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 (B+W)" ps-print-region
 108               :enable mark-active
 109               :help "Pretty-print marked region in black and white to PostScript printer"))
 110 (define-key menu-bar-files-menu [ps-print-buffer]
 111   '(menu-item "Postscript Print Buffer (B+W)" ps-print-buffer
 112               :help "Pretty-print current buffer in black and white to PostScript printer"))
 113 (define-key menu-bar-files-menu [ps-print-region-faces]
 114   '(menu-item "Postscript Print Region" ps-print-region-with-faces
 115               :enable mark-active
 116               :help "Pretty-print marked region to PostScript printer"))
 117 (define-key menu-bar-files-menu [ps-print-buffer-faces]
 118   '(menu-item "Postscript Print Buffer" ps-print-buffer-with-faces
 119               :help "Pretty-print current buffer to PostScript printer"))
 120 (define-key menu-bar-files-menu [print-region]
 121   '(menu-item "Print Region" print-region
 122               :enable mark-active
 123               :help "Print region between mark and current position"))
 124 (define-key menu-bar-files-menu [print-buffer]
 125   '(menu-item "Print Buffer" print-buffer
 126               :help "Print current buffer with page headings"))
 127
 128 (define-key menu-bar-files-menu [separator-print]
 129   '(menu-item "--"))
 130
 131 (define-key menu-bar-files-menu [recover-session]
 132   '(menu-item "Recover Crashed Session..." recover-session
 133               :enable (and auto-save-list-file-prefix
 134                            (file-directory-p
 135                             (file-name-directory auto-save-list-file-prefix))
 136                            (directory-files
 137                             (file-name-directory auto-save-list-file-prefix)
 138                             nil
 139                             (concat "\\`"
 140                                     (regexp-quote
 141                                      (file-name-nondirectory
 142                                       auto-save-list-file-prefix)))
 143                             t))
 144               :help "Recover edits from a crashed session"))
 145 (define-key menu-bar-files-menu [revert-buffer]
 146   '(menu-item "Revert Buffer" revert-buffer
 147               :enable (or revert-buffer-function
 148                           revert-buffer-insert-file-contents-function
 149                           (and (buffer-file-name)
 150                                (or (buffer-modified-p)
 151                                    (not (verify-visited-file-modtime
 152                                          (current-buffer))))))
 153               :help "Re-read current buffer from its file"))
 154 (define-key menu-bar-files-menu [write-file]
 155   '(menu-item "Save Buffer As..." write-file
 156               :enable (not (window-minibuffer-p
 157                             (frame-selected-window menu-updating-frame)))
 158               :help "Write current buffer to another file"))
 159 (define-key menu-bar-files-menu [save-buffer]
 160   '(menu-item "Save (current buffer)" save-buffer
 161               :enable (and (buffer-modified-p)
 162                            (buffer-file-name)
 163                            (not (window-minibuffer-p
 164                                  (frame-selected-window menu-updating-frame))))
 165               :help "Save current buffer to its file"))
 166
 167 (define-key menu-bar-files-menu [separator-save]
 168   '(menu-item "--"))
 169
 170 (define-key menu-bar-files-menu [kill-buffer]
 171   '(menu-item "Close (current buffer)" kill-this-buffer
 172               :enable (kill-this-buffer-enabled-p)
 173               :help "Discard current buffer"))
 174 (define-key menu-bar-files-menu [insert-file]
 175   '(menu-item "Insert File..." insert-file
 176               :enable (not (window-minibuffer-p
 177                             (frame-selected-window menu-updating-frame)))
 178               :help "Insert another file into current buffer"))
 179 (define-key menu-bar-files-menu [dired]
 180   '(menu-item "Open Directory..." dired
 181               :help "Read a directory, operate on its files"))
 182 (define-key menu-bar-files-menu [open-file]
 183   '(menu-item "Open File..." find-file
 184               :enable (not (window-minibuffer-p
 185                             (frame-selected-window menu-updating-frame)))
 186               :help "Read a file into an Emacs buffer"))
 187
 188 \f
 189 ;; The "Edit" menu items
 190 (defun nonincremental-search-forward (string)
 191   "Read a string and search for it nonincrementally."
 192   (interactive "sSearch for string: ")
 193   (if (equal string "")
 194       (search-forward (car search-ring))
 195     (isearch-update-ring string nil)
 196     (search-forward string)))
 197
 198 (defun nonincremental-search-backward (string)
 199   "Read a string and search backward for it nonincrementally."
 200   (interactive "sSearch for string: ")
 201   (if (equal string "")
 202       (search-backward (car search-ring))
 203     (isearch-update-ring string nil)
 204     (search-backward string)))
 205
 206 (defun nonincremental-re-search-forward (string)
 207   "Read a regular expression and search for it nonincrementally."
