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Member "xemacs-21.4.22/lisp/abbrev.el" (12 Apr 2001, 20791 Bytes) of archive /linux/misc/xemacs-21.4.22.tar.gz:


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    1 ;;; abbrev.el --- abbrev mode commands for Emacs
    2 
    3 ;; Copyright (C) 1985, 1986, 1987, 1992, 1997 Free Software Foundation, Inc.
    4 
    5 ;; Maintainer: XEmacs Development Team
    6 ;; Keywords: abbrev, dumped
    7 
    8 ;; This file is part of XEmacs.
    9 
   10 ;; XEmacs is free software; you can redistribute it and/or modify it
   11 ;; under the terms of the GNU General Public License as published by
   12 ;; the Free Software Foundation; either version 2, or (at your option)
   13 ;; any later version.
   14 
   15 ;; XEmacs is distributed in the hope that it will be useful, but
   16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
   17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   18 ;; General Public License for more details.
   19 
   20 ;; You should have received a copy of the GNU General Public License
   21 ;; along with XEmacs; see the file COPYING.  If not, write to the Free
   22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   23 ;; 02111-1307, USA.
   24 
   25 ;;; Synched up with: FSF 19.34 (With some additions)
   26 
   27 ;;; Commentary:
   28 
   29 ;; This file is dumped with XEmacs.
   30 
   31 ;; This facility is documented in the Emacs Manual.
   32 
   33 ;;; Code:
   34 
   35 (defgroup abbrev nil
   36   "Abbreviation handling, typing shortcuts, macros."
   37   :tag "Abbreviations"
   38   :group 'editing)
   39 
   40 (defgroup abbrev-mode nil
   41   "Word abbreviations mode."
   42   :group 'abbrev)
   43 
   44 ;jwz: this is preloaded so don't ;;;###autoload
   45 (defcustom only-global-abbrevs nil "\
   46 *Non-nil means user plans to use global abbrevs only.
   47 Makes the commands to define mode-specific abbrevs define global ones instead."
   48   :type 'boolean
   49   :group 'abbrev)
   50 
   51 ;;; XEmacs: the following block of code is not in FSF
   52 (defvar abbrev-table-name-list '()
   53   "List of symbols whose values are abbrev tables.")
   54 
   55 (defvar abbrevs-changed nil
   56   "Set non-nil by defining or altering any word abbrevs.
   57 This causes `save-some-buffers' to offer to save the abbrevs.")
   58 
   59 (defun make-abbrev-table ()
   60   "Return a new, empty abbrev table object."
   61   (make-vector 59 0)) ; 59 is prime
   62 
   63 (defun clear-abbrev-table (table)
   64   "Undefine all abbrevs in abbrev table TABLE, leaving it empty."
   65   (fillarray table 0)
   66   (setq abbrevs-changed t)
   67   nil)
   68 
   69 
   70 (defun define-abbrev-table (table-name definitions)
   71   "Define TABLE-NAME (a symbol) as an abbrev table name.
   72 Define abbrevs in it according to DEFINITIONS, which is a list of elements
   73 of the form (ABBREVNAME EXPANSION HOOK USECOUNT)."
   74   (let ((table (and (boundp table-name) (symbol-value table-name))))
   75     (cond ((vectorp table))
   76           ((not table)
   77            (setq table (make-abbrev-table))
   78            (set table-name table)
   79            (setq abbrev-table-name-list (cons table-name abbrev-table-name-list)))
   80           (t
   81            (setq table (wrong-type-argument 'vectorp table))
   82            (set table-name table)))
   83     (while definitions
   84       (apply (function define-abbrev) table (car definitions))
   85       (setq definitions (cdr definitions)))))
   86 
   87 (defun define-abbrev (table name &optional expansion hook count)
   88   "Define an abbrev in TABLE named NAME, to expand to EXPANSION or call HOOK.
