--- /dev/null
+;;; simple.el --- basic editing commands for XEmacs
+
+;; Copyright (C) 1985-7, 1993-5, 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
+;; Copyright (C) 2000, 2001, 2002, 2003 Ben Wing.
+
+;; Maintainer: XEmacs Development Team
+;; Keywords: lisp, extensions, internal, dumped
+
+;; This file is part of XEmacs.
+
+;; XEmacs 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)
+;; any later version.
+
+;; XEmacs is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with XEmacs; see the file COPYING. If not, write to the Free
+;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+;; 02111-1307, USA.
+
+;;; Synched up with: FSF 19.34 [But not very closely].
+
+;;; Commentary:
+
+;; This file is dumped with XEmacs.
+
+;; A grab-bag of basic XEmacs commands not specifically related to some
+;; major mode or to file-handling.
+
+;; Changes for zmacs-style active-regions:
+;;
+;; beginning-of-buffer, end-of-buffer, count-lines-region,
+;; count-lines-buffer, what-line, what-cursor-position, set-goal-column,
+;; set-fill-column, prefix-arg-internal, and line-move (which is used by
+;; next-line and previous-line) set zmacs-region-stays to t, so that they
+;; don't affect the current region-hilighting state.
+;;
+;; mark-whole-buffer, mark-word, exchange-point-and-mark, and
+;; set-mark-command (without an argument) call zmacs-activate-region.
+;;
+;; mark takes an optional arg like the new Fmark_marker() does. When
+;; the region is not active, mark returns nil unless the optional arg is true.
+;;
+;; push-mark, pop-mark, exchange-point-and-mark, and set-marker, and
+;; set-mark-command use (mark t) so that they can access the mark whether
+;; the region is active or not.
+;;
+;; shell-command, shell-command-on-region, yank, and yank-pop (which all
+;; push a mark) have been altered to call exchange-point-and-mark with an
+;; argument, meaning "don't activate the region". These commands only use
+;; exchange-point-and-mark to position the newly-pushed mark correctly, so
+;; this isn't a user-visible change. These functions have also been altered
+;; to use (mark t) for the same reason.
+
+;; 97/3/14 Jareth Hein (jhod@po.iijnet.or.jp) added kinsoku processing (support
+;; for filling of Asian text) into the fill code. This was ripped bleeding from
+;; Mule-2.3, and could probably use some feature additions (like additional wrap
+;; styles, etc)
+
+;; 97/06/11 Steve Baur (steve@xemacs.org) Convert use of
+;; (preceding|following)-char to char-(after|before).
+
+;;; Code:
+
+(defgroup editing-basics nil
+ "Most basic editing variables."
+ :group 'editing)
+
+(defgroup killing nil
+ "Killing and yanking commands."
+ :group 'editing)
+
+(defgroup fill-comments nil
+ "Indenting and filling of comments."
+ :prefix "comment-"
+ :group 'fill)
+
+(defgroup paren-matching nil
+ "Highlight (un)matching of parens and expressions."
+ :prefix "paren-"
+ :group 'matching)
+
+(defgroup log-message nil
+ "Messages logging and display customizations."
+ :group 'minibuffer)
+
+(defgroup warnings nil
+ "Warnings customizations."
+ :group 'minibuffer)
+
+
+(defcustom search-caps-disable-folding t
+ "*If non-nil, upper case chars disable case fold searching.
+This does not apply to \"yanked\" strings."
+ :type 'boolean
+ :group 'editing-basics)
+
+;; This is stolen (and slightly modified) from FSF emacs's
+;; `isearch-no-upper-case-p'.
+(defun no-upper-case-p (string &optional regexp-flag)
+ "Return t if there are no upper case chars in STRING.
+If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\')
+since they have special meaning in a regexp."
+ (let ((case-fold-search nil))
+ (not (string-match (if regexp-flag
+ "\\(^\\|\\\\\\\\\\|[^\\]\\)[A-Z]"
+ "[A-Z]")
+ string))
+ ))
+
+(defmacro with-search-caps-disable-folding (string regexp-flag &rest body) "\
+Eval BODY with `case-fold-search' let to nil if `search-caps-disable-folding'
+is non-nil, and if STRING (either a string or a regular expression according
+to REGEXP-FLAG) contains uppercase letters."
+ `(let ((case-fold-search
+ (if (and case-fold-search search-caps-disable-folding)
+ (no-upper-case-p ,string ,regexp-flag)
+ case-fold-search)))
+ ,@body))
+(put 'with-search-caps-disable-folding 'lisp-indent-function 2)
+(put 'with-search-caps-disable-folding 'edebug-form-spec
+ '(sexp sexp &rest form))
+
+(defmacro with-interactive-search-caps-disable-folding (string regexp-flag
+ &rest body)
+ "Same as `with-search-caps-disable-folding', but only in the case of a
+function called interactively."
+ `(let ((case-fold-search
+ (if (and (interactive-p)
+ case-fold-search search-caps-disable-folding)
+ (no-upper-case-p ,string ,regexp-flag)
+ case-fold-search)))
+ ,@body))
+(put 'with-interactive-search-caps-disable-folding 'lisp-indent-function 2)
+(put 'with-interactive-search-caps-disable-folding 'edebug-form-spec
+ '(sexp sexp &rest form))
+
+(defun newline (&optional n)
+ "Insert a newline, and move to left margin of the new line if it's blank.
+The newline is marked with the text-property `hard'.
+With optional arg N, insert that many newlines.
+In Auto Fill mode, if no numeric arg, break the preceding line if it's long."
+ (interactive "*P")
+ (barf-if-buffer-read-only nil (point))
+ ;; Inserting a newline at the end of a line produces better redisplay in
+ ;; try_window_id than inserting at the beginning of a line, and the textual
+ ;; result is the same. So, if we're at beginning of line, pretend to be at
+ ;; the end of the previous line.
+ ;; #### Does this have any relevance in XEmacs?
+ (let ((flag (and (not (bobp))
+ (bolp)
+ ;; Make sure the newline before point isn't intangible.
+ (not (get-char-property (1- (point)) 'intangible))
+ ;; Make sure the newline before point isn't read-only.
+ (not (get-char-property (1- (point)) 'read-only))
+ ;; Make sure the newline before point isn't invisible.
+ (not (get-char-property (1- (point)) 'invisible))
+ ;; This should probably also test for the previous char
+ ;; being the *last* character too.
+ (not (get-char-property (1- (point)) 'end-open))
+ ;; Make sure the newline before point has the same
+ ;; properties as the char before it (if any).
+ (< (or (previous-extent-change (point)) -2)
+ (- (point) 2))))
+ (was-page-start (and (bolp)
+ (looking-at page-delimiter)))
+ (beforepos (point)))
+ (if flag (backward-char 1))
+ ;; Call self-insert so that auto-fill, abbrev expansion etc. happens.
+ ;; Set last-command-char to tell self-insert what to insert.
+ (let ((last-command-char ?\n)
+ ;; Don't auto-fill if we have a numeric argument.
+ ;; Also not if flag is true (it would fill wrong line);
+ ;; there is no need to since we're at BOL.
+ (auto-fill-function (if (or n flag) nil auto-fill-function)))
+ (unwind-protect
+ (self-insert-command (prefix-numeric-value n))
+ ;; If we get an error in self-insert-command, put point at right place.
+ (if flag (forward-char 1))))
+ ;; If we did *not* get an error, cancel that forward-char.
+ (if flag (backward-char 1))
+ ;; Mark the newline(s) `hard'.
+ (if use-hard-newlines
+ (let* ((from (- (point) (if n (prefix-numeric-value n) 1)))
+ (sticky (get-text-property from 'end-open))) ; XEmacs
+ (put-text-property from (point) 'hard 't)
+ ;; If end-open is not "t", add 'hard to end-open list
+ (if (and (listp sticky) (not (memq 'hard sticky)))
+ (put-text-property from (point) 'end-open ; XEmacs
+ (cons 'hard sticky)))))
+ ;; If the newline leaves the previous line blank,
+ ;; and we have a left margin, delete that from the blank line.
+ (or flag
+ (save-excursion
+ (goto-char beforepos)
+ (beginning-of-line)
+ (and (looking-at "[ \t]$")
+ (> (current-left-margin) 0)
+ (delete-region (point) (progn (end-of-line) (point))))))
+ (if flag (forward-char 1))
+ ;; Indent the line after the newline, except in one case:
+ ;; when we added the newline at the beginning of a line
+ ;; which starts a page.
+ (or was-page-start
+ (move-to-left-margin nil t)))
+ nil)
+
+(defun set-hard-newline-properties (from to)
+ (let ((sticky (get-text-property from 'rear-nonsticky)))
+ (put-text-property from to 'hard 't)
+ ;; If rear-nonsticky is not "t", add 'hard to rear-nonsticky list
+ (if (and (listp sticky) (not (memq 'hard sticky)))
+ (put-text-property from (point) 'rear-nonsticky
+ (cons 'hard sticky)))))
+
+(defun open-line (n)
+ "Insert a newline and leave point before it.
+If there is a fill prefix and/or a left-margin, insert them on the new line
+if the line would have been blank.
+With arg N, insert N newlines."
+ (interactive "*p")
+ (let* ((do-fill-prefix (and fill-prefix (bolp)))
+ (do-left-margin (and (bolp) (> (current-left-margin) 0)))
+ (loc (point)))
+ (newline n)
+ (goto-char loc)
+ (while (> n 0)
+ (cond ((bolp)
+ (if do-left-margin (indent-to (current-left-margin)))
+ (if do-fill-prefix (insert fill-prefix))))
+ (forward-line 1)
+ (setq n (1- n)))
+ (goto-char loc)
+ (end-of-line)))
+
+(defun split-line ()
+ "Split current line, moving portion beyond point vertically down."
+ (interactive "*")
+ (skip-chars-forward " \t")
+ (let ((col (current-column))
+ (pos (point)))
+ (newline 1)
+ (indent-to col 0)
+ (goto-char pos)))
+
+(defun quoted-insert (arg)
+ "Read next input character and insert it.
+This is useful for inserting control characters.
+You may also type up to 3 octal digits, to insert a character with that code.
+
+In overwrite mode, this function inserts the character anyway, and
+does not handle octal digits specially. This means that if you use
+overwrite as your normal editing mode, you can use this function to
+insert characters when necessary.
+
+In binary overwrite mode, this function does overwrite, and octal
+digits are interpreted as a character code. This is supposed to make
+this function useful in editing binary files."
+ (interactive "*p")
+ (let ((char (if (or (not overwrite-mode)
+ (eq overwrite-mode 'overwrite-mode-binary))
+ (read-quoted-char)
+ ;; read-char obeys C-g, so we should protect. FSF
+ ;; doesn't have the protection here, but it's a bug in
+ ;; FSF.
+ (let ((inhibit-quit t))
+ (read-char)))))
+ (if (> arg 0)
+ (if (eq overwrite-mode 'overwrite-mode-binary)
+ (delete-char arg)))
+ (while (> arg 0)
+ (insert char)
+ (setq arg (1- arg)))))
+
+(defun delete-indentation (&optional arg)
+ "Join this line to previous and fix up whitespace at join.
+If there is a fill prefix, delete it from the beginning of this line.
+With argument, join this line to following line."
+ (interactive "*P")
+ (beginning-of-line)
+ (if arg (forward-line 1))
+ (if (eq (char-before (point)) ?\n)
+ (progn
+ (delete-region (point) (1- (point)))
+ ;; If the second line started with the fill prefix,
+ ;; delete the prefix.
+ (if (and fill-prefix
+ (<= (+ (point) (length fill-prefix)) (point-max))
+ (string= fill-prefix
+ (buffer-substring (point)
+ (+ (point) (length fill-prefix)))))
+ (delete-region (point) (+ (point) (length fill-prefix))))
+ (fixup-whitespace))))
+
+(defalias 'join-line 'delete-indentation)
+
+(defun fixup-whitespace ()
+ "Fixup white space between objects around point.
+Leave one space or none, according to the context."
+ (interactive "*")
+ (save-excursion
+ (delete-horizontal-space)
+ (if (or (looking-at "^\\|\\s)")
+ (save-excursion (backward-char 1)
+ (looking-at "$\\|\\s(\\|\\s'")))
+ nil
+ (insert ?\ ))))
+
+(defun delete-horizontal-space ()
+ "Delete all spaces and tabs around point."
+ (interactive "*")
+ (skip-chars-backward " \t")
+ (delete-region (point) (progn (skip-chars-forward " \t") (point))))
+
+(defun just-one-space ()
+ "Delete all spaces and tabs around point, leaving one space."
+ (interactive "*")
+ (if abbrev-mode ; XEmacs
+ (expand-abbrev))
+ (skip-chars-backward " \t")
+ (if (eq (char-after (point)) ? ) ; XEmacs
+ (forward-char 1)
+ (insert ? ))
+ (delete-region (point) (progn (skip-chars-forward " \t") (point))))
+
+(defun delete-blank-lines ()
+ "On blank line, delete all surrounding blank lines, leaving just one.
+On isolated blank line, delete that one.
+On nonblank line, delete any immediately following blank lines."
+ (interactive "*")
+ (let (thisblank singleblank)
+ (save-excursion
+ (beginning-of-line)
+ (setq thisblank (looking-at "[ \t]*$"))
+ ;; Set singleblank if there is just one blank line here.
+ (setq singleblank
+ (and thisblank
+ (not (looking-at "[ \t]*\n[ \t]*$"))
+ (or (bobp)
+ (progn (forward-line -1)
+ (not (looking-at "[ \t]*$")))))))
+ ;; Delete preceding blank lines, and this one too if it's the only one.
+ (if thisblank
+ (progn
+ (beginning-of-line)
+ (if singleblank (forward-line 1))
+ (delete-region (point)
+ (if (re-search-backward "[^ \t\n]" nil t)
+ (progn (forward-line 1) (point))
+ (point-min)))))
+ ;; Delete following blank lines, unless the current line is blank
+ ;; and there are no following blank lines.
+ (if (not (and thisblank singleblank))
+ (save-excursion
+ (end-of-line)
+ (forward-line 1)
+ (delete-region (point)
+ (if (re-search-forward "[^ \t\n]" nil t)
+ (progn (beginning-of-line) (point))
+ (point-max)))))
+ ;; Handle the special case where point is followed by newline and eob.
+ ;; Delete the line, leaving point at eob.
+ (if (looking-at "^[ \t]*\n\\'")
+ (delete-region (point) (point-max)))))
+
+(defun back-to-indentation ()
+ "Move point to the first non-whitespace character on this line."
+ ;; XEmacs change
+ (interactive "_")
+ (beginning-of-line 1)
+ (skip-chars-forward " \t"))
+
+(defun newline-and-indent ()
+ "Insert a newline, then indent according to major mode.
+Indentation is done using the value of `indent-line-function'.
+In programming language modes, this is the same as TAB.
+In some text modes, where TAB inserts a tab, this command indents to the
+column specified by the function `current-left-margin'."
+ (interactive "*")
+ (delete-region (point) (progn (skip-chars-backward " \t") (point)))
+ (newline)
+ (indent-according-to-mode))
+
+(defun reindent-then-newline-and-indent ()
+ "Reindent current line, insert newline, then indent the new line.
+Indentation of both lines is done according to the current major mode,
+which means calling the current value of `indent-line-function'.
+In programming language modes, this is the same as TAB.
+In some text modes, where TAB inserts a tab, this indents to the
+column specified by the function `current-left-margin'."
+ (interactive "*")
+ (save-excursion
+ (delete-region (point) (progn (skip-chars-backward " \t") (point)))
+ (indent-according-to-mode))
+ (newline)
+ (indent-according-to-mode))
+
+;; Internal subroutine of delete-char
+(defun kill-forward-chars (arg)
+ (if (listp arg) (setq arg (car arg)))
+ (if (eq arg '-) (setq arg -1))
+ (kill-region (point) (+ (point) arg)))
+
+;; Internal subroutine of backward-delete-char
+(defun kill-backward-chars (arg)
+ (if (listp arg) (setq arg (car arg)))
+ (if (eq arg '-) (setq arg -1))
+ (kill-region (point) (- (point) arg)))
+
+(defun backward-delete-char-untabify (arg &optional killp)
+ "Delete characters backward, changing tabs into spaces.
+Delete ARG chars, and kill (save in kill ring) if KILLP is non-nil.
+Interactively, ARG is the prefix arg (default 1)
+and KILLP is t if a prefix arg was specified."
+ (interactive "*p\nP")
+ (let ((count arg))
+ (save-excursion
+ (while (and (> count 0) (not (bobp)))
+ (if (eq (char-before (point)) ?\t) ; XEmacs
+ (let ((col (current-column)))
+ (backward-char 1)
+ (setq col (- col (current-column)))
+ (insert-char ?\ col)
+ (delete-char 1)))
+ (backward-char 1)
+ (setq count (1- count)))))
+ (delete-backward-char arg killp)
+ ;; XEmacs: In overwrite mode, back over columns while clearing them out,
+ ;; unless at end of line.
+ (and overwrite-mode (not (eolp))
+ (save-excursion (insert-char ?\ arg))))
+
+(defcustom delete-key-deletes-forward t
+ "*If non-nil, the DEL key will erase one character forwards.
+If nil, the DEL key will erase one character backwards."
+ :type 'boolean
+ :group 'editing-basics)
+
+(defcustom backward-delete-function 'delete-backward-char
+ "*Function called to delete backwards on a delete keypress.
+If `delete-key-deletes-forward' is nil, `backward-or-forward-delete-char'
+calls this function to erase one character backwards. Default value
+is `delete-backward-char', with `backward-delete-char-untabify' being a
+popular alternate setting."
+ :type 'function
+ :group 'editing-basics)
+
+;; Trash me, baby.
+(defsubst delete-forward-p ()
+ (and delete-key-deletes-forward
+ (or (not (eq (device-type) 'x))
+ (x-keysym-on-keyboard-sans-modifiers-p 'backspace))))
+
+(defun backward-or-forward-delete-char (arg)
+ "Delete either one character backwards or one character forwards.
+Controlled by the state of `delete-key-deletes-forward' and whether the
+BackSpace keysym even exists on your keyboard. If you don't have a
+BackSpace keysym, the delete key should always delete one character
+backwards."
+ (interactive "*p")
+ (if (delete-forward-p)
+ (delete-char arg)
+ (funcall backward-delete-function arg)))
+
+(defun backward-or-forward-kill-word (arg)
+ "Delete either one word backwards or one word forwards.
+Controlled by the state of `delete-key-deletes-forward' and whether the
+BackSpace keysym even exists on your keyboard. If you don't have a
+BackSpace keysym, the delete key should always delete one character
+backwards."
+ (interactive "*p")
+ (if (delete-forward-p)
+ (kill-word arg)
+ (backward-kill-word arg)))
+
+(defun backward-or-forward-kill-sentence (arg)
+ "Delete either one sentence backwards or one sentence forwards.
+Controlled by the state of `delete-key-deletes-forward' and whether the
+BackSpace keysym even exists on your keyboard. If you don't have a
+BackSpace keysym, the delete key should always delete one character
+backwards."
+ (interactive "*P")
+ (if (delete-forward-p)
+ (kill-sentence arg)
+ (backward-kill-sentence (prefix-numeric-value arg))))
+
+(defun backward-or-forward-kill-sexp (arg)
+ "Delete either one sexpr backwards or one sexpr forwards.
+Controlled by the state of `delete-key-deletes-forward' and whether the
+BackSpace keysym even exists on your keyboard. If you don't have a
+BackSpace keysym, the delete key should always delete one character
+backwards."
+ (interactive "*p")
+ (if (delete-forward-p)
+ (kill-sexp arg)
+ (backward-kill-sexp arg)))
+
+(defun zap-to-char (arg char)
+ "Kill up to and including ARG'th occurrence of CHAR.
+Goes backward if ARG is negative; error if CHAR not found."
+ (interactive "*p\ncZap to char: ")
+ (kill-region (point) (with-interactive-search-caps-disable-folding
+ (char-to-string char) nil
+ (search-forward (char-to-string char) nil nil arg)
+ (point))))
+
+(defun zap-up-to-char (arg char)
+ "Kill up to ARG'th occurrence of CHAR.
+Goes backward if ARG is negative; error if CHAR not found."
+ (interactive "*p\ncZap up to char: ")
+ (kill-region (point) (with-interactive-search-caps-disable-folding
+ (char-to-string char) nil
+ (search-forward (char-to-string char) nil nil arg)
+ (goto-char (if (> arg 0) (1- (point)) (1+ (point))))
+ (point))))
+
+(defun beginning-of-buffer (&optional arg)
+ "Move point to the beginning of the buffer; leave mark at previous position.
+With arg N, put point N/10 of the way from the beginning.
+
+If the buffer is narrowed, this command uses the beginning and size
+of the accessible part of the buffer.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details.
+
+Don't use this command in Lisp programs!
+\(goto-char (point-min)) is faster and avoids clobbering the mark."
+ ;; XEmacs change
+ (interactive "_P")
+ (push-mark)
+ (let ((size (- (point-max) (point-min))))
+ (goto-char (if arg
+ (+ (point-min)
+ (if (> size 10000)
+ ;; Avoid overflow for large buffer sizes!
+ (* (prefix-numeric-value arg)
+ (/ size 10))
+ (/ (+ 10 (* size (prefix-numeric-value arg))) 10)))
+ (point-min))))
+ (if arg (forward-line 1)))
+
+(defun end-of-buffer (&optional arg)
+ "Move point to the end of the buffer; leave mark at previous position.
+With arg N, put point N/10 of the way from the end.
+
+If the buffer is narrowed, this command uses the beginning and size
+of the accessible part of the buffer.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details.
