. When Size Indication mode is enabled, the
+size of the accessible part of the buffer appears in the mode line."
:global t :group 'mode-line)
\f
(defgroup paren-blinking nil
(skip-syntax-backward "/\\")
(point))))))
(let* ((oldpos (point))
- blinkpos
- message-log-max ; Don't log messages about paren matching.
- matching-paren
- open-paren-line-string)
- (save-excursion
- (save-restriction
- (if blink-matching-paren-distance
- (narrow-to-region (max (minibuffer-prompt-end)
- (- (point) blink-matching-paren-distance))
- oldpos))
- (condition-case ()
- (let ((parse-sexp-ignore-comments
- (and parse-sexp-ignore-comments
- (not blink-matching-paren-dont-ignore-comments))))
- (setq blinkpos (scan-sexps oldpos -1)))
- (error nil)))
- (and blinkpos
- ;; Not syntax '$'.
- (not (eq (syntax-class (syntax-after blinkpos)) 8))
- (setq matching-paren
- (let ((syntax (syntax-after blinkpos)))
- (and (consp syntax)
- (eq (syntax-class syntax) 4)
- (cdr syntax)))))
- (cond
- ((not (or (eq matching-paren (char-before oldpos))
- ;; The cdr might hold a new paren-class info rather than
- ;; a matching-char info, in which case the two CDRs
- ;; should match.
- (eq matching-paren (cdr (syntax-after (1- oldpos))))))
- (message "Mismatched parentheses"))
- ((not blinkpos)
- (if (not blink-matching-paren-distance)
- (message "Unmatched parenthesis")))
- ((pos-visible-in-window-p blinkpos)
- ;; Matching open within window, temporarily move to blinkpos but only
- ;; if `blink-matching-paren-on-screen' is non-nil.
- (and blink-matching-paren-on-screen
- (not show-paren-mode)
- (save-excursion
- (goto-char blinkpos)
- (sit-for blink-matching-delay))))
- (t
- (save-excursion
- (goto-char blinkpos)
- (setq open-paren-line-string
- ;; Show what precedes the open in its line, if anything.
- (if (save-excursion
- (skip-chars-backward " \t")
- (not (bolp)))
- (buffer-substring (line-beginning-position)
- (1+ blinkpos))
- ;; Show what follows the open in its line, if anything.
- (if (save-excursion
- (forward-char 1)
- (skip-chars-forward " \t")
- (not (eolp)))
- (buffer-substring blinkpos
- (line-end-position))
- ;; Otherwise show the previous nonblank line,
- ;; if there is one.
- (if (save-excursion
- (skip-chars-backward "\n \t")
- (not (bobp)))
- (concat
- (buffer-substring (progn
- (skip-chars-backward "\n \t")
- (line-beginning-position))
- (progn (end-of-line)
- (skip-chars-backward " \t")
- (point)))
- ;; Replace the newline and other whitespace with `...'.
- "..."
- (buffer-substring blinkpos (1+ blinkpos)))
- ;; There is nothing to show except the char itself.
- (buffer-substring blinkpos (1+ blinkpos)))))))
- (message "Matches %s"
- (substring-no-properties open-paren-line-string))))))))
-
-;Turned off because it makes dbx bomb out.
+ (message-log-max nil) ; Don't log messages about paren matching.
+ (atdollar (eq (syntax-class (syntax-after (1- oldpos))) 8))
+ (isdollar)
+ (blinkpos
+ (save-excursion
+ (save-restriction
+ (if blink-matching-paren-distance
+ (narrow-to-region
+ (max (minibuffer-prompt-end) ;(point-min) unless minibuf.
+ (- (point) blink-matching-paren-distance))
+ oldpos))
+ (let ((parse-sexp-ignore-comments
+ (and parse-sexp-ignore-comments
+ (not blink-matching-paren-dont-ignore-comments))))
+ (condition-case ()
+ (scan-sexps oldpos -1)
+ (error nil))))))
+ (matching-paren
+ (and blinkpos
+ ;; Not syntax '$'.
+ (not (setq isdollar
+ (eq (syntax-class (syntax-after blinkpos)) 8)))
+ (let ((syntax (syntax-after blinkpos)))
+ (and (consp syntax)
+ (eq (syntax-class syntax) 4)
+ (cdr syntax))))))
+ (cond
+ ;; isdollar is for:
+ ;; http://lists.gnu.org/archive/html/emacs-devel/2007-10/msg00871.html
+ ((not (or (and isdollar blinkpos)
+ (and atdollar (not blinkpos)) ; see below
+ (eq matching-paren (char-before oldpos))
+ ;; The cdr might hold a new paren-class info rather than
+ ;; a matching-char info, in which case the two CDRs
+ ;; should match.
