lisp/menu-bar.el

   1 ;;; menu-bar.el --- define a default menu bar.
   2
   3 ;; Copyright (C) 1993, 1994, 1995, 2000 Free Software Foundation, Inc.
   4
   5 ;; Author: RMS
   6 ;; Maintainer: FSF
   7 ;; Keywords: internal, mouse
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;; Avishai Yacobi suggested some menu rearrangements.
  27
  28 ;;; Code:
  29
  30 ;;; User options:
  31
  32 (defcustom buffers-menu-max-size 10
  33   "*Maximum number of entries which may appear on the Buffers menu.
  34 If this is 10, then only the ten most-recently-selected buffers are shown.
  35 If this is nil, then all buffers are shown.
  36 A large number or nil slows down menu responsiveness."
  37   :type '(choice integer
  38                  (const :tag "All" nil))
  39   :group 'mouse)
  40
  41 ;; Don't clobber an existing menu-bar keymap, to preserve any menu-bar key
  42 ;; definitions made in loaddefs.el.
  43 (or (lookup-key global-map [menu-bar])
  44     (define-key global-map [menu-bar] (make-sparse-keymap "menu-bar")))
  45 (defvar menu-bar-help-menu (make-sparse-keymap "Help"))
  46
  47 ;; Force Help item to come last, after the major mode's own items.
  48 ;; The symbol used to be called `help', but that gets confused with the
  49 ;; help key.
  50 (setq menu-bar-final-items '(help-menu))
  51
  52 (define-key global-map [menu-bar help-menu] (cons "Help" menu-bar-help-menu))
  53 (defvar menu-bar-tools-menu (make-sparse-keymap "Tools"))
  54 (define-key global-map [menu-bar tools] (cons "Tools" menu-bar-tools-menu))
  55 ;; This definition is just to show what this looks like.
  56 ;; It gets overridden below when menu-bar-update-buffers is called.
  57 (define-key global-map [menu-bar buffer]
  58   (cons "Buffers" (make-sparse-keymap "Buffers")))
  59 (defvar menu-bar-options-menu (make-sparse-keymap "Options"))
  60 (define-key global-map [menu-bar options]
  61   (cons "Options" menu-bar-options-menu))
  62 (defvar menu-bar-edit-menu (make-sparse-keymap "Edit"))
  63 (define-key global-map [menu-bar edit] (cons "Edit" menu-bar-edit-menu))
  64 (defvar menu-bar-files-menu (make-sparse-keymap "File"))
  65 (define-key global-map [menu-bar files] (cons "File" menu-bar-files-menu))
  66
  67 ;; This alias is for compatibility with 19.28 and before.
  68 (defvar menu-bar-file-menu menu-bar-files-menu)
  69 \f
  70 ;; The "File" menu items
  71 (define-key menu-bar-files-menu [exit-emacs]
  72   '(menu-item "Exit Emacs" save-buffers-kill-emacs
  73               :help "Save unsaved buffers, then exit"))
  74
  75 (define-key menu-bar-files-menu [separator-exit]
  76   '("--"))
  77
  78 ;; Don't use delete-frame as event name because that is a special
  79 ;; event.
  80 (define-key menu-bar-files-menu [delete-this-frame]
  81   '(menu-item "Delete Frame" delete-frame
  82               :visible (fboundp 'delete-frame)
  83               :enable (delete-frame-enabled-p)
  84               :help "Delete currently selected frame"))
  85 (define-key menu-bar-files-menu [make-frame-on-display]
  86   '(menu-item "New Frame on Display..." make-frame-on-display
  87               :visible (fboundp 'make-frame-on-display)
  88               :help "Open a new frame on another display"))
  89 (define-key menu-bar-files-menu [make-frame]
  90   '(menu-item "New Frame" make-frame-command
  91               :visible (fboundp 'make-frame-command)
  92               :help "Open a new frame"))
  93
  94 (define-key menu-bar-files-menu [one-window]
  95   '(menu-item "Unsplit Windows" delete-other-windows
  96               :enable (not (one-window-p t nil))
  97               :help "Make selected window fill its frame"))
  98
  99 (define-key menu-bar-files-menu [split-window]
 100   '(menu-item "Split Window" split-window-vertically
 101               :help "Split selected window in two"))
 102
 103 (define-key menu-bar-files-menu [separator-window]
 104   '(menu-item "--"))
 105
 106 (define-key menu-bar-files-menu [ps-print-region]
 107   '(menu-item "Postscript Print Region" ps-print-region-with-faces
 108               :enable mark-active
 109               :help "Pretty-print marked region to PostScript printer"))
 110 (define-key menu-bar-files-menu [ps-print-buffer]
 111   '(menu-item "Postscript Print Buffer" ps-print-buffer-with-faces
 112               :help "Pretty-print current buffer to PostScript printer"))
 113 (define-key menu-bar-files-menu [print-region]
 114   '(menu-item "Print Region" print-region
 115               :enable mark-active
 116               :help "Print region between mark and current position"))
 117 (define-key menu-bar-files-menu [print-buffer]
 118   '(menu-item "Print Buffer" print-buffer
 119               :help "Print current buffer with page headings"))
 120
 121 (define-key menu-bar-files-menu [separator-print]
 122   '(menu-item "--"))
 123
 124 (define-key menu-bar-files-menu [recover-session]
 125   '(menu-item "Recover Crashed Session..." recover-session
 126               :enable (and auto-save-list-file-prefix
 127                            (file-directory-p
 128                             (file-name-directory auto-save-list-file-prefix))
 129                            (directory-files
 130                             (file-name-directory auto-save-list-file-prefix)
 131                             nil
 132                             (concat "\\`"
 133                                     (regexp-quote
 134                                      (file-name-nondirectory
 135                                       auto-save-list-file-prefix)))
 136                             t))
 137               :help "Recover edits from a crashed session"))
 138 (define-key menu-bar-files-menu [revert-buffer]
 139   '(menu-item "Revert Buffer" revert-buffer
 140               :enable (or revert-buffer-function
 141                           revert-buffer-insert-file-contents-function
 142                           (and (buffer-file-name)
 143                                (or (buffer-modified-p)
 144                                    (not (verify-visited-file-modtime
 145                                          (current-buffer))))))
 146               :help "Re-read current buffer from its file"))
 147 (define-key menu-bar-files-menu [write-file]
 148   '(menu-item "Save Buffer As..." write-file
 149               :enable (not (window-minibuffer-p
 150                             (frame-selected-window menu-updating-frame)))
 151               :help "Write current buffer to another file"))
 152 (define-key menu-bar-files-menu [save-buffer]
 153   '(menu-item "Save (current buffer)" save-buffer
 154               :enable (and (buffer-modified-p)
 155                            (buffer-file-name)
 156                            (not (window-minibuffer-p
 157                                  (frame-selected-window menu-updating-frame))))
 158               :help "Save current buffer to its file"))
 159
 160 (define-key menu-bar-files-menu [separator-save]
 161   '(menu-item "--"))
 162
 163 (define-key menu-bar-files-menu [kill-buffer]
 164   '(menu-item "Close (current buffer)" kill-this-buffer
 165               :enable (kill-this-buffer-enabled-p)
 166               :help "Discard contents of current buffer"))
 167 (define-key menu-bar-files-menu [insert-file]
 168   '(menu-item "Insert File..." insert-file
 169               :enable (not (window-minibuffer-p
 170                             (frame-selected-window menu-updating-frame)))
 171               :help "Insert another file into current buffer"))
 172 (define-key menu-bar-files-menu [dired]
 173   '(menu-item "Open Directory..." dired
 174               :help "Read a directory, operate on its files"))
 175 (define-key menu-bar-files-menu [open-file]
 176   '(menu-item "Open File..." find-file
 177               :enable (not (window-minibuffer-p
 178                             (frame-selected-window menu-updating-frame)))
 179               :help "Read a file into an Emacs buffer"))
 180
 181 \f
 182 ;; The "Edit" menu items
 183 (defun nonincremental-search-forward (string)
 184   "Read a string and search for it nonincrementally."