+
+Don't use this command in Lisp programs!
+\(goto-char (point-max)) is faster and avoids clobbering the mark."
+ ;; XEmacs change
+ (interactive "_P")
+ (push-mark)
+ ;; XEmacs changes here.
+ (let ((scroll-to-end (not (pos-visible-in-window-p (point-max))))
+ (size (- (point-max) (point-min))))
+ (goto-char (if arg
+ (- (point-max)
+ (if (> size 10000)
+ ;; Avoid overflow for large buffer sizes!
+ (* (prefix-numeric-value arg)
+ (/ size 10))
+ (/ (* size (prefix-numeric-value arg)) 10)))
+ (point-max)))
+ (cond (arg
+ ;; If we went to a place in the middle of the buffer,
+ ;; adjust it to the beginning of a line.
+ (forward-line 1))
+ ;; XEmacs change
+ (scroll-to-end
+ ;; If the end of the buffer is not already on the screen,
+ ;; then scroll specially to put it near, but not at, the bottom.
+ (recenter -3)))))
+
+;; XEmacs (not in FSF)
+(defun mark-beginning-of-buffer (&optional arg)
+ "Push a mark at the beginning of the buffer; leave point where it is.
+With arg N, push mark N/10 of the way from the true beginning."
+ (interactive "P")
+ (push-mark (if arg
+ (if (> (buffer-size) 10000)
+ ;; Avoid overflow for large buffer sizes!
+ (* (prefix-numeric-value arg)
+ (/ (buffer-size) 10))
+ (/ (+ 10 (* (buffer-size) (prefix-numeric-value arg))) 10))
+ (point-min))
+ nil
+ t))
+(define-function 'mark-bob 'mark-beginning-of-buffer)
+
+;; XEmacs (not in FSF)
+(defun mark-end-of-buffer (&optional arg)
+ "Push a mark at the end of the buffer; leave point where it is.
+With arg N, push mark N/10 of the way from the true end."
+ (interactive "P")
+ (push-mark (if arg
+ (- (1+ (buffer-size))
+ (if (> (buffer-size) 10000)
+ ;; Avoid overflow for large buffer sizes!
+ (* (prefix-numeric-value arg)
+ (/ (buffer-size) 10))
+ (/ (* (buffer-size) (prefix-numeric-value arg)) 10)))
+ (point-max))
+ nil
+ t))
+(define-function 'mark-eob 'mark-end-of-buffer)
+
+(defun mark-whole-buffer ()
+ "Put point at beginning and mark at end of buffer.
+You probably should not use this function in Lisp programs;
+it is usually a mistake for a Lisp function to use any subroutine
+that uses or sets the mark."
+ (interactive)
+ (push-mark (point))
+ (push-mark (point-max) nil t)
+ (goto-char (point-min)))
+
+;; XEmacs
+(defun eval-current-buffer (&optional printflag)
+ "Evaluate the current buffer as Lisp code.
+Programs can pass argument PRINTFLAG which controls printing of output:
+nil means discard it; anything else is stream for print."
+ (interactive)
+ (eval-buffer (current-buffer) printflag))
+
+;; XEmacs
+(defun count-words-buffer (&optional buffer)
+ "Print the number of words in BUFFER.
+If called noninteractively, the value is returned rather than printed.
+BUFFER defaults to the current buffer."
+ (interactive)
+ (let ((words (count-words-region (point-min) (point-max) buffer)))
+ (when (interactive-p)
+ (message "Buffer has %d words" words))
+ words))
+
+;; XEmacs
+(defun count-words-region (start end &optional buffer)
+ "Print the number of words in region between START and END in BUFFER.
+If called noninteractively, the value is returned rather than printed.
+BUFFER defaults to the current buffer."
+ (interactive "_r")
+ (save-excursion
+ (set-buffer (or buffer (current-buffer)))
+ (let ((words 0))
+ (goto-char start)
+ (while (< (point) end)
+ (when (forward-word 1)
+ (incf words)))
+ (when (interactive-p)
+ (message "Region has %d words" words))
+ words)))
+
+(defun count-lines-region (start end)
+ "Print number of lines and characters in the region."
+ ;; XEmacs change
+ (interactive "_r")
+ (message "Region has %d lines, %d characters"
+ (count-lines start end) (- end start)))
+
+;; XEmacs
+(defun count-lines-buffer (&optional buffer)
+ "Print number of lines and characters in BUFFER."
+ (interactive)
+ (with-current-buffer (or buffer (current-buffer))
+ (let ((cnt (count-lines (point-min) (point-max))))
+ (message "Buffer has %d lines, %d characters"
+ cnt (- (point-max) (point-min)))
+ cnt)))
+
+;;; Modified by Bob Weiner, 8/24/95, to print narrowed line number also.
+;;; Expanded by Bob Weiner, BeOpen, on 02/12/1997
+(defun what-line ()
+ "Print the following variants of the line number of point:
+ Region line - displayed line within the active region
+ Collapsed line - includes only selectively displayed lines;
+ Buffer line - physical line in the buffer;
+ Narrowed line - line number from the start of the buffer narrowing."
+ ;; XEmacs change
+ (interactive "_")
+ (let ((opoint (point)) start)
+ (save-excursion
+ (save-restriction
+ (if (region-active-p)
+ (goto-char (region-beginning))
+ (goto-char (point-min)))
+ (widen)
+ (beginning-of-line)
+ (setq start (point))
+ (goto-char opoint)
+ (beginning-of-line)
+ (let* ((buffer-line (1+ (count-lines 1 (point))))
+ (narrowed-p (or (/= start 1)
+ (/= (point-max) (1+ (buffer-size)))))
+ (narrowed-line (if narrowed-p (1+ (count-lines start (point)))))
+ (selective-line (if selective-display
+ (1+ (count-lines start (point) t))))
+ (region-line (if (region-active-p)
+ (1+ (count-lines start (point) selective-display)))))
+ (cond (region-line
+ (message "Region line %d; Buffer line %d"
+ region-line buffer-line))
+ ((and narrowed-p selective-line (/= selective-line narrowed-line))
+ ;; buffer narrowed and some lines selectively displayed
+ (message "Collapsed line %d; Buffer line %d; Narrowed line %d"
+ selective-line buffer-line narrowed-line))
+ (narrowed-p
+ ;; buffer narrowed
+ (message "Buffer line %d; Narrowed line %d"
+ buffer-line narrowed-line))
+ ((and selective-line (/= selective-line buffer-line))
+ ;; some lines selectively displayed
+ (message "Collapsed line %d; Buffer line %d"
+ selective-line buffer-line))
+ (t
+ ;; give a basic line count
+ (message "Line %d" buffer-line)))))))
+ (setq zmacs-region-stays t))
+
+;; new in XEmacs 21.2 (not in FSF).
+(defun line-number (&optional pos respect-narrowing)
+ "Return the line number of POS (defaults to point).
+If RESPECT-NARROWING is non-nil, then the narrowed line number is returned;
+otherwise, the absolute line number is returned. The returned line can always
+be given to `goto-line' to get back to the current line."
+ (if (and pos (/= pos (point)))
+ (save-excursion
+ (goto-char pos)
+ (line-number nil respect-narrowing))
+ (1+ (count-lines (if respect-narrowing (point-min) 1) (point-at-bol)))))
+
+(defun count-lines (start end &optional ignore-invisible-lines-flag)
+ "Return number of lines between START and END.
+This is usually the number of newlines between them,
+but can be one more if START is not equal to END
+and the greater of them is not at the start of a line.
+
+With optional IGNORE-INVISIBLE-LINES-FLAG non-nil, lines collapsed with
+selective-display are excluded from the line count.
+
+NOTE: The expression to return the current line number is not obvious:
+
+(1+ (count-lines 1 (point-at-bol)))
+
+See also `line-number'."
+ (save-excursion
+ (save-restriction
+ (narrow-to-region start end)
+ (goto-char (point-min))
+ (if (and (not ignore-invisible-lines-flag) (eq selective-display t))
+ (save-match-data
+ (let ((done 0))
+ (while (re-search-forward "[\n\C-m]" nil t 40)
+ (setq done (+ 40 done)))
+ (while (re-search-forward "[\n\C-m]" nil t 1)
+ (setq done (+ 1 done)))
+ (goto-char (point-max))
+ (if (and (/= start end)
+ (not (bolp)))
+ (1+ done)
+ done)))
+ (- (buffer-size) (forward-line (buffer-size)))))))
+
+(defun what-cursor-position ()
+ "Print info on cursor position (on screen and within buffer)."
+ ;; XEmacs change
+ (interactive "_")
+ (let* ((char (char-after (point))) ; XEmacs
+ (beg (point-min))
+ (end (point-max))
+ (pos (point))
+ (total (buffer-size))
+ (percent (if (> total 50000)
+ ;; Avoid overflow from multiplying by 100!
+ (/ (+ (/ total 200) (1- pos)) (max (/ total 100) 1))
+ (/ (+ (/ total 2) (* 100 (1- pos))) (max total 1))))
+ (hscroll (if (= (window-hscroll) 0)
+ ""
+ (format " Hscroll=%d" (window-hscroll))))
+ (col (+ (current-column) (if column-number-start-at-one 1 0))))
+ (if (= pos end)
+ (if (or (/= beg 1) (/= end (1+ total)))
+ (message "point=%d of %d(%d%%) <%d - %d> column %d %s"
+ pos total percent beg end col hscroll)
+ (message "point=%d of %d(%d%%) column %d %s"
+ pos total percent col hscroll))
+ ;; XEmacs: don't use single-key-description
+ (if (or (/= beg 1) (/= end (1+ total)))
+ (message "Char: %s (0%o, %d, 0x%x) point=%d of %d(%d%%) <%d - %d> column %d %s"
+ (text-char-description char) char char char pos total
+ percent beg end col hscroll)
+ (message "Char: %s (0%o, %d, 0x%x) point=%d of %d(%d%%) column %d %s"
+ (text-char-description char) char char char pos total
+ percent col hscroll)))))
+
+(defun fundamental-mode ()
+ "Major mode not specialized for anything in particular.
+Other major modes are defined by comparison with this one."
+ (interactive)
+ (kill-all-local-variables))
+
+;; XEmacs the following are declared elsewhere
+;(defvar read-expression-map (cons 'keymap minibuffer-local-map)
+; "Minibuffer keymap used for reading Lisp expressions.")
+;(define-key read-expression-map "\M-\t" 'lisp-complete-symbol)
+
+;(put 'eval-expression 'disabled t)
+
+;(defvar read-expression-history nil)
+
+;; We define this, rather than making `eval' interactive,
+;; for the sake of completion of names like eval-region, eval-current-buffer.
+(defun eval-expression (expression &optional eval-expression-insert-value)
+ "Evaluate EXPRESSION and print value in minibuffer.
+Value is also consed on to front of the variable `values'.
+With prefix argument, insert the result to the current buffer."
+ ;(interactive "xEval: ")
+ (interactive
+ (list (read-from-minibuffer "Eval: "
+ nil read-expression-map t
+ 'read-expression-history)
+ current-prefix-arg))
+ (setq values (cons (eval expression) values))
+ (prin1 (car values)
+ (if eval-expression-insert-value (current-buffer) t)))
+
+;; XEmacs -- extra parameter (variant, but equivalent logic)
+(defun edit-and-eval-command (prompt form &optional history)
+ "Prompting with PROMPT, let user edit FORM and eval result.
+FORM is a Lisp expression. Let user edit that expression in
+the minibuffer, then read and evaluate the result."
+ (let ((form (read-expression prompt
+ ;; first try to format the thing readably;
+ ;; and if that fails, print it normally.
+ (condition-case ()
+ (let ((print-readably t))
+ (prin1-to-string form))
+ (error (prin1-to-string form)))
+ (or history '(command-history . 1)))))
+ (or history (setq history 'command-history))
+ (if (consp history)
+ (setq history (car history)))
+ (if (eq history t)
+ nil
+ ;; If form was added to the history as a string,
+ ;; get rid of that. We want only evallable expressions there.
+ (if (stringp (car (symbol-value history)))
+ (set history (cdr (symbol-value history))))
+
+ ;; If form to be redone does not match front of history,
+ ;; add it to the history.
+ (or (equal form (car (symbol-value history)))
+ (set history (cons form (symbol-value history)))))
+ (eval form)))
+
+(defun repeat-complex-command (arg)
+ "Edit and re-evaluate last complex command, or ARGth from last.
+A complex command is one which used the minibuffer.
+The command is placed in the minibuffer as a Lisp form for editing.
+The result is executed, repeating the command as changed.
+If the command has been changed or is not the most recent previous command
+it is added to the front of the command history.
+You can use the minibuffer history commands \\<minibuffer-local-map>\\[next-history-element] and \\[previous-history-element]
+to get different commands to edit and resubmit."
+ (interactive "p")
+ ;; XEmacs: It looks like our version is better -sb
+ (let ((print-level nil))
+ (edit-and-eval-command "Redo: "
+ (or (nth (1- arg) command-history)
+ (error ""))
+ (cons 'command-history arg))))
+
+;; XEmacs: Functions moved to minibuf.el
+;; previous-matching-history-element
+;; next-matching-history-element
+;; next-history-element
+;; previous-history-element
+;; next-complete-history-element
+;; previous-complete-history-element
+\f
+(defun goto-line (line)
+ "Goto line LINE, counting from line 1 at beginning of buffer."
+ (interactive "NGoto line: ")
+ (setq line (prefix-numeric-value line))
+ (save-restriction
+ (widen)
+ (goto-char 1)
+ (if (eq selective-display t)
+ (re-search-forward "[\n\C-m]" nil 'end (1- line))
+ (forward-line (1- line)))))
+
+;Put this on C-x u, so we can force that rather than C-_ into startup msg
+(define-function 'advertised-undo 'undo)
+
+(defun undo (&optional count)
+ "Undo some previous changes.
+Repeat this command to undo more changes.
+A numeric argument serves as a repeat count."
+ (interactive "*p")
+ ;; If we don't get all the way through, make last-command indicate that
+ ;; for the following command.
+ (setq this-command t)
+ (let ((modified (buffer-modified-p))
+ (recent-save (recent-auto-save-p)))
+ (or (eq (selected-window) (minibuffer-window))
+ (display-message 'command "Undo!"))
+ (or (and (eq last-command 'undo)
+ (eq (current-buffer) last-undo-buffer)) ; XEmacs
+ (progn (undo-start)
+ (undo-more 1)))
+ (undo-more (or count 1))
+ ;; Don't specify a position in the undo record for the undo command.
+ ;; Instead, undoing this should move point to where the change is.
+ (let ((tail buffer-undo-list)
+ done)
+ (while (and tail (not done) (not (null (car tail))))
+ (if (integerp (car tail))
+ (progn
+ (setq done t)
+ (setq buffer-undo-list (delq (car tail) buffer-undo-list))))
+ (setq tail (cdr tail))))
+ (and modified (not (buffer-modified-p))
+ (delete-auto-save-file-if-necessary recent-save)))
+ ;; If we do get all the way through, make this-command indicate that.
+ (setq this-command 'undo))
+
+(defvar pending-undo-list nil
+ "Within a run of consecutive undo commands, list remaining to be undone.")
+
+(defvar last-undo-buffer nil) ; XEmacs
+
+(defun undo-start ()
+ "Set `pending-undo-list' to the front of the undo list.
+The next call to `undo-more' will undo the most recently made change."
+ (if (eq buffer-undo-list t)
+ (error "No undo information in this buffer"))
+ (setq pending-undo-list buffer-undo-list))
+
+(defun undo-more (count)
+ "Undo back N undo-boundaries beyond what was already undone recently.
+Call `undo-start' to get ready to undo recent changes,
+then call `undo-more' one or more times to undo them."
+ (or pending-undo-list
+ (error "No further undo information"))
+ (setq pending-undo-list (primitive-undo count pending-undo-list)
+ last-undo-buffer (current-buffer))) ; XEmacs
+
+;; XEmacs
+(defun call-with-transparent-undo (fn &rest args)
+ "Apply FN to ARGS, and then undo all changes made by FN to the current
+buffer. The undo records are processed even if FN returns non-locally.
+There is no trace of the changes made by FN in the buffer's undo history.
+
+You can use this in a write-file-hooks function with continue-save-buffer
+to make the contents of a disk file differ from its in-memory buffer."
+ (let ((buffer-undo-list nil)
+ ;; Kludge to prevent undo list truncation:
+ (undo-high-threshold -1)
+ (undo-threshold -1)
+ (obuffer (current-buffer)))
+ (unwind-protect
+ (apply fn args)
+ ;; Go to the buffer we will restore and make it writable:
+ (set-buffer obuffer)
+ (save-excursion
+ (let ((buffer-read-only nil))
+ (save-restriction
+ (widen)
+ ;; Perform all undos, with further undo logging disabled:
+ (let ((tail buffer-undo-list))
+ (setq buffer-undo-list t)
+ (while tail
+ (setq tail (primitive-undo (length tail) tail))))))))))
+
+;; XEmacs: The following are in other files
+;; shell-command-history
+;; shell-command-switch
+;; shell-command
+;; shell-command-sentinel
+
+\f
+(defconst universal-argument-map
+ (let ((map (make-sparse-keymap)))
+ (set-keymap-default-binding map 'universal-argument-other-key)
+ ;FSFmacs (define-key map [switch-frame] nil)
+ (define-key map [(t)] 'universal-argument-other-key)
+ (define-key map [(meta t)] 'universal-argument-other-key)
+ (define-key map [(control u)] 'universal-argument-more)
+ (define-key map [?-] 'universal-argument-minus)
+ (define-key map [?0] 'digit-argument)
+ (define-key map [?1] 'digit-argument)
+ (define-key map [?2] 'digit-argument)
+ (define-key map [?3] 'digit-argument)
+ (define-key map [?4] 'digit-argument)
+ (define-key map [?5] 'digit-argument)
+ (define-key map [?6] 'digit-argument)
+ (define-key map [?7] 'digit-argument)
+ (define-key map [?8] 'digit-argument)
+ (define-key map [?9] 'digit-argument)
+ map)
+ "Keymap used while processing \\[universal-argument].")
+
+(defvar universal-argument-num-events nil
+ "Number of argument-specifying events read by `universal-argument'.
+`universal-argument-other-key' uses this to discard those events
+from (this-command-keys), and reread only the final command.")
+
+(defun universal-argument ()
+ "Begin a numeric argument for the following command.
+Digits or minus sign following \\[universal-argument] make up the numeric argument.
+\\[universal-argument] following the digits or minus sign ends the argument.
+\\[universal-argument] without digits or minus sign provides 4 as argument.
+Repeating \\[universal-argument] without digits or minus sign
+ multiplies the argument by 4 each time."
+ (interactive)
+ (setq prefix-arg (list 4))
+ (setq zmacs-region-stays t) ; XEmacs
+ (setq universal-argument-num-events (length (this-command-keys)))
+ (setq overriding-terminal-local-map universal-argument-map))
+
+;; A subsequent C-u means to multiply the factor by 4 if we've typed
+;; nothing but C-u's; otherwise it means to terminate the prefix arg.
+(defun universal-argument-more (arg)
+ (interactive "_P") ; XEmacs
+ (if (consp arg)
+ (setq prefix-arg (list (* 4 (car arg))))
+ (setq prefix-arg arg)
+ (setq overriding-terminal-local-map nil))
+ (setq universal-argument-num-events (length (this-command-keys))))
+
+(defun negative-argument (arg)
+ "Begin a negative numeric argument for the next command.
+\\[universal-argument] following digits or minus sign ends the argument."
+ (interactive "_P") ; XEmacs
+ (cond ((integerp arg)
+ (setq prefix-arg (- arg)))
+ ((eq arg '-)
+ (setq prefix-arg nil))
+ (t
+ (setq prefix-arg '-)))
+ (setq universal-argument-num-events (length (this-command-keys)))
+ (setq overriding-terminal-local-map universal-argument-map))
+
+;; XEmacs: This function not synched with FSF
+(defun digit-argument (arg)
+ "Part of the numeric argument for the next command.
+\\[universal-argument] following digits or minus sign ends the argument."
+ (interactive "_P") ; XEmacs
+ (let* ((event last-command-event)
+ (key (and (key-press-event-p event)
+ (event-key event)))
+ (digit (and key (characterp key) (>= key ?0) (<= key ?9)
+ (- key ?0))))
+ (if (null digit)
+ (universal-argument-other-key arg)
+ (cond ((integerp arg)
+ (setq prefix-arg (+ (* arg 10)
+ (if (< arg 0) (- digit) digit))))
+ ((eq arg '-)
+ ;; Treat -0 as just -, so that -01 will work.
+ (setq prefix-arg (if (zerop digit) '- (- digit))))
+ (t
+ (setq prefix-arg digit)))
+ (setq universal-argument-num-events (length (this-command-keys)))
+ (setq overriding-terminal-local-map universal-argument-map))))
+
+;; For backward compatibility, minus with no modifiers is an ordinary
+;; command if digits have already been entered.
+(defun universal-argument-minus (arg)
+ (interactive "_P") ; XEmacs
+ (if (integerp arg)
+ (universal-argument-other-key arg)
+ (negative-argument arg)))
+
+;; Anything else terminates the argument and is left in the queue to be
+;; executed as a command.
+(defun universal-argument-other-key (arg)
+ (interactive "_P") ; XEmacs
+ (setq prefix-arg arg)
+ (let* ((key (this-command-keys))
+ ;; FSF calls silly function `listify-key-sequence' here.
+ (keylist (append key nil)))
+ (setq unread-command-events
+ (append (nthcdr universal-argument-num-events keylist)
+ unread-command-events)))
+ (reset-this-command-lengths)
+ (setq overriding-terminal-local-map nil))
+
+\f
+;; XEmacs -- keep zmacs-region active.