   89 NAME and EXPANSION are strings.  Hook is a function or `nil'.
   90 To undefine an abbrev, define it with an expansion of `nil'."
   91   (check-type expansion (or null string))
   92   (check-type count (or null integer))
   93   (check-type table vector)
   94   (let* ((sym (intern name table))
   95          (oexp (and (boundp sym) (symbol-value sym)))
   96          (ohook (and (fboundp sym) (symbol-function sym))))
   97     (unless (and (equal ohook hook)
   98          (stringp oexp)
   99          (stringp expansion)
  100          (string-equal oexp expansion))
  101       (setq abbrevs-changed t)
  102       ;; If there is a non-word character in the string, set the flag.
  103       (if (string-match "\\W" name)
  104       (set (intern " " table) nil)))
  105     (set sym expansion)
  106     (fset sym hook)
  107     (setplist sym (or count 0))
  108     name))
  109 
  110 
  111 ;; Fixup stuff from bootstrap def of define-abbrev-table in subr.el
  112 (let ((l abbrev-table-name-list))
  113   (while l
  114     (let ((fixup (car l)))
  115       (if (consp fixup)
  116           (progn
  117             (setq abbrev-table-name-list (delq fixup abbrev-table-name-list))
  118             (define-abbrev-table (car fixup) (cdr fixup))))
  119       (setq l (cdr l))))
  120   ;; These are no longer initialized by C code
  121   (if (not global-abbrev-table)
  122       (progn
  123         (setq global-abbrev-table (make-abbrev-table))
  124         (setq abbrev-table-name-list (cons 'global-abbrev-table
  125                                            abbrev-table-name-list))))
  126   (if (not fundamental-mode-abbrev-table)
  127       (progn
  128         (setq fundamental-mode-abbrev-table (make-abbrev-table))
  129         (setq abbrev-table-name-list (cons 'fundamental-mode-abbrev-table
  130                                            abbrev-table-name-list))))
  131   (and (eq major-mode 'fundamental-mode)
  132        (not local-abbrev-table)
  133        (setq local-abbrev-table fundamental-mode-abbrev-table)))
  134 
  135 
  136 (defun define-global-abbrev (name expansion)
  137   "Define ABBREV as a global abbreviation for EXPANSION."
  138   (interactive "sDefine global abbrev: \nsExpansion for %s: ")
  139   (define-abbrev global-abbrev-table
  140                  (downcase name) expansion nil 0))
  141 
  142 (defun define-mode-abbrev (name expansion)
  143   "Define ABBREV as a mode-specific abbreviation for EXPANSION."
  144   (interactive "sDefine mode abbrev: \nsExpansion for %s: ")
  145   (define-abbrev (or local-abbrev-table
  146                      (error "Major mode has no abbrev table"))
  147          (downcase name) expansion nil 0))
  148 
  149 (defun abbrev-symbol (abbrev &optional table)
  150   "Return the symbol representing abbrev named ABBREV.
  151 This symbol's name is ABBREV, but it is not the canonical symbol of that name;
  152 it is interned in an abbrev-table rather than the normal obarray.
  153 The value is nil if that abbrev is not defined.
  154 Optional second arg TABLE is abbrev table to look it up in.
  155 The default is to try buffer's mode-specific abbrev table, then global table."
  156   (let ((frob (function (lambda (table)
  157                 (let ((sym (intern-soft abbrev table)))
  158                   (if (and (boundp sym)
  159                            (stringp (symbol-value sym)))
  160                       sym
  161                       nil))))))
  162     (if table
  163         (funcall frob table)
  164         (or (and local-abbrev-table
  165                  (funcall frob local-abbrev-table))
  166             (funcall frob global-abbrev-table)))))
  167 
  168 (defun abbrev-expansion (abbrev &optional table)
  169   "Return the string that ABBREV expands into in the current buffer.
  170 Optionally specify an abbrev table as second arg;
  171 then ABBREV is looked up in that table only."
  172   (let ((sym (abbrev-symbol abbrev table)))
  173     (if sym
  174         (symbol-value sym)
  175         nil)))
  176 
  177 (defun unexpand-abbrev ()
  178   "Undo the expansion of the last abbrev that expanded.
  179 This differs from ordinary undo in that other editing done since then
  180 is not undone."