 185   (interactive "sSearch for string: ")
 186   (if (equal string "")
 187       (search-forward (car search-ring))
 188     (isearch-update-ring string nil)
 189     (search-forward string)))
 190
 191 (defun nonincremental-search-backward (string)
 192   "Read a string and search backward for it nonincrementally."
 193   (interactive "sSearch for string: ")
 194   (if (equal string "")
 195       (search-backward (car search-ring))
 196     (isearch-update-ring string nil)
 197     (search-backward string)))
 198
 199 (defun nonincremental-re-search-forward (string)
 200   "Read a regular expression and search for it nonincrementally."
 201   (interactive "sSearch for regexp: ")
 202   (if (equal string "")
 203       (re-search-forward (car regexp-search-ring))
 204     (isearch-update-ring string t)
 205     (re-search-forward string)))
 206
 207 (defun nonincremental-re-search-backward (string)
 208   "Read a regular expression and search backward for it nonincrementally."
 209   (interactive "sSearch for regexp: ")
 210   (if (equal string "")
 211       (re-search-backward (car regexp-search-ring))
 212     (isearch-update-ring string t)
 213     (re-search-backward string)))
 214
 215 (defun nonincremental-repeat-search-forward ()
 216   "Search forward for the previous search string."
 217   (interactive)
 218   (if (null search-ring)
 219       (error "No previous search"))
 220   (search-forward (car search-ring)))
 221
 222 (defun nonincremental-repeat-search-backward ()
 223   "Search backward for the previous search string."
 224   (interactive)
 225   (if (null search-ring)
 226       (error "No previous search"))
 227   (search-backward (car search-ring)))
 228
 229 (defun nonincremental-repeat-re-search-forward ()
 230   "Search forward for the previous regular expression."
 231   (interactive)
 232   (if (null regexp-search-ring)
 233       (error "No previous search"))
 234   (re-search-forward (car regexp-search-ring)))
 235
 236 (defun nonincremental-repeat-re-search-backward ()
 237   "Search backward for the previous regular expression."
 238   (interactive)
 239   (if (null regexp-search-ring)
 240       (error "No previous search"))
 241   (re-search-backward (car regexp-search-ring)))
 242
 243 (defvar menu-bar-search-menu (make-sparse-keymap "Search"))
 244 (defvar menu-bar-adv-search-menu
 245   (make-sparse-keymap "Advanced Search/Replace"))
 246
 247 (define-key menu-bar-adv-search-menu [tags-continue]
 248   '(menu-item "Continue Tags Search/Replace" tags-loop-continue
 249               :help "Continue last tags search/replace operation"))
 250 (define-key menu-bar-adv-search-menu [tags-repl]
 251   '(menu-item "Replace in all tagged files" tags-query-replace
 252               :help "Interactively replace a regexp in all tagged files"))
 253 (define-key menu-bar-adv-search-menu [tags-srch]
 254   '(menu-item "Search in all tagged files" tags-search
 255               :help "Search for a regexp in all tagged files"))
 256
 257 (define-key menu-bar-adv-search-menu [separator-tag-search]
 258   '(menu-item "--"))
 259
 260 (define-key menu-bar-adv-search-menu [query-replace-regexp]
 261   '(menu-item "Replace Regexp..." query-replace-regexp
 262               :enable (not buffer-read-only)
 263               :help "Replace regular expression, ask about each occurrence"))
 264 (define-key menu-bar-adv-search-menu [repeat-regexp-back]
 265   '(menu-item "Repeat Regexp Backwards"
 266               nonincremental-repeat-re-search-backward
 267               :enable regexp-search-ring
 268               :help "Repeat last regular expression search backwards"))
 269 (define-key menu-bar-adv-search-menu [repeat-regexp-fwd]
 270   '(menu-item "Repeat Regexp" nonincremental-repeat-re-search-forward
 271               :enable regexp-search-ring
 272               :help "Repeat last regular expression search forward"))
 273 (define-key menu-bar-adv-search-menu [re-search-backward]
 274   '(menu-item "Search Regexp Backwards..." nonincremental-re-search-backward
 275               :help "Search backwards for a regular expression"))
 276 (define-key menu-bar-adv-search-menu [re-search-forward]
 277   '(menu-item "Search Regexp..." nonincremental-re-search-forward
 278               :help "Search forward for a regular expression"))
 279 (define-key menu-bar-search-menu [re-search]
 280   (list 'menu-item "Advanced Search/Replace" menu-bar-adv-search-menu
 281               :help "Regexp and Tags search and replace"))
 282
 283 (define-key menu-bar-search-menu [query-replace]
 284   '(menu-item "Replace..." query-replace
 285               :enable (not buffer-read-only)
 286               :help "Replace string interactively, ask about each occurrence"))
 287 (define-key menu-bar-search-menu [repeat-search-back]
 288   '(menu-item "Repeat Backwards" nonincremental-repeat-search-backward
 289               :enable search-ring
 290               :help "Repeat last search backwards"))
 291 (define-key menu-bar-search-menu [repeat-search-fwd]
 292   '(menu-item "Repeat Search" nonincremental-repeat-search-forward
 293               :enable search-ring
 294               :help "Repeat last search forward"))
 295 (define-key menu-bar-search-menu [search-backward]
 296   '(menu-item "Search Backwards..." nonincremental-search-backward
 297               :help "Search backwards for a string"))
 298 (define-key menu-bar-search-menu [search-forward]
 299   '(menu-item "Search..." nonincremental-search-forward
 300               :help "Search forward for a string"))
 301
 302 ;;; Assemble the top-level Edit menu items.