+(defun forward-to-indentation (count)
+ "Move forward COUNT lines and position at first nonblank character."
+ (interactive "_p")
+ (forward-line count)
+ (skip-chars-forward " \t"))
+
+(defun backward-to-indentation (count)
+ "Move backward COUNT lines and position at first nonblank character."
+ (interactive "_p")
+ (forward-line (- count))
+ (skip-chars-forward " \t"))
+
+(defcustom kill-whole-line nil
+ "*If non-nil, kill the whole line if point is at the beginning.
+Otherwise, `kill-line' kills only up to the end of the line, but not
+the terminating newline.
+
+WARNING: This is a misnamed variable! It should be called something
+like `kill-whole-line-when-at-beginning'. If you simply want
+\\[kill-line] to kill the entire current line, bind it to the function
+`kill-entire-line'. "
+ :type 'boolean
+ :group 'killing)
+
+(defun kill-line-1 (arg entire-line)
+ (kill-region (if entire-line
+ (save-excursion
+ (beginning-of-line)
+ (point))
+ (point))
+ ;; Don't shift point before doing the delete; that way,
+ ;; undo will record the right position of point.
+;; FSF
+; ;; It is better to move point to the other end of the kill
+; ;; before killing. That way, in a read-only buffer, point
+; ;; moves across the text that is copied to the kill ring.
+; ;; The choice has no effect on undo now that undo records
+; ;; the value of point from before the command was run.
+; (progn
+ (save-excursion
+ (if arg
+ (forward-line (prefix-numeric-value arg))
+ (if (eobp)
+ (signal 'end-of-buffer nil))
+ (if (or (looking-at "[ \t]*$")
+ (or entire-line
+ (and kill-whole-line (bolp))))
+ (forward-line 1)
+ (end-of-line)))
+ (point))))
+
+(defun kill-entire-line (&optional arg)
+ "Kill the entire line.
+With prefix argument, kill that many lines from point. Negative
+arguments kill lines backward.
+
+When calling from a program, nil means \"no arg\",
+a number counts as a prefix arg."
+ (interactive "*P")
+ (kill-line-1 arg t))
+
+(defun kill-line (&optional arg)
+ "Kill the rest of the current line, or the entire line.
+If no nonblanks there, kill thru newline. If called interactively,
+may kill the entire line when given no argument at the beginning of a
+line; see `kill-whole-line'. With prefix argument, kill that many
+lines from point. Negative arguments kill lines backward.
+
+WARNING: This is a misnamed function! It should be called something
+like `kill-to-end-of-line'. If you simply want to kill the entire
+current line, use `kill-entire-line'.
+
+When calling from a program, nil means \"no arg\",
+a number counts as a prefix arg."
+ (interactive "*P")
+ (kill-line-1 arg nil))
+
+;; XEmacs
+(defun backward-kill-line nil
+ "Kill back to the beginning of the line."
+ (interactive)
+ (let ((point (point)))
+ (beginning-of-line nil)
+ (kill-region (point) point)))
+
+\f
+;;;; Window system cut and paste hooks.
+;;;
+;;; I think that kill-hooks is a better name and more general mechanism
+;;; than interprogram-cut-function (from FSFmacs). I don't like the behavior
+;;; of interprogram-paste-function: ^Y should always come from the kill ring,
+;;; not the X selection. But if that were provided, it should be called (and
+;;; behave as) yank-hooks instead. -- jwz
+
+;; [... code snipped ...]
+
+(defcustom kill-hooks nil
+ "*Functions run when something is added to the XEmacs kill ring.
+These functions are called with one argument, the string most recently
+cut or copied. You can use this to, for example, make the most recent
+kill become the X Clipboard selection."
+ :type 'hook
+ :group 'killing)
+
+;;; `kill-hooks' seems not sufficient because
+;;; `interprogram-cut-function' requires more variable about to rotate
+;;; the cut buffers. I'm afraid to change interface of `kill-hooks',
+;;; so I add it. (1997-11-03 by MORIOKA Tomohiko)
+
+(defcustom interprogram-cut-function 'own-clipboard
+ "Function to call to make a killed region available to other programs.
+
+Most window systems provide some sort of facility for cutting and
+pasting text between the windows of different programs.
+This variable holds a function that Emacs calls whenever text
+is put in the kill ring, to make the new kill available to other
+programs.
+
+The function takes one or two arguments.
+The first argument, TEXT, is a string containing
+the text which should be made available.
+The second, PUSH, if non-nil means this is a \"new\" kill;
+nil means appending to an \"old\" kill.
+
+One reasonable choice is `own-clipboard' (the default)."
+ :type '(radio (function-item :tag "Send to Clipboard"
+ :format "%t\n"
+ own-clipboard)
+ (const :tag "None" nil)
+ (function :tag "Other"))
+ :group 'killing)
+
+(defcustom interprogram-paste-function 'get-clipboard-foreign
+ "Function to call to get text cut from other programs.
+
+Most window systems provide some sort of facility for cutting and
+pasting text between the windows of different programs.
+This variable holds a function that Emacs calls to obtain
+text that other programs have provided for pasting.
+
+The function should be called with no arguments. If the function
+returns nil, then no other program has provided such text, and the top
+of the Emacs kill ring should be used. If the function returns a
+string, that string should be put in the kill ring as the latest kill.
+
+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.
+
+Reasonable choices include `get-clipboard-foreign' (the default), and
+functions calling `get-selection-foreign' (q.v.)."
+ :type '(radio (function-item :tag "Get from Clipboard"
+ :format "%t\n"
+ get-clipboard-foreign)
+ (const :tag "None" nil)
+ (function :tag "Other"))
+ :group 'killing)
+
+\f
+;;;; The kill ring data structure.
+
+(defvar kill-ring nil
+ "List of killed text sequences.
+Since the kill ring is supposed to interact nicely with cut-and-paste
+facilities offered by window systems, use of this variable should
+interact nicely with `interprogram-cut-function' and
+`interprogram-paste-function'. The functions `kill-new',
+`kill-append', and `current-kill' are supposed to implement this
+interaction; you may want to use them instead of manipulating the kill
+ring directly.")
+
+(defcustom kill-ring-max 30
+ "*Maximum length of kill ring before oldest elements are thrown away."
+ :type 'integer
+ :group 'killing)
+
+(defvar kill-ring-yank-pointer nil
+ "The tail of the kill ring whose car is the last thing yanked.")
+
+(defun kill-new (string &optional replace)
+ "Make STRING the latest kill in the kill ring.
+Set `kill-ring-yank-pointer' to point to it.
+Run `kill-hooks'.
+Optional second argument REPLACE non-nil means that STRING will replace
+the front of the kill ring, rather than being added to the list."
+; (and (fboundp 'menu-bar-update-yank-menu)
+; (menu-bar-update-yank-menu string (and replace (car kill-ring))))
+ (if replace
+ (setcar kill-ring string)
+ (setq kill-ring (cons string kill-ring))
+ (if (> (length kill-ring) kill-ring-max)
+ (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil)))
+ (setq kill-ring-yank-pointer kill-ring)
+ (if interprogram-cut-function
+ (funcall interprogram-cut-function string (not replace)))
+ (run-hook-with-args 'kill-hooks string))
+
+(defun kill-append (string before-p)
+ "Append STRING to the end of the latest kill in the kill ring.
+If BEFORE-P is non-nil, prepend STRING to the kill.
+Run `kill-hooks'."
+ (kill-new (if before-p
+ (concat string (car kill-ring))
+ (concat (car kill-ring) string)) t))
+
+(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."
+ (let ((interprogram-paste (and (= n 0)
+ interprogram-paste-function
+ (funcall interprogram-paste-function))))
+ (if interprogram-paste
+ (progn
+ ;; Disable the interprogram cut function when we add the new
+ ;; 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)
+ (or kill-ring (error "Kill ring is empty"))
+ (let* ((tem (nthcdr (mod (- n (length kill-ring-yank-pointer))
+ (length kill-ring))
+ kill-ring)))
+ (or do-not-move
+ (setq kill-ring-yank-pointer tem))
+ (car tem)))))
+
+
+\f
+;;;; Commands for manipulating the kill ring.
+
+;; In FSF killing read-only text just pastes it into kill-ring. Which
+;; is a very bad idea -- see Jamie's comment below.
+
+;(defvar kill-read-only-ok nil
+; "*Non-nil means don't signal an error for killing read-only text.")
+
+(defun kill-region (start end &optional verbose) ; verbose is XEmacs addition
+ "Kill between point and mark.
+The text is deleted but saved in the kill ring.
+The command \\[yank] can retrieve it from there.
+\(If you want to kill and then yank immediately, use \\[copy-region-as-kill].)
+
+This is the primitive for programs to kill text (as opposed to deleting it).
+Supply two arguments, character numbers indicating the stretch of text
+ to be killed.
+Any command that calls this function is a \"kill command\".
+If the previous command was also a kill command,
+the text killed this time appends to the text killed last time
+to make one entry in the kill ring."
+ (interactive "*r\np")
+; (interactive
+; (let ((region-hack (and zmacs-regions (eq last-command 'yank))))
+; ;; This lets "^Y^W" work. I think this is dumb, but zwei did it.
+; (if region-hack (zmacs-activate-region))
+; (prog1
+; (list (point) (mark) current-prefix-arg)
+; (if region-hack (zmacs-deactivate-region)))))
+ ;; start and end can be markers but the rest of this function is
+ ;; written as if they are only integers
+ (if (markerp start) (setq start (marker-position start)))
+ (if (markerp end) (setq end (marker-position end)))
+ (or (and start end) (if zmacs-regions ;; rewritten for I18N3 snarfing
+ (error "The region is not active now")
+ (error "The mark is not set now")))
+ (if verbose (if buffer-read-only
+ (lmessage 'command "Copying %d characters"
+ (- (max start end) (min start end)))
+ (lmessage 'command "Killing %d characters"
+ (- (max start end) (min start end)))))
+ (cond
+
+ ;; I don't like this large change in behavior -- jwz
+ ;; Read-Only text means it shouldn't be deleted, so I'm restoring
+ ;; this code, but only for text-properties and not full extents. -sb
+ ;; If the buffer is read-only, we should beep, in case the person
+ ;; just isn't aware of this. However, there's no harm in putting
+ ;; the region's text in the kill ring, anyway.
+ ((or (and buffer-read-only (not inhibit-read-only))
+ (text-property-not-all (min start end) (max start end) 'read-only nil))
+ ;; This is redundant.
+ ;; (if verbose (message "Copying %d characters"
+ ;; (- (max start end) (min start end))))
+ (copy-region-as-kill start end)
+ ;; ;; This should always barf, and give us the correct error.
+ ;; (if kill-read-only-ok
+ ;; (message "Read only text copied to kill ring")
+ (setq this-command 'kill-region)
+ (barf-if-buffer-read-only)
+ (signal 'buffer-read-only (list (current-buffer))))
+
+ ;; In certain cases, we can arrange for the undo list and the kill
+ ;; ring to share the same string object. This code does that.
+ ((not (or (eq buffer-undo-list t)
+ (eq last-command 'kill-region)
+ ;; Use = since positions may be numbers or markers.
+ (= start end)))
+ ;; Don't let the undo list be truncated before we can even access it.
+ ;; FSF calls this `undo-strong-limit'
+ (let ((undo-high-threshold (+ (- end start) 100))
+ ;(old-list buffer-undo-list)
+ tail)
+ (delete-region start end)
+ ;; Search back in buffer-undo-list for this string,
+ ;; in case a change hook made property changes.
+ (setq tail buffer-undo-list)
+ (while (and tail
+ (not (stringp (car-safe (car-safe tail))))) ; XEmacs
+ (pop tail))
+ ;; Take the same string recorded for undo
+ ;; and put it in the kill-ring.
+ (and tail
+ (kill-new (car (car tail))))))
+
+ (t
+ ;; if undo is not kept, grab the string then delete it (which won't
+ ;; add another string to the undo list).
+ (copy-region-as-kill start end)
+ (delete-region start end)))
+ (setq this-command 'kill-region))
+
+;; copy-region-as-kill no longer sets this-command, because it's confusing
+;; to get two copies of the text when the user accidentally types M-w and
+;; then corrects it with the intended C-w.
+(defun copy-region-as-kill (start end)
+ "Save the region as if killed, but don't kill it.
+Run `kill-hooks'."
+ (interactive "r")
+ (if (eq last-command 'kill-region)
+ (kill-append (buffer-substring start end) (< end start))
+ (kill-new (buffer-substring start end)))
+ nil)
+
+(defun kill-ring-save (start end)
+ "Save the region as if killed, but don't kill it.
+This command is similar to `copy-region-as-kill', except that it gives
+visual feedback indicating the extent of the region being copied."
+ (interactive "r")
+ (copy-region-as-kill start end)
+ ;; copy before delay, for xclipboard's benefit
+ (if (interactive-p)
+ (let ((other-end (if (= (point) start) end start))
+ (opoint (point))
+ ;; Inhibit quitting so we can make a quit here
+ ;; look like a C-g typed as a command.
+ (inhibit-quit t))
+ (if (pos-visible-in-window-p other-end (selected-window))
+ (progn
+ ;; FSF (I'm not sure what this does -sb)
+; ;; Swap point and mark.
+; (set-marker (mark-marker) (point) (current-buffer))
+ (goto-char other-end)
+ (sit-for 1)
+; ;; Swap back.
+; (set-marker (mark-marker) other-end (current-buffer))
+ (goto-char opoint)
+ ;; If user quit, deactivate the mark
+ ;; as C-g would as a command.
+ (and quit-flag (mark)
+ (zmacs-deactivate-region)))
+ ;; too noisy. -- jwz
+; (let* ((killed-text (current-kill 0))
+; (message-len (min (length killed-text) 40)))
+; (if (= (point) start)
+; ;; Don't say "killed"; that is misleading.
+; (message "Saved text until \"%s\""
+; (substring killed-text (- message-len)))
+; (message "Saved text from \"%s\""
+; (substring killed-text 0 message-len))))
+ ))))
+
+(defun append-next-kill ()
+ "Cause following command, if it kills, to append to previous kill."
+ ;; XEmacs
+ (interactive "_")
+ (if (interactive-p)
+ (progn
+ (setq this-command 'kill-region)
+ (display-message 'command
+ "If the next command is a kill, it will append"))
+ (setq last-command 'kill-region)))
+
+(defun yank-pop (arg)
+ "Replace just-yanked stretch of killed text with a different stretch.
+This command is allowed only immediately after a `yank' or a `yank-pop'.
+At such a time, the region contains a stretch of reinserted
+previously-killed text. `yank-pop' deletes that text and inserts in its
+place a different stretch of killed text.
+
+With no argument, the previous kill is inserted.
+With argument N, insert the Nth previous kill.
+If N is negative, this is a more recent kill.
+
+The sequence of kills wraps around, so that after the oldest one
+comes the newest one."
+ (interactive "*p")
+ (if (not (eq last-command 'yank))
+ (error "Previous command was not a yank"))
+ (setq this-command 'yank)
+ (let ((inhibit-read-only t)
+ (before (< (point) (mark t))))
+ (delete-region (point) (mark t))
+ ;;(set-marker (mark-marker) (point) (current-buffer))
+ (set-mark (point))
+ (insert (current-kill arg))
+ (if before
+ ;; This is like exchange-point-and-mark, but doesn't activate the mark.
+ ;; It is cleaner to avoid activation, even though the command
+ ;; loop would deactivate the mark because we inserted text.
+ (goto-char (prog1 (mark t)
+ (set-marker (mark-marker t) (point) (current-buffer))))))
+ nil)
+
+
+(defun yank (&optional arg)
+ "Reinsert the last stretch of killed text.
+More precisely, reinsert the stretch of killed text most recently
+killed OR yanked. Put point at end, and set mark at beginning.
+With just C-u as argument, same but put point at beginning (and mark at end).
+With argument N, reinsert the Nth most recently killed stretch of killed
+text.
+See also the command \\[yank-pop]."
+ (interactive "*P")
+ ;; If we don't get all the way through, make last-command indicate that
+ ;; for the following command.
+ (setq this-command t)
+ (push-mark (point))
+ (insert (current-kill (cond
+ ((listp arg) 0)
+ ((eq arg '-) -1)
+ (t (1- arg)))))
+ (if (consp arg)
+ ;; This is like exchange-point-and-mark, but doesn't activate the mark.
+ ;; It is cleaner to avoid activation, even though the command
+ ;; loop would deactivate the mark because we inserted text.
+ ;; (But it's an unnecessary kludge in XEmacs.)
+ ;(goto-char (prog1 (mark t)
+ ;(set-marker (mark-marker) (point) (current-buffer)))))
+ (exchange-point-and-mark t))
+ ;; If we do get all the way thru, make this-command indicate that.
+ (setq this-command 'yank)
+ nil)
+
+(defun rotate-yank-pointer (arg)
+ "Rotate the yanking point in the kill ring.
+With argument, rotate that many kills forward (or backward, if negative)."
+ (interactive "p")
+ (current-kill arg))
+
+\f
+(defun insert-buffer (buffer)
+ "Insert after point the contents of BUFFER.
+Puts mark after the inserted text.
+BUFFER may be a buffer or a buffer name."
+ (interactive
+ (list
+ (progn
+ (barf-if-buffer-read-only)
+ (read-buffer "Insert buffer: "
+ ;; XEmacs: we have different args
+ (other-buffer (current-buffer) nil t)
+ t))))
+ (or (bufferp buffer)
+ (setq buffer (get-buffer buffer)))
+ (let (start end newmark)
+ (save-excursion
+ (save-excursion
+ (set-buffer buffer)
+ (setq start (point-min) end (point-max)))
+ (insert-buffer-substring buffer start end)
+ (setq newmark (point)))
+ (push-mark newmark))
+ nil)
+
+(defun append-to-buffer (buffer start end)
+ "Append to specified buffer the text of the region.
+It is inserted into that buffer before its point.
+
+When calling from a program, give three arguments:
+BUFFER (or buffer name), START and END.
+START and END specify the portion of the current buffer to be copied."
+ (interactive
+ ;; XEmacs: we have different args to other-buffer
+ (list (read-buffer "Append to buffer: " (other-buffer (current-buffer)
+ nil t))
+ (region-beginning) (region-end)))
+ (let ((oldbuf (current-buffer)))
+ (save-excursion
+ (set-buffer (get-buffer-create buffer))
+ (insert-buffer-substring oldbuf start end))))
+
+(defun prepend-to-buffer (buffer start end)
+ "Prepend to specified buffer the text of the region.
+It is inserted into that buffer after its point.
+
+When calling from a program, give three arguments:
+BUFFER (or buffer name), START and END.
+START and END specify the portion of the current buffer to be copied."
+ (interactive "BPrepend to buffer: \nr")
+ (let ((oldbuf (current-buffer)))
+ (save-excursion
+ (set-buffer (get-buffer-create buffer))
+ (save-excursion
+ (insert-buffer-substring oldbuf start end)))))
+
+(defun copy-to-buffer (buffer start end)
+ "Copy to specified buffer the text of the region.
+It is inserted into that buffer, replacing existing text there.
+
+When calling from a program, give three arguments:
+BUFFER (or buffer name), START and END.
+START and END specify the portion of the current buffer to be copied."
+ (interactive "BCopy to buffer: \nr")
+ (let ((oldbuf (current-buffer)))
+ (save-excursion
+ (set-buffer (get-buffer-create buffer))
+ (erase-buffer)
+ (save-excursion
+ (insert-buffer-substring oldbuf start end)))))
+\f
+;FSFmacs
+;(put 'mark-inactive 'error-conditions '(mark-inactive error))
+;(put 'mark-inactive 'error-message "The mark is not active now")
+
+(defun mark (&optional force buffer)
+ "Return this buffer's mark value as integer, or nil if no mark.
+
+If `zmacs-regions' is true, then this returns nil unless the region is
+currently in the active (highlighted) state. With an argument of t, this
+returns the mark (if there is one) regardless of the active-region state.
+You should *generally* not use the mark unless the region is active, if
+the user has expressed a preference for the active-region model.
+
+If you are using this in an editing command, you are most likely making
+a mistake; see the documentation of `set-mark'."
+ (setq buffer (decode-buffer buffer))
+;FSFmacs version:
+; (if (or force (not transient-mark-mode) mark-active mark-even-if-inactive)
+; (marker-position (mark-marker))
+; (signal 'mark-inactive nil)))
+ (let ((m (mark-marker force buffer)))
+ (and m (marker-position m))))
+
+;;;#### FSFmacs
+;;; Many places set mark-active directly, and several of them failed to also
+;;; run deactivate-mark-hook. This shorthand should simplify.
+;(defsubst deactivate-mark ()
+; "Deactivate the mark by setting `mark-active' to nil.
+;\(That makes a difference only in Transient Mark mode.)
+;Also runs the hook `deactivate-mark-hook'."
+; (if transient-mark-mode
+; (progn
+; (setq mark-active nil)
+; (run-hooks 'deactivate-mark-hook))))
+
+(defun set-mark (pos &optional buffer)
+ "Set this buffer's mark to POS. Don't use this function!
+That is to say, don't use this function unless you want
+the user to see that the mark has moved, and you want the previous
+mark position to be lost.
+
+Normally, when a new mark is set, the old one should go on the stack.
+This is why most applications should use `push-mark', not `set-mark'.
+
+Novice Emacs Lisp programmers often try to use the mark for the wrong
+purposes. The mark saves a location for the user's convenience.
+Most editing commands should not alter the mark.
