code.delx.au - gnu-emacs/blob - lisp/abbrev.el

   1 ;;; abbrev.el --- abbrev mode commands for Emacs
   2
   3 ;; Copyright (C) 1985, 1986, 1987, 1992 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: FSF
   6 ;; Keywords: abbrev convenience
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it 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 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; This facility is documented in the Emacs Manual.
  28
  29 ;;; Code:
  30
  31 (defcustom only-global-abbrevs nil
  32   "*t means user plans to use global abbrevs only.
  33 This makes the commands that normally define mode-specific abbrevs
  34 define global abbrevs instead."
  35   :type 'boolean
  36   :group 'abbrev-mode
  37   :group 'convenience)
  38
  39 (defun abbrev-mode (&optional arg)
  40   "Toggle abbrev mode.
  41 With argument ARG, turn abbrev mode on iff ARG is positive.
  42 In abbrev mode, inserting an abbreviation causes it to expand
  43 and be replaced by its expansion."
  44   (interactive "P")
  45   (setq abbrev-mode
  46         (if (null arg) (not abbrev-mode)
  47           (> (prefix-numeric-value arg) 0)))
  48   (force-mode-line-update))
  49
  50 (defcustom abbrev-mode nil
  51   "Toggle abbrev mode.
  52 Non-nil means automatically expand abbrevs as they are inserted.
  53
  54 Changing it with \\[customize] sets the default value.
  55 Use the command `abbrev-mode' to enable or disable Abbrev mode in the current
  56 buffer."
  57   :type 'boolean
  58   :group 'abbrev-mode)
  59
  60 \f
  61 (defvar edit-abbrevs-map nil
  62   "Keymap used in edit-abbrevs.")
  63 (if edit-abbrevs-map
  64     nil
  65   (setq edit-abbrevs-map (make-sparse-keymap))
  66   (define-key edit-abbrevs-map "\C-x\C-s" 'edit-abbrevs-redefine)
  67   (define-key edit-abbrevs-map "\C-c\C-c" 'edit-abbrevs-redefine))
  68
  69 (defun kill-all-abbrevs ()
  70   "Undefine all defined abbrevs."
  71   (interactive)
  72   (let ((tables abbrev-table-name-list))
  73     (while tables
  74       (clear-abbrev-table (symbol-value (car tables)))
  75       (setq tables (cdr tables)))))
  76
  77 (defun copy-abbrev-table (table)
  78   "Make a new abbrev-table with the same abbrevs as TABLE."
  79   (let ((new-table (make-abbrev-table)))
  80     (mapatoms
  81      (lambda (symbol)
  82        (define-abbrev new-table
  83          (symbol-name symbol)
  84          (symbol-value symbol)
  85          (symbol-function symbol)))
  86      table)
  87     new-table))
  88
  89 (defun insert-abbrevs ()
  90   "Insert after point a description of all defined abbrevs.
  91 Mark is set after the inserted text."
  92   (interactive)
  93   (push-mark
  94    (save-excursion
  95     (let ((tables abbrev-table-name-list))
  96       (while tables
  97         (insert-abbrev-table-description (car tables) t)
  98         (setq tables (cdr tables))))
  99     (point))))
 100
 101 (defun list-abbrevs (&optional local)
 102   "Display a list of defined abbrevs.
 103 If LOCAL is non-nil, interactively when invoked with a
 104 prefix arg, display only local, i.e. mode-specific, abbrevs.
 105 Otherwise display all abbrevs."
 106   (interactive "P")
 107   (display-buffer (prepare-abbrev-list-buffer local)))
 108
 109 (defun abbrev-table-name (table)
 110   "Value is the name of abbrev table TABLE."
 111   (let ((tables abbrev-table-name-list)
 112         found)
 113     (while (and (not found) tables)
 114       (when (eq (symbol-value (car tables)) table)
 115         (setq found (car tables)))
 116       (setq tables (cdr tables)))
 117     found))
 118
 119 (defun prepare-abbrev-list-buffer (&optional local)
 120   (save-excursion
 121     (let ((table local-abbrev-table))
 122       (set-buffer (get-buffer-create "*Abbrevs*"))
 123       (erase-buffer)
 124       (if local
 125           (insert-abbrev-table-description (abbrev-table-name table) t)
 126         (dolist (table abbrev-table-name-list)
 127           (insert-abbrev-table-description table t)))
 128       (goto-char (point-min))
 129       (set-buffer-modified-p nil)
 130       (edit-abbrevs-mode)
 131       (current-buffer))))
 132
 133 (defun edit-abbrevs-mode ()
 134   "Major mode for editing the list of abbrev definitions.