 303 (define-key menu-bar-edit-menu [props]
 304   '(menu-item "Text Properties" facemenu-menu
 305               :help "Change properties of text in region"))
 306
 307 (define-key menu-bar-search-menu [separator-search]
 308   '(menu-item "--"))
 309
 310 (define-key menu-bar-edit-menu [bookmark]
 311   '(menu-item "Bookmarks" menu-bar-bookmark-map
 312               :help "Record positions and jump between them"))
 313
 314 (define-key menu-bar-edit-menu [separator-bookmark]
 315   '(menu-item "--"))
 316
 317 (defvar menu-bar-goto-menu (make-sparse-keymap "Go To"))
 318
 319 (define-key menu-bar-goto-menu [set-tags-name]
 320   '(menu-item "Set Tags File Name" visit-tags-table
 321               :help "Tell Tags commands which tag table file to use"))
 322
 323 (define-key menu-bar-goto-menu [separator-tag-file]
 324   '(menu-item "--"))
 325
 326 (define-key menu-bar-goto-menu [apropos-tags]
 327   '(menu-item "Tags Apropos" tags-apropos
 328               :help "Find function/variables whose names match regexp"))
 329 (define-key menu-bar-goto-menu [next-tag-otherw]
 330   '(menu-item "Next Tag in Other Window"
 331               (function (lambda () (find-tag-other-window nil t)))
 332               :enable (and (boundp 'tags-location-ring)
 333                            (not (ring-empty-p tags-location-ring)))
 334               :help "Find next function/variable matching last tag name in another window"))
 335 (define-key menu-bar-goto-menu [next-tag]
 336   '(menu-item "Find Next Tag"
 337               (function (lambda () (find-tag nil t)))
 338               :enable (and (boundp 'tags-location-ring)
 339                            (not (ring-empty-p tags-location-ring)))
 340               :help "Find next function/variable matching last tag name"))
 341 (define-key menu-bar-goto-menu [find-tag-otherw]
 342   '(menu-item "Find Tag in Other Window..." find-tag-other-window
 343               :help "Find function/variable definition in another window"))
 344 (define-key menu-bar-goto-menu [find-tag]
 345   '(menu-item "Find Tag..." find-tag
 346               :help "Find definition of function or variable"))
 347
 348 (define-key menu-bar-goto-menu [separator-tags]
 349   '(menu-item "--"))
 350
 351 (define-key menu-bar-goto-menu [end-of-buf]
 352   '(menu-item "Goto End of Buffer" end-of-buffer))
 353 (define-key menu-bar-goto-menu [beg-of-buf]
 354   '(menu-item "Goto Beginning of Buffer" beginning-of-buffer))
 355 (define-key menu-bar-goto-menu [go-to-pos]
 356   '(menu-item "Goto Buffer Position..." goto-char
 357               :help "Read a number N and go to buffer position N"))
 358 (define-key menu-bar-goto-menu [go-to-line]
 359   '(menu-item "Goto Line..." goto-line
 360               :help "Read a line number and go to that line"))
 361
 362 (define-key menu-bar-edit-menu [goto]
 363   (list 'menu-item "Go To" menu-bar-goto-menu))
 364
 365 (define-key menu-bar-edit-menu [search]
 366   (list 'menu-item "Search" menu-bar-search-menu))
 367
 368 (define-key menu-bar-edit-menu [fill]
 369   '(menu-item "Fill" fill-region
 370               :enable (and mark-active (not buffer-read-only))
 371               :help
 372               "Fill text in region to fit between left and right margin"))
 373 (define-key menu-bar-edit-menu [mark-whole-buffer]
 374   '(menu-item "Select All" mark-whole-buffer
 375               :help "Mark the whole buffer for a subsequent cut/copy."))
 376 (define-key menu-bar-edit-menu [clear]
 377   '(menu-item "Clear" delete-region
 378               :enable (and mark-active
 379                            (not buffer-read-only)
 380                            (not (mouse-region-match)))
 381               :help
 382               "Delete the text in region between mark and current pos"))
 383 (defvar yank-menu (cons "Select Yank" nil))
 384 (fset 'yank-menu (cons 'keymap yank-menu))
 385 (define-key menu-bar-edit-menu [select-paste]
 386   '(menu-item "Select and Paste" yank-menu
 387               :enable (and (cdr yank-menu) (not buffer-read-only))
 388               :help "Paste text cut/copied earlier"))
 389 (define-key menu-bar-edit-menu [paste]
 390   '(menu-item "Paste" yank
 391               :enable (and (x-selection-exists-p) (not buffer-read-only))
 392               :help "Paste text most recently cut/copied"))
 393 (define-key menu-bar-edit-menu [copy]
 394   '(menu-item "Copy" menu-bar-kill-ring-save
 395               :enable mark-active
 396               :help "Copy text in region between mark and current pos"))
 397 (define-key menu-bar-edit-menu [cut]
 398   '(menu-item "Cut" kill-region
 399               :enable (and mark-active (not buffer-read-only))
 400               :help "Cut (kill) text in region between mark and current pos"))
 401 (define-key menu-bar-edit-menu [undo]
 402   '(menu-item "Undo" undo
 403               :enable (and (not buffer-read-only)
 404                            (not (eq t buffer-undo-list))
 405                            (if (eq last-command 'undo)
 406                                pending-undo-list
 407                              (consp buffer-undo-list)))
 408               :help "Undo last operation"))
 409
 410
 411 (defun menu-bar-kill-ring-save (beg end)
 412   (interactive "r")
 413   (if (mouse-region-match)
 414       (message "Selecting a region with the mouse does `copy' automatically")
 415     (kill-ring-save beg end)))
 416
 417 (autoload 'ispell-menu-map "ispell" nil t 'keymap)
 418
 419 ;; These are alternative definitions for the cut, paste and copy
 420 ;; menu items.  Use them if your system expects these to use the clipboard.
 421
 422 (put 'clipboard-kill-region 'menu-enable 'mark-active)
 423 (put 'clipboard-kill-ring-save 'menu-enable 'mark-active)
 424 (put 'clipboard-yank 'menu-enable
 425      '(or (x-selection-exists-p) (x-selection-exists-p 'CLIPBOARD)))
 426
 427 (defun clipboard-yank ()
 428   "Insert the clipboard contents, or the last stretch of killed text."
 429   (interactive)
 430   (let ((x-select-enable-clipboard t))
 431     (yank)))
 432
 433 (defun clipboard-kill-ring-save (beg end)
 434   "Copy region to kill ring, and save in the X clipboard."
 435   (interactive "r")
 436   (let ((x-select-enable-clipboard t))
 437     (kill-ring-save beg end)))
 438
 439 (defun clipboard-kill-region (beg end)
 440   "Kill the region, and save it in the X clipboard."
 441   (interactive "r")
 442   (let ((x-select-enable-clipboard t))
 443     (kill-region beg end)))
 444
 445 (defun menu-bar-enable-clipboard ()
 446   "Make CUT, PASTE and COPY (keys and menu bar items) use the clipboard.
 447 Do the same for the keys of the same name."
 448   (interactive)
 449   ;; We can't use constant list structure here because it becomes pure,
 450   ;; and because it gets modified with cache data.