+To remember a location for internal use in the Lisp program,
+store it in a Lisp variable. Example:
+
+ (let ((start (point))) (forward-line 1) (delete-region start (point)))."
+
+ (setq buffer (decode-buffer buffer))
+ (set-marker (mark-marker t buffer) pos buffer))
+;; FSF
+; (if pos
+; (progn
+; (setq mark-active t)
+; (run-hooks 'activate-mark-hook)
+; (set-marker (mark-marker) pos (current-buffer)))
+; ;; Normally we never clear mark-active except in Transient Mark mode.
+; ;; But when we actually clear out the mark value too,
+; ;; we must clear mark-active in any mode.
+; (setq mark-active nil)
+; (run-hooks 'deactivate-mark-hook)
+; (set-marker (mark-marker) nil)))
+
+(defvar mark-ring nil
+ "The list of former marks of the current buffer, most recent first.
+This variable is automatically buffer-local.")
+(make-variable-buffer-local 'mark-ring)
+(put 'mark-ring 'permanent-local t)
+
+(defvar dont-record-current-mark nil
+ "If set to t, the current mark value should not be recorded on the mark ring.
+This is set by commands that manipulate the mark incidentally, to avoid
+cluttering the mark ring unnecessarily. Under most circumstances, you do
+not need to set this directly; it is automatically reset each time
+`push-mark' is called, according to `mark-ring-unrecorded-commands'. This
+variable is automatically buffer-local.")
+(make-variable-buffer-local 'dont-record-current-mark)
+(put 'dont-record-current-mark 'permanent-local t)
+
+;; a conspiracy between push-mark and handle-pre-motion-command
+(defvar in-shifted-motion-command nil)
+
+(defcustom mark-ring-unrecorded-commands '(shifted-motion-commands
+ yank
+ mark-beginning-of-buffer
+ mark-bob
+ mark-defun
+ mark-end-of-buffer
+ mark-end-of-line
+ mark-end-of-sentence
+ mark-eob
+ mark-marker
+ mark-page
+ mark-paragraph
+ mark-sexp
+ mark-whole-buffer
+ mark-word)
+ "*List of commands whose marks should not be recorded on the mark stack.
+Many commands set the mark as part of their action. Normally, all such
+marks get recorded onto the mark stack. However, this tends to clutter up
+the mark stack unnecessarily. You can control this by putting a command
+onto this list. Then, any marks set by the function will not be recorded.
+
+The special value `shifted-motion-commands' causes marks set as a result
+of selection using any shifted motion commands to not be recorded.
+
+The value `yank' affects all yank-like commands, as well as just `yank'."
+ :type '(repeat (choice (const :tag "shifted motion commands"
+ shifted-motion-commands)
+ (const :tag "functions that select text"
+ :inline t
+ (mark-beginning-of-buffer
+ mark-bob
+ mark-defun
+ mark-end-of-buffer
+ mark-end-of-line
+ mark-end-of-sentence
+ mark-eob
+ mark-marker
+ mark-page
+ mark-paragraph
+ mark-sexp
+ mark-whole-buffer
+ mark-word))
+ (const :tag "functions that paste text"
+ yank)
+ function))
+ :group 'killing)
+
+(defcustom mark-ring-max 16
+ "*Maximum size of mark ring. Start discarding off end if gets this big."
+ :type 'integer
+ :group 'killing)
+
+(defvar global-mark-ring nil
+ "The list of saved global marks, most recent first.")
+
+(defcustom global-mark-ring-max 16
+ "*Maximum size of global mark ring. \
+Start discarding off end if gets this big."
+ :type 'integer
+ :group 'killing)
+
+(defun set-mark-command (arg)
+ "Set mark at where point is, or jump to mark.
+With no prefix argument, set mark, push old mark position on local mark
+ring, and push mark on global mark ring.
+With argument, jump to mark, and pop a new position for mark off the ring
+\(does not affect global mark ring\).
+
+The mark ring is a per-buffer stack of marks, most recent first. Its
+maximum length is controlled by `mark-ring-max'. Generally, when new
+marks are set, the current mark is pushed onto the stack. You can pop
+marks off the stack using \\[universal-argument] \\[set-mark-command]. The term \"ring\" is used because when
+you pop a mark off the stack, the current mark value is pushed onto the
+far end of the stack. If this is confusing, just think of the mark ring
+as a stack.
+
+Novice Emacs Lisp programmers often try to use the mark for the wrong
+purposes. See the documentation of `set-mark' for more information."
+ (interactive "P")
+ (if (null arg)
+ (push-mark nil nil t)
+ (if (null (mark t))
+ (error "No mark set in this buffer")
+ (if dont-record-current-mark (pop-mark))
+ (goto-char (mark t))
+ (pop-mark))))
+
+;; XEmacs: Extra parameter
+(defun push-mark (&optional location nomsg activate-region buffer)
+ "Set mark at LOCATION (point, by default) and push old mark on mark ring.
+If the last global mark pushed was not in the current buffer,
+also push LOCATION on the global mark ring.
+Display `Mark set' unless the optional second arg NOMSG is non-nil.
+Activate mark if optional third arg ACTIVATE-REGION non-nil.
+
+Novice Emacs Lisp programmers often try to use the mark for the wrong
+purposes. See the documentation of `set-mark' for more information."
+ (setq buffer (decode-buffer buffer)) ; XEmacs
+ (if (or dont-record-current-mark (null (mark t buffer))) ; XEmacs
+ nil
+ ;; The save-excursion / set-buffer is necessary because mark-ring
+ ;; is a buffer local variable
+ (save-excursion
+ (set-buffer buffer)
+ (setq mark-ring (cons (copy-marker (mark-marker t buffer)) mark-ring))
+ (if (> (length mark-ring) mark-ring-max)
+ (progn
+ (move-marker (car (nthcdr mark-ring-max mark-ring)) nil buffer)
+ (setcdr (nthcdr (1- mark-ring-max) mark-ring) nil)))))
+ (set-mark (or location (point buffer)) buffer)
+; (set-marker (mark-marker) (or location (point)) (current-buffer)) ; FSF
+ ;; Now push the mark on the global mark ring.
+ (if (and (not dont-record-current-mark)
+ (or (null global-mark-ring)
+ (not (eq (marker-buffer (car global-mark-ring)) buffer))))
+ ;; The last global mark pushed wasn't in this same buffer.
+ (progn
+ (setq global-mark-ring (cons (copy-marker (mark-marker t buffer))
+ global-mark-ring))
+ (if (> (length global-mark-ring) global-mark-ring-max)
+ (progn
+ (move-marker (car (nthcdr global-mark-ring-max global-mark-ring))
+ nil buffer)
+ (setcdr (nthcdr (1- global-mark-ring-max) global-mark-ring) nil)))))
+ (setq dont-record-current-mark
+ (not (not (or (and in-shifted-motion-command
+ (memq 'shifted-motion-commands
+ mark-ring-unrecorded-commands))
+ (memq this-command mark-ring-unrecorded-commands)))))
+ (or dont-record-current-mark nomsg executing-kbd-macro
+ (> (minibuffer-depth) 0)
+ (display-message 'command "Mark set"))
+ (if activate-region
+ (progn
+ (setq zmacs-region-stays t)
+ (zmacs-activate-region)))
+; (if (or activate (not transient-mark-mode)) ; FSF
+; (set-mark (mark t))) ; FSF
+ nil)
+
+(defun pop-mark ()
+ "Pop off mark ring into the buffer's actual mark.
+Does not set point. Does nothing if mark ring is empty."
+ (if mark-ring
+ (progn
+ (setq mark-ring (nconc mark-ring (list (copy-marker (mark-marker t)))))
+ (set-mark (car mark-ring))
+ (move-marker (car mark-ring) nil)
+ (if (null (mark t)) (ding))
+ (setq mark-ring (cdr mark-ring)))))
+
+(define-function 'exchange-dot-and-mark 'exchange-point-and-mark)
+(defun exchange-point-and-mark (&optional dont-activate-region)
+ "Put the mark where point is now, and point where the mark is now.
+The mark is activated unless DONT-ACTIVATE-REGION is non-nil."
+ (interactive nil)
+ (let ((omark (mark t)))
+ (if (null omark)
+ (error "No mark set in this buffer"))
+ (set-mark (point))
+ (goto-char omark)
+ (or dont-activate-region (zmacs-activate-region)) ; XEmacs
+ nil))
+
+;; XEmacs
+(defun mark-something (mark-fn movement-fn arg)
+ "internal function used by mark-sexp, mark-word, etc."
+ (let (newmark (pushp t))
+ (save-excursion
+ (if (and (eq last-command mark-fn) (mark))
+ ;; Extend the previous state in the same direction:
+ (progn
+ (if (< (mark) (point)) (setq arg (- arg)))
+ (goto-char (mark))
+ (setq pushp nil)))
+ (funcall movement-fn arg)
+ (setq newmark (point)))
+ (if pushp
+ (push-mark newmark nil t)
+ ;; Do not mess with the mark stack, but merely adjust the previous state:
+ (set-mark newmark)
+ (activate-region))))
+
+;(defun transient-mark-mode (arg)
+; "Toggle Transient Mark mode.
+;With arg, turn Transient Mark mode on if arg is positive, off otherwise.
+;
+;In Transient Mark mode, when the mark is active, the region is highlighted.
+;Changing the buffer \"deactivates\" the mark.
+;So do certain other operations that set the mark
+;but whose main purpose is something else--for example,
+;incremental search, \\[beginning-of-buffer], and \\[end-of-buffer]."
+; (interactive "P")
+; (setq transient-mark-mode
+; (if (null arg)
+; (not transient-mark-mode)
+; (> (prefix-numeric-value arg) 0))))
+
+(defun pop-global-mark ()
+ "Pop off global mark ring and jump to the top location."
+ (interactive)
+ ;; Pop entries which refer to non-existent buffers.
+ (while (and global-mark-ring (not (marker-buffer (car global-mark-ring))))
+ (setq global-mark-ring (cdr global-mark-ring)))
+ (or global-mark-ring
+ (error "No global mark set"))
+ (let* ((marker (car global-mark-ring))
+ (buffer (marker-buffer marker))
+ (position (marker-position marker)))
+ (setq global-mark-ring (nconc (cdr global-mark-ring)
+ (list (car global-mark-ring))))
+ (set-buffer buffer)
+ (or (and (>= position (point-min))
+ (<= position (point-max)))
+ (widen))
+ (goto-char position)
+ (switch-to-buffer buffer)))
+
+\f
+(defcustom signal-error-on-buffer-boundary t
+ "*If Non-nil, beep or signal an error when moving past buffer boundary.
+The commands that honor this variable are
+
+forward-char-command
+backward-char-command
+next-line
+previous-line
+scroll-up-command
+scroll-down-command"
+ :type 'boolean
+ :group 'editing-basics)
+
+;;; After 8 years of waiting ... -sb
+(defcustom next-line-add-newlines nil ; XEmacs
+ "*If non-nil, `next-line' inserts newline when the point is at end of buffer.
+This behavior used to be the default, and is still default in FSF Emacs.
+We think it is an unnecessary and unwanted side-effect."
+ :type 'boolean
+ :group 'editing-basics)
+
+(defcustom shifted-motion-keys-select-region t
+ "*If non-nil, shifted motion keys select text, like in MS Windows.
+
+More specifically, if a keystroke that matches one of the key
+specifications in `motion-keys-for-shifted-motion' is pressed along
+with the Shift key, and the command invoked moves the cursor and
+preserves the active region (see `zmacs-region-stays'), the
+intervening text will be added to the active region.
+
+When the region has been enabled or augmented as a result of a shifted
+motion key, an unshifted motion key will normally deselect the region.
+However, if `unshifted-motion-keys-deselect-region' is nil, the region
+will remain active, augmented by the characters moved over by this
+motion key.
+
+This functionality is specifically interpreted in terms of keys, and
+*NOT* in terms of particular commands, because that produces the most
+intuitive behavior: `forward-char' will work with shifted motion
+when invoked by `right' but not `C-f', and user-written motion commands
+bound to motion keys will automatically work with shifted motion."
+ :type 'boolean
+ :group 'editing-basics)
+
+(defcustom unshifted-motion-keys-deselect-region t
+ "*If non-nil, unshifted motion keys deselect a shifted-motion region.
+This only occurs after a region has been selected or augmented using
+shifted motion keys (not when using the traditional set-mark-then-move
+method), and has no effect if `shifted-motion-keys-select-region' is
+nil."
+ :type 'boolean
+ :group 'editing-basics)
+
+(defcustom motion-keys-for-shifted-motion
+ ;; meta-shift-home/end are NOT shifted motion commands.
+ '(left right up down (home) (control home) (meta control home)
+ (end) (control end) (meta control end) prior next
+ kp-left kp-right kp-up kp-down (kp-home) (control kp-home)
+ (meta control kp-home) (kp-end) (control kp-end) (meta control kp-end)
+ kp-prior kp-next)
+ "*List of keys considered motion keys for the purpose of shifted selection.
+When one of these keys is pressed along with the Shift key, and the
+command invoked moves the cursor and preserves the active region (see
+`zmacs-region-stays'), the intervening text will be added to the active
+region. See `shifted-motion-keys-select-region' for more details.
+
+Each entry should be a keysym or a list (MODIFIERS ... KEYSYM),
+i.e. zero or more modifiers followed by a keysym. When a keysym alone
+is given, a keystroke consisting of that keysym, with or without any
+modifiers, is considered a motion key. When the list form is given,
+only a keystroke with exactly those modifiers and no others (with the
+exception of the Shift key) is considered a motion key.
+
+NOTE: Currently, the keysym cannot be a non-alphabetic character key
+such as the `=/+' key. In any case, the shifted-motion paradigm does
+not make much sense with those keys. The keysym can, however, be an
+alphabetic key without problem, and you can specify the key using
+either a character or a symbol, uppercase or lowercase."
+ :type '(repeat (choice (const :tag "normal cursor-pad (\"gray\") keys"
+ :inline t
+ (left
+ right up down
+ (home) (control home) (meta control home)
+ (end) (control end) (meta control end)
+ prior next))
+ (const :tag "keypad motion keys"
+ :inline t
+ (kp-left
+ kp-right kp-up kp-down
+ (kp-home) (control kp-home)
+ (meta control kp-home)
+ (kp-end) (control kp-end)
+ (meta control kp-end)
+ kp-prior kp-next))
+ (const :tag "alphabetic motion keys"
+ :inline t
+ ((control b) (control f)
+ (control p) (control n)
+ (control a) (control e)
+ (control v) (meta v)
+ (meta b) (meta f)
+ (meta a) (meta e)
+ (meta m) ; back-to-indentation
+ (meta r) ; move-to-window-line
+ (meta control b) (meta control f)
+ (meta control p) (meta control n)
+ (meta control a) (meta control e)
+ (meta control d) ;; down-list
+ (meta control u) ;; backward-up-list
+ ))
+ symbol))
+ :group 'editing-basics)
+
+(defun handle-pre-motion-command-current-command-is-motion ()
+ (and (key-press-event-p last-input-event)
+ (let ((key (event-key last-input-event))
+ (mods (delq 'shift (event-modifiers last-input-event))))
+ ;(princ (format "key: %s mods: %s\n" key mods) 'external-debugging-output)
+ (catch 'handle-pre-motion-command-current-command-is-motion
+ (flet ((keysyms-equal (a b)
+ (if (characterp a)
+ (setq a (intern (char-to-string (downcase a)))))
+ (if (characterp b)
+ (setq b (intern (char-to-string (downcase b)))))
+ (eq a b)))
+ (mapc #'(lambda (keysym)
+ (when (if (listp keysym)
+ (and (equal mods (butlast keysym))
+ (keysyms-equal key (car (last keysym))))
+ (keysyms-equal key keysym))
+ (throw
+ 'handle-pre-motion-command-current-command-is-motion
+ t)))
+ motion-keys-for-shifted-motion)
+ nil)))))
+
+(defun handle-pre-motion-command ()
+ (if (and
+ (handle-pre-motion-command-current-command-is-motion)
+ zmacs-regions
+ shifted-motion-keys-select-region
+ (not (region-active-p))
+ ;; Special-case alphabetic keysyms, because the `shift'
+ ;; modifier does not appear on them. (Unfortunately, we have no
+ ;; way of determining Shift-key status on non-alphabetic ASCII
+ ;; keysyms. However, in this case, using Shift will invoke a
+ ;; separate command from the non-shifted version, so the
+ ;; "shifted motion" paradigm makes no sense.)
+ (or (memq 'shift (event-modifiers last-input-event))
+ (let ((key (event-key last-input-event)))
+ (and (characterp key)
+ (not (eq key (downcase key)))))))
+ (let ((in-shifted-motion-command t))
+ (push-mark nil nil t))))
+
+(defun handle-post-motion-command ()
+ (if
+ (and
+ (handle-pre-motion-command-current-command-is-motion)
+ zmacs-regions
+ (region-active-p))
+ ;; Special-case alphabetic keysyms, because the `shift'
+ ;; modifier does not appear on them. See above.
+ (cond ((or (memq 'shift (event-modifiers last-input-event))
+ (let ((key (event-key last-input-event)))
+ (and (characterp key)
+ (not (eq key (downcase key))))))
+ (if shifted-motion-keys-select-region
+ (putf this-command-properties 'shifted-motion-command t))
+ (setq zmacs-region-stays t))
+ ((and (getf last-command-properties 'shifted-motion-command)
+ unshifted-motion-keys-deselect-region)
+ (setq zmacs-region-stays nil)))))
+
+(defun forward-char-command (&optional arg buffer)
+ "Move point right ARG characters (left if ARG negative) in BUFFER.
+On attempt to pass end of buffer, stop and signal `end-of-buffer'.
+On attempt to pass beginning of buffer, stop and signal `beginning-of-buffer'.
+Error signaling is suppressed if `signal-error-on-buffer-boundary'
+is nil. If BUFFER is nil, the current buffer is assumed.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details."
+ (interactive "_p")
+ (if signal-error-on-buffer-boundary
+ (forward-char arg buffer)
+ (condition-case nil
+ (forward-char arg buffer)
+ (beginning-of-buffer nil)
+ (end-of-buffer nil))))
+
+(defun backward-char-command (&optional arg buffer)
+ "Move point left ARG characters (right if ARG negative) in BUFFER.
+On attempt to pass end of buffer, stop and signal `end-of-buffer'.
+On attempt to pass beginning of buffer, stop and signal `beginning-of-buffer'.
+Error signaling is suppressed if `signal-error-on-buffer-boundary'
+is nil. If BUFFER is nil, the current buffer is assumed.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details."
+ (interactive "_p")
+ (if signal-error-on-buffer-boundary
+ (backward-char arg buffer)
+ (condition-case nil
+ (backward-char arg buffer)
+ (beginning-of-buffer nil)
+ (end-of-buffer nil))))
+
+(defun scroll-up-one ()
+ "Scroll text of current window upward one line.
+On attempt to scroll past end of buffer, `end-of-buffer' is signaled.
+On attempt to scroll past beginning of buffer, `beginning-of-buffer' is
+signaled.
+
+If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer
+boundaries do not cause an error to be signaled."
+ (interactive "_")
+ (scroll-up-command 1))
+
+(defun scroll-up-command (&optional n)
+ "Scroll current window upward N lines; or near full screen if N is nil.
+A near full screen is `next-screen-context-lines' less than a full screen.
+Negative N means scroll downward.
+When calling from a program, supply a number as argument or nil.
+On attempt to scroll past end of buffer, `end-of-buffer' is signaled.
+On attempt to scroll past beginning of buffer, `beginning-of-buffer' is
+signaled.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details.
+
+If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer
+boundaries do not cause an error to be signaled."
+ (interactive "_P")
+ (if signal-error-on-buffer-boundary
+ (scroll-up n)
+ (condition-case nil
+ (scroll-up n)
+ (beginning-of-buffer nil)
+ (end-of-buffer nil))))
+
+(defun scroll-down-one ()
+ "Scroll text of current window downward one line.
+On attempt to scroll past end of buffer, `end-of-buffer' is signaled.
+On attempt to scroll past beginning of buffer, `beginning-of-buffer' is
+signaled.
+
+If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer
+boundaries do not cause an error to be signaled."
+ (interactive "_")
+ (scroll-down-command 1))
+
+(defun scroll-down-command (&optional n)
+ "Scroll current window downward N lines; or near full screen if N is nil.
+A near full screen is `next-screen-context-lines' less than a full screen.
+Negative N means scroll upward.
+When calling from a program, supply a number as argument or nil.
+On attempt to scroll past end of buffer, `end-of-buffer' is signaled.
+On attempt to scroll past beginning of buffer, `beginning-of-buffer' is
+signaled.
+
+If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer
+boundaries do not cause an error to be signaled.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details."
+ (interactive "_P")
+ (if signal-error-on-buffer-boundary
+ (scroll-down n)
+ (condition-case nil
+ (scroll-down n)
+ (beginning-of-buffer nil)
+ (end-of-buffer nil))))
+
+(defun next-line (count)
+ "Move cursor vertically down COUNT lines.
+If there is no character in the target line exactly under the current column,
+the cursor is positioned after the character in that line which spans this
+column, or at the end of the line if it is not long enough.
+
+If there is no line in the buffer after this one, behavior depends on the
+value of `next-line-add-newlines'. If non-nil, it inserts a newline character
+to create a line, and moves the cursor to that line. Otherwise it moves the
+cursor to the end of the buffer.
+
+The command \\[set-goal-column] can be used to create
+a semipermanent goal column to which this command always moves.
+Then it does not try to move vertically. This goal column is stored
+in `goal-column', which is nil when there is none.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details.
+
+If you are thinking of using this in a Lisp program, consider
+using `forward-line' instead. It is usually easier to use
+and more reliable (no dependence on goal column, etc.)."