 208   (interactive "sSearch for regexp: ")
 209   (if (equal string "")
 210       (re-search-forward (car regexp-search-ring))
 211     (isearch-update-ring string t)
 212     (re-search-forward string)))
 213
 214 (defun nonincremental-re-search-backward (string)
 215   "Read a regular expression and search backward for it nonincrementally."
 216   (interactive "sSearch for regexp: ")
 217   (if (equal string "")
 218       (re-search-backward (car regexp-search-ring))
 219     (isearch-update-ring string t)
 220     (re-search-backward string)))
 221
 222 (defun nonincremental-repeat-search-forward ()
 223   "Search forward for the previous search string."
 224   (interactive)
 225   (if (null search-ring)
 226       (error "No previous search"))
 227   (search-forward (car search-ring)))
 228
 229 (defun nonincremental-repeat-search-backward ()
 230   "Search backward for the previous search string."
 231   (interactive)
 232   (if (null search-ring)
 233       (error "No previous search"))
 234   (search-backward (car search-ring)))
 235
 236 (defun nonincremental-repeat-re-search-forward ()
 237   "Search forward for the previous regular expression."
 238   (interactive)
 239   (if (null regexp-search-ring)
 240       (error "No previous search"))
 241   (re-search-forward (car regexp-search-ring)))
 242
 243 (defun nonincremental-repeat-re-search-backward ()
 244   "Search backward for the previous regular expression."
 245   (interactive)
 246   (if (null regexp-search-ring)
 247       (error "No previous search"))
 248   (re-search-backward (car regexp-search-ring)))
 249
 250 (defvar menu-bar-search-menu (make-sparse-keymap "Search"))
 251 (defvar menu-bar-adv-search-menu
 252   (make-sparse-keymap "Advanced Search/Replace"))
 253
 254 (define-key menu-bar-adv-search-menu [tags-continue]
 255   '(menu-item "Continue Tags Search/Replace" tags-loop-continue
 256               :help "Continue last tags search/replace operation"))
 257 (define-key menu-bar-adv-search-menu [tags-repl]
 258   '(menu-item "Replace in all tagged files" tags-query-replace
 259               :help "Interactively replace a regexp in all tagged files"))
 260 (define-key menu-bar-adv-search-menu [tags-srch]
 261   '(menu-item "Search in all tagged files" tags-search
 262               :help "Search for a regexp in all tagged files"))
 263
 264 (define-key menu-bar-adv-search-menu [separator-tag-search]
 265   '(menu-item "--"))
 266
 267 (define-key menu-bar-adv-search-menu [query-replace-regexp]
 268   '(menu-item "Replace Regexp..." query-replace-regexp
 269               :enable (not buffer-read-only)
 270               :help "Replace regular expression, ask about each occurrence"))
 271 (define-key menu-bar-adv-search-menu [repeat-regexp-back]
 272   '(menu-item "Repeat Regexp Backwards"
 273               nonincremental-repeat-re-search-backward
 274               :enable regexp-search-ring
 275               :help "Repeat last regular expression search backwards"))
 276 (define-key menu-bar-adv-search-menu [repeat-regexp-fwd]
 277   '(menu-item "Repeat Regexp" nonincremental-repeat-re-search-forward
 278               :enable regexp-search-ring
 279               :help "Repeat last regular expression search forward"))
 280 (define-key menu-bar-adv-search-menu [re-search-backward]
 281   '(menu-item "Search Regexp Backwards..." nonincremental-re-search-backward
 282               :help "Search backwards for a regular expression"))
 283 (define-key menu-bar-adv-search-menu [re-search-forward]
 284   '(menu-item "Search Regexp..." nonincremental-re-search-forward
 285               :help "Search forward for a regular expression"))
 286 (define-key menu-bar-search-menu [re-search]
 287   (list 'menu-item "Advanced Search/Replace" menu-bar-adv-search-menu
 288               :help "Regexp and Tags search and replace"))
 289
 290 (define-key menu-bar-search-menu [query-replace]
 291   '(menu-item "Replace..." query-replace
 292               :enable (not buffer-read-only)
 293               :help "Replace string interactively, ask about each occurrence"))
 294 (define-key menu-bar-search-menu [repeat-search-back]
 295   '(menu-item "Repeat Backwards" nonincremental-repeat-search-backward
 296               :enable search-ring
 297               :help "Repeat last search backwards"))
 298 (define-key menu-bar-search-menu [repeat-search-fwd]
 299   '(menu-item "Repeat Search" nonincremental-repeat-search-forward
 300               :enable search-ring
 301               :help "Repeat last search forward"))
 302 (define-key menu-bar-search-menu [search-backward]
 303   '(menu-item "Search Backwards..." nonincremental-search-backward
 304               :help "Search backwards for a string"))
 305 (define-key menu-bar-search-menu [search-forward]
 306   '(menu-item "Search..." nonincremental-search-forward
 307               :help "Search forward for a string"))
 308
 309 ;;; Assemble the top-level Edit menu items.