 451   (define-key menu-bar-edit-menu [paste]
 452     (cons "Paste" (cons "Paste text from clipboard" 'clipboard-yank)))
 453   (define-key menu-bar-edit-menu [copy]
 454     (cons "Copy" (cons "Copy text in region to the clipboard"
 455                        'clipboard-kill-ring-save)))
 456   (define-key menu-bar-edit-menu [cut]
 457     (cons "Cut" (cons "Delete text in region and copy it to the clipboard"
 458                       'clipboard-kill-region)))
 459
 460   (define-key global-map [f20] 'clipboard-kill-region)
 461   (define-key global-map [f16] 'clipboard-kill-ring-save)
 462   (define-key global-map [f18] 'clipboard-yank)
 463   ;; X11R6 versions
 464   (define-key global-map [cut] 'clipboard-kill-region)
 465   (define-key global-map [copy] 'clipboard-kill-ring-save)
 466   (define-key global-map [paste] 'clipboard-yank))
 467 \f
 468 ;; The "Options" menu items
 469
 470 (defvar menu-bar-custom-menu (make-sparse-keymap "Customize"))
 471
 472 (define-key menu-bar-custom-menu [customize-apropos-groups]
 473   '(menu-item "Groups Matching Regexp..." customize-apropos-groups
 474               :help "Browse groups whose names match regexp"))
 475 (define-key menu-bar-custom-menu [customize-apropos-faces]
 476   '(menu-item "Faces Matching Regexp..." customize-apropos-faces
 477               :help "Browse faces whose names match regexp"))
 478 (define-key menu-bar-custom-menu [customize-apropos-options]
 479   '(menu-item "Options Matching Regexp..." customize-apropos-options
 480               :help "Browse options whose names match regexp"))
 481 (define-key menu-bar-custom-menu [customize-apropos]
 482   '(menu-item "Settings Matching Regexp..." customize-apropos
 483               :help "Browse customizable settings whose names match regexp"))
 484 (define-key menu-bar-custom-menu [separator-2]
 485   '("--"))
 486 (define-key menu-bar-custom-menu [customize-group]
 487   '(menu-item "Specific Group..." customize-group
 488               :help "Customize settings of specific group"))
 489 (define-key menu-bar-custom-menu [customize-face]
 490   '(menu-item "Specific Face..." customize-face
 491               :help "Customize attributes of specific face"))
 492 (define-key menu-bar-custom-menu [customize-option]
 493   '(menu-item "Specific Option..." customize-option
 494               :help "Change value of specific option"))
 495 (define-key menu-bar-custom-menu [customize-changed-options]
 496   '(menu-item "Recently Changed Options..." customize-changed-options
 497               :help "Customize options changed in recent versions"))
 498 (define-key menu-bar-custom-menu [separator-3]
 499   '("--"))
 500 (define-key menu-bar-custom-menu [customize-browse]
 501   '(menu-item "Browse Customization Groups" customize-browse
 502               :help "Browse all customization groups"))
 503 (define-key menu-bar-custom-menu [customize]
 504   '(menu-item "Top-level Customization Group" customize
 505               :help "The master group called `Emacs'"))
 506
 507 ;(defvar menu-bar-preferences-menu (make-sparse-keymap "Preferences"))
 508
 509 (defmacro menu-bar-make-toggle (name variable doc message help &rest body)
 510   `(progn
 511      (defun ,name ()
 512        ,(concat doc ".")
 513        (interactive)
 514        (if ,(if body `(progn . ,body)
 515               `(setq ,variable (not ,variable)))
 516            (message ,message "enabled")
 517          (message ,message "disabled")))
 518      '(menu-item ,doc ,name
 519                  :help ,help
 520                  :button (:toggle . (and (boundp ',variable) ,variable)))))
 521
 522 ;;; Assemble all the top-level items of the "Options" menu
 523 (define-key menu-bar-options-menu [customize]
 524   (list 'menu-item "Customize Emacs" menu-bar-custom-menu
 525         :help "Full customization of every Emacs feature"))
 526
 527 (defun menu-bar-options-save ()
 528   "Save current values of Options menu items using Custom."
 529   (interactive)
 530   (dolist (elt '(debug-on-quit debug-on-error auto-compression-mode
 531                  case-fold-search truncate-lines show-paren-mode
 532                  transient-mark-mode global-font-lock-mode
 533                  current-language-environment default-input-method))
 534     (if (default-value elt)
 535         (customize-save-variable elt (default-value elt))))
 536   (if (memq 'turn-on-auto-fill text-mode-hook)
 537       (customize-save-variable 'text-mode-hook
 538                                (default-value 'text-mode-hook)))
 539   (if (featurep 'saveplace)
 540       (customize-save-variable 'save-place (default-value 'save-place)))
 541   (if (featurep 'uniquify)
 542       (customize-save-variable 'uniquify-buffer-name-style
 543                                (default-value 'uniquify-buffer-name-style))))
 544
 545 (define-key menu-bar-options-menu [save]
 546   '(menu-item "Save Options" menu-bar-options-save
 547               :help "Save options set from the menu above"))
 548
 549 (define-key menu-bar-options-menu [custom-separator]
 550   '("--"))
 551
 552 (define-key menu-bar-options-menu [mule]
 553   ;; It is better not to use backquote here,
 554   ;; because that makes a bootstrapping problem
 555   ;; if you need to recompile all the Lisp files using interpreted code.
 556   (list 'menu-item "Mule (Multilingual Environment)" mule-menu-keymap
 557 ;; Most of the MULE menu actually does make sense in unibyte mode,
 558 ;; e.g. language selection.
 559 ;;;     ':visible 'default-enable-multibyte-characters
 560         ':help "Default language, encodings, input method"))
 561 ;(setq menu-bar-final-items (cons 'mule menu-bar-final-items))
 562 ;(define-key menu-bar-options-menu [preferences]
 563 ;  (list 'menu-item "Preferences" menu-bar-preferences-menu
 564 ;       :help "Toggle important global options"))
 565
 566 (define-key menu-bar-options-menu [mule-separator]
 567   '("--"))
 568
 569 (define-key menu-bar-options-menu [debug-on-quit]
 570   (menu-bar-make-toggle toggle-debug-on-quit debug-on-quit
 571                         "Enter Debugger on Quit/C-g" "Debug on Quit %s"
 572                         "Enter Lisp debugger when C-g is pressed"))
 573 (define-key menu-bar-options-menu [debug-on-error]
 574   (menu-bar-make-toggle toggle-debug-on-error debug-on-error
 575                         "Enter Debugger on Error" "Debug on Error %s"
 576                         "Enter Lisp debugger when error is signaled"))
 577 (define-key menu-bar-options-menu [debugger-separator]
 578   '("--"))
 579 (define-key menu-bar-options-menu [toggle-auto-compression]
 580   '(menu-item "Automatic File De/compression"
 581              auto-compression-mode
 582              :help "Transparently decompress compressed files"
 583              :button (:toggle . (rassq 'jka-compr-handler
 584                                        file-name-handler-alist))))
 585 (define-key menu-bar-options-menu [save-place]
 586   (menu-bar-make-toggle toggle-save-place-globally save-place
 587                         "Save Place in Files between Sessions"
 588                         "Saving place in files %s"
 589                         "Save Emacs state for next session"
 590                         (require 'saveplace)
 591                         (setq-default save-place
 592                                       (not (default-value save-place)))))
 593 (define-key menu-bar-options-menu [uniquify]
 594   (menu-bar-make-toggle toggle-uniquify-buffer-names uniquify-buffer-name-style