+ (interactive "_p")
+ (if (and next-line-add-newlines (= count 1))
+ (let ((opoint (point)))
+ (end-of-line)
+ (if (eobp)
+ (newline 1)
+ (goto-char opoint)
+ (line-move count)))
+ (if (interactive-p)
+ ;; XEmacs: Not sure what to do about this. It's inconsistent. -sb
+ (condition-case nil
+ (line-move count)
+ ((beginning-of-buffer end-of-buffer)
+ (when signal-error-on-buffer-boundary
+ (ding nil 'buffer-bound))))
+ (line-move count)))
+ nil)
+
+(defun previous-line (count)
+ "Move cursor vertically up COUNT lines.
+If there is no character in the target line exactly over the current column,
+the cursor is positioned after the character in that line which spans this
+column, or at the end of the line if it is not long enough.
+
+The command \\[set-goal-column] can be used to create
+a semipermanent goal column to which this command always moves.
+Then it does not try to move vertically.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details.
+
+If you are thinking of using this in a Lisp program, consider using
+`forward-line' with a negative argument instead. It is usually easier
+to use and more reliable (no dependence on goal column, etc.)."
+ (interactive "_p")
+ (if (interactive-p)
+ (condition-case nil
+ (line-move (- count))
+ ((beginning-of-buffer end-of-buffer)
+ (when signal-error-on-buffer-boundary ; XEmacs
+ (ding nil 'buffer-bound))))
+ (line-move (- count)))
+ nil)
+
+(defcustom block-movement-size 6
+ "*Number of lines that \"block movement\" commands (\\[forward-block-of-lines], \\[backward-block-of-lines]) move by."
+ :type 'integer
+ :group 'editing-basics)
+
+(defun backward-block-of-lines ()
+ "Move backward by one \"block\" of lines.
+The number of lines that make up a block is controlled by
+`block-movement-size', which defaults to 6.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details."
+ (interactive "_")
+ (forward-line (- block-movement-size)))
+
+(defun forward-block-of-lines ()
+ "Move forward by one \"block\" of lines.
+The number of lines that make up a block is controlled by
+`block-movement-size', which defaults to 6.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details."
+ (interactive "_")
+ (forward-line block-movement-size))
+
+(defcustom track-eol nil
+ "*Non-nil means vertical motion starting at end of line keeps to ends of lines.
+This means moving to the end of each line moved onto.
+The beginning of a blank line does not count as the end of a line."
+ :type 'boolean
+ :group 'editing-basics)
+
+(defcustom goal-column nil
+ "*Semipermanent goal column for vertical motion, as set by \\[set-goal-column], or nil."
+ :type '(choice integer (const :tag "None" nil))
+ :group 'editing-basics)
+(make-variable-buffer-local 'goal-column)
+
+(defvar temporary-goal-column 0
+ "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.")
+(make-variable-buffer-local 'temporary-goal-column)
+
+;XEmacs: not yet ported, so avoid compiler warnings
+(eval-when-compile
+ (defvar inhibit-point-motion-hooks))
+
+(defcustom line-move-ignore-invisible nil
+ "*Non-nil means \\[next-line] and \\[previous-line] ignore invisible lines.
+Use with care, as it slows down movement significantly. Outline mode sets this."
+ :type 'boolean
+ :group 'editing-basics)
+
+;; This is the guts of next-line and previous-line.
+;; Count says how many lines to move.
+(defun line-move (count)
+ ;; Don't run any point-motion hooks, and disregard intangibility,
+ ;; for intermediate positions.
+ (let ((inhibit-point-motion-hooks t)
+ (opoint (point))
+ new)
+ (unwind-protect
+ (progn
+ (if (not (or (eq last-command 'next-line)
+ (eq last-command 'previous-line)))
+ (setq temporary-goal-column
+ (if (and track-eol (eolp)
+ ;; Don't count start of empty line as end of line
+ ;; unless we just did explicit end-of-line.
+ (or (not (bolp)) (eq last-command 'end-of-line)))
+ 9999
+ (current-column))))
+ (if (and (not (integerp selective-display))
+ (not line-move-ignore-invisible))
+ ;; Use just newline characters.
+ (or (if (> count 0)
+ (progn (if (> count 1) (forward-line (1- count)))
+ ;; This way of moving forward COUNT lines
+ ;; verifies that we have a newline after the last one.
+ ;; It doesn't get confused by intangible text.
+ (end-of-line)
+ (zerop (forward-line 1)))
+ (and (zerop (forward-line count))
+ (bolp)))
+ (signal (if (< count 0)
+ 'beginning-of-buffer
+ 'end-of-buffer)
+ nil))
+ ;; Move by count lines, but ignore invisible ones.
+ (while (> count 0)
+ (end-of-line)
+ (and (zerop (vertical-motion 1))
+ (signal 'end-of-buffer nil))
+ ;; If the following character is currently invisible,
+ ;; skip all characters with that same `invisible' property value.
+ (while (and (not (eobp))
+ (let ((prop
+ (get-char-property (point) 'invisible)))
+ (if (eq buffer-invisibility-spec t)
+ prop
+ (or (memq prop buffer-invisibility-spec)
+ (assq prop buffer-invisibility-spec)))))
+ (if (get-text-property (point) 'invisible)
+ (goto-char (next-single-property-change (point) 'invisible))
+ (goto-char (next-extent-change (point))))) ; XEmacs
+ (setq count (1- count)))
+ (while (< count 0)
+ (beginning-of-line)
+ (and (zerop (vertical-motion -1))
+ (signal 'beginning-of-buffer nil))
+ (while (and (not (bobp))
+ (let ((prop
+ (get-char-property (1- (point)) 'invisible)))
+ (if (eq buffer-invisibility-spec t)
+ prop
+ (or (memq prop buffer-invisibility-spec)
+ (assq prop buffer-invisibility-spec)))))
+ (if (get-text-property (1- (point)) 'invisible)
+ (goto-char (previous-single-property-change (point) 'invisible))
+ (goto-char (previous-extent-change (point))))) ; XEmacs
+ (setq count (1+ count))))
+ (move-to-column (or goal-column temporary-goal-column)))
+ ;; Remember where we moved to, go back home,
+ ;; then do the motion over again
+ ;; in just one step, with intangibility and point-motion hooks
+ ;; enabled this time.
+ (setq new (point))
+ (goto-char opoint)
+ (setq inhibit-point-motion-hooks nil)
+ (goto-char new)))
+ nil)
+
+;;; Many people have said they rarely use this feature, and often type
+;;; it by accident. Maybe it shouldn't even be on a key.
+;; It's not on a key, as of 20.2. So no need for this.
+;(put 'set-goal-column 'disabled t)
+
+(defun set-goal-column (column)
+ "Set the current horizontal position as a goal for \\[next-line] and \\[previous-line].
+Those commands will move to this position in the line moved to
+rather than trying to keep the same horizontal position.
+With a non-nil argument, clears out the goal column
+so that \\[next-line] and \\[previous-line] resume vertical motion.
+The goal column is stored in the variable `goal-column'."
+ (interactive "_P") ; XEmacs
+ (if column
+ (progn
+ (setq goal-column nil)
+ (display-message 'command "No goal column"))
+ (setq goal-column (current-column))
+ (lmessage 'command
+ "Goal column %d (use %s with a prefix arg to unset it)"
+ goal-column
+ (substitute-command-keys "\\[set-goal-column]")))
+ nil)
+\f
+;; deleted FSFmacs terminal randomness hscroll-point-visible stuff.
+;; hscroll-step
+;; hscroll-point-visible
+;; hscroll-window-column
+;; right-arrow
+;; left-arrow
+
+(defun scroll-other-window-down (lines)
+ "Scroll the \"other window\" down.
+For more details, see the documentation for `scroll-other-window'."
+ (interactive "P")
+ (scroll-other-window
+ ;; Just invert the argument's meaning.
+ ;; We can do that without knowing which window it will be.
+ (if (eq lines '-) nil
+ (if (null lines) '-
+ (- (prefix-numeric-value lines))))))
+;(define-key esc-map [?\C-\S-v] 'scroll-other-window-down)
+
+(defun beginning-of-buffer-other-window (arg)
+ "Move point to the beginning of the buffer in the other window.
+Leave mark at previous position.
+With arg N, put point N/10 of the way from the true beginning."
+ (interactive "P")
+ (let ((orig-window (selected-window))
+ (window (other-window-for-scrolling)))
+ ;; We use unwind-protect rather than save-window-excursion
+ ;; because the latter would preserve the things we want to change.
+ (unwind-protect
+ (progn
+ (select-window window)
+ ;; Set point and mark in that window's buffer.
+ (beginning-of-buffer arg)
+ ;; Set point accordingly.
+ (recenter '(t)))
+ (select-window orig-window))))
+
+(defun end-of-buffer-other-window (arg)
+ "Move point to the end of the buffer in the other window.
+Leave mark at previous position.
+With arg N, put point N/10 of the way from the true end."
+ (interactive "P")
+ ;; See beginning-of-buffer-other-window for comments.
+ (let ((orig-window (selected-window))
+ (window (other-window-for-scrolling)))
+ (unwind-protect
+ (progn
+ (select-window window)
+ (end-of-buffer arg)
+ (recenter '(t)))
+ (select-window orig-window))))
+\f
+(defun transpose-chars (arg)
+ "Interchange characters around point, moving forward one character.
+With prefix arg ARG, effect is to take character before point
+and drag it forward past ARG other characters (backward if ARG negative).
+If no argument and at end of line, the previous two chars are exchanged."
+ (interactive "*P")
+ (and (null arg) (eolp) (backward-char 1))
+ (transpose-subr 'forward-char (prefix-numeric-value arg)))
+
+;;; A very old implementation of transpose-chars from the old days ...
+(defun transpose-preceding-chars (arg)
+ "Interchange characters before point.
+With prefix arg ARG, effect is to take character before point
+and drag it forward past ARG other characters (backward if ARG negative).
+If no argument and not at start of line, the previous two chars are exchanged."
+ (interactive "*P")
+ (and (null arg) (not (bolp)) (backward-char 1))
+ (transpose-subr 'forward-char (prefix-numeric-value arg)))
+
+
+(defun transpose-words (arg)
+ "Interchange words around point, leaving point at end of them.
+With prefix arg ARG, effect is to take word before or around point
+and drag it forward past ARG other words (backward if ARG negative).
+If ARG is zero, the words around or after point and around or after mark
+are interchanged."
+ (interactive "*p")
+ (transpose-subr 'forward-word arg))
+
+(defun transpose-sexps (arg)
+ "Like \\[transpose-words] but applies to sexps.
+Does not work on a sexp that point is in the middle of
+if it is a list or string."
+ (interactive "*p")
+ (transpose-subr 'forward-sexp arg))
+
+(defun transpose-lines (arg)
+ "Exchange current line and previous line, leaving point after both.
+With argument ARG, takes previous line and moves it past ARG lines.
+With argument 0, interchanges line point is in with line mark is in."
+ (interactive "*p")
+ (transpose-subr #'(lambda (arg)
+ (if (= arg 1)
+ (progn
+ ;; Move forward over a line,
+ ;; but create a newline if none exists yet.
+ (end-of-line)
+ (if (eobp)
+ (newline)
+ (forward-char 1)))
+ (forward-line arg)))
+ arg))
+
+(defun transpose-line-up (arg)
+ "Move current line one line up, leaving point at beginning of that line.
+This can be run repeatedly to move the current line up a number of lines."
+ (interactive "*p")
+ ;; Move forward over a line,
+ ;; but create a newline if none exists yet.
+ (end-of-line)
+ (if (eobp)
+ (newline)
+ (forward-char 1))
+ (transpose-lines (- arg))
+ (forward-line -1))
+
+(defun transpose-line-down (arg)
+ "Move current line one line down, leaving point at beginning of that line.
+This can be run repeatedly to move the current line down a number of lines."
+ (interactive "*p")
+ ;; Move forward over a line,
+ ;; but create a newline if none exists yet.
+ (end-of-line)
+ (if (eobp)
+ (newline)
+ (forward-char 1))
+ (transpose-lines arg)
+ (forward-line -1))
+
+(defun transpose-subr (mover arg)
+ (let (start1 end1 start2 end2)
+ ;; XEmacs -- use flet instead of defining a separate function and
+ ;; relying on dynamic scope!!!
+ (flet ((transpose-subr-1 ()
+ (if (> (min end1 end2) (max start1 start2))
+ (error "Don't have two things to transpose"))
+ (let ((word1 (buffer-substring start1 end1))
+ (word2 (buffer-substring start2 end2)))
+ (delete-region start2 end2)
+ (goto-char start2)
+ (insert word1)
+ (goto-char (if (< start1 start2) start1
+ (+ start1 (- (length word1) (length word2)))))
+ (delete-char (length word1))
+ (insert word2))))
+ (if (= arg 0)
+ (progn
+ (save-excursion
+ (funcall mover 1)
+ (setq end2 (point))
+ (funcall mover -1)
+ (setq start2 (point))
+ (goto-char (mark t)) ; XEmacs
+ (funcall mover 1)
+ (setq end1 (point))
+ (funcall mover -1)
+ (setq start1 (point))
+ (transpose-subr-1))
+ (exchange-point-and-mark t))) ; XEmacs
+ (while (> arg 0)
+ (funcall mover -1)
+ (setq start1 (point))
+ (funcall mover 1)
+ (setq end1 (point))
+ (funcall mover 1)
+ (setq end2 (point))
+ (funcall mover -1)
+ (setq start2 (point))
+ (transpose-subr-1)
+ (goto-char end2)
+ (setq arg (1- arg)))
+ (while (< arg 0)
+ (funcall mover -1)
+ (setq start2 (point))
+ (funcall mover -1)
+ (setq start1 (point))
+ (funcall mover 1)
+ (setq end1 (point))
+ (funcall mover 1)
+ (setq end2 (point))
+ (transpose-subr-1)
+ (setq arg (1+ arg))))))
+
+\f
+(defcustom comment-column 32
+ "*Column to indent right-margin comments to.
+Setting this variable automatically makes it local to the current buffer.
+Each mode establishes a different default value for this variable; you
+can set the value for a particular mode using that mode's hook."
+ :type 'integer
+ :group 'fill-comments)
+(make-variable-buffer-local 'comment-column)
+
+(defcustom comment-start nil
+ "*String to insert to start a new comment, or nil if no comment syntax."
+ :type '(choice (const :tag "None" nil)
+ string)
+ :group 'fill-comments)
+
+(defcustom comment-start-skip nil
+ "*Regexp to match the start of a comment plus everything up to its body.
+If there are any \\(...\\) pairs, the comment delimiter text is held to begin
+at the place matched by the close of the first pair."
+ :type '(choice (const :tag "None" nil)
+ regexp)
+ :group 'fill-comments)
+
+(defcustom comment-end ""
+ "*String to insert to end a new comment.
+Should be an empty string if comments are terminated by end-of-line."
+ :type 'string
+ :group 'fill-comments)
+
+(defconst comment-indent-hook nil
+ "Obsolete variable for function to compute desired indentation for a comment.
+Use `comment-indent-function' instead.
+This function is called with no args with point at the beginning of
+the comment's starting delimiter.")
+
+(defconst comment-indent-function
+ ;; XEmacs - add at least one space after the end of the text on the
+ ;; current line...
+ (lambda ()
+ (save-excursion
+ (beginning-of-line)
+ (let ((eol (save-excursion (end-of-line) (point))))
+ (and comment-start-skip
+ (re-search-forward comment-start-skip eol t)
+ (setq eol (match-beginning 0)))
+ (goto-char eol)
+ (skip-chars-backward " \t")
+ (max comment-column (1+ (current-column))))))
+ "Function to compute desired indentation for a comment.
+This function is called with no args with point at the beginning of
+the comment's starting delimiter.")
+
+(defcustom block-comment-start nil
+ "*String to insert to start a new comment on a line by itself.
+If nil, use `comment-start' instead.
+Note that the regular expression `comment-start-skip' should skip this string
+as well as the `comment-start' string."
+ :type '(choice (const :tag "Use `comment-start'" nil)
+ string)
+ :group 'fill-comments)
+
+(defcustom block-comment-end nil
+ "*String to insert to end a new comment on a line by itself.
+Should be an empty string if comments are terminated by end-of-line.
+If nil, use `comment-end' instead."
+ :type '(choice (const :tag "Use `comment-end'" nil)
+ string)
+ :group 'fill-comments)
+
+(defun indent-for-comment ()
+ "Indent this line's comment to comment column, or insert an empty
+comment. Comments starting in column 0 are not moved."
+ (interactive "*")
+ (let* ((empty (save-excursion (beginning-of-line)
+ (looking-at "[ \t]*$")))
+ (starter (or (and empty block-comment-start) comment-start))
+ (ender (or (and empty block-comment-end) comment-end)))
+ (if (null starter)
+ (error "No comment syntax defined")
+ (let* ((eolpos (save-excursion (end-of-line) (point)))
+ cpos indent begpos)
+ (beginning-of-line)
+ (if (re-search-forward comment-start-skip eolpos 'move)
+ (progn (setq cpos (point-marker))
+ ;; Find the start of the comment delimiter.
+ ;; If there were paren-pairs in comment-start-skip,
+ ;; position at the end of the first pair.
+ (if (match-end 1)
+ (goto-char (match-end 1))
+ ;; If comment-start-skip matched a string with
+ ;; internal whitespace (not final whitespace) then
+ ;; the delimiter start at the end of that
+ ;; whitespace. Otherwise, it starts at the
+ ;; beginning of what was matched.
+ (skip-syntax-backward " " (match-beginning 0))
+ (skip-syntax-backward "^ " (match-beginning 0)))))
+ (setq begpos (point))
+ ;; Compute desired indent.
+ ;; XEmacs change: Preserve indentation of comments starting in
+ ;; column 0, as documented.
+ (cond
+ ((= (current-column) 0)
+ (goto-char begpos))
+ ((= (current-column)
+ (setq indent (funcall comment-indent-function)))
+ (goto-char begpos))
+ (t
+ ;; If that's different from current, change it.
+ (skip-chars-backward " \t")
+ (delete-region (point) begpos)
+ (indent-to indent)))
+ ;; An existing comment?
+ (if cpos
+ (progn (goto-char cpos)
+ (set-marker cpos nil))
+ ;; No, insert one.
+ (insert starter)
+ (save-excursion
+ (insert ender)))))))
+
+(defun set-comment-column (arg)
+ "Set the comment column based on point.
+With no arg, set the comment column to the current column.
+With just minus as arg, kill any comment on this line.
+With any other arg, set comment column to indentation of the previous comment
+ and then align or create a comment on this line at that column."
+ (interactive "P")
+ (if (eq arg '-)
+ (kill-comment nil)
+ (if arg
+ (progn
+ (save-excursion
+ (beginning-of-line)
+ (re-search-backward comment-start-skip)
+ (beginning-of-line)
+ (re-search-forward comment-start-skip)
+ (goto-char (match-beginning 0))
+ (setq comment-column (current-column))
+ (lmessage 'command "Comment column set to %d" comment-column))
+ (indent-for-comment))
+ (setq comment-column (current-column))
+ (lmessage 'command "Comment column set to %d" comment-column))))
+
+(defun kill-comment (arg)
+ "Kill the comment on this line, if any.
+With argument, kill comments on that many lines starting with this one."
+ ;; this function loses in a lot of situations. it incorrectly recognizes
+ ;; comment delimiters sometimes (ergo, inside a string), doesn't work
+ ;; with multi-line comments, can kill extra whitespace if comment wasn't
+ ;; through end-of-line, et cetera.
+ (interactive "*P")
+ (or comment-start-skip (error "No comment syntax defined"))
+ (let ((count (prefix-numeric-value arg)) endc)
+ (while (> count 0)
+ (save-excursion
+ (end-of-line)
+ (setq endc (point))
+ (beginning-of-line)
+ (and (string< "" comment-end)
+ (setq endc
+ (progn
+ (re-search-forward (regexp-quote comment-end) endc 'move)
+ (skip-chars-forward " \t")
+ (point))))
+ (beginning-of-line)
+ (if (re-search-forward comment-start-skip endc t)
+ (progn
+ (goto-char (match-beginning 0))
+ (skip-chars-backward " \t")
+ (kill-region (point) endc)
+ ;; to catch comments a line beginnings
+ (indent-according-to-mode))))
+ (if arg (forward-line 1))
+ (setq count (1- count)))))
+
+(defun comment-region (start end &optional arg)
+ "Comment or uncomment each line in the region.
+With just C-u prefix arg, uncomment each line in region.
+Numeric prefix arg ARG means use ARG comment characters.
+If ARG is negative, delete that many comment characters instead.
+Comments are terminated on each line, even for syntax in which newline does
+not end the comment. Blank lines do not get comments."
+ ;; if someone wants it to only put a comment-start at the beginning and
+ ;; comment-end at the end then typing it, C-x C-x, closing it, C-x C-x
+ ;; is easy enough. No option is made here for other than commenting
+ ;; every line.
+ (interactive "r\nP")
+ (or comment-start (error "No comment syntax is defined"))
+ (if (> start end) (let (mid) (setq mid start start end end mid)))
+ (save-excursion
+ (save-restriction
+ (let ((cs comment-start) (ce comment-end)
+ numarg)
+ (if (consp arg) (setq numarg t)
+ (setq numarg (prefix-numeric-value arg))
+ ;; For positive arg > 1, replicate the comment delims now,
+ ;; then insert the replicated strings just once.
+ (while (> numarg 1)
+ (setq cs (concat cs comment-start)
+ ce (concat ce comment-end))
+ (setq numarg (1- numarg))))
+ ;; Loop over all lines from START to END.