+ (eq matching-paren (cdr (syntax-after (1- oldpos))))))
+ (message "Mismatched parentheses"))
+ ((not blinkpos)
+ (or blink-matching-paren-distance
+ ;; Don't complain when `$' with no blinkpos, because it
+ ;; could just be the first one typed in the buffer.
+ atdollar
+ (message "Unmatched parenthesis")))
+ ((pos-visible-in-window-p blinkpos)
+ ;; Matching open within window, temporarily move to blinkpos but only
+ ;; if `blink-matching-paren-on-screen' is non-nil.
+ (and blink-matching-paren-on-screen
+ (not show-paren-mode)
+ (save-excursion
+ (goto-char blinkpos)
+ (sit-for blink-matching-delay))))
+ (t
+ (save-excursion
+ (goto-char blinkpos)
+ (let ((open-paren-line-string
+ ;; Show what precedes the open in its line, if anything.
+ (cond
+ ((save-excursion (skip-chars-backward " \t") (not (bolp)))
+ (buffer-substring (line-beginning-position)
+ (1+ blinkpos)))
+ ;; Show what follows the open in its line, if anything.
+ ((save-excursion
+ (forward-char 1)
+ (skip-chars-forward " \t")
+ (not (eolp)))
+ (buffer-substring blinkpos
+ (line-end-position)))
+ ;; Otherwise show the previous nonblank line,
+ ;; if there is one.
+ ((save-excursion (skip-chars-backward "\n \t") (not (bobp)))
+ (concat
+ (buffer-substring (progn
+ (skip-chars-backward "\n \t")
+ (line-beginning-position))
+ (progn (end-of-line)
+ (skip-chars-backward " \t")
+ (point)))
+ ;; Replace the newline and other whitespace with `...'.
+ "..."
+ (buffer-substring blinkpos (1+ blinkpos))))
+ ;; There is nothing to show except the char itself.
+ (t (buffer-substring blinkpos (1+ blinkpos))))))
+ (message "Matches %s"
+ (substring-no-properties open-paren-line-string)))))))))
+
+;; Turned off because it makes dbx bomb out.
(setq blink-paren-function 'blink-matching-open)
\f
;; This executes C-g typed while Emacs is waiting for a command.
These functions are called in order with four arguments:
CHOICE - the string to insert in the buffer,
BUFFER - the buffer in which the choice should be inserted,
-MINI-P - non-nil iff BUFFER is a minibuffer, and
+MINI-P - non-nil if BUFFER is a minibuffer, and
BASE-SIZE - the number of characters in BUFFER before
the string being completed.
(funcall mode)
;; Set up other local variables.
- (mapcar (lambda (v)
- (condition-case () ;in case var is read-only
- (if (symbolp v)
- (makunbound v)
- (set (make-local-variable (car v)) (cdr v)))
- (error nil)))
- lvars)
+ (mapc (lambda (v)
+ (condition-case () ;in case var is read-only
+ (if (symbolp v)
+ (makunbound v)
+ (set (make-local-variable (car v)) (cdr v)))
+ (error nil)))
+ lvars)
;; Run any hooks (typically set up by the major mode
;; for cloning to work properly).
;;; Handling of Backspace and Delete keys.
(defcustom normal-erase-is-backspace 'maybe
- "Set the default behaviour of the Delete and Backspace keys.
+ "Set the default behavior of the Delete and Backspace keys.
If set to t, Delete key deletes forward and Backspace key deletes
backward.
If set to nil, both Delete and Backspace keys delete backward.
If set to 'maybe (which is the default), Emacs automatically
-selects a behaviour. On window systems, the behaviour depends on
+selects a behavior. On window systems, the behavior depends on
the keyboard used. If the keyboard has both a Backspace key and
a Delete key, and both are mapped to their usual meanings, the
option's default value is set to t, so that Backspace can be used
(unless frame (setq frame (selected-frame)))
(with-selected-frame frame
(unless (terminal-parameter nil 'normal-erase-is-backspace)
- (if (cond ((eq normal-erase-is-backspace 'maybe)
- (and (not noninteractive)
- (or (memq system-type '(ms-dos windows-nt))
- (eq window-system 'mac)
- (and (memq window-system '(x))
- (fboundp 'x-backspace-delete-keys-p)
- (x-backspace-delete-keys-p))
- ;; If the terminal Emacs is running on has erase char
- ;; set to ^H, use the Backspace key for deleting
- ;; backward and, and the Delete key for deleting forward.