 595                         "Use Directory Names in Buffer Names"
 596                         "Directory name in buffer names (uniquify) %s"
 597                         nil
 598                         (require 'uniquify)
 599                         (setq uniquify-buffer-name-style
 600                               (if (not uniquify-buffer-name-style)
 601                                   'forward))))
 602 (define-key menu-bar-options-menu [edit-options-separator]
 603   '("--"))
 604 (define-key menu-bar-options-menu [case-fold-search]
 605   (menu-bar-make-toggle toggle-case-fold-search case-fold-search
 606                         "Case-Insensitive Search"
 607                         "Case-Insensitive Search %s"
 608                         "If checked, search ignores letter-case"))
 609 (define-key menu-bar-options-menu [auto-fill-mode]
 610   '(menu-item "Word Wrap in Text Modes (Auto Fill)"
 611               toggle-text-mode-auto-fill
 612               :help "Automatically fill text between left and right margins"
 613               :button (:toggle . (member 'turn-on-auto-fill text-mode-hook))))
 614 (define-key menu-bar-options-menu [truncate-lines]
 615   (menu-bar-make-toggle
 616    toggle-truncate-lines truncate-lines
 617    "Truncate Long Lines in this Buffer" "Long Line Truncation %s"
 618    "If checked, long lines are truncated on the screen"
 619    (prog1 (setq truncate-lines (not truncate-lines))
 620      (set-buffer-modified-p (buffer-modified-p)))))
 621 (define-key menu-bar-options-menu [highlight-separator]
 622   '("--"))
 623 (define-key menu-bar-options-menu [highlight-paren-mode]
 624   (menu-bar-make-toggle toggle-highlight-paren-mode show-paren-mode
 625                         "Highlight Matching Parentheses"
 626                         "Show Paren mode %s"
 627                         "Highlight matching and mismatched parentheses"))
 628 (define-key menu-bar-options-menu [transient-mark-mode]
 629   (menu-bar-make-toggle toggle-transient-mark-mode transient-mark-mode
 630                         "Transient Mark Mode (highlights region)"
 631                         "Transient Mark mode %s"
 632                         "Highlight the marked region when it's active"))
 633 (define-key menu-bar-options-menu [toggle-global-lazy-font-lock-mode]
 634   (menu-bar-make-toggle toggle-global-lazy-font-lock-mode global-font-lock-mode
 635                         "Highlight Syntax (Global Font Lock)"
 636                         "Syntax Highlighting %s"
 637                         "Highlights text based on language syntax"
 638                         (global-font-lock-mode)))
 639
 640 \f
 641 ;; The "Tools" menu items
 642
 643 (defun send-mail-item-name ()
 644   (let* ((known-send-mail-commands '((sendmail-user-agent . "sendmail")
 645                                      (mh-e-user-agent . "MH")
 646                                      (message-user-agent . "Gnus Message")
 647                                      (gnus-user-agent . "Gnus")))
 648          (name (assq mail-user-agent known-send-mail-commands)))
 649     (if name
 650         (setq name (cdr name))
 651       (setq name (symbol-name mail-user-agent))
 652       (if (string-match "\\(.+\\)-user-agent" name)
 653           (setq name (match-string 1 name))))
 654     name))
 655
 656 (defun read-mail-item-name ()
 657   (let* ((known-rmail-commands '((rmail . "RMAIL")
 658                                  (mh-rmail . "MH")
 659                                  (gnus . "Gnus")))
 660          (known (assq read-mail-command known-rmail-commands)))
 661     (if known (cdr known) (symbol-name read-mail-command))))
 662
 663 (defvar menu-bar-games-menu (make-sparse-keymap "Games"))
 664
 665 (define-key menu-bar-tools-menu [games]
 666   (list 'menu-item "Games" menu-bar-games-menu))
 667
 668 (define-key menu-bar-tools-menu [separator-games]
 669   '("--"))
 670
 671 (define-key menu-bar-games-menu [zone]
 672   '(menu-item "Zone Out"  zone
 673               :help "Play tricks with Emacs display when Emacs is idle"))
 674 (define-key menu-bar-games-menu [yow]
 675   '(menu-item "Random Quotation"  yow
 676               :help "Display a random Zippy quotation"))
 677 (define-key menu-bar-games-menu [tetris]
 678   '(menu-item "Tetris"  tetris))
 679 (define-key menu-bar-games-menu [solitaire]
 680   '(menu-item "Solitaire"  solitaire))
 681 (define-key menu-bar-games-menu [snake]
 682   '(menu-item "Snake"  snake
 683               :help "Move snake around avoiding collisions"))
 684 (define-key menu-bar-games-menu [mult]
 685   '(menu-item "Multiplication Puzzle"  mpuz
 686               :help "Excercise brain with multiplication"))
 687 (define-key menu-bar-games-menu [life]
 688   '(menu-item "Life"  life
 689               :help "Watch how John Conway's cellular automaton evolves"))
 690 (define-key menu-bar-games-menu [hanoi]
 691   '(menu-item "Towers of Hanoi" hanoi
 692               :help "Watch Towers-of-Hanoi puzzle solved by Emacs"))
 693 (define-key menu-bar-games-menu [gomoku]
 694   '(menu-item "Gomoku"  gomoku
 695               :help "Mark 5 contiguous squares (like tic-tac-toe)"))
 696 (define-key menu-bar-games-menu [black-box]
 697   '(menu-item "Blackbox"  blackbox
 698               :help "Find balls in a black box by shooting rays"))
 699 (define-key menu-bar-games-menu [adventure]
 700   '(menu-item "Adventure"  dunnet
 701               :help "Dunnet, a text Adventure game for Emacs"))
 702 (define-key menu-bar-games-menu [5x5]
 703   '(menu-item "5x5" 5x5
 704               :help "Fill in all the squares on a 5x5 board"))
 705
 706 (define-key menu-bar-tools-menu [calendar]
 707   '(menu-item "Display Calendar" calendar))
 708 (define-key menu-bar-tools-menu [speedbar]
 709   '(menu-item "Display Speedbar" speedbar-frame-mode))
 710 (define-key menu-bar-tools-menu [directory-search]
 711   '(menu-item "Directory Search" eudc-tools-menu
 712               :help "Query directory servers via LDAP, CCSO PH/QI or BBDB"))
 713 (define-key menu-bar-tools-menu [compose-mail]
 714   (list
 715    'menu-item `(format "Send Mail (with %s)" (send-mail-item-name))
 716    'compose-mail
 717    :visible `(and mail-user-agent (not (eq mail-user-agent 'ignore)))
 718    :help "Send a mail message"))
 719 (define-key menu-bar-tools-menu [rmail]
 720   (list
 721    'menu-item `(format "Read Mail (with %s)" (read-mail-item-name))
 722    (lambda ()
 723      (interactive)
 724      (call-interactively read-mail-command))
 725    :visible `(and read-mail-command (not (eq read-mail-command 'ignore)))
 726    :help "Read your mail and reply to it"))
 727 (define-key menu-bar-tools-menu [gnus]
 728   '(menu-item "Read Net News (Gnus)" gnus
 729               :help "Read network news groups"))
 730
 731 (define-key menu-bar-tools-menu [separator-vc]
 732   '("--"))
 733
 734 (defvar vc-menu-map (make-sparse-keymap "Version Control"))
 735 (define-key menu-bar-tools-menu [pcl-cvs]
 736   `(menu-item "PCL-CVS" ,cvs-global-menu
 737               :help "Module-level interface to CVS"))
 738 (define-key menu-bar-tools-menu [vc]
 739   (list 'menu-item "Version Control" vc-menu-map
 740         :help "Interface to RCS, CVS, SCCS"))
 741
 742 (define-key menu-bar-tools-menu [separator-compare]
 743   '("--"))
 744
 745 (define-key menu-bar-tools-menu [ediff-misc]
 746   '(menu-item "Ediff Miscellanea" menu-bar-ediff-misc-menu
 747               :help "Ediff manual, customization, sessions, etc."))