+ (narrow-to-region start end)
+ (goto-char start)
+ (while (not (eobp))
+ (if (or (eq numarg t) (< numarg 0))
+ (progn
+ ;; Delete comment start from beginning of line.
+ (if (eq numarg t)
+ (while (looking-at (regexp-quote cs))
+ (delete-char (length cs)))
+ (let ((count numarg))
+ (while (and (> 1 (setq count (1+ count)))
+ (looking-at (regexp-quote cs)))
+ (delete-char (length cs)))))
+ ;; Delete comment end from end of line.
+ (if (string= "" ce)
+ nil
+ (if (eq numarg t)
+ (progn
+ (end-of-line)
+ ;; This is questionable if comment-end ends in
+ ;; whitespace. That is pretty brain-damaged,
+ ;; though.
+ (skip-chars-backward " \t")
+ (if (and (>= (- (point) (point-min)) (length ce))
+ (save-excursion
+ (backward-char (length ce))
+ (looking-at (regexp-quote ce))))
+ (delete-char (- (length ce)))))
+ (let ((count numarg))
+ (while (> 1 (setq count (1+ count)))
+ (end-of-line)
+ ;; This is questionable if comment-end ends in
+ ;; whitespace. That is pretty brain-damaged though
+ (skip-chars-backward " \t")
+ (save-excursion
+ (backward-char (length ce))
+ (if (looking-at (regexp-quote ce))
+ (delete-char (length ce))))))))
+ (forward-line 1))
+ ;; Insert at beginning and at end.
+ (if (looking-at "[ \t]*$") ()
+ (insert cs)
+ (if (string= "" ce) ()
+ (end-of-line)
+ (insert ce)))
+ (search-forward "\n" nil 'move)))))))
+
+;; XEmacs
+(defun prefix-region (prefix)
+ "Add a prefix string to each line between mark and point."
+ (interactive "sPrefix string: ")
+ (if prefix
+ (let ((count (count-lines (mark) (point))))
+ (goto-char (min (mark) (point)))
+ (while (> count 0)
+ (setq count (1- count))
+ (beginning-of-line 1)
+ (insert prefix)
+ (end-of-line 1)
+ (forward-char 1)))))
+
+\f
+(defun backward-word (&optional count buffer)
+ "Move point backward COUNT words (forward if COUNT is negative).
+Normally t is returned, but if an edge of the buffer is reached,
+point is left there and nil is returned.
+
+COUNT defaults to 1, and BUFFER defaults to the current buffer.
+
+The characters that are moved over may be added to the current selection
+\(i.e. active region) if the Shift key is held down, a motion key is used
+to invoke this command, and `shifted-motion-keys-select-region' is t; see
+the documentation for this variable for more details."
+ (interactive "_p")
+ (forward-word (- (or count 1)) buffer))
+
+(defun mark-word (&optional count)
+ "Mark the text from point until encountering the end of a word.
+With optional argument COUNT, mark COUNT words."
+ (interactive "p")
+ (mark-something 'mark-word 'forward-word count))
+
+(defun kill-word (&optional count)
+ "Kill characters forward until encountering the end of a word.
+With optional argument COUNT, do this that many times."
+ (interactive "*p")
+ (kill-region (point) (save-excursion (forward-word count) (point))))
+
+(defun backward-kill-word (&optional count)
+ "Kill characters backward until encountering the end of a word.
+With argument, do this that many times."
+ (interactive "*p")
+ (kill-word (- (or count 1))))
+
+(defun current-word (&optional strict)
+ "Return the word point is on (or a nearby word) as a string.
+If optional arg STRICT is non-nil, return nil unless point is within
+or adjacent to a word.
+If point is not between two word-constituent characters, but immediately
+follows one, move back first.
+Otherwise, if point precedes a word constituent, move forward first.
+Otherwise, move backwards until a word constituent is found and get that word;
+if you a newlines is reached first, move forward instead."
+ (save-excursion
+ (let ((oldpoint (point)) (start (point)) (end (point)))
+ (skip-syntax-backward "w_") (setq start (point))
+ (goto-char oldpoint)
+ (skip-syntax-forward "w_") (setq end (point))
+ (if (and (eq start oldpoint) (eq end oldpoint))
+ ;; Point is neither within nor adjacent to a word.
+ (and (not strict)
+ (progn
+ ;; Look for preceding word in same line.
+ (skip-syntax-backward "^w_"
+ (save-excursion
+ (beginning-of-line) (point)))
+ (if (bolp)
+ ;; No preceding word in same line.
+ ;; Look for following word in same line.
+ (progn
+ (skip-syntax-forward "^w_"
+ (save-excursion
+ (end-of-line) (point)))
+ (setq start (point))
+ (skip-syntax-forward "w_")
+ (setq end (point)))
+ (setq end (point))
+ (skip-syntax-backward "w_")
+ (setq start (point)))
+ (buffer-substring start end)))
+ (buffer-substring start end)))))
+\f
+(defcustom fill-prefix nil
+ "*String for filling to insert at front of new line, or nil for none.
+Setting this variable automatically makes it local to the current buffer."
+ :type '(choice (const :tag "None" nil)
+ string)
+ :group 'fill)
+(make-variable-buffer-local 'fill-prefix)
+
+(defcustom auto-fill-inhibit-regexp nil
+ "*Regexp to match lines which should not be auto-filled."
+ :type '(choice (const :tag "None" nil)
+ regexp)
+ :group 'fill)
+
+(defvar comment-line-break-function 'indent-new-comment-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 soft newlines should be inserted.")
+
+;; defined in mule-base/mule-category.el
+(defvar word-across-newline)
+
+;; This function is the auto-fill-function of a buffer
+;; when Auto-Fill mode is enabled.
+;; It returns t if it really did any work.
+;; XEmacs: This function is totally different.
+(defun do-auto-fill ()
+ (let (give-up)
+ (or (and auto-fill-inhibit-regexp
+ (save-excursion (beginning-of-line)
+ (looking-at auto-fill-inhibit-regexp)))
+ (while (and (not give-up) (> (current-column) fill-column))
+ ;; Determine where to split the line.
+ (let ((fill-prefix fill-prefix)
+ (fill-point
+ (let ((opoint (point))
+ bounce
+ ;; 97/3/14 jhod: Kinsoku
+ (re-break-point (if (featurep 'mule)
+ (concat "[ \t\n]\\|" word-across-newline
+ ".\\|." word-across-newline)
+ "[ \t\n]"))
+ ;; end patch
+ (first t))
+ (save-excursion
+ (move-to-column (1+ fill-column))
+ ;; Move back to a word boundary.
+ (while (or first
+ ;; If this is after period and a single space,
+ ;; move back once more--we don't want to break
+ ;; the line there and make it look like a
+ ;; sentence end.
+ (and (not (bobp))
+ (not bounce)
+ sentence-end-double-space
+ (save-excursion (backward-char 1)
+ (and (looking-at "\\. ")
+ (not (looking-at "\\. "))))))
+ (setq first nil)
+ ;; 97/3/14 jhod: Kinsoku
+ ; (skip-chars-backward "^ \t\n"))
+ (fill-move-backward-to-break-point re-break-point)
+ ;; end patch
+ ;; If we find nowhere on the line to break it,
+ ;; break after one word. Set bounce to t
+ ;; so we will not keep going in this while loop.
+ (if (bolp)
+ (progn
+ ;; 97/3/14 jhod: Kinsoku
+ ; (re-search-forward "[ \t]" opoint t)
+ (fill-move-forward-to-break-point re-break-point
+ opoint)
+ ;; end patch
+ (setq bounce t)))
+ (skip-chars-backward " \t"))
+ (if (and (featurep 'mule)
+ (or bounce (bolp))) (kinsoku-process)) ;; 97/3/14 jhod: Kinsoku
+ ;; Let fill-point be set to the place where we end up.
+ (point)))))
+
+ ;; I'm not sure why Stig made this change but it breaks
+ ;; auto filling in at least C mode so I'm taking it back
+ ;; out. --cet
+ ;; XEmacs - adaptive fill.
+ ;;(maybe-adapt-fill-prefix
+ ;; (or from (setq from (save-excursion (beginning-of-line)
+ ;; (point))))
+ ;; (or to (setq to (save-excursion (beginning-of-line 2)
+ ;; (point))))
+ ;; t)
+
+ ;; If that place is not the beginning of the line,
+ ;; break the line there.
+ (if (save-excursion
+ (goto-char fill-point)
+ (not (or (bolp) (eolp)))) ; 97/3/14 jhod: during kinsoku processing it is possible to move beyond
+ (let ((prev-column (current-column)))
+ ;; If point is at the fill-point, do not `save-excursion'.
+ ;; Otherwise, if a comment prefix or fill-prefix is inserted,
+ ;; point will end up before it rather than after it.
+ (if (save-excursion
+ (skip-chars-backward " \t")
+ (= (point) fill-point))
+ ;; 1999-09-17 hniksic: turn off Kinsoku until
+ ;; it's debugged.
+ (funcall comment-line-break-function)
+ ;; 97/3/14 jhod: Kinsoku processing
+; ;(indent-new-comment-line)
+; (let ((spacep (memq (char-before (point)) '(?\ ?\t))))
+; (funcall comment-line-break-function)
+; ;; if user type space explicitly, leave SPC
+; ;; even if there is no WAN.
+; (if spacep
+; (save-excursion
+; (goto-char fill-point)
+; ;; put SPC except that there is SPC
+; ;; already or there is sentence end.
+; (or (memq (char-after (point)) '(?\ ?\t))
+; (fill-end-of-sentence-p)
+; (insert ?\ )))))
+ (save-excursion
+ (goto-char fill-point)
+ (funcall comment-line-break-function)))
+ ;; If making the new line didn't reduce the hpos of
+ ;; the end of the line, then give up now;
+ ;; trying again will not help.
+ (if (>= (current-column) prev-column)
+ (setq give-up t)))
+ ;; No place to break => stop trying.
+ (setq give-up t)))))))
+
+;; Put FSF one in until I can one or the other working properly, then the
+;; other one is history.
+;(defun fsf:do-auto-fill ()
+; (let (fc justify
+; ;; bol
+; give-up
+; (fill-prefix fill-prefix))
+; (if (or (not (setq justify (current-justification)))
+; (null (setq fc (current-fill-column)))
+; (and (eq justify 'left)
+; (<= (current-column) fc))
+; (save-excursion (beginning-of-line)
+; ;; (setq bol (point))
+; (and auto-fill-inhibit-regexp
+; (looking-at auto-fill-inhibit-regexp))))
+; nil ;; Auto-filling not required
+; (if (memq justify '(full center right))
+; (save-excursion (unjustify-current-line)))
+
+; ;; Choose a fill-prefix automatically.
+; (if (and adaptive-fill-mode
+; (or (null fill-prefix) (string= fill-prefix "")))
+; (let ((prefix
+; (fill-context-prefix
+; (save-excursion (backward-paragraph 1) (point))
+; (save-excursion (forward-paragraph 1) (point))
+; ;; Don't accept a non-whitespace fill prefix
+; ;; from the first line of a paragraph.
+; "^[ \t]*$")))
+; (and prefix (not (equal prefix ""))
+; (setq fill-prefix prefix))))
+
+; (while (and (not give-up) (> (current-column) fc))
+; ;; Determine where to split the line.
+; (let ((fill-point
+; (let ((opoint (point))
+; bounce
+; (first t))
+; (save-excursion
+; (move-to-column (1+ fc))
+; ;; Move back to a word boundary.
+; (while (or first
+; ;; If this is after period and a single space,
+; ;; move back once more--we don't want to break
+; ;; the line there and make it look like a
+; ;; sentence end.
+; (and (not (bobp))
+; (not bounce)
+; sentence-end-double-space
+; (save-excursion (backward-char 1)
+; (and (looking-at "\\. ")
+; (not (looking-at "\\. "))))))
+; (setq first nil)
+; (skip-chars-backward "^ \t\n")
+; ;; If we find nowhere on the line to break it,
+; ;; break after one word. Set bounce to t
+; ;; so we will not keep going in this while loop.
+; (if (bolp)
+; (progn
+; (re-search-forward "[ \t]" opoint t)
+; (setq bounce t)))
+; (skip-chars-backward " \t"))
+; ;; Let fill-point be set to the place where we end up.
+; (point)))))
+; ;; If that place is not the beginning of the line,
+; ;; break the line there.
+; (if (save-excursion
+; (goto-char fill-point)
+; (not (bolp)))
+; (let ((prev-column (current-column)))
+; ;; If point is at the fill-point, do not `save-excursion'.
+; ;; Otherwise, if a comment prefix or fill-prefix is inserted,
+; ;; point will end up before it rather than after it.
+; (if (save-excursion
+; (skip-chars-backward " \t")
+; (= (point) fill-point))
+; (funcall comment-line-break-function t)
+; (save-excursion
+; (goto-char fill-point)
+; (funcall comment-line-break-function t)))
+; ;; Now do justification, if required
+; (if (not (eq justify 'left))
+; (save-excursion
+; (end-of-line 0)
+; (justify-current-line justify nil t)))
+; ;; If making the new line didn't reduce the hpos of
+; ;; the end of the line, then give up now;
+; ;; trying again will not help.
+; (if (>= (current-column) prev-column)
+; (setq give-up t)))
+; ;; No place to break => stop trying.
+; (setq give-up t))))
+; ;; Justify last line.
+; (justify-current-line justify t t)
+; t)))
+
+(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 auto-fill-mode (&optional arg)
+ "Toggle auto-fill mode.
+With arg, turn auto-fill mode on if and only if arg is positive.
+In Auto-Fill mode, inserting a space at a column beyond `current-fill-column'
+automatically breaks the line at a previous space.
+
+The value of `normal-auto-fill-function' specifies the function to use
+for `auto-fill-function' when turning Auto Fill mode on."
+ (interactive "P")
+ (prog1 (setq auto-fill-function
+ (if (if (null arg)
+ (not auto-fill-function)
+ (> (prefix-numeric-value arg) 0))
+ normal-auto-fill-function
+ nil))
+ (redraw-modeline)))
+
+;; This holds a document string used to document auto-fill-mode.
+(defun auto-fill-function ()
+ "Automatically break line at a previous space, in insertion of text."
+ nil)
+
+(defun turn-on-auto-fill ()
+ "Unconditionally turn on Auto Fill mode."
+ (interactive)
+ (auto-fill-mode 1))
+
+(defun set-fill-column (arg)
+ "Set `fill-column' to specified argument.
+Just \\[universal-argument] as argument means to use the current column
+The variable `fill-column' has a separate value for each buffer."
+ (interactive "_P") ; XEmacs
+ (cond ((integerp arg)
+ (setq fill-column arg))
+ ((consp arg)
+ (setq fill-column (current-column)))
+ ;; Disallow missing argument; it's probably a typo for C-x C-f.
+ (t
+ (error "set-fill-column requires an explicit argument")))
+ (lmessage 'command "fill-column set to %d" fill-column))
+\f
+(defcustom comment-multi-line t ; XEmacs - this works well with adaptive fill
+ "*Non-nil means \\[indent-new-comment-line] should continue same comment
+on new line, with no new terminator or starter.
+This is obsolete because you might as well use \\[newline-and-indent]."
+ :type 'boolean
+ :group 'fill-comments)
+
+(defun indent-new-comment-line (&optional soft)
+ "Break line at point and indent, continuing comment if within one.
+This indents the body of the continued comment
+under the previous comment line.
+
+This command is intended for styles where you write a comment per line,
+starting a new comment (and terminating it if necessary) on each line.
+If you want to continue one comment across several lines, use \\[newline-and-indent].
+
+If a fill column is specified, it overrides the use of the comment column
+or comment indentation.
+
+The inserted newline is marked hard if `use-hard-newlines' is true,
+unless optional argument SOFT is non-nil."
+ (interactive)
+ (let (comcol comstart)
+ (skip-chars-backward " \t")
+ ;; 97/3/14 jhod: Kinsoku processing
+ (if (featurep 'mule)
+ (kinsoku-process))
+ (delete-region (point)
+ (progn (skip-chars-forward " \t")
+ (point)))
+ (if soft (insert ?\n) (newline 1))
+ (if fill-prefix
+ (progn
+ (indent-to-left-margin)
+ (insert fill-prefix))
+ ;; #### - Eric Eide reverts to v18 semantics for this function in
+ ;; fa-extras, which I'm not gonna do. His changes are to (1) execute
+ ;; the save-excursion below unconditionally, and (2) uncomment the check
+ ;; for (not comment-multi-line) further below. --Stig
+ ;;#### jhod: probably need to fix this for kinsoku processing
+ (if (not comment-multi-line)
+ (save-excursion
+ (if (and comment-start-skip
+ (let ((opoint (point)))
+ (forward-line -1)
+ (re-search-forward comment-start-skip opoint t)))
+ ;; The old line is a comment.
+ ;; Set WIN to the pos of the comment-start.
+ ;; But if the comment is empty, look at preceding lines
+ ;; to find one that has a nonempty comment.
+
+ ;; If comment-start-skip contains a \(...\) pair,
+ ;; the real comment delimiter starts at the end of that pair.
+ (let ((win (or (match-end 1) (match-beginning 0))))
+ (while (and (eolp) (not (bobp))
+ (let (opoint)
+ (beginning-of-line)
+ (setq opoint (point))
+ (forward-line -1)
+ (re-search-forward comment-start-skip opoint t)))
+ (setq win (or (match-end 1) (match-beginning 0))))
+ ;; Indent this line like what we found.
+ (goto-char win)
+ (setq comcol (current-column))
+ (setq comstart
+ (buffer-substring (point) (match-end 0)))))))
+ (if (and comcol (not fill-prefix)) ; XEmacs - (ENE) from fa-extras.
+ (let ((comment-column comcol)
+ (comment-start comstart)
+ (block-comment-start comstart)
+ (comment-end comment-end))
+ (and comment-end (not (equal comment-end ""))
+ ; (if (not comment-multi-line)
+ (progn
+ (backward-char 1)
+ (insert comment-end)
+ (forward-char 1))
+ ; (setq comment-column (+ comment-column (length comment-start))
+ ; comment-start "")
+ ; )
+ )
+ (if (not (eolp))
+ (setq comment-end ""))
+ (insert ?\n)
+ (backward-char 1)
+ (indent-for-comment)
+ (save-excursion
+ ;; Make sure we delete the newline inserted above.
+ (end-of-line)
+ (delete-char 1)))
+ (indent-according-to-mode)))))
+
+\f
+(defun set-selective-display (arg)
+ "Set `selective-display' to ARG; clear it if no arg.
+When the value of `selective-display' is a number > 0,
+lines whose indentation is >= that value are not displayed.
+The variable `selective-display' has a separate value for each buffer."
+ (interactive "P")
+ (if (eq selective-display t)
+ (error "selective-display already in use for marked lines"))
+ (let ((current-vpos
+ (save-restriction
+ (narrow-to-region (point-min) (point))
+ (goto-char (window-start))
+ (vertical-motion (window-height)))))
+ (setq selective-display
+ (and arg (prefix-numeric-value arg)))
+ (recenter current-vpos))
+ (set-window-start (selected-window) (window-start (selected-window)))
+ ;; #### doesn't localize properly:
+ (princ "selective-display set to " t)
+ (prin1 selective-display t)
+ (princ "." t))
+
+;; XEmacs
+(defun nuke-selective-display ()
+ "Ensure that the buffer is not in selective-display mode.
+If `selective-display' is t, then restore the buffer text to its original
+state before disabling selective display."
+ ;; by Stig@hackvan.com
+ (interactive)
+ (and (eq t selective-display)
+ (save-excursion
+ (save-restriction
+ (widen)
+ (goto-char (point-min))
+ (let ((mod-p (buffer-modified-p))
+ (buffer-read-only nil))
+ (while (search-forward "\r" nil t)
+ (delete-char -1)
+ (insert "\n"))
+ (set-buffer-modified-p mod-p)
+ ))))
+ (setq selective-display nil))
+
+(add-hook 'change-major-mode-hook 'nuke-selective-display)
+
+(defconst overwrite-mode-textual " Ovwrt"
+ "The string displayed in the mode line when in overwrite mode.")
+(defconst overwrite-mode-binary " Bin Ovwrt"
+ "The string displayed in the mode line when in binary overwrite mode.")
+
+(defun overwrite-mode (arg)
+ "Toggle overwrite mode.
+With arg, enable overwrite mode if arg is positive, else disable.
+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")
+ (setq overwrite-mode
+ (if (if (null arg) (not overwrite-mode)
+ (> (prefix-numeric-value arg) 0))
+ 'overwrite-mode-textual))
+ (redraw-modeline))
+
+(defun binary-overwrite-mode (arg)
+ "Toggle binary overwrite mode.
+With arg, enable binary overwrite mode if arg is positive, else disable.
+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
+`overwrite-mode' variable to `overwrite-mode-binary'."
+ (interactive "P")
+ (setq overwrite-mode
+ (if (if (null arg)
+ (not (eq overwrite-mode 'overwrite-mode-binary))
+ (> (prefix-numeric-value arg) 0))
+ 'overwrite-mode-binary))
+ (redraw-modeline))
+\f
+(defcustom line-number-mode nil
+ "*Non-nil means display line number in modeline."
+ :type 'boolean
+ :group 'editing-basics)
+
+(defun line-number-mode (arg)
+ "Toggle Line Number mode.
+With arg, enable Line Number mode if arg is positive, else disable.
+When Line Number mode is enabled, the line number appears
+in the mode line."