  181   (interactive)
  182   (if (or (< last-abbrev-location (point-min))
  183           (> last-abbrev-location (point-max))
  184           (not (stringp last-abbrev-text)))
  185       nil
  186     (let* ((opoint (point))
  187            (val (symbol-value last-abbrev))
  188            (adjust (length val)))
  189       ;; This isn't correct if (symbol-function last-abbrev-text)
  190       ;;  was used to do the expansion
  191       (goto-char last-abbrev-location)
  192       (delete-region last-abbrev-location (+ last-abbrev-location adjust))
  193       (insert last-abbrev-text)
  194       (setq adjust (- adjust (length last-abbrev-text)))
  195       (setq last-abbrev-text nil)
  196       (if (< last-abbrev-location opoint)
  197           (goto-char (- opoint adjust))
  198           (goto-char opoint)))))
  199 
  200 
  201 
  202 (defun insert-abbrev-table-description (name &optional human-readable)
  203   "Insert before point a full description of abbrev table named NAME.
  204 NAME is a symbol whose value is an abbrev table.
  205 If optional second argument HUMAN-READABLE is non-nil, insert a
  206 human-readable description. Otherwise the description is an
  207 expression, a call to `define-abbrev-table', which would define the
  208 abbrev table NAME exactly as it is currently defined."
  209   (let ((table (symbol-value name))
  210         (stream (current-buffer)))
  211     (message "Abbrev-table %s..." name)
  212     (if human-readable
  213         (progn
  214           (prin1 (list name) stream)
  215           ;; Need two terpri's or cretinous edit-abbrevs blows out
  216           (terpri stream)
  217           (terpri stream)
  218           (mapatoms (function (lambda (sym)
  219                       (if (symbol-value sym)
  220                           (let* ((n (prin1-to-string (symbol-name sym)))
  221                                  (pos (length n)))
  222                             (princ n stream)
  223                             (while (< pos 14)
  224                               (write-char ?\  stream)
  225                               (setq pos (1+ pos)))
  226                             (princ (format " %-5S " (symbol-plist sym))
  227                                    stream)
  228                             (if (not (symbol-function sym))
  229                                 (prin1 (symbol-value sym) stream)
  230                               (progn
  231                                 (setq n (prin1-to-string (symbol-value sym))
  232                                       pos (+ pos 6 (length n)))
  233                                 (princ n stream)
  234                                 (while (< pos 45)
  235                                   (write-char ?\  stream)
  236                                   (setq pos (1+ pos)))
  237                                 (prin1 (symbol-function sym) stream)))
  238                             (terpri stream)))))
  239                     table)
  240           (terpri stream))
  241         (progn
  242           (princ "\(define-abbrev-table '" stream)
  243           (prin1 name stream)
  244           (princ " '\(\n" stream)
  245           (mapatoms (function (lambda (sym)
  246                       (if (symbol-value sym)
  247                           (progn
  248                             (princ "    " stream)
  249                             (prin1 (list (symbol-name sym)
  250                                          (symbol-value sym)
  251                                          (symbol-function sym)
  252                                          (symbol-plist sym))
  253                                    stream)
  254                             (terpri stream)))))
  255                     table)
  256           (princ "    \)\)\n" stream)))
  257     (terpri stream))
  258   (message ""))
  259 ;;; End code not in FSF
  260 
  261 (defun abbrev-mode (arg)
  262   "Toggle abbrev mode.
  263 With argument ARG, enable abbrev mode if ARG is positive, else disable.
  264 In abbrev mode, inserting an abbreviation causes it to expand
  265 and be replaced by its expansion."
  266   (interactive "P")
  267   (setq abbrev-mode
  268     (if (null arg) (not abbrev-mode)
  269       (> (prefix-numeric-value arg) 0)))
  270   ;; XEmacs change
  271   (redraw-modeline))
  272 
  273 
  274 (defvar edit-abbrevs-map nil
  275   "Keymap used in edit-abbrevs.")
  276 (if edit-abbrevs-map
  277     nil
  278   (setq edit-abbrevs-map (make-sparse-keymap))
  279   ;; XEmacs change
  280   (set-keymap-name edit-abbrevs-map 'edit-abbrevs-map)
  281   (define-key edit-abbrevs-map "\C-x\C-s" 'edit-abbrevs-redefine)
  282   (define-key edit-abbrevs-map "\C-c\C-c" 'edit-abbrevs-redefine))
  283 
  284 (defun kill-all-abbrevs ()
  285   "Undefine all defined abbrevs."