 748 (define-key menu-bar-tools-menu [epatch]
 749   '(menu-item "Apply Patch" menu-bar-epatch-menu))
 750 (define-key menu-bar-tools-menu [ediff-merge]
 751   '(menu-item "Merge" menu-bar-ediff-merge-menu
 752               :help "Merge different revisions of files/directories"))
 753 (define-key menu-bar-tools-menu [compare]
 754   '(menu-item "Compare (Ediff)" menu-bar-ediff-menu
 755               :help "Display differences between files/directories"))
 756
 757
 758 (define-key menu-bar-tools-menu [separator-spell]
 759   '("--"))
 760
 761 (define-key menu-bar-tools-menu [spell]
 762   '(menu-item "Spell Checking" ispell-menu-map))
 763
 764 (define-key menu-bar-tools-menu [separator-prog]
 765   '("--"))
 766
 767 (define-key menu-bar-tools-menu [gdb]
 768   '(menu-item "Debugger (GUD)..." gdb
 769               :help "Debug a program from within Emacs"))
 770 (define-key menu-bar-tools-menu [shell-on-region]
 771   '(menu-item "Shell Command on Region..." shell-command-on-region
 772               :enable mark-active
 773               :help "Pass marked region to a shell command"))
 774 (define-key menu-bar-tools-menu [shell]
 775   '(menu-item "Shell Command..." shell-command
 776               :help "Invoke a shell command and catch its output"))
 777 (define-key menu-bar-tools-menu [compile]
 778   '(menu-item "Compile..." compile
 779               :help "Invoke compiler or Make, view compilation errors"))
 780 (define-key menu-bar-tools-menu [grep]
 781   '(menu-item "Search Files (Grep)..." grep
 782               :help "Search files for strings or regexps (with Grep)"))
 783
 784 \f
 785 ;; The "Help" menu items
 786
 787 (defvar menu-bar-describe-menu (make-sparse-keymap "Describe"))
 788
 789 (define-key menu-bar-describe-menu [mule-diag]
 790   '(menu-item "Show All of Mule Status" mule-diag
 791               :visible default-enable-multibyte-characters
 792               :help "Display multilingual environment settings"))
 793 (define-key menu-bar-describe-menu [describe-coding-system]
 794   '(menu-item "Describe Coding System..." describe-coding-system
 795               :visible default-enable-multibyte-characters))
 796 (define-key menu-bar-describe-menu [describe-input-method]
 797   '(menu-item "Describe Input Method..." describe-input-method
 798               :visible default-enable-multibyte-characters
 799               :help "Keyboard layout for specific input method"))
 800 (define-key menu-bar-describe-menu [describe-language-environment]
 801   (list 'menu-item "Describe Language Environment"
 802         describe-language-environment-map
 803         :help "Show multilingual settings for a specific language"))
 804
 805 (define-key menu-bar-describe-menu [separator-desc-mule]
 806   '("--"))
 807
 808 (define-key menu-bar-describe-menu [list-keybindings]
 809   '(menu-item "List Key Bindings" describe-bindings
 810               :help "Display a list of all current keybindings"))
 811 (define-key menu-bar-describe-menu [list-keybindings]
 812   '(menu-item "List Key Bindings" describe-bindings
 813               :help "Display a list of all current keybindings"))
 814 (define-key menu-bar-describe-menu [describe-variable]
 815   '(menu-item "Describe Variable..." describe-variable
 816               :help "Display documentation of variable/option"))
 817 (define-key menu-bar-describe-menu [describe-function]
 818   '(menu-item "Describe Function..." describe-function
 819               :help "Display documentation of function/command"))
 820 (define-key menu-bar-describe-menu [describe-key]
 821   '(menu-item "Describe Key..." describe-key
 822               ;; Users typically don't identify keys and menu items...
 823               :help "Display documentation of command bound to a \
 824 key (or menu-item)"))
 825 (define-key menu-bar-describe-menu [apropos-variables]
 826   '(menu-item "Apropos Variables..." apropos-variable
 827               :help "List variables whose names match a regexp"))
 828 (define-key menu-bar-describe-menu [apropos-commands]
 829   '(menu-item "Apropos Commands..." apropos-command
 830               :help "List commands whose names match a regexp"))
 831 (define-key menu-bar-describe-menu [describe-mode]
 832   '(menu-item "Describe Buffer Modes" describe-mode
 833               :help "Describe this buffer's major and minor mode"))
 834
 835 (defvar menu-bar-manuals-menu (make-sparse-keymap "Manuals"))
 836
 837 (define-key menu-bar-manuals-menu [man]
 838   '(menu-item "Read Man Page..." manual-entry
 839               :help "Man-page docs for external commands and libraries"))
 840 (define-key menu-bar-manuals-menu [sep2]
 841   '("--"))
 842 (define-key menu-bar-manuals-menu [info]
 843   '(menu-item "Browse Manuals with Info" Info-directory
 844               :help "Read any of the installed manuals"))
 845 (define-key menu-bar-manuals-menu [command]
 846   '(menu-item "Find Command in Manual" Info-goto-emacs-command-node
 847               :help "Display manual section that describes a command"))
 848 (define-key menu-bar-manuals-menu [key]
 849   '(menu-item "Find Key in Manual" Info-goto-emacs-key-command-node
 850               :help "Display manual section that describes a key"))
 851
 852 (define-key menu-bar-help-menu [eliza]
 853   '(menu-item "Emacs Psychiatrist" doctor
 854               :help "Our doctor will help you feel better"))
 855 (define-key menu-bar-help-menu [sep3]
 856   '("--"))
 857 (define-key menu-bar-help-menu [describe-no-warranty]
 858   '(menu-item "(Non)Warranty" describe-no-warranty
 859               :help "Explain that Emacs has NO WARRANTY"))
 860 (define-key menu-bar-help-menu [describe-copying]
 861   '(menu-item "Copying Conditions" describe-copying
 862               :help "Show the Emacs license (GPL)"))
 863 (define-key menu-bar-help-menu [describe-distribution]
 864   '(menu-item "Getting New Versions" describe-distribution
 865               :help "How to get latest versions of Emacs"))
 866 (define-key menu-bar-help-menu [emacs-version]
 867   '(menu-item "Show Emacs Version" emacs-version))
 868 (define-key menu-bar-help-menu [sep2]
 869   '("--"))
 870 (define-key menu-bar-help-menu [finder-by-keyword]
 871   '(menu-item "Find Emacs Packages..." finder-by-keyword
 872               :help "Find packages and features by keyword"))
 873 (define-key menu-bar-help-menu [describe]
 874   (list 'menu-item "Describe" menu-bar-describe-menu
 875         :help "Describe commands, variables, keys"))
 876 (define-key menu-bar-help-menu [manuals]
 877   (list 'menu-item "Manuals" menu-bar-manuals-menu
 878         :help "Lookup commands and keys in docs, read manuals"))
 879 (define-key menu-bar-help-menu [sep1]
 880   '("--"))
 881 (define-key menu-bar-help-menu [report-emacs-bug]
 882   '(menu-item "Send Bug Report..." report-emacs-bug
 883               :help "Send e-mail to Emacs maintainers"))
 884 (define-key menu-bar-help-menu [emacs-manual]
 885   '(menu-item "Read the Emacs Manual"
 886               (lambda () (interactive) (info "emacs"))))
 887 (define-key menu-bar-help-menu [emacs-problems]
 888   '(menu-item "Emacs Known Problems" view-emacs-problems))
 889 (define-key menu-bar-help-menu [emacs-news]
 890   '(menu-item "Emacs News" view-emacs-news
 891               :help "New features of this version"))
 892 (define-key menu-bar-help-menu [emacs-faq]
 893   '(menu-item "Emacs FAQ" view-emacs-FAQ))
 894 (define-key menu-bar-help-menu [emacs-tutorial-language-specific]
 895   '(menu-item "Emacs Tutorial (choose language)..."