+ (interactive "P")
+ (setq line-number-mode
+ (if (null arg) (not line-number-mode)
+ (> (prefix-numeric-value arg) 0)))
+ (redraw-modeline))
+
+(defcustom column-number-mode nil
+ "*Non-nil means display column number in mode line."
+ :type 'boolean
+ :group 'editing-basics)
+
+(defun column-number-mode (arg)
+ "Toggle Column Number mode.
+With arg, enable Column Number mode if arg is positive, else disable.
+When Column Number mode is enabled, the column number appears
+in the mode line."
+ (interactive "P")
+ (setq column-number-mode
+ (if (null arg) (not column-number-mode)
+ (> (prefix-numeric-value arg) 0)))
+ (redraw-modeline))
+
+\f
+(defcustom blink-matching-paren t
+ "*Non-nil means show matching open-paren when close-paren is inserted."
+ :type 'boolean
+ :group 'paren-blinking)
+
+(defcustom blink-matching-paren-on-screen t
+ "*Non-nil means show matching open-paren when it is on screen.
+nil means don't show it (but the open-paren can still be shown
+when it is off screen."
+ :type 'boolean
+ :group 'paren-blinking)
+
+(defcustom blink-matching-paren-distance 12000
+ "*If non-nil, is maximum distance to search for matching open-paren."
+ :type '(choice integer (const nil))
+ :group 'paren-blinking)
+
+(defcustom blink-matching-delay 1
+ "*The number of seconds that `blink-matching-open' will delay at a match."
+ :type 'number
+ :group 'paren-blinking)
+
+(defcustom blink-matching-paren-dont-ignore-comments nil
+ "*Non-nil means `blink-matching-paren' should not ignore comments."
+ :type 'boolean
+ :group 'paren-blinking)
+
+(defun blink-matching-open ()
+ "Move cursor momentarily to the beginning of the sexp before point."
+ (interactive "_") ; XEmacs
+ (and (> (point) (1+ (point-min)))
+ blink-matching-paren
+ ;; Verify an even number of quoting characters precede the close.
+ (= 1 (logand 1 (- (point)
+ (save-excursion
+ (backward-char 1)
+ (skip-syntax-backward "/\\")
+ (point)))))
+ (let* ((oldpos (point))
+ (blinkpos)
+ (mismatch))
+ (save-excursion
+ (save-restriction
+ (if blink-matching-paren-distance
+ (narrow-to-region (max (point-min)
+ (- (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
+ (/= (char-syntax (char-after blinkpos))
+ ?\$)
+ (setq mismatch
+ (or (null (matching-paren (char-after blinkpos)))
+ (/= (char-after (1- oldpos))
+ (matching-paren (char-after blinkpos))))))
+ (if mismatch (setq blinkpos nil))
+ (if blinkpos
+ (progn
+ (goto-char blinkpos)
+ (if (pos-visible-in-window-p)
+ (and blink-matching-paren-on-screen
+ (progn
+ (auto-show-make-point-visible)
+ (sit-for blink-matching-delay)))
+ (goto-char blinkpos)
+ (lmessage 'command "Matches %s"
+ ;; Show what precedes the open in its line, if anything.
+ (if (save-excursion
+ (skip-chars-backward " \t")
+ (not (bolp)))
+ (buffer-substring (progn (beginning-of-line) (point))
+ (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
+ (progn (end-of-line) (point)))
+ ;; 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")
+ (beginning-of-line)
+ (point))
+ (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))))))))
+ (cond (mismatch
+ (display-message 'no-log "Mismatched parentheses"))
+ ((not blink-matching-paren-distance)
+ (display-message 'no-log "Unmatched parenthesis"))))))))
+
+;Turned off because it makes dbx bomb out.
+(setq blink-paren-function 'blink-matching-open)
+\f
+
+;; XEmacs: Some functions moved to cmdloop.el:
+;; keyboard-quit
+;; buffer-quit-function
+;; keyboard-escape-quit
+
+(defun assoc-ignore-case (key alist)
+ "Like `assoc', but assumes KEY is a string and ignores case when comparing."
+ (setq key (downcase key))
+ (let (element)
+ (while (and alist (not element))
+ (if (equal key (downcase (car (car alist))))
+ (setq element (car alist)))
+ (setq alist (cdr alist)))
+ element))
+
+\f
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; mail composition code ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defcustom mail-user-agent 'sendmail-user-agent
+ "*Your preference for a mail composition package.
+Various Emacs Lisp packages (e.g. reporter) require you to compose an
+outgoing email message. This variable lets you specify which
+mail-sending package you prefer.
+
+Valid values include:
+
+ sendmail-user-agent -- use the default Emacs Mail package
+ mh-e-user-agent -- use the Emacs interface to the MH mail system
+ message-user-agent -- use the GNUS mail sending package
+
+Additional valid symbols may be available; check with the author of
+your package for details."
+ :type '(radio (function-item :tag "Default Emacs mail"
+ :format "%t\n"
+ sendmail-user-agent)
+ (function-item :tag "Gnus mail sending package"
+ :format "%t\n"
+ message-user-agent)
+ (function :tag "Other"))
+ :group 'mail)
+
+(defun define-mail-user-agent (symbol composefunc sendfunc
+ &optional abortfunc hookvar)
+ "Define a symbol to identify a mail-sending package for `mail-user-agent'.
+
+SYMBOL can be any Lisp symbol. Its function definition and/or
+value as a variable do not matter for this usage; we use only certain
+properties on its property list, to encode the rest of the arguments.
+
+COMPOSEFUNC is program callable function that composes an outgoing
+mail message buffer. This function should set up the basics of the
+buffer without requiring user interaction. It should populate the
+standard mail headers, leaving the `to:' and `subject:' headers blank
+by default.
+
+COMPOSEFUNC should accept several optional arguments--the same
+arguments that `compose-mail' takes. See that function's documentation.
+
+SENDFUNC is the command a user would run to send the message.
+
+Optional ABORTFUNC is the command a user would run to abort the
+message. For mail packages that don't have a separate abort function,
+this can be `kill-buffer' (the equivalent of omitting this argument).
+
+Optional HOOKVAR is a hook variable that gets run before the message
+is actually sent. Callers that use the `mail-user-agent' may
+install a hook function temporarily on this hook variable.
+If HOOKVAR is nil, `mail-send-hook' is used.
+
+The properties used on SYMBOL are `composefunc', `sendfunc',
+`abortfunc', and `hookvar'."
+ (put symbol 'composefunc composefunc)
+ (put symbol 'sendfunc sendfunc)
+ (put symbol 'abortfunc (or abortfunc 'kill-buffer))
+ (put symbol 'hookvar (or hookvar 'mail-send-hook)))
+
+(define-mail-user-agent 'sendmail-user-agent
+ 'sendmail-user-agent-compose 'mail-send-and-exit)
+
+(define-mail-user-agent 'message-user-agent
+ 'message-mail 'message-send-and-exit
+ 'message-kill-buffer 'message-send-hook)
+
+(defun sendmail-user-agent-compose (&optional to subject other-headers continue
+ switch-function yank-action
+ send-actions)
+ (if switch-function
+ (let ((special-display-buffer-names nil)
+ (special-display-regexps nil)
+ (same-window-buffer-names nil)
+ (same-window-regexps nil))
+ (funcall switch-function "*mail*")))
+ (let ((cc (cdr (assoc-ignore-case "cc" other-headers)))
+ (in-reply-to (cdr (assoc-ignore-case "in-reply-to" other-headers))))
+ (or (mail continue to subject in-reply-to cc yank-action send-actions)
+ continue
+ (error "Message aborted"))
+ (save-excursion
+ (goto-char (point-min))
+ (search-forward mail-header-separator)
+ (beginning-of-line)
+ (while other-headers
+ (if (not (member (car (car other-headers)) '("in-reply-to" "cc")))
+ (insert (car (car other-headers)) ": "
+ (cdr (car other-headers)) "\n"))
+ (setq other-headers (cdr other-headers)))
+ t)))
+
+(define-mail-user-agent 'mh-e-user-agent
+ 'mh-user-agent-compose 'mh-send-letter 'mh-fully-kill-draft
+ 'mh-before-send-letter-hook)
+
+(defun compose-mail (&optional to subject other-headers continue
+ switch-function yank-action send-actions)
+ "Start composing a mail message to send.
+This uses the user's chosen mail composition package
+as selected with the variable `mail-user-agent'.
+The optional arguments TO and SUBJECT specify recipients
+and the initial Subject field, respectively.
+
+OTHER-HEADERS is an alist specifying additional
+header fields. Elements look like (HEADER . VALUE) where both
+HEADER and VALUE are strings.
+
+CONTINUE, if non-nil, says to continue editing a message already
+being composed.
+
+SWITCH-FUNCTION, if non-nil, is a function to use to
+switch to and display the buffer used for mail composition.
+
+YANK-ACTION, if non-nil, is an action to perform, if and when necessary,
+to insert the raw text of the message being replied to.
+It has the form (FUNCTION . ARGS). The user agent will apply
+FUNCTION to ARGS, to insert the raw text of the original message.
+\(The user agent will also run `mail-citation-hook', *after* the
+original text has been inserted in this way.)
+
+SEND-ACTIONS is a list of actions to call when the message is sent.
+Each action has the form (FUNCTION . ARGS)."
+ (interactive
+ (list nil nil nil current-prefix-arg))
+ (let ((function (get mail-user-agent 'composefunc)))
+ (funcall function to subject other-headers continue
+ switch-function yank-action send-actions)))
+
+(defun compose-mail-other-window (&optional to subject other-headers continue
+ yank-action send-actions)
+ "Like \\[compose-mail], but edit the outgoing message in another window."
+ (interactive
+ (list nil nil nil current-prefix-arg))
+ (compose-mail to subject other-headers continue
+ 'switch-to-buffer-other-window yank-action send-actions))
+
+
+(defun compose-mail-other-frame (&optional to subject other-headers continue
+ yank-action send-actions)
+ "Like \\[compose-mail], but edit the outgoing message in another frame."
+ (interactive
+ (list nil nil nil current-prefix-arg))
+ (compose-mail to subject other-headers continue
+ 'switch-to-buffer-other-frame yank-action send-actions))
+
+\f
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; set variable ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defun set-variable (var val)
+ "Set VARIABLE to VALUE. VALUE is a Lisp object.
+When using this interactively, supply a Lisp expression for VALUE.
+If you want VALUE to be a string, you must surround it with doublequotes.
+If VARIABLE is a specifier, VALUE is added to it as an instantiator in
+the 'global locale with nil tag set (see `set-specifier').
+
+If VARIABLE has a `variable-interactive' property, that is used as if
+it were the arg to `interactive' (which see) to interactively read the value."
+ (interactive
+ (let* ((var (read-variable "Set variable: "))
+ ;; #### - yucky code replication here. This should use something
+ ;; from help.el or hyper-apropos.el
+ (myhelp
+ #'(lambda ()
+ (with-output-to-temp-buffer "*Help*"
+ (prin1 var)
+ (princ "\nDocumentation:\n")
+ (princ (substring (documentation-property var 'variable-documentation)
+ 1))
+ (if (boundp var)
+ (let ((print-length 20))
+ (princ "\n\nCurrent value: ")
+ (prin1 (symbol-value var))))
+ (save-excursion
+ (set-buffer standard-output)
+ (help-mode))
+ nil)))
+ (minibuffer-help-form
+ '(funcall myhelp)))
+ (list var
+ (let ((prop (get var 'variable-interactive)))
+ (if prop
+ ;; Use VAR's `variable-interactive' property
+ ;; as an interactive spec for prompting.
+ (call-interactively (list 'lambda '(arg)
+ (list 'interactive prop)
+ 'arg))
+ (eval-minibuffer (format "Set %s to value: " var)))))))
+ (if (and (boundp var) (specifierp (symbol-value var)))
+ (set-specifier (symbol-value var) val)
+ (set var val)))
+
+\f
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; case changing code ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; A bunch of stuff was moved elsewhere:
+;; completion-list-mode-map
+;; completion-reference-buffer
+;; completion-base-size
+;; delete-completion-window
+;; previous-completion
+;; next-completion
+;; choose-completion
+;; choose-completion-delete-max-match
+;; choose-completion-string
+;; completion-list-mode
+;; completion-fixup-function
+;; completion-setup-function
+;; switch-to-completions
+;; event stuffs
+;; keypad stuffs
+
+;; The rest of this file is not in Lisp in FSF
+(defun capitalize-region-or-word (arg)
+ "Capitalize the selected region or the following word (or ARG words)."
+ (interactive "p")
+ (if (region-active-p)
+ (capitalize-region (region-beginning) (region-end))
+ (capitalize-word arg)))
+
+(defun upcase-region-or-word (arg)
+ "Upcase the selected region or the following word (or ARG words)."
+ (interactive "p")
+ (if (region-active-p)
+ (upcase-region (region-beginning) (region-end))
+ (upcase-word arg)))
+
+(defun downcase-region-or-word (arg)
+ "Downcase the selected region or the following word (or ARG words)."
+ (interactive "p")
+ (if (region-active-p)
+ (downcase-region (region-beginning) (region-end))
+ (downcase-word arg)))
+
+;; #### not localized
+(defvar uncapitalized-title-words
+ '("the" "a" "an" "in" "of" "for" "to" "and" "but" "at" "on" "as" "by"))
+
+(defvar uncapitalized-title-word-regexp
+ (concat "[ \t]*\\(" (mapconcat #'identity uncapitalized-title-words "\\|")
+ "\\)\\>"))
+
+(defun capitalize-string-as-title (string)
+ "Capitalize the words in the string, except for small words (as in titles).
+The words not capitalized are specified in `uncapitalized-title-words'."
+ (let ((buffer (get-buffer-create " *capitalize-string-as-title*")))
+ (unwind-protect
+ (progn
+ (insert-string string buffer)
+ (capitalize-region-as-title 1 (point-max buffer) buffer)
+ (buffer-string buffer))
+ (kill-buffer buffer))))
+
+(defun capitalize-region-as-title (b e &optional buffer)
+ "Capitalize the words in the region, except for small words (as in titles).
+The words not capitalized are specified in `uncapitalized-title-words'."
+ (interactive "r")
+ (save-excursion
+ (and buffer
+ (set-buffer buffer))
+ (save-restriction
+ (narrow-to-region b e)
+ (goto-char (point-min))
+ (let ((first t))
+ (while (< (point) (point-max))
+ (if (or first
+ (not (looking-at uncapitalized-title-word-regexp)))
+ (capitalize-word 1)
+ (forward-word 1))
+ (setq first nil))))))
+
+\f
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; zmacs active region code ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; Most of the zmacs code is now in elisp. The only thing left in C
+;; are the variables zmacs-regions, zmacs-region-active-p and
+;; zmacs-region-stays plus the function zmacs_update_region which
+;; simply calls the lisp level zmacs-update-region. It must remain
+;; for convenience, since it is called by core C code.
+
+;; XEmacs
+(defun activate-region ()
+ "Activate the region, if `zmacs-regions' is true.
+Setting `zmacs-regions' to true causes LISPM-style active regions to be used.
+This function has no effect if `zmacs-regions' is false."
+ (interactive)
+ (and zmacs-regions (zmacs-activate-region)))
+
+;; XEmacs
+(defsubst region-exists-p ()
+ "Return t if the region exists.
+If active regions are in use (i.e. `zmacs-regions' is true), this means that
+ the region is active. Otherwise, this means that the user has pushed
+ a mark in this buffer at some point in the past.
+The functions `region-beginning' and `region-end' can be used to find the
+ limits of the region.
+
+You should use this, *NOT* `region-active-p', in a menu item
+specification that you want grayed out when the region is not active:
+
+ [ ... ... :active (region-exists-p)]
+
+This correctly caters to the user's setting of `zmacs-regions'."
+ (not (null (mark))))
+
+;; XEmacs
+(defun region-active-p ()
+ "Return non-nil if the region is active in the current buffer.
+If `zmacs-regions' is true, this is equivalent to `region-exists-p'.
+Otherwise, this function always returns false.
+
+You should generally *NOT* use this in a menu item specification that you
+want grayed out when the region is not active. Instead, use this:
+
+ [ ... ... :active (region-exists-p)]
+
+Which correctly caters to the user's setting of `zmacs-regions'."
+ (and zmacs-regions zmacs-region-extent
+ (eq (current-buffer) (zmacs-region-buffer))))
+
+(defvar zmacs-activate-region-hook nil
+ "Function or functions called when the region becomes active;
+see the variable `zmacs-regions'.")
+
+(defvar zmacs-deactivate-region-hook nil
+ "Function or functions called when the region becomes inactive;
+see the variable `zmacs-regions'.")
+
+(defvar zmacs-update-region-hook nil
+ "Function or functions called when the active region changes.
+This is called after each command that sets `zmacs-region-stays' to t.
+See the variable `zmacs-regions'.")
+
+(defvar zmacs-region-extent nil
+ "The extent of the zmacs region; don't use this.")
+
+(defvar zmacs-region-rectangular-p nil
+ "Whether the zmacs region is a rectangle; don't use this.")
+
+(defun zmacs-make-extent-for-region (region)
+ ;; Given a region, this makes an extent in the buffer which holds that
+ ;; region, for highlighting purposes. If the region isn't associated
+ ;; with a buffer, this does nothing.
+ (let ((buffer nil)
+ (valid (and (extentp zmacs-region-extent)
+ (extent-object zmacs-region-extent)
+ (buffer-live-p (extent-object zmacs-region-extent))))
+ start end)
+ (cond ((consp region)
+ (setq start (min (car region) (cdr region))
+ end (max (car region) (cdr region))
+ valid (and valid
+ (eq (marker-buffer (car region))
+ (extent-object zmacs-region-extent)))
+ buffer (marker-buffer (car region))))
+ (t
+ (signal 'error (list "Invalid region" region))))
+
+ (if valid
+ nil
+ ;; The condition case is in case any of the extents are dead or
+ ;; otherwise incapacitated.
+ (condition-case ()
+ (if (listp zmacs-region-extent)
+ (mapc 'delete-extent zmacs-region-extent)
+ (delete-extent zmacs-region-extent))
+ (error nil)))
+
+ (if valid
+ (set-extent-endpoints zmacs-region-extent start end)
+ (setq zmacs-region-extent (make-extent start end buffer))
+
+ ;; Make the extent be closed on the right, which means that if
+ ;; characters are inserted exactly at the end of the extent, the
+ ;; extent will grow to cover them. This is important for shell
+ ;; buffers - suppose one makes a region, and one end is at point-max.
+ ;; If the shell produces output, that marker will remain at point-max
+ ;; (its position will increase). So it's important that the extent
+ ;; exhibit the same behavior, lest the region covered by the extent
+ ;; (the visual indication), and the region between point and mark
+ ;; (the actual region value) become different!
+ (set-extent-property zmacs-region-extent 'end-open nil)
+
+ ;; use same priority as mouse-highlighting so that conflicts between
+ ;; the region extent and a mouse-highlighted extent are resolved by
+ ;; the usual size-and-endpoint-comparison method.
+ (set-extent-priority zmacs-region-extent mouse-highlight-priority)
+ (set-extent-face zmacs-region-extent 'zmacs-region)
+
+ ;; #### It might be better to actually break
+ ;; default-mouse-track-next-move-rect out of mouse.el so that we
+ ;; can use its logic here.
+ (cond
+ (zmacs-region-rectangular-p
+ (setq zmacs-region-extent (list zmacs-region-extent))
+ (default-mouse-track-next-move-rect start end zmacs-region-extent)
+ ))
+
+ zmacs-region-extent)))
+
+(defun zmacs-region-buffer ()
+ "Return the buffer containing the zmacs region, or nil."
+ ;; #### this is horrible and kludgy! This stuff needs to be rethought.
+ (and zmacs-regions zmacs-region-active-p
+ (or (marker-buffer (mark-marker t))
+ (and (extent-live-p zmacs-region-extent)
+ (buffer-live-p (extent-object zmacs-region-extent))
+ (extent-object zmacs-region-extent)))))
+
+(defun zmacs-activate-region ()
+ "Make the region between `point' and `mark' be active (highlighted),
+if `zmacs-regions' is true. Only a very small number of commands
+should ever do this. Calling this function will call the hook
+`zmacs-activate-region-hook', if the region was previously inactive.
+Calling this function ensures that the region stays active after the
+current command terminates, even if `zmacs-region-stays' is not set.
+Returns t if the region was activated (i.e. if `zmacs-regions' if t)."
+ (if (not zmacs-regions)
+ nil
+ (setq zmacs-region-active-p t
+ zmacs-region-stays t
+ zmacs-region-rectangular-p (and (boundp 'mouse-track-rectangle-p)
+ mouse-track-rectangle-p))
+ (if (marker-buffer (mark-marker t))
+ (zmacs-make-extent-for-region (cons (point-marker t) (mark-marker t))))
+ (run-hooks 'zmacs-activate-region-hook)
+ t))
+
+(defun zmacs-deactivate-region ()
+ "Make the region between `point' and `mark' no longer be active,
+if `zmacs-regions' is true. You shouldn't need to call this; the
+command loop calls it when appropriate. Calling this function will
+call the hook `zmacs-deactivate-region-hook', if the region was
+previously active. Returns t if the region had been active, nil
+otherwise."
+ (if (not zmacs-region-active-p)
+ nil
+ (setq zmacs-region-active-p nil
+ zmacs-region-stays nil
+ zmacs-region-rectangular-p nil)
+ (if zmacs-region-extent
+ (let ((inhibit-quit t))
+ (if (listp zmacs-region-extent)
+ (mapc 'delete-extent zmacs-region-extent)
+ (delete-extent zmacs-region-extent))
+ (setq zmacs-region-extent nil)))
+ (run-hooks 'zmacs-deactivate-region-hook)
+ t))
+
+(defun zmacs-update-region ()
+ "Update the highlighted region between `point' and `mark'.