 310 (define-key menu-bar-edit-menu [props]
 311   '(menu-item "Text Properties" facemenu-menu
 312               :help "Change properties of text in region"))
 313
 314 (define-key menu-bar-search-menu [separator-search]
 315   '(menu-item "--"))
 316
 317 (define-key menu-bar-edit-menu [bookmark]
 318   '(menu-item "Bookmarks" menu-bar-bookmark-map
 319               :help "Record positions and jump between them"))
 320
 321 (define-key menu-bar-edit-menu [separator-bookmark]
 322   '(menu-item "--"))
 323
 324 (defvar menu-bar-goto-menu (make-sparse-keymap "Go To"))
 325
 326 (define-key menu-bar-goto-menu [set-tags-name]
 327   '(menu-item "Set Tags File Name" visit-tags-table
 328               :help "Tell Tags commands which tag table file to use"))
 329
 330 (define-key menu-bar-goto-menu [separator-tag-file]
 331   '(menu-item "--"))
 332
 333 (define-key menu-bar-goto-menu [apropos-tags]
 334   '(menu-item "Tags Apropos" tags-apropos
 335               :help "Find function/variables whose names match regexp"))
 336 (define-key menu-bar-goto-menu [next-tag-otherw]
 337   '(menu-item "Next Tag in Other Window"
 338               (function (lambda () (find-tag-other-window nil t)))
 339               :enable (and (boundp 'tags-location-ring)
 340                            (not (ring-empty-p tags-location-ring)))
 341               :help "Find next function/variable matching last tag name in another window"))
 342 (define-key menu-bar-goto-menu [next-tag]
 343   '(menu-item "Find Next Tag"
 344               (function (lambda () (find-tag nil t)))
 345               :enable (and (boundp 'tags-location-ring)
 346                            (not (ring-empty-p tags-location-ring)))
 347               :help "Find next function/variable matching last tag name"))
 348 (define-key menu-bar-goto-menu [find-tag-otherw]
 349   '(menu-item "Find Tag in Other Window..." find-tag-other-window
 350               :help "Find function/variable definition in another window"))
 351 (define-key menu-bar-goto-menu [find-tag]
 352   '(menu-item "Find Tag..." find-tag
 353               :help "Find definition of function or variable"))
 354
 355 (define-key menu-bar-goto-menu [separator-tags]
 356   '(menu-item "--"))
 357
 358 (define-key menu-bar-goto-menu [end-of-buf]
 359   '(menu-item "Goto End of Buffer" end-of-buffer))
 360 (define-key menu-bar-goto-menu [beg-of-buf]
 361   '(menu-item "Goto Beginning of Buffer" beginning-of-buffer))
 362 (define-key menu-bar-goto-menu [go-to-pos]
 363   '(menu-item "Goto Buffer Position..." goto-char
 364               :help "Read a number N and go to buffer position N"))
 365 (define-key menu-bar-goto-menu [go-to-line]
 366   '(menu-item "Goto Line..." goto-line
 367               :help "Read a line number and go to that line"))
 368
 369 (define-key menu-bar-edit-menu [goto]
 370   (list 'menu-item "Go To" menu-bar-goto-menu))
 371
 372 (define-key menu-bar-edit-menu [search]
 373   (list 'menu-item "Search" menu-bar-search-menu))
 374
 375 (define-key menu-bar-edit-menu [fill]
 376   '(menu-item "Fill" fill-region
 377               :enable (and mark-active (not buffer-read-only))
 378               :help
 379               "Fill text in region to fit between left and right margin"))
 380 (define-key menu-bar-edit-menu [mark-whole-buffer]
 381   '(menu-item "Select All" mark-whole-buffer
 382               :help "Mark the whole buffer for a subsequent cut/copy."))