  286   (interactive)
  287   (let ((tables abbrev-table-name-list))
  288     (while tables
  289       (clear-abbrev-table (symbol-value (car tables)))
  290       (setq tables (cdr tables)))))
  291 
  292 (defun insert-abbrevs ()
  293   "Insert after point a description of all defined abbrevs.
  294 Mark is set after the inserted text."
  295   (interactive)
  296   (push-mark
  297    (save-excursion
  298     (let ((tables abbrev-table-name-list))
  299       (while tables
  300     (insert-abbrev-table-description (car tables) t)
  301     (setq tables (cdr tables))))
  302     (point))))
  303 
  304 (defun list-abbrevs ()
  305   "Display a list of all defined abbrevs."
  306   (interactive)
  307   (display-buffer (prepare-abbrev-list-buffer)))
  308 
  309 (defun prepare-abbrev-list-buffer ()
  310   (save-excursion
  311     (set-buffer (get-buffer-create "*Abbrevs*"))
  312     (erase-buffer)
  313     (let ((tables abbrev-table-name-list))
  314       (while tables
  315     (insert-abbrev-table-description (car tables) t)
  316     (setq tables (cdr tables))))
  317     (goto-char (point-min))
  318     (set-buffer-modified-p nil)
  319     (edit-abbrevs-mode))
  320   (get-buffer-create "*Abbrevs*"))
  321 
  322 (defun edit-abbrevs-mode ()
  323   "Major mode for editing the list of abbrev definitions.
  324 \\{edit-abbrevs-map}"
  325   (interactive)
  326   (setq major-mode 'edit-abbrevs-mode)
  327   (setq mode-name "Edit-Abbrevs")
  328   (use-local-map edit-abbrevs-map))
  329 
  330 (defun edit-abbrevs ()
  331   "Alter abbrev definitions by editing a list of them.
  332 Selects a buffer containing a list of abbrev definitions.
  333 You can edit them and type \\<edit-abbrevs-map>\\[edit-abbrevs-redefine] to redefine abbrevs
  334 according to your editing.
  335 Buffer contains a header line for each abbrev table,
  336  which is the abbrev table name in parentheses.
  337 This is followed by one line per abbrev in that table:
  338 NAME   USECOUNT   EXPANSION   HOOK
  339 where NAME and EXPANSION are strings with quotes,
  340 USECOUNT is an integer, and HOOK is any valid function
  341 or may be omitted (it is usually omitted)."
  342   (interactive)
  343   (switch-to-buffer (prepare-abbrev-list-buffer)))
  344 
  345 (defun edit-abbrevs-redefine ()
  346   "Redefine abbrevs according to current buffer contents."
  347   (interactive)
  348   (define-abbrevs t)
  349   (set-buffer-modified-p nil))
  350 
  351 (defun define-abbrevs (&optional arg)
  352   "Define abbrevs according to current visible buffer contents.
  353 See documentation of `edit-abbrevs' for info on the format of the
  354 text you must have in the buffer.
  355 With argument, eliminate all abbrev definitions except
  356 the ones defined from the buffer now."
  357   (interactive "P")
  358   (if arg (kill-all-abbrevs))
  359   (save-excursion
  360    (goto-char (point-min))
  361    (while (and (not (eobp)) (re-search-forward "^(" nil t))
  362      (let* ((buf (current-buffer))
  363         (table (read buf))
  364         abbrevs name hook exp count)
  365        (forward-line 1)
  366        (while (progn (forward-line 1)
  367              (not (eolp)))
  368      (setq name (read buf) count (read buf) exp (read buf))
  369      (skip-chars-backward " \t\n\f")
  370      (setq hook (if (not (eolp)) (read buf)))
  371      (skip-chars-backward " \t\n\f")
  372      (setq abbrevs (cons (list name exp hook count) abbrevs)))
  373        (define-abbrev-table table abbrevs)))))
  374 
  375 (defun read-abbrev-file (&optional file quietly)
  376   "Read abbrev definitions from file written with `write-abbrev-file'.