+You shouldn't need to call this; the command loop calls it
+when appropriate. Calling this function will call the hook
+`zmacs-update-region-hook', if the region is active."
+ (when zmacs-region-active-p
+ (when (marker-buffer (mark-marker t))
+ (zmacs-make-extent-for-region (cons (point-marker t)
+ (mark-marker t))))
+ (run-hooks 'zmacs-update-region-hook)))
+
+\f
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; message logging code ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;;; #### Should this be moved to a separate file, for clarity?
+;;; -hniksic
+
+;;; The `message-stack' is an alist of labels with messages; the first
+;;; message in this list is always in the echo area. A call to
+;;; `display-message' inserts a label/message pair at the head of the
+;;; list, and removes any other pairs with that label. Calling
+;;; `clear-message' causes any pair with matching label to be removed,
+;;; and this may cause the displayed message to change or vanish. If
+;;; the label arg is nil, the entire message stack is cleared.
+;;;
+;;; Message/error filtering will be a little tricker to implement than
+;;; logging, since messages can be built up incrementally
+;;; using clear-message followed by repeated calls to append-message
+;;; (this happens with error messages). For messages which aren't
+;;; created this way, filtering could be implemented at display-message
+;;; very easily.
+;;;
+;;; Bits of the logging code are borrowed from log-messages.el by
+;;; Robert Potter (rpotter@grip.cis.upenn.edu).
+
+;; need this to terminate the currently-displayed message
+;; ("Loading simple ...")
+(when (and
+ (not (fboundp 'display-message))
+ (not (featurep 'debug)))
+ (send-string-to-terminal "\n"))
+
+(defvar message-stack nil
+ "An alist of label/string pairs representing active echo-area messages.
+The first element in the list is currently displayed in the echo area.
+Do not modify this directly--use the `message' or
+`display-message'/`clear-message' functions.")
+
+(defvar remove-message-hook 'log-message
+ "A function or list of functions to be called when a message is removed
+from the echo area at the bottom of the frame. The label of the removed
+message is passed as the first argument, and the text of the message
+as the second argument.")
+
+(defcustom log-message-max-size 50000
+ "Maximum size of the \" *Message-Log*\" buffer. See `log-message'."
+ :type 'integer
+ :group 'log-message)
+(make-compatible-variable 'message-log-max 'log-message-max-size)
+
+;; We used to reject quite a lot of stuff here, but it was a bad idea,
+;; for two reasons:
+;;
+;; a) In most circumstances, you *want* to see the message in the log.
+;; The explicitly non-loggable messages should be marked as such by
+;; the issuer. Gratuitous non-displaying of random regexps made
+;; debugging harder, too (because various reasonable debugging
+;; messages would get eaten).
+;;
+;; b) It slowed things down. Yes, visibly.
+;;
+;; So, I left only a few of the really useless ones on this kill-list.
+;;
+;; --hniksic
+(defcustom log-message-ignore-regexps
+ '(;; Note: adding entries to this list slows down messaging
+ ;; significantly. Wherever possible, use message labels.
+
+ ;; Often-seen messages
+ "\\`\\'" ; empty message
+ "\\`\\(Beginning\\|End\\) of buffer\\'"
+ ;;"^Quit$"
+ ;; completions
+ ;; Many packages print this -- impossible to categorize
+ ;;"^Making completion list"
+ ;; Gnus
+ ;; "^No news is no news$"
+ ;; "^No more\\( unread\\)? newsgroups$"
+ ;; "^Opening [^ ]+ server\\.\\.\\."
+ ;; "^[^:]+: Reading incoming mail"
+ ;; "^Getting mail from "
+ ;; "^\\(Generating Summary\\|Sorting threads\\|Making sparse threads\\|Scoring\\|Checking new news\\|Expiring articles\\|Sending\\)\\.\\.\\."
+ ;; "^\\(Fetching headers for\\|Retrieving newsgroup\\|Reading active file\\)"
+ ;; "^No more\\( unread\\)? articles"
+ ;; "^Deleting article "
+ ;; W3
+ ;; "^Parsed [0-9]+ of [0-9]+ ([0-9]+%)"
+ )
+ "List of regular expressions matching messages which shouldn't be logged.
+See `log-message'.
+
+Ideally, packages which generate messages which might need to be ignored
+should label them with 'progress, 'prompt, or 'no-log, so they can be
+filtered by the log-message-ignore-labels."
+ :type '(repeat regexp)
+ :group 'log-message)
+
+(defcustom log-message-ignore-labels
+ '(help-echo command progress prompt no-log garbage-collecting auto-saving)
+ "List of symbols indicating labels of messages which shouldn't be logged.
+See `display-message' for some common labels. See also `log-message'."
+ :type '(repeat (symbol :tag "Label"))
+ :group 'log-message)
+
+;;Subsumed by view-lossage
+;; Not really, I'm adding it back by popular demand. -slb
+(defun show-message-log ()
+ "Show the \" *Message-Log*\" buffer, which contains old messages and errors."
+ (interactive)
+ (pop-to-buffer (get-buffer-create " *Message-Log*")))
+
+(defvar log-message-filter-function 'log-message-filter
+ "Value must be a function of two arguments: a symbol (label) and
+a string (message). It should return non-nil to indicate a message
+should be logged. Possible values include 'log-message-filter and
+'log-message-filter-errors-only.")
+
+(defun log-message-filter (label message)
+ "Default value of `log-message-filter-function'.
+Messages whose text matches one of the `log-message-ignore-regexps'
+or whose label appears in `log-message-ignore-labels' are not saved."
+ (let ((r log-message-ignore-regexps)
+ (ok (not (memq label log-message-ignore-labels))))
+ (save-match-data
+ (while (and r ok)
+ (when (string-match (car r) message)
+ (setq ok nil))
+ (setq r (cdr r))))
+ ok))
+
+(defun log-message-filter-errors-only (label message)
+ "For use as the `log-message-filter-function'. Only logs error messages."
+ (eq label 'error))
+
+(defun log-message (label message)
+ "Stuff a copy of the message into the \" *Message-Log*\" buffer,
+if it satisfies the `log-message-filter-function'.
+
+For use on `remove-message-hook'."
+ (when (and (not noninteractive)
+ (funcall log-message-filter-function label message))
+ ;; Use save-excursion rather than save-current-buffer because we
+ ;; change the value of point.
+ (save-excursion
+ (set-buffer (get-buffer-create " *Message-Log*"))
+ (goto-char (point-max))
+ ;(insert (concat (upcase (symbol-name label)) ": " message "\n"))
+ (let (extent)
+ ;; Mark multiline message with an extent, which `view-lossage'
+ ;; will recognize.
+ (when (string-match "\n" message)
+ (setq extent (make-extent (point) (point)))
+ (set-extent-properties extent '(end-open nil message-multiline t)))
+ (insert message "\n")
+ (when extent
+ (set-extent-property extent 'end-open t)))
+ (when (> (point-max) (max log-message-max-size (point-min)))
+ ;; Trim log to ~90% of max size.
+ (goto-char (max (- (point-max)
+ (truncate (* 0.9 log-message-max-size)))
+ (point-min)))
+ (forward-line 1)
+ (delete-region (point-min) (point))))))
+
+(defun message-displayed-p (&optional return-string frame)
+ "Return a non-nil value if a message is presently displayed in the\n\
+minibuffer's echo area. If optional argument RETURN-STRING is non-nil,\n\
+return a string containing the message, otherwise just return t."
+ ;; by definition, a message is displayed if the echo area buffer is
+ ;; non-empty (see also echo_area_active()). It had better also
+ ;; be the case that message-stack is nil exactly when the echo area
+ ;; is non-empty.
+ (let ((buffer (get-buffer " *Echo Area*")))
+ (and (< (point-min buffer) (point-max buffer))
+ (if return-string
+ (buffer-substring nil nil buffer)
+ t))))
+
+;;; Returns the string which remains in the echo area, or nil if none.
+;;; If label is nil, the whole message stack is cleared.
+(defun clear-message (&optional label frame stdout-p no-restore)
+ "Remove any message with the given LABEL from the message-stack,
+erasing it from the echo area if it's currently displayed there.
+If a message remains at the head of the message-stack and NO-RESTORE
+is nil, it will be displayed. The string which remains in the echo
+area will be returned, or nil if the message-stack is now empty.
+If LABEL is nil, the entire message-stack is cleared.
+
+Unless you need the return value or you need to specify a label,
+you should just use (message nil)."
+ (or frame (setq frame (selected-frame)))
+ (let ((clear-stream (and message-stack (eq 'stream (frame-type frame)))))
+ (remove-message label frame)
+ (let ((inhibit-read-only t)
+ (zmacs-region-stays zmacs-region-stays)) ; preserve from change
+ (erase-buffer " *Echo Area*"))
+ (if clear-stream
+ (send-string-to-terminal ?\n stdout-p))
+ (if no-restore
+ nil ; just preparing to put another msg up
+ (if message-stack
+ (let ((oldmsg (cdr (car message-stack))))
+ (raw-append-message oldmsg frame stdout-p)
+ oldmsg)
+ ;; #### Should we (redisplay-echo-area) here? Messes some
+ ;; things up.
+ nil))))
+
+(defun remove-message (&optional label frame)
+ ;; If label is nil, we want to remove all matching messages.
+ ;; Must reverse the stack first to log them in the right order.
+ (let ((log nil))
+ (while (and message-stack
+ (or (null label) ; null label means clear whole stack
+ (eq label (car (car message-stack)))))
+ (push (car message-stack) log)
+ (setq message-stack (cdr message-stack)))
+ (let ((s message-stack))
+ (while (cdr s)
+ (let ((msg (car (cdr s))))
+ (if (eq label (car msg))
+ (progn
+ (push msg log)
+ (setcdr s (cdr (cdr s))))
+ (setq s (cdr s))))))
+ ;; (possibly) log each removed message
+ (while log
+ (condition-case e
+ (run-hook-with-args 'remove-message-hook
+ (car (car log)) (cdr (car log)))
+ (error (setq remove-message-hook nil)
+ (lwarn 'message-log 'warning
+ "Error caught in `remove-message-hook': %s"
+ (error-message-string e))
+ (let ((inhibit-read-only t))
+ (erase-buffer " *Echo Area*"))
+ (signal (car e) (cdr e))))
+ (setq log (cdr log)))))
+
+(defun append-message (label message &optional frame stdout-p)
+ (or frame (setq frame (selected-frame)))
+ ;; Add a new entry to the message-stack, or modify an existing one
+ (let ((top (car message-stack)))
+ (if (eq label (car top))
+ (setcdr top (concat (cdr top) message))
+ (push (cons label message) message-stack)))
+ (raw-append-message message frame stdout-p))
+
+;; Really append the message to the echo area. no fiddling with
+;; message-stack.
+(defun raw-append-message (message &optional frame stdout-p)
+ (unless (equal message "")
+ (let ((inhibit-read-only t)
+ (zmacs-region-stays zmacs-region-stays)) ; preserve from change
+ (insert-string message " *Echo Area*")
+ ;; Conditionalizing on the device type in this way is not that clean,
+ ;; but neither is having a device method, as I originally implemented
+ ;; it: all non-stream devices behave in the same way. Perhaps
+ ;; the cleanest way is to make the concept of a "redisplayable"
+ ;; device, which stream devices are not. Look into this more if
+ ;; we ever create another non-redisplayable device type (e.g.
+ ;; processes? printers?).
+
+ ;; Don't redisplay the echo area if we are executing a macro.
+ (if (not executing-kbd-macro)
+ (if (eq 'stream (frame-type frame))
+ (send-string-to-terminal message stdout-p (frame-device frame))
+ (redisplay-echo-area))))))
+
+(defun display-message (label message &optional frame stdout-p)
+ "Print a one-line message at the bottom of the frame. First argument
+LABEL is an identifier for this message. MESSAGE is the string to display.
+Use `clear-message' to remove a labelled message.
+
+Here are some standard labels (those marked with `*' are not logged
+by default--see the `log-message-ignore-labels' variable):
+ message default label used by the `message' function
+ error default label used for reporting errors
+ * progress progress indicators like \"Converting... 45%\"
+ * prompt prompt-like messages like \"I-search: foo\"
+ * command helper command messages like \"Mark set\"
+ * no-log messages that should never be logged"
+ (clear-message label frame stdout-p t)
+ (append-message label message frame stdout-p))
+
+(defun current-message (&optional frame)
+ "Return the current message in the echo area, or nil.
+The FRAME argument is currently unused."
+ (cdr (car message-stack)))
+
+;;; may eventually be frame-dependent
+(defun current-message-label (&optional frame)
+ (car (car message-stack)))
+
+(defun message (fmt &rest args)
+ "Print a one-line message at the bottom of the frame.
+The arguments are the same as to `format'.
+
+If the only argument is nil, clear any existing message; let the
+minibuffer contents show."
+ ;; questionable junk in the C code
+ ;; (if (framep default-minibuffer-frame)
+ ;; (make-frame-visible default-minibuffer-frame))
+ (if (and (null fmt) (null args))
+ (prog1 nil
+ (clear-message nil))
+ (let ((str (apply 'format fmt args)))
+ (display-message 'message str)
+ str)))
+
+(defun lmessage (label fmt &rest args)
+ "Print a one-line message at the bottom of the frame.
+First argument LABEL is an identifier for this message. The rest of the
+arguments are the same as to `format'.
+
+See `display-message' for a list of standard labels."
+ (if (and (null fmt) (null args))
+ (prog1 nil
+ (clear-message label nil))
+ (let ((str (apply 'format fmt args)))
+ (display-message label str)
+ str)))
+
+\f
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; warning code ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defcustom log-warning-minimum-level 'info
+ "Minimum level of warnings that should be logged.
+The warnings in levels below this are completely ignored, as if they never
+happened.
+
+The recognized warning levels, in decreasing order of priority, are
+'emergency, 'alert, 'critical, 'error, 'warning, 'notice, 'info, and
+'debug.
+
+See also `display-warning-minimum-level'.
+
+You can also control which warnings are displayed on a class-by-class
+basis. See `display-warning-suppressed-classes' and
+`log-warning-suppressed-classes'."
+ :type '(choice (const emergency) (const alert) (const critical)
+ (const error) (const warning) (const notice)
+ (const info) (const debug))
+ :group 'warnings)
+
+(defcustom display-warning-minimum-level 'info
+ "Minimum level of warnings that should be displayed.
+The warnings in levels below this will be generated, but not
+displayed.
+
+The recognized warning levels, in decreasing order of priority, are
+'emergency, 'alert, 'critical, 'error, 'warning, 'notice, 'info, and
+'debug.
+
+See also `log-warning-minimum-level'.
+
+You can also control which warnings are displayed on a class-by-class
+basis. See `display-warning-suppressed-classes' and
+`log-warning-suppressed-classes'."
+ :type '(choice (const emergency) (const alert) (const critical)
+ (const error) (const warning) (const notice)
+ (const info) (const debug))
+ :group 'warnings)
+
+(defvar log-warning-suppressed-classes nil
+ "List of classes of warnings that shouldn't be logged or displayed.
+If any of the CLASS symbols associated with a warning is the same as
+any of the symbols listed here, the warning will be completely ignored,
+as it they never happened.
+
+NOTE: In most circumstances, you should *not* set this variable.
+Set `display-warning-suppressed-classes' instead. That way the suppressed
+warnings are not displayed but are still unobtrusively logged.
+
+See also `log-warning-minimum-level' and `display-warning-minimum-level'.")
+
+(defcustom display-warning-suppressed-classes nil
+ "List of classes of warnings that shouldn't be displayed.
+If any of the CLASS symbols associated with a warning is the same as
+any of the symbols listed here, the warning will not be displayed.
+The warning will still logged in the *Warnings* buffer (unless also
+contained in `log-warning-suppressed-classes'), but the buffer will
+not be automatically popped up.
+
+See also `log-warning-minimum-level' and `display-warning-minimum-level'."
+ :type '(repeat symbol)
+ :group 'warnings)
+
+(defvar warning-count 0
+ "Count of the number of warning messages displayed so far.")
+
+(defconst warning-level-alist '((emergency . 8)
+ (alert . 7)
+ (critical . 6)
+ (error . 5)
+ (warning . 4)
+ (notice . 3)
+ (info . 2)
+ (debug . 1)))
+
+(defun warning-level-p (level)
+ "Non-nil if LEVEL specifies a warning level."
+ (and (symbolp level) (assq level warning-level-alist)))
+
+;; If you're interested in rewriting this function, be aware that it
+;; could be called at arbitrary points in a Lisp program (when a
+;; built-in function wants to issue a warning, it will call out to
+;; this function the next time some Lisp code is evaluated). Therefore,
+;; this function *must* not permanently modify any global variables
+;; (e.g. the current buffer) except those that specifically apply
+;; to the warning system.
+
+(defvar before-init-deferred-warnings nil)
+
+(defun after-init-display-warnings ()
+ "Display warnings deferred till after the init file is run.
+Warnings that occur before then are deferred so that warning
+suppression in the .emacs file will be honored."
+ (while before-init-deferred-warnings
+ (apply 'display-warning (car before-init-deferred-warnings))
+ (setq before-init-deferred-warnings
+ (cdr before-init-deferred-warnings))))
+
+(add-hook 'after-init-hook 'after-init-display-warnings)
+
+(defun display-warning (class message &optional level)
+ "Display a warning message.
+CLASS should be a symbol describing what sort of warning this is, such
+as `resource' or `key-mapping'. A list of such symbols is also
+accepted. (Individual classes can be suppressed; see
+`display-warning-suppressed-classes'.) Optional argument LEVEL can
+be used to specify a priority for the warning, other than default priority
+`warning'. (See `display-warning-minimum-level'). The message is
+inserted into the *Warnings* buffer, which is made visible at appropriate
+times."
+ (or level (setq level 'warning))
+ (or (listp class) (setq class (list class)))
+ (check-argument-type 'warning-level-p level)
+ (if (and (not (featurep 'infodock))
+ (not init-file-loaded))
+ (push (list class message level) before-init-deferred-warnings)
+ (catch 'ignored
+ (let ((display-p t)
+ (level-num (cdr (assq level warning-level-alist))))
+ (if (< level-num (cdr (assq log-warning-minimum-level
+ warning-level-alist)))
+ (throw 'ignored nil))
+ (if (intersection class log-warning-suppressed-classes)
+ (throw 'ignored nil))
+
+ (if (< level-num (cdr (assq display-warning-minimum-level
+ warning-level-alist)))
+ (setq display-p nil))
+ (if (and display-p
+ (intersection class display-warning-suppressed-classes))
+ (setq display-p nil))
+ (let ((buffer (get-buffer-create "*Warnings*")))
+ (when display-p
+ ;; The C code looks at display-warning-tick to determine
+ ;; when it should call `display-warning-buffer'. Change it
+ ;; to get the C code's attention.
+ (incf display-warning-tick))
+ (with-current-buffer buffer
+ (goto-char (point-max))
+ (incf warning-count)
+ (princ (format "(%d) (%s/%s) "
+ warning-count
+ (mapconcat 'symbol-name class ",")
+ level)
+ buffer)
+ (princ message buffer)
+ (terpri buffer)
+ (terpri buffer)))))))
+
+(defun warn (&rest args)
+ "Display a warning message.
+The message is constructed by passing all args to `format'. The message
+is placed in the *Warnings* buffer, which will be popped up at the next
+redisplay. The class of the warning is `warning'. See also
+`display-warning'."
+ (display-warning 'warning (apply 'format args)))
+
+(defun lwarn (class level &rest args)
+ "Display a labeled warning message.
+CLASS should be a symbol describing what sort of warning this is, such
+as `resource' or `key-mapping'. A list of such symbols is also
+accepted. (Individual classes can be suppressed; see
+`display-warning-suppressed-classes'.) If non-nil, LEVEL can be used
+to specify a priority for the warning, other than default priority
+`warning'. (See `display-warning-minimum-level'). The message is
+inserted into the *Warnings* buffer, which is made visible at appropriate
+times.
+
+The rest of the arguments are passed to `format'."
+ (display-warning class (apply 'format args)
+ (or level 'warning)))
+
+(defvar warning-marker nil)
+
+;; When this function is called by the C code, all non-local exits are
+;; trapped and C-g is inhibited; therefore, it would be a very, very
+;; bad idea for this function to get into an infinite loop.
+
+(defun display-warning-buffer ()
+ "Make the buffer that contains the warnings be visible.
+The C code calls this periodically, right before redisplay."
+ (let ((buffer (get-buffer-create "*Warnings*")))
+ (when (or (not warning-marker)
+ (not (eq (marker-buffer warning-marker) buffer)))
+ (setq warning-marker (make-marker))
+ (set-marker warning-marker 1 buffer))
+ (if temp-buffer-show-function
+ (progn
+ (funcall temp-buffer-show-function buffer)
+ (mapc #'(lambda (win) (set-window-start win warning-marker))
+ (windows-of-buffer buffer nil t)))
+ (set-window-start (display-buffer buffer) warning-marker))
+ (set-marker warning-marker (point-max buffer) buffer)))
+
+\f
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; misc junk ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defun emacs-name ()
+ "Return the printable name of this instance of Emacs."
+ (cond ((featurep 'infodock) "InfoDock")
+ ((featurep 'xemacs) "XEmacs")
+ (t "Emacs")))
+
+(defun debug-print (format &rest args)
+ "Send a string to the debugging output.
+The string is formatted using (apply #'format FORMAT ARGS)."
+ (princ (apply #'format format args) 'external-debugging-output))
+
+;;; simple.el ends here
projects / chise / xemacs-chise.git / blobdiff