 896               (lambda () (interactive) (help-with-tutorial t))
 897               :help "Learn how to use Emacs (choose a language)"))
 898 (define-key menu-bar-help-menu [emacs-tutorial]
 899   '(menu-item "Emacs Tutorial" help-with-tutorial
 900               :help "Learn how to use Emacs"))
 901
 902 (defun kill-this-buffer ()      ; for the menubar
 903   "Kill the current buffer."
 904   (interactive)
 905   (kill-buffer (current-buffer)))
 906
 907 (defun kill-this-buffer-enabled-p ()
 908   (let ((count 0)
 909         (buffers (buffer-list)))
 910     (while buffers
 911       (or (string-match "^ " (buffer-name (car buffers)))
 912           (setq count (1+ count)))
 913       (setq buffers (cdr buffers)))
 914     (and (not (window-minibuffer-p (frame-selected-window menu-updating-frame)))
 915          (> count 1))))
 916
 917 (put 'dired 'menu-enable
 918      '(not (window-minibuffer-p (frame-selected-window menu-updating-frame))))
 919
 920 ;; Permit deleting frame if it would leave a visible or iconified frame.
 921 (defun delete-frame-enabled-p ()
 922   "Return non-nil if `delete-frame' should be enabled in the menu bar."
 923   (let ((frames (frame-list))
 924         (count 0))
 925     (while frames
 926       (if (frame-visible-p (car frames))
 927           (setq count (1+ count)))
 928       (setq frames (cdr frames)))
 929     (> count 1)))
 930
 931 (defcustom yank-menu-length 20
 932   "*Maximum length to display in the yank-menu."
 933   :type 'integer
 934   :group 'mouse)
 935
 936 (defun menu-bar-update-yank-menu (string old)
 937   (let ((front (car (cdr yank-menu)))
 938         (menu-string (if (<= (length string) yank-menu-length)
 939                          string
 940                        (concat
 941                         (substring string 0 (/ yank-menu-length 2))
 942                         "..."
 943                         (substring string (- (/ yank-menu-length 2)))))))
 944     ;; Don't let the menu string be all dashes
 945     ;; because that has a special meaning in a menu.
 946     (if (string-match "\\`-+\\'" menu-string)
 947         (setq menu-string (concat menu-string " ")))
 948     ;; If we're supposed to be extending an existing string, and that
 949     ;; string really is at the front of the menu, then update it in place.
 950     (if (and old (or (eq old (car front))
 951                      (string= old (car front))))
 952         (progn
 953           (setcar front string)
 954           (setcar (cdr front) menu-string))
 955       (setcdr yank-menu
 956               (cons
 957                (cons string (cons menu-string 'menu-bar-select-yank))
 958                (cdr yank-menu)))))
 959   (if (> (length (cdr yank-menu)) kill-ring-max)
 960       (setcdr (nthcdr kill-ring-max yank-menu) nil)))
 961
 962 (put 'menu-bar-select-yank 'apropos-inhibit t)
 963 (defun menu-bar-select-yank ()
 964   (interactive "*")
 965   (push-mark (point))
 966   (insert last-command-event))
 967 \f
 968 (defvar list-buffers-directory nil)
 969
 970 (defvar menu-bar-update-buffers-maxbuf)
 971
 972 (defun menu-bar-select-buffer ()
 973   (interactive)
 974   (switch-to-buffer last-command-event))
 975
 976 (defun menu-bar-select-frame ()
 977   (interactive)
 978   (make-frame-visible last-command-event)
 979   (raise-frame last-command-event)
 980   (select-frame last-command-event))
 981
 982 (defun menu-bar-update-buffers-1 (elt)
 983   (cons (format
 984          (format "%%%ds  %%s%%s  %%s" menu-bar-update-buffers-maxbuf)
 985          (cdr elt)
 986          (if (buffer-modified-p (car elt))
 987              "*" " ")
 988          (save-excursion
 989            (set-buffer (car elt))
 990            (if buffer-read-only "%" " "))
 991          (let ((file
 992                 (or (buffer-file-name (car elt))
 993                     (save-excursion
 994                       (set-buffer (car elt))
 995                       list-buffers-directory)
 996                     "")))
 997            (setq file (or (file-name-directory file)
 998                           ""))
 999            (if (> (length file) 20)
1000                (setq file (concat "..." (substring file -17))))
1001            file))
1002         (car elt)))
1003
1004 (defvar menu-bar-buffers-menu-list-buffers-entry nil)
1005
1006 (defun menu-bar-update-buffers ()
1007   ;; If user discards the Buffers item, play along.
1008   (and (lookup-key (current-global-map) [menu-bar buffer])
1009        (frame-or-buffer-changed-p)
1010        (let ((buffers (buffer-list))
1011              (frames (frame-list))
1012              (maxlen 0)
1013              buffers-menu frames-menu)
1014          ;; If requested, list only the N most recently selected buffers.
1015          (if (and (integerp buffers-menu-max-size)
1016                   (> buffers-menu-max-size 1))
1017              (if (> (length buffers) buffers-menu-max-size)
1018                  (setcdr (nthcdr buffers-menu-max-size buffers) nil)))
1019
1020          ;; Make the menu of buffers proper.
1021          (setq buffers-menu
1022                (cons "Select Buffer"
1023                      (let* ((buffer-list
1024                              (mapcar 'list buffers))
1025                             tail
1026                             (menu-bar-update-buffers-maxbuf 0)
1027                             alist
1028                             head)
1029                        ;; Put into each element of buffer-list
1030                        ;; the name for actual display,
1031                        ;; perhaps truncated in the middle.
1032                        (setq tail buffer-list)
1033                        (while tail
1034                          (let ((name (buffer-name (car (car tail)))))
1035                            (setcdr (car tail)
1036                                    (if (> (length name) 27)
1037                                        (concat (substring name 0 12)
1038                                                "..."
1039                                                (substring name -12))
1040                                      name)))
1041                          (setq tail (cdr tail)))
1042                        ;; Compute the maximum length of any name.
1043                        (setq tail buffer-list)
1044                        (while tail
1045                          (or (eq ?\ (aref (cdr (car tail)) 0))
1046                              (setq menu-bar-update-buffers-maxbuf
1047                                    (max menu-bar-update-buffers-maxbuf
1048                                         (length (cdr (car tail))))))
1049                          (setq tail (cdr tail)))
1050                        ;; Set ALIST to an alist of the form
1051                        ;; ITEM-STRING . BUFFER
1052                        (setq tail buffer-list)
1053                        (while tail
1054                          (let ((elt (car tail)))
1055                            (or (eq ?\ (aref (cdr elt) 0))
1056                                (setq alist (cons
1057                                             (menu-bar-update-buffers-1 elt)
1058                                             alist)))
1059                            (and alist (> (length (car (car alist))) maxlen)
1060                                 (setq maxlen (length (car (car alist))))))
1061                          (setq tail (cdr tail)))
1062                        (setq alist (nreverse alist))
1063                        ;; Make the menu item for list-buffers
1064                        ;; or reuse the one we already have.