 383 (define-key menu-bar-edit-menu [clear]
 384   '(menu-item "Clear" delete-region
 385               :enable (and mark-active
 386                            (not buffer-read-only)
 387                            (not (mouse-region-match)))
 388               :help
 389               "Delete the text in region between mark and current position"))
 390 (defvar yank-menu (cons "Select Yank" nil))
 391 (fset 'yank-menu (cons 'keymap yank-menu))
 392 (define-key menu-bar-edit-menu [select-paste]
 393   '(menu-item "Select and Paste" yank-menu
 394               :enable (and (cdr yank-menu) (not buffer-read-only))
 395               :help "Paste text cut/copied earlier"))
 396 (define-key menu-bar-edit-menu [paste]
 397   '(menu-item "Paste" yank
 398               :enable (and (x-selection-exists-p) (not buffer-read-only))
 399               :help "Paste text most recently cut/copied"))
 400 (define-key menu-bar-edit-menu [copy]
 401   '(menu-item "Copy" menu-bar-kill-ring-save
 402               :enable mark-active
 403               :help "Copy text in region between mark and current position"))
 404 (define-key menu-bar-edit-menu [cut]
 405   '(menu-item "Cut" kill-region
 406               :enable (and mark-active (not buffer-read-only))
 407               :help
 408               "Cut (kill) text in region between mark and current position"))
 409 (define-key menu-bar-edit-menu [undo]
 410   '(menu-item "Undo" undo
 411               :enable (and (not buffer-read-only)
 412                            (not (eq t buffer-undo-list))
 413                            (if (eq last-command 'undo)
 414                                pending-undo-list
 415                              (consp buffer-undo-list)))
 416               :help "Undo last operation"))
 417
 418
 419 (defun menu-bar-kill-ring-save (beg end)
 420   (interactive "r")
 421   (if (mouse-region-match)
 422       (message "Selecting a region with the mouse does `copy' automatically")
 423     (kill-ring-save beg end)))
 424
 425 (autoload 'ispell-menu-map "ispell" nil t 'keymap)
 426
 427 ;; These are alternative definitions for the cut, paste and copy
 428 ;; menu items.  Use them if your system expects these to use the clipboard.
 429
 430 (put 'clipboard-kill-region 'menu-enable 'mark-active)
 431 (put 'clipboard-kill-ring-save 'menu-enable 'mark-active)
 432 (put 'clipboard-yank 'menu-enable
 433      '(or (x-selection-exists-p) (x-selection-exists-p 'CLIPBOARD)))
 434
 435 (defun clipboard-yank ()
 436   "Insert the clipboard contents, or the last stretch of killed text."
 437   (interactive)
 438   (let ((x-select-enable-clipboard t))
 439     (yank)))
 440
 441 (defun clipboard-kill-ring-save (beg end)
 442   "Copy region to kill ring, and save in the X clipboard."
 443   (interactive "r")
 444   (let ((x-select-enable-clipboard t))
 445     (kill-ring-save beg end)))
 446
 447 (defun clipboard-kill-region (beg end)
 448   "Kill the region, and save it in the X clipboard."
 449   (interactive "r")
 450   (let ((x-select-enable-clipboard t))
 451     (kill-region beg end)))
 452
 453 (defun menu-bar-enable-clipboard ()
 454   "Make CUT, PASTE and COPY (keys and menu bar items) use the clipboard.
 455 Do the same for the keys of the same name."
 456   (interactive)
 457   ;; We can't use constant list structure here because it becomes pure,
 458   ;; and because it gets modified with cache data.
 459   (define-key menu-bar-edit-menu [paste]
 460     (cons "Paste" (cons "Paste text from clipboard" 'clipboard-yank)))
 461   (define-key menu-bar-edit-menu [copy]
 462     (cons "Copy" (cons "Copy text in region to the clipboard"
 463                        'clipboard-kill-ring-save)))
 464   (define-key menu-bar-edit-menu [cut]
 465     (cons "Cut" (cons "Delete text in region and copy it to the clipboard"
 466                       'clipboard-kill-region)))
 467
 468   (define-key global-map [f20] 'clipboard-kill-region)
 469   (define-key global-map [f16] 'clipboard-kill-ring-save)
 470   (define-key global-map [f18] 'clipboard-yank)
 471   ;; X11R6 versions
 472   (define-key global-map [cut] 'clipboard-kill-region)
 473   (define-key global-map [copy] 'clipboard-kill-ring-save)
 474   (define-key global-map [paste] 'clipboard-yank))
 475 \f
 476 ;; The "Options" menu items
 477
 478 (defvar menu-bar-custom-menu (make-sparse-keymap "Customize"))
 479
 480 (define-key menu-bar-custom-menu [customize-apropos-groups]
 481   '(menu-item "Groups Matching Regexp..." customize-apropos-groups
 482               :help "Browse groups whose names match regexp"))
 483 (define-key menu-bar-custom-menu [customize-apropos-faces]
 484   '(menu-item "Faces Matching Regexp..." customize-apropos-faces
 485               :help "Browse faces whose names match regexp"))
 486 (define-key menu-bar-custom-menu [customize-apropos-options]
 487   '(menu-item "Options Matching Regexp..." customize-apropos-options
 488               :help "Browse options whose names match regexp"))
 489 (define-key menu-bar-custom-menu [customize-apropos]
 490   '(menu-item "Settings Matching Regexp..." customize-apropos
 491               :help "Browse customizable settings whose names match regexp"))
 492 (define-key menu-bar-custom-menu [separator-2]
 493   '("--"))
 494 (define-key menu-bar-custom-menu [customize-group]
 495   '(menu-item "Specific Group..." customize-group
 496               :help "Customize settings of specific group"))
 497 (define-key menu-bar-custom-menu [customize-face]
 498   '(menu-item "Specific Face..." customize-face
 499               :help "Customize attributes of specific face"))
 500 (define-key menu-bar-custom-menu [customize-option]
 501   '(menu-item "Specific Option..." customize-option
 502               :help "Change value of specific option"))
 503 (define-key menu-bar-custom-menu [customize-changed-options]
 504   '(menu-item "Recently Changed Options..." customize-changed-options
 505               :help "Customize options changed in recent versions"))
 506 (define-key menu-bar-custom-menu [separator-3]
 507   '("--"))
 508 (define-key menu-bar-custom-menu [customize-browse]
 509   '(menu-item "Browse Customization Groups" customize-browse
 510               :help "Browse all customization groups"))
 511 (define-key menu-bar-custom-menu [customize]
 512   '(menu-item "Top-level Customization Group" customize
 513               :help "The master group called `Emacs'"))
 514
 515 ;(defvar menu-bar-preferences-menu (make-sparse-keymap "Preferences"))
 516
 517 (defmacro menu-bar-make-toggle (name variable doc message help &rest body)
 518   `(progn
 519      (defun ,name ()
 520        ,(concat doc ".")