  377 Optional argument FILE is the name of the file to read;
  378 it defaults to the value of `abbrev-file-name'.
  379 Optional second argument QUIETLY non-nil means don't print anything."
  380   (interactive "fRead abbrev file: ")
  381   (load (if (and file (> (length file) 0)) file abbrev-file-name)
  382     nil quietly)
  383   (setq save-abbrevs t abbrevs-changed nil))
  384 
  385 (defun quietly-read-abbrev-file (&optional file)
  386   "Read abbrev definitions from file written with `write-abbrev-file'.
  387 Optional argument FILE is the name of the file to read;
  388 it defaults to the value of `abbrev-file-name'.
  389 Does not print anything."
  390   ;(interactive "fRead abbrev file: ")
  391   (read-abbrev-file file t))
  392 
  393 (defun write-abbrev-file (file)
  394   "Write all abbrev definitions to a file of Lisp code.
  395 The file written can be loaded in another session to define the same abbrevs.
  396 The argument FILE is the file name to write."
  397   (interactive
  398    (list
  399     (read-file-name "Write abbrev file: "
  400             (file-name-directory (expand-file-name abbrev-file-name))
  401             abbrev-file-name)))
  402   (or (and file (> (length file) 0))
  403       (setq file abbrev-file-name))
  404   (save-excursion
  405    (set-buffer (get-buffer-create " write-abbrev-file"))
  406    (erase-buffer)
  407    (let ((tables abbrev-table-name-list))
  408      (while tables
  409        (insert-abbrev-table-description (car tables) nil)
  410        (setq tables (cdr tables))))
  411    (write-region 1 (point-max) file)
  412    (erase-buffer)))
  413 
  414 (defun abbrev-string-to-be-defined (arg)
  415   "Return the string for which an abbrev will be defined.
  416 ARG is the argument to `add-global-abbrev' or `add-mode-abbrev'."
  417   (if (and (not arg) (region-active-p)) (setq arg 0)
  418     (setq arg (prefix-numeric-value arg)))
  419   (and (>= arg 0)
  420        (buffer-substring
  421     (point)
  422     (if (= arg 0) (mark)
  423       (save-excursion (backward-word arg) (point))))))
  424 
  425 (defun add-mode-abbrev (arg)
  426   "Define mode-specific abbrev for last word(s) before point.
  427 Argument is how many words before point form the expansion;
  428 or zero means the region is the expansion.
  429 A negative argument means to undefine the specified abbrev.
  430 Reads the abbreviation in the minibuffer.
  431 
  432 Don't use this function in a Lisp program; use `define-abbrev' instead."
  433   ;; XEmacs change:
  434   (interactive "P")
  435   (add-abbrev
  436    (if only-global-abbrevs
  437        global-abbrev-table
  438      (or local-abbrev-table
  439      (error "No per-mode abbrev table")))
  440    "Mode" arg))
  441 
  442 (defun add-global-abbrev (arg)
  443   "Define global (all modes) abbrev for last word(s) before point.
  444 The prefix argument specifies the number of words before point that form the
  445 expansion; or zero means the region is the expansion.
  446 A negative argument means to undefine the specified abbrev.
  447 This command uses the minibuffer to read the abbreviation.
  448 
  449 Don't use this function in a Lisp program; use `define-abbrev' instead."
  450   ;; XEmacs change:
  451   (interactive "P")
  452   (add-abbrev global-abbrev-table "Global" arg))
  453 
  454 (defun add-abbrev (table type arg)
  455   "Add an abbreviation to abbrev table TABLE.
  456 TYPE is a string describing in English the kind of abbrev this will be
  457 (typically, \"global\" or \"mode-specific\"); this is used in
  458 prompting the user.  ARG is the number of words in the expansion.
  459 
  460 Return the symbol that internally represents the new abbrev, or nil if
  461 the user declines to confirm redefining an existing abbrev."
