X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lisp%2Fsimple.el;fp=lisp%2Fsimple.el;h=b0666a1d7cc7bc58386c6866963be0a22972151d;hb=8dd5c14289d68929b069fa5078f10ea3905f6fa5;hp=0000000000000000000000000000000000000000;hpb=f82a8b0d39ee6a8fc9a5373f29b4761184dcc399;p=chise%2Fxemacs-chise.git diff --git a/lisp/simple.el b/lisp/simple.el new file mode 100644 index 0000000..b0666a1 --- /dev/null +++ b/lisp/simple.el @@ -0,0 +1,4592 @@ +;;; 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 \\\\[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 + +(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 + + +(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)) + + +;; 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))) + + +;;;; 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) + + +;;;; 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))))) + + + +;;;; 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)) + + +(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))))) + +;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))) + + +(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) + +;; 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)))) + +(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)))))) + + +(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))))) + + +(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))))) + +(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)) + +(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))))) + + +(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)) + +(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)) + + +(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) + + +;; 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)) + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; 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)) + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; 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))) + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; 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)))))) + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; 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))) + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; 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))) + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; 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))) + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; 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