 521        (interactive)
 522        (if ,(if body `(progn . ,body)
 523               `(setq ,variable (not ,variable)))
 524            (message ,message "enabled")
 525          (message ,message "disabled")))
 526      '(menu-item ,doc ,name
 527                  :help ,help
 528                  :button (:toggle . (and (boundp ',variable) ,variable)))))
 529
 530 ;;; Assemble all the top-level items of the "Options" menu
 531 (define-key menu-bar-options-menu [customize]
 532   (list 'menu-item "Customize Emacs" menu-bar-custom-menu
 533         :help "Full customization of every Emacs feature"))
 534
 535 (defun menu-bar-options-save ()
 536   "Save current values of Options menu items using Custom."
 537   (interactive)
 538   (dolist (elt '(debug-on-quit debug-on-error auto-compression-mode
 539                  case-fold-search truncate-lines show-paren-mode
 540                  transient-mark-mode global-font-lock-mode
 541                  current-language-environment default-input-method))
 542     (if (default-value elt)
 543         (customize-save-variable elt (default-value elt))))
 544   (if (memq 'turn-on-auto-fill text-mode-hook)
 545       (customize-save-variable 'text-mode-hook
 546                                (default-value 'text-mode-hook)))
 547   (if (featurep 'saveplace)
 548       (customize-save-variable 'save-place (default-value 'save-place)))
 549   (if (featurep 'uniquify)
 550       (customize-save-variable 'uniquify-buffer-name-style
 551                                (default-value 'uniquify-buffer-name-style))))
 552
 553 (define-key menu-bar-options-menu [save]
 554   '(menu-item "Save Options" menu-bar-options-save
 555               :help "Save options set from the menu above"))
 556
 557 (define-key menu-bar-options-menu [custom-separator]
 558   '("--"))
 559
 560 (define-key menu-bar-options-menu [mule]
 561   ;; It is better not to use backquote here,
 562   ;; because that makes a bootstrapping problem
 563   ;; if you need to recompile all the Lisp files using interpreted code.
 564   (list 'menu-item "Mule (Multilingual Environment)" mule-menu-keymap
 565 ;; Most of the MULE menu actually does make sense in unibyte mode,
 566 ;; e.g. language selection.