- (and (null window-system)
- (eq tty-erase-char ?\^H)))))
- (t
- normal-erase-is-backspace))
- (normal-erase-is-backspace-mode 1)
- (normal-erase-is-backspace-mode 0)))))
+ (normal-erase-is-backspace-mode
+ (if (if (eq normal-erase-is-backspace 'maybe)
+ (and (not noninteractive)
+ (or (memq system-type '(ms-dos windows-nt))
+ (eq window-system 'mac)
+ (and (memq window-system '(x))
+ (fboundp 'x-backspace-delete-keys-p)
+ (x-backspace-delete-keys-p))
+ ;; If the terminal Emacs is running on has erase char
+ ;; set to ^H, use the Backspace key for deleting
+ ;; backward, and the Delete key for deleting forward.
+ (and (null window-system)
+ (eq tty-erase-char ?\^H))))
+ normal-erase-is-backspace)
+ 1 0)))))
(defun normal-erase-is-backspace-mode (&optional arg)
"Toggle the Erase and Delete mode of the Backspace and Delete keys.
(define-minor-mode visible-mode
"Toggle Visible mode.
-With argument ARG turn Visible mode on iff ARG is positive.
+With argument ARG turn Visible mode on if ARG is positive, otherwise
+turn it off.
Enabling Visible mode makes all invisible text temporarily visible.
Disabling Visible mode turns off that effect. Visible mode
; 'insert-in-front-hooks '(minibuffer-prompt-insertion)))
;
+\f
+;;;; Problematic external packages.
+
+;; rms says this should be done by specifying symbols that define
+;; versions together with bad values. This is therefore not as
+;; flexible as it could be. See the thread:
+;; http://lists.gnu.org/archive/html/emacs-devel/2007-08/msg00300.html
+(defconst bad-packages-alist
+ ;; Not sure exactly which semantic versions have problems.
+ ;; Definitely 2.0pre3, probably all 2.0pre's before this.
+ '((semantic semantic-version "\\`2\\.0pre[1-3]\\'"
+ "The version of `semantic' loaded does not work in Emacs 22.
+It can cause constant high CPU load.
+Upgrade to at least Semantic 2.0pre4 (distributed with CEDET 1.0pre4).")
+ ;; CUA-mode does not work with GNU Emacs version 22.1 and newer.
+ ;; Except for version 1.2, all of the 1.x and 2.x version of cua-mode
+ ;; provided the `CUA-mode' feature. Since this is no longer true,
+ ;; we can warn the user if the `CUA-mode' feature is ever provided.
+ (CUA-mode t nil
+"CUA-mode is now part of the standard GNU Emacs distribution,
+so you can now enable CUA via the Options menu or by customizing `cua-mode'.
+
+You have loaded an older version of CUA-mode which does not work
+correctly with this version of Emacs. You should remove the old
+version and use the one distributed with Emacs."))
+ "Alist of packages known to cause problems in this version of Emacs.
+Each element has the form (PACKAGE SYMBOL REGEXP STRING).
+PACKAGE is either a regular expression to match file names, or a
+symbol (a feature name); see the documentation of
+`after-load-alist', to which this variable adds functions.
+SYMBOL is either the name of a string variable, or `t'. Upon
+loading PACKAGE, if SYMBOL is t or matches REGEXP, display a
+warning using STRING as the message.")
+
+(defun bad-package-check (package)
+ "Run a check using the element from `bad-packages-alist' matching PACKAGE."
+ (condition-case nil
+ (let* ((list (assoc package bad-packages-alist))
+ (symbol (nth 1 list)))
+ (and list
+ (boundp symbol)
+ (or (eq symbol t)
+ (and (stringp (setq symbol (eval symbol)))
+ (string-match (nth 2 list) symbol)))
+ (display-warning :warning (nth 3 list))))
+ (error nil)))
+
+(mapc (lambda (elem)
+ (eval-after-load (car elem) `(bad-package-check ',(car elem))))
+ bad-packages-alist)
+
+
(provide 'simple)
;; arch-tag: 24af67c0-2a49-44f6-b3b1-312d8b570dfd