1065                        ;; The advantage in reusing one
1066                        ;; is that it already has the keyboard equivalent
1067                        ;; cached, so we save the time to look that up again.
1068                        (or menu-bar-buffers-menu-list-buffers-entry
1069                            (setq menu-bar-buffers-menu-list-buffers-entry
1070                                  (cons
1071                                   'list-buffers
1072                                   (cons
1073                                    ""
1074                                    'list-buffers))))
1075                        ;; Update the item string for menu's new width.
1076                        (setcar (cdr menu-bar-buffers-menu-list-buffers-entry)
1077                                (concat (make-string (max (- (/ maxlen 2) 8) 0)
1078                                                     ?\ )
1079                                        "List All Buffers"))
1080                        ;; Now make the actual list of items,
1081                        ;; ending with the list-buffers item.
1082                        (nconc (mapcar (lambda (pair)
1083                                         ;; This is somewhat risque, to use
1084                                         ;; the buffer name itself as the event
1085                                         ;; type to define, but it works.
1086                                         ;; It would not work to use the buffer
1087                                         ;; since a buffer as an event has its
1088                                         ;; own meaning.
1089                                         (nconc (list (buffer-name (cdr pair))
1090                                                      (car pair)
1091                                                      (cons nil nil))
1092                                                'menu-bar-select-buffer))
1093                                       alist)
1094                               (list menu-bar-buffers-menu-list-buffers-entry)))))
1095
1096
1097          ;; Make a Frames menu if we have more than one frame.
1098          (if (cdr frames)
1099              (let ((name (concat (make-string (max (- (/ maxlen 2) 3) 0)
1100                                               ?\ )
1101                                  "Frames"))
1102                    (frames-menu
1103                     (cons 'keymap
1104                           (cons "Select Frame"
1105                                 (mapcar
1106                                  (lambda (frame)
1107                                    (nconc
1108                                     (list frame
1109                                           (frame-parameter frame 'name)
1110                                           (cons nil nil))
1111                                           'menu-bar-select-frame))
1112                                         frames)))))
1113                ;; Put it underneath the Buffers menu.
1114                (setq buffers-menu (cons (cons 'frames (cons name frames-menu))
1115                                         buffers-menu))))
1116          (if buffers-menu
1117              (setq buffers-menu (cons 'keymap buffers-menu)))
1118          (define-key (current-global-map) [menu-bar buffer]
1119            (cons "Buffers" buffers-menu)))))
1120
1121 (add-hook 'menu-bar-update-hook 'menu-bar-update-buffers)
1122
1123 (menu-bar-update-buffers)
1124
1125 ;; this version is too slow
1126 ;;;(defun format-buffers-menu-line (buffer)
1127 ;;;  "Returns a string to represent the given buffer in the Buffer menu.
1128 ;;;nil means the buffer shouldn't be listed.  You can redefine this."
1129 ;;;  (if (string-match "\\` " (buffer-name buffer))
1130 ;;;      nil
1131 ;;;    (save-excursion
1132 ;;;     (set-buffer buffer)
1133 ;;;     (let ((size (buffer-size)))
1134 ;;;       (format "%s%s %-19s %6s %-15s %s"
1135 ;;;            (if (buffer-modified-p) "*" " ")
1136 ;;;            (if buffer-read-only "%" " ")
1137 ;;;            (buffer-name)
1138 ;;;            size
1139 ;;;            mode-name
1140 ;;;            (or (buffer-file-name) ""))))))
1141 \f
1142 ;;; Set up a menu bar menu for the minibuffer.
1143
1144 (mapcar
1145  (function
1146   (lambda (map)
1147     (define-key map [menu-bar minibuf]
1148       (cons "Minibuf" (make-sparse-keymap "Minibuf")))))
1149  (list minibuffer-local-ns-map
1150        minibuffer-local-must-match-map
1151        minibuffer-local-isearch-map
1152        minibuffer-local-map
1153        minibuffer-local-completion-map))
1154
1155 (mapcar
1156  (function
1157   (lambda (map)
1158     (define-key map [menu-bar minibuf ?\?]
1159       (list 'menu-item "List Completions" 'minibuffer-completion-help
1160             :help "Display all possible completions"))
1161     (define-key map [menu-bar minibuf space]
1162       (list 'menu-item "Complete Word" 'minibuffer-complete-word
1163             :help "Complete at most one word"))
1164     (define-key map [menu-bar minibuf tab]
1165       (list 'menu-item "Complete" 'minibuffer-complete
1166             :help "Complete as far as possible"))
1167     ))
1168  (list minibuffer-local-must-match-map
1169        minibuffer-local-completion-map))
1170
1171 (mapcar
1172  (function
1173   (lambda (map)
1174     (define-key map [menu-bar minibuf quit]
1175       (list 'menu-item "Quit" 'keyboard-escape-quit
1176             :help "Abort input and exit minibuffer"))
1177     (define-key map [menu-bar minibuf return]
1178       (list 'menu-item "Enter" 'exit-minibuffer
1179             :help "Terminate input and exit minibuffer"))
1180     ))
1181  (list minibuffer-local-ns-map
1182        minibuffer-local-must-match-map
1183        minibuffer-local-isearch-map
1184        minibuffer-local-map
1185        minibuffer-local-completion-map))
1186 \f
1187 (defcustom menu-bar-mode nil
1188   "Toggle display of a menu bar on each frame.
1189 Setting this variable directly does not take effect;
1190 use either \\[customize] or the function `menu-bar-mode'."
1191   :set (lambda (symbol value)
1192          (menu-bar-mode (or value 0)))
1193   :initialize 'custom-initialize-default
1194   :type 'boolean
1195   :group 'frames)
1196
1197 (defun menu-bar-mode (flag)
1198   "Toggle display of a menu bar on each frame.
1199 This command applies to all frames that exist and frames to be
1200 created in the future.
1201 With a numeric argument, if the argument is positive,
1202 turn on menu bars; otherwise, turn off menu bars."
1203  (interactive "P")
1204
1205   ;; Make menu-bar-mode and default-frame-alist consistent.
1206   (let ((default (assq 'menu-bar-lines default-frame-alist)))
1207     (if default
1208         (setq menu-bar-mode (not (eq (cdr default) 0)))
1209       (setq default-frame-alist
1210             (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
1211                   default-frame-alist))))
1212
1213   ;; Toggle or set the mode, according to FLAG.
1214  (setq menu-bar-mode (if (null flag) (not menu-bar-mode)
1215                        (> (prefix-numeric-value flag) 0)))
1216
1217  ;; Apply it to default-frame-alist.
1218  (let ((parameter (assq 'menu-bar-lines default-frame-alist)))
1219    (if (consp parameter)
1220        (setcdr parameter (if menu-bar-mode 1 0))
1221      (setq default-frame-alist
1222            (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
1223                  default-frame-alist))))
1224
1225  ;; Apply it to existing frames.
1226  (let ((frames (frame-list)))
1227    (while frames
1228      (let ((height (cdr (assq 'height (frame-parameters (car frames))))))
1229        (modify-frame-parameters (car frames)
1230                                 (list (cons 'menu-bar-lines
1231                                           (if menu-bar-mode 1 0))))
1232        (modify-frame-parameters (car frames)
1233                                 (list (cons 'height height))))
1234      (setq frames (cdr frames)))))
1235
1236 (provide 'menu-bar)
1237
1238 ;;; menu-bar.el ends here