  462   ;; XEmacs change:
  463   (let ((exp (abbrev-string-to-be-defined arg))
  464     name)
  465     (setq name
  466       (read-string (format (if exp "%s abbrev for \"%s\": "
  467                  "Undefine %s abbrev: ")
  468                    type exp)))
  469     (set-text-properties 0 (length name) nil name)
  470     (if (or (null exp)
  471         (not (abbrev-expansion name table))
  472         (y-or-n-p (format "%s expands to \"%s\"; redefine? "
  473                   name (abbrev-expansion name table))))
  474     (define-abbrev table (downcase name) exp))))
  475 
  476 (defun inverse-abbrev-string-to-be-defined (arg)
  477   "Return the string for which an inverse abbrev will be defined.
  478 ARG is the argument to `inverse-add-global-abbrev' or
  479 `inverse-add-mode-abbrev'."
  480   (save-excursion
  481     (backward-word arg)
  482     (buffer-substring (point) (progn (forward-word 1) (point)))))
  483 
  484 (defun inverse-add-mode-abbrev (arg)
  485   "Define last word before point as a mode-specific abbrev.
  486 With prefix argument N, defines the Nth word before point.
  487 This command uses the minibuffer to read the expansion.
  488 Expands the abbreviation after defining it."
  489   (interactive "p")
  490   (inverse-add-abbrev
  491    (if only-global-abbrevs
  492        global-abbrev-table
  493      (or local-abbrev-table
  494      (error "No per-mode abbrev table")))
  495    "Mode" arg))
  496 
  497 (defun inverse-add-global-abbrev (arg)
  498   "Define last word before point as a global (mode-independent) abbrev.
  499 With prefix argument N, defines the Nth word before point.
  500 This command uses the minibuffer to read the expansion.
  501 Expands the abbreviation after defining it."
  502   (interactive "p")
  503   (inverse-add-abbrev global-abbrev-table "Global" arg))
  504 
  505 (defun inverse-add-abbrev (table type arg)
  506   (let (name nameloc exp)
  507     (save-excursion
  508      (backward-word arg)
  509      (setq name (buffer-substring (point) (progn (forward-word 1)
  510                            (setq nameloc (point))))))
  511     (set-text-properties 0 (length name) nil name)
  512     (setq exp (read-string (format "%s expansion for \"%s\": "
  513                    type name)))
  514     (if (or (not (abbrev-expansion name table))
  515         (y-or-n-p (format "%s expands to \"%s\"; redefine? "
  516                   name (abbrev-expansion name table))))
  517     (progn
  518      (define-abbrev table (downcase name) exp)
  519      (save-excursion
  520       (goto-char nameloc)
  521       (expand-abbrev))))))
  522 
  523 (defun abbrev-prefix-mark (&optional arg)
  524   "Mark current point as the beginning of an abbrev.
  525 Abbrev to be expanded starts here rather than at beginning of word.
  526 This way, you can expand an abbrev with a prefix: insert the prefix,
  527 use this command, then insert the abbrev."
  528   (interactive "P")
  529   (or arg (expand-abbrev))
  530   (setq abbrev-start-location (point-marker)
  531     abbrev-start-location-buffer (current-buffer))
  532   (let ((e (make-extent (point) (point))))
  533     (set-extent-begin-glyph e (make-glyph [string :data "-"]))))
  534 
  535 (defun expand-region-abbrevs (start end &optional noquery)
  536   "For abbrev occurrence in the region, offer to expand it.
  537 The user is asked to type y or n for each occurrence.
  538 A prefix argument means don't query; expand all abbrevs.
  539 If called from a Lisp program, arguments are START END &optional NOQUERY."
  540   (interactive "r\nP")
  541   (save-excursion
  542     (goto-char start)
  543     (let ((lim (- (point-max) end))
  544       pnt string)
  545       (while (and (not (eobp))
  546           (progn (forward-word 1)
  547              (<= (setq pnt (point)) (- (point-max) lim))))
  548     (if (abbrev-expansion
  549          (setq string
  550            (buffer-substring
  551             (save-excursion (backward-word) (point))
  552             pnt)))
  553         (if (or noquery (y-or-n-p (format "Expand `%s'? " string)))
  554         (expand-abbrev)))))))
  555 
  556 ;;; abbrev.el ends here