 135 \\{edit-abbrevs-map}"
 136   (interactive)
 137   (setq major-mode 'edit-abbrevs-mode)
 138   (setq mode-name "Edit-Abbrevs")
 139   (use-local-map edit-abbrevs-map))
 140
 141 (defun edit-abbrevs ()
 142   "Alter abbrev definitions by editing a list of them.
 143 Selects a buffer containing a list of abbrev definitions.
 144 You can edit them and type \\<edit-abbrevs-map>\\[edit-abbrevs-redefine] to redefine abbrevs
 145 according to your editing.
 146 Buffer contains a header line for each abbrev table,
 147  which is the abbrev table name in parentheses.
 148 This is followed by one line per abbrev in that table:
 149 NAME   USECOUNT   EXPANSION   HOOK
 150 where NAME and EXPANSION are strings with quotes,
 151 USECOUNT is an integer, and HOOK is any valid function
 152 or may be omitted (it is usually omitted)."
 153   (interactive)
 154   (switch-to-buffer (prepare-abbrev-list-buffer)))
 155
 156 (defun edit-abbrevs-redefine ()
 157   "Redefine abbrevs according to current buffer contents."
 158   (interactive)
 159   (define-abbrevs t)
 160   (set-buffer-modified-p nil))
 161
 162 (defun define-abbrevs (&optional arg)
 163   "Define abbrevs according to current visible buffer contents.
 164 See documentation of `edit-abbrevs' for info on the format of the
 165 text you must have in the buffer.
 166 With argument, eliminate all abbrev definitions except
 167 the ones defined from the buffer now."
 168   (interactive "P")
 169   (if arg (kill-all-abbrevs))
 170   (save-excursion
 171    (goto-char (point-min))
 172    (while (and (not (eobp)) (re-search-forward "^(" nil t))
 173      (let* ((buf (current-buffer))
 174             (table (read buf))
 175             abbrevs name hook exp count)
 176        (forward-line 1)
 177        (while (progn (forward-line 1)
 178                      (not (eolp)))
 179          (setq name (read buf) count (read buf) exp (read buf))
 180          (skip-chars-backward " \t\n\f")
 181          (setq hook (if (not (eolp)) (read buf)))
 182          (skip-chars-backward " \t\n\f")
 183          (setq abbrevs (cons (list name exp hook count) abbrevs)))
 184        (define-abbrev-table table abbrevs)))))
 185
 186 (defun read-abbrev-file (&optional file quietly)
 187   "Read abbrev definitions from file written with `write-abbrev-file'.
 188 Optional argument FILE is the name of the file to read;
 189 it defaults to the value of `abbrev-file-name'.
 190 Optional second argument QUIETLY non-nil means don't display a message."
 191   (interactive "fRead abbrev file: ")
 192   (load (if (and file (> (length file) 0)) file abbrev-file-name)
 193         nil quietly)
 194   (setq abbrevs-changed nil))
 195
 196 (defun quietly-read-abbrev-file (&optional file)
 197   "Read abbrev definitions from file written with write-abbrev-file.
 198 Optional argument FILE is the name of the file to read;
 199 it defaults to the value of `abbrev-file-name'.
 200 Does not display any message."
 201   ;(interactive "fRead abbrev file: ")
 202   (read-abbrev-file file t))
 203
 204 (defun write-abbrev-file (file)
 205   "Write all abbrev definitions to a file of Lisp code.
 206 The file written can be loaded in another session to define the same abbrevs.
 207 The argument FILE is the file name to write."
 208   (interactive
 209    (list
 210     (read-file-name "Write abbrev file: "
 211                     (file-name-directory (expand-file-name abbrev-file-name))
 212                     abbrev-file-name)))
 213   (or (and file (> (length file) 0))
 214       (setq file abbrev-file-name))
 215   (save-excursion
 216    (set-buffer (get-buffer-create " write-abbrev-file"))
 217    (erase-buffer)
 218    (let ((tables abbrev-table-name-list))
 219      (while tables
 220        (insert-abbrev-table-description (car tables) nil)
 221        (setq tables (cdr tables))))
 222    (write-region (point-min) (point-max) file)
 223    (erase-buffer)))
 224 \f
 225 (defun add-mode-abbrev (arg)
 226   "Define mode-specific abbrev for last word(s) before point.
 227 Argument is how many words before point form the expansion;
 228 or zero means the region is the expansion.