 567 ;;;     ':visible 'default-enable-multibyte-characters
 568         ':help "Default language, encodings, input method"))
 569 ;(setq menu-bar-final-items (cons 'mule menu-bar-final-items))
 570 ;(define-key menu-bar-options-menu [preferences]
 571 ;  (list 'menu-item "Preferences" menu-bar-preferences-menu
 572 ;       :help "Toggle important global options"))
 573
 574 (define-key menu-bar-options-menu [mule-separator]
 575   '("--"))
 576
 577 (define-key menu-bar-options-menu [debug-on-quit]
 578   (menu-bar-make-toggle toggle-debug-on-quit debug-on-quit
 579                         "Enter Debugger on Quit/C-g" "Debug on Quit %s"
 580                         "Enter Lisp debugger when C-g is pressed"))
 581 (define-key menu-bar-options-menu [debug-on-error]
 582   (menu-bar-make-toggle toggle-debug-on-error debug-on-error
 583                         "Enter Debugger on Error" "Debug on Error %s"
 584                         "Enter Lisp debugger when error is signaled"))
 585 (define-key menu-bar-options-menu [debugger-separator]
 586   '("--"))
 587 (define-key menu-bar-options-menu [toggle-auto-compression]
 588   '(menu-item "Automatic File De/compression"
 589              auto-compression-mode
 590              :help "Transparently decompress compressed files"
 591              :button (:toggle . (rassq 'jka-compr-handler
 592                                        file-name-handler-alist))))
 593 (define-key menu-bar-options-menu [save-place]
 594   (menu-bar-make-toggle toggle-save-place-globally save-place
 595                         "Save Place in Files between Sessions"
 596                         "Saving place in files %s"
 597                         "Save Emacs state for next session"
 598                         (require 'saveplace)
 599                         (setq-default save-place
 600                                       (not (default-value save-place)))))
 601 (define-key menu-bar-options-menu [uniquify]
 602   (menu-bar-make-toggle toggle-uniquify-buffer-names uniquify-buffer-name-style
 603                         "Use Directory Names in Buffer Names"
 604                         "Directory name in buffer names (uniquify) %s"
 605                         "Uniquify a buffer name by adding parent directory names until unique"
 606                         (require 'uniquify)
 607                         (setq uniquify-buffer-name-style
 608                               (if (not uniquify-buffer-name-style)
 609                                   'forward))))
 610 (define-key menu-bar-options-menu [edit-options-separator]
 611   '("--"))
 612 (define-key menu-bar-options-menu [case-fold-search]
 613   (menu-bar-make-toggle toggle-case-fold-search case-fold-search
 614                         "Case-Insensitive Search"
 615                         "Case-Insensitive Search %s"
 616                         "If checked, search ignores letter-case"))
 617 (define-key menu-bar-options-menu [auto-fill-mode]
 618   '(menu-item "Word Wrap in Text Modes (Auto Fill)"
 619               toggle-text-mode-auto-fill
 620               :help "Automatically fill text between left and right margins"
 621               :button (:toggle . (member 'turn-on-auto-fill text-mode-hook))))
 622 (define-key menu-bar-options-menu [truncate-lines]
 623   (menu-bar-make-toggle
 624    toggle-truncate-lines truncate-lines
 625    "Truncate Long Lines in this Buffer" "Long Line Truncation %s"
 626    "If checked, long lines are truncated on the screen"
 627    (prog1 (setq truncate-lines (not truncate-lines))
 628      (set-buffer-modified-p (buffer-modified-p)))))
 629 (define-key menu-bar-options-menu [highlight-separator]
 630   '("--"))
 631 (define-key menu-bar-options-menu [highlight-paren-mode]
 632   (menu-bar-make-toggle toggle-highlight-paren-mode show-paren-mode
 633                         "Highlight Matching Parentheses"
 634                         "Show Paren mode %s"
 635                         "Highlight matching and mismatched parentheses"))
 636 (define-key menu-bar-options-menu [transient-mark-mode]
 637   (menu-bar-make-toggle toggle-transient-mark-mode transient-mark-mode
 638                         "Transient Mark Mode (highlights region)"
 639                         "Transient Mark mode %s"
 640                         "Highlight the marked region when it's active"))
 641 (define-key menu-bar-options-menu [toggle-global-lazy-font-lock-mode]
 642   (menu-bar-make-toggle toggle-global-lazy-font-lock-mode global-font-lock-mode
 643                         "Highlight Syntax (Global Font Lock)"
 644                         "Syntax Highlighting %s"
 645                         "Highlights text based on language syntax"
 646                         (global-font-lock-mode)))
 647
 648 \f
 649 ;; The "Tools" menu items
 650