 229 A negative argument means to undefine the specified abbrev.
 230 Reads the abbreviation in the minibuffer.
 231
 232 Don't use this function in a Lisp program; use `define-abbrev' instead."
 233   (interactive "p")
 234   (add-abbrev
 235    (if only-global-abbrevs
 236        global-abbrev-table
 237      (or local-abbrev-table
 238          (error "No per-mode abbrev table")))
 239    "Mode" arg))
 240
 241 (defun add-global-abbrev (arg)
 242   "Define global (all modes) abbrev for last word(s) before point.
 243 The prefix argument specifies the number of words before point that form the
 244 expansion; or zero means the region is the expansion.
 245 A negative argument means to undefine the specified abbrev.
 246 This command uses the minibuffer to read the abbreviation.
 247
 248 Don't use this function in a Lisp program; use `define-abbrev' instead."
 249   (interactive "p")
 250   (add-abbrev global-abbrev-table "Global" arg))
 251
 252 (defun add-abbrev (table type arg)
 253   (let ((exp (and (>= arg 0)
 254                   (buffer-substring-no-properties
 255                    (point)
 256                    (if (= arg 0) (mark)
 257                      (save-excursion (forward-word (- arg)) (point))))))
 258         name)
 259     (setq name
 260           (read-string (format (if exp "%s abbrev for \"%s\": "
 261                                  "Undefine %s abbrev: ")
 262                                type exp)))
 263     (set-text-properties 0 (length name) nil name)
 264     (if (or (null exp)
 265             (not (abbrev-expansion name table))
 266             (y-or-n-p (format "%s expands to \"%s\"; redefine? "
 267                               name (abbrev-expansion name table))))
 268         (define-abbrev table (downcase name) exp))))
 269
 270 (defun inverse-add-mode-abbrev (arg)
 271   "Define last word before point as a mode-specific abbrev.
 272 With prefix argument N, defines the Nth word before point.
 273 This command uses the minibuffer to read the expansion.
 274 Expands the abbreviation after defining it."
 275   (interactive "p")
 276   (inverse-add-abbrev
 277    (if only-global-abbrevs
 278        global-abbrev-table
 279      (or local-abbrev-table
 280          (error "No per-mode abbrev table")))
 281    "Mode" arg))
 282
 283 (defun inverse-add-global-abbrev (arg)
 284   "Define last word before point as a global (mode-independent) abbrev.
 285 With prefix argument N, defines the Nth word before point.
 286 This command uses the minibuffer to read the expansion.
 287 Expands the abbreviation after defining it."
 288   (interactive "p")
 289   (inverse-add-abbrev global-abbrev-table "Global" arg))
 290
 291 (defun inverse-add-abbrev (table type arg)
 292   (let (name exp start end)
 293     (save-excursion
 294       (forward-word (1+ (- arg)))
 295       (setq end (point))
 296       (backward-word 1)
 297       (setq start (point)
 298             name (buffer-substring-no-properties start end)))
 299
 300     (setq exp (read-string (format "%s expansion for \"%s\": " type name)
 301                            nil nil nil t))
 302     (when (or (not (abbrev-expansion name table))
 303               (y-or-n-p (format "%s expands to \"%s\"; redefine? "
 304                                 name (abbrev-expansion name table))))
 305       (define-abbrev table (downcase name) exp)
 306       (save-excursion
 307         (goto-char end)
 308         (expand-abbrev)))))
 309
 310 (defun abbrev-prefix-mark (&optional arg)
 311   "Mark current point as the beginning of an abbrev.
 312 Abbrev to be expanded starts here rather than at beginning of word.
 313 This way, you can expand an abbrev with a prefix: insert the prefix,
 314 use this command, then insert the abbrev."
 315   (interactive "P")
 316   (or arg (expand-abbrev))
 317   (setq abbrev-start-location (point-marker)
 318         abbrev-start-location-buffer (current-buffer))
 319   (insert "-"))
 320
 321 (defun expand-region-abbrevs (start end &optional noquery)
 322   "For abbrev occurrence in the region, offer to expand it.
 323 The user is asked to type y or n for each occurrence.
 324 A prefix argument means don't query; expand all abbrevs.
 325 If called from a Lisp program, arguments are START END &optional NOQUERY."
 326   (interactive "r\nP")
 327   (save-excursion
 328     (goto-char start)
 329     (let ((lim (- (point-max) end))
 330           pnt string)
 331       (while (and (not (eobp))
 332                   (progn (forward-word 1)
 333                          (<= (setq pnt (point)) (- (point-max) lim))))
 334         (if (abbrev-expansion
 335              (setq string
 336                    (buffer-substring-no-properties
 337                     (save-excursion (forward-word -1) (point))
 338                     pnt)))
 339             (if (or noquery (y-or-n-p (format "Expand `%s'? " string)))
 340                 (expand-abbrev)))))))
 341
 342 ;;; abbrev.el ends here