 651 (defun send-mail-item-name ()
 652   (let* ((known-send-mail-commands '((sendmail-user-agent . "sendmail")
 653                                      (mh-e-user-agent . "MH")
 654                                      (message-user-agent . "Gnus Message")
 655                                      (gnus-user-agent . "Gnus")))
 656          (name (assq mail-user-agent known-send-mail-commands)))
 657     (if name
 658         (setq name (cdr name))
 659       (setq name (symbol-name mail-user-agent))
 660       (if (string-match "\\(.+\\)-user-agent" name)
 661           (setq name (match-string 1 name))))
 662     name))
 663
 664 (defun read-mail-item-name ()
 665   (let* ((known-rmail-commands '((rmail . "RMAIL")
 666                                  (mh-rmail . "MH")
 667                                  (gnus . "Gnus")))
 668          (known (assq read-mail-command known-rmail-commands)))
 669     (if known (cdr known) (symbol-name read-mail-command))))
 670
 671 (defvar menu-bar-games-menu (make-sparse-keymap "Games"))
 672
 673 (define-key menu-bar-tools-menu [games]
 674   (list 'menu-item "Games" menu-bar-games-menu))
 675
 676 (define-key menu-bar-tools-menu [separator-games]
 677   '("--"))
 678
 679 (define-key menu-bar-games-menu [zone]
 680   '(menu-item "Zone Out"  zone
 681               :help "Play tricks with Emacs display when Emacs is idle"))
 682 (define-key menu-bar-games-menu [yow]
 683   '(menu-item "Random Quotation"  yow
 684               :help "Display a random Zippy quotation"))
 685 (define-key menu-bar-games-menu [tetris]
 686   '(menu-item "Tetris"  tetris))
 687 (define-key menu-bar-games-menu [solitaire]
 688   '(menu-item "Solitaire"  solitaire))
 689 (define-key menu-bar-games-menu [snake]
 690   '(menu-item "Snake"  snake
 691               :help "Move snake around avoiding collisions"))
 692 (define-key menu-bar-games-menu [mult]
 693   '(menu-item "Multiplication Puzzle"  mpuz
 694               :help "Excercise brain with multiplication"))
 695 (define-key menu-bar-games-menu [life]
 696   '(menu-item "Life"  life
 697               :help "Watch how John Conway's cellular automaton evolves"))
 698 (define-key menu-bar-games-menu [hanoi]
 699   '(menu-item "Towers of Hanoi" hanoi
 700               :help "Watch Towers-of-Hanoi puzzle solved by Emacs"))
 701 (define-key menu-bar-games-menu [gomoku]
 702   '(menu-item "Gomoku"  gomoku
 703               :help "Mark 5 contiguous squares (like tic-tac-toe)"))
 704 (define-key menu-bar-games-menu [black-box]
 705   '(menu-item "Blackbox"  blackbox
 706               :help "Find balls in a black box by shooting rays"))
 707 (define-key menu-bar-games-menu [adventure]
 708   '(menu-item "Adventure"  dunnet
 709               :help "Dunnet, a text Adventure game for Emacs"))
 710 (define-key menu-bar-games-menu [5x5]
 711   '(menu-item "5x5" 5x5
 712               :help "Fill in all the squares on a 5x5 board"))
 713
 714 (define-key menu-bar-tools-menu [calendar]
 715   '(menu-item "Display Calendar" calendar))
 716 (define-key menu-bar-tools-menu [speedbar]
 717   '(menu-item "Display Speedbar" speedbar-frame-mode))
 718 (define-key menu-bar-tools-menu [directory-search]
 719   '(menu-item "Directory Search" eudc-tools-menu
 720               :help "Query directory servers via LDAP, CCSO PH/QI or BBDB"))
 721 (define-key menu-bar-tools-menu [compose-mail]
 722   (list
 723    'menu-item `(format "Send Mail (with %s)" (send-mail-item-name))
 724    'compose-mail
 725    :visible `(and mail-user-agent (not (eq mail-user-agent 'ignore)))
 726    :help "Send a mail message"))
 727 (define-key menu-bar-tools-menu [rmail]
 728   (list
 729    'menu-item `(format "Read Mail (with %s)" (read-mail-item-name))
 730    (lambda ()
 731      (interactive)
 732      (call-interactively read-mail-command))
 733    :visible `(and read-mail-command (not (eq read-mail-command 'ignore)))
 734    :help "Read your mail and reply to it"))
 735 (define-key menu-bar-tools-menu [gnus]
 736   '(menu-item "Read Net News (Gnus)" gnus
 737               :help "Read network news groups"))
 738
 739 (define-key menu-bar-tools-menu [separator-vc]
 740   '("--"))
 741
 742 (defvar vc-menu-map (make-sparse-keymap "Version Control"))
 743 (define-key menu-bar-tools-menu [pcl-cvs]
 744   `(menu-item "PCL-CVS" ,cvs-global-menu
 745               :help "Module-level interface to CVS"))
 746 (define-key menu-bar-tools-menu [vc]
 747   (list 'menu-item "Version Control" vc-menu-map
 748         :help "Interface to RCS, CVS, SCCS"))
 749
 750 (define-key menu-bar-tools-menu [separator-compare]
 751   '("--"))
 752
 753 (define-key menu-bar-tools-menu [ediff-misc]
 754   '(menu-item "Ediff Miscellanea" menu-bar-ediff-misc-menu
 755               :help "Ediff manual, customization, sessions, etc."))
 756 (define-key menu-bar-tools-menu [epatch]
 757   '(menu-item "Apply Patch" menu-bar-epatch-menu))
 758 (define-key menu-bar-tools-menu [ediff-merge]
 759   '(menu-item "Merge" menu-bar-ediff-merge-menu
 760               :help "Merge different revisions of files/directories"))
 761 (define-key menu-bar-tools-menu [compare]
 762   '(menu-item "Compare (Ediff)" menu-bar-ediff-menu
 763               :help "Display differences between files/directories"))
 764
 765
 766 (define-key menu-bar-tools-menu [separator-spell]
 767   '("--"))
 768
 769 (define-key menu-bar-tools-menu [spell]
 770   '(menu-item "Spell Checking" ispell-menu-map))
 771
 772 (define-key menu-bar-tools-menu [separator-prog]
 773   '("--"))
 774
 775 (define-key menu-bar-tools-menu [gdb]
 776   '(menu-item "Debugger (GUD)..." gdb
 777               :help "Debug a program from within Emacs"))
 778 (define-key menu-bar-tools-menu [shell-on-region]
 779   '(menu-item "Shell Command on Region..." shell-command-on-region
 780               :enable mark-active
 781               :help "Pass marked region to a shell command"))
 782 (define-key menu-bar-tools-menu [shell]
 783   '(menu-item "Shell Command..." shell-command
 784               :help "Invoke a shell command and catch its output"))
 785 (define-key menu-bar-tools-menu [compile]
 786   '(menu-item "Compile..." compile
 787               :help "Invoke compiler or Make, view compilation errors"))
 788 (define-key menu-bar-tools-menu [grep]
 789   '(menu-item "Search Files (Grep)..." grep
 790               :help "Search files for strings or regexps (with Grep)"))
 791
 792 \f
 793 ;; The "Help" menu items
 794
 795 (defvar menu-bar-describe-menu (make-sparse-keymap "Describe"))
 796
 797 (define-key menu-bar-describe-menu [mule-diag]
 798   '(menu-item "Show All of Mule Status" mule-diag
 799               :visible default-enable-multibyte-characters
 800               :help "Display multilingual environment settings"))
 801 (define-key menu-bar-describe-menu [describe-coding-system]
 802   '(menu-item "Describe Coding System..." describe-coding-system
 803               :visible default-enable-multibyte-characters))
 804 (define-key menu-bar-describe-menu [describe-input-method]
 805   '(menu-item "Describe Input Method..." describe-input-method
 806               :visible default-enable-multibyte-characters
 807               :help "Keyboard layout for specific input method"))
 808 (define-key menu-bar-describe-menu [describe-language-environment]
 809   (list 'menu-item "Describe Language Environment"
 810         describe-language-environment-map
 811         :help "Show multilingual settings for a specific language"))
 812
 813 (define-key menu-bar-describe-menu [separator-desc-mule]
 814   '("--"))
 815
 816 (define-key menu-bar-describe-menu [list-keybindings]
 817   '(menu-item "List Key Bindings" describe-bindings
 818               :help "Display a list of all current keybindings"))
 819 (define-key menu-bar-describe-menu [list-keybindings]
 820   '(menu-item "List Key Bindings" describe-bindings
 821               :help "Display a list of all current keybindings"))
 822 (define-key menu-bar-describe-menu [describe-variable]
 823   '(menu-item "Describe Variable..." describe-variable
 824               :help "Display documentation of variable/option"))
 825 (define-key menu-bar-describe-menu [describe-function]
 826   '(menu-item "Describe Function..." describe-function
 827               :help "Display documentation of function/command"))
 828 (define-key menu-bar-describe-menu [describe-key]
 829   '(menu-item "Describe Key..." describe-key
 830               ;; Users typically don't identify keys and menu items...
 831               :help "Display documentation of command bound to a \
 832 key (or menu-item)"))
 833 (define-key menu-bar-describe-menu [apropos-variables]
 834   '(menu-item "Apropos Variables..." apropos-variable
 835               :help "List variables whose names match a regexp"))
 836 (define-key menu-bar-describe-menu [apropos-commands]
 837   '(menu-item "Apropos Commands..." apropos-command
 838               :help "List commands whose names match a regexp"))
 839 (define-key menu-bar-describe-menu [describe-mode]
 840   '(menu-item "Describe Buffer Modes" describe-mode
 841               :help "Describe this buffer's major and minor mode"))
 842
 843 (defvar menu-bar-manuals-menu (make-sparse-keymap "Manuals"))
 844
 845 (define-key menu-bar-manuals-menu [man]
 846   '(menu-item "Read Man Page..." manual-entry
 847               :help "Man-page docs for external commands and libraries"))
 848 (define-key menu-bar-manuals-menu [sep2]
 849   '("--"))
 850 (define-key menu-bar-manuals-menu [info]
 851   '(menu-item "Browse Manuals with Info" Info-directory
 852               :help "Read any of the installed manuals"))
 853 (define-key menu-bar-manuals-menu [command]
 854   '(menu-item "Find Command in Manual" Info-goto-emacs-command-node
 855               :help "Display manual section that describes a command"))
 856 (define-key menu-bar-manuals-menu [key]
 857   '(menu-item "Find Key in Manual" Info-goto-emacs-key-command-node
 858               :help "Display manual section that describes a key"))
 859
 860 (define-key menu-bar-help-menu [eliza]
 861   '(menu-item "Emacs Psychiatrist" doctor
 862               :help "Our doctor will help you feel better"))
 863 (define-key menu-bar-help-menu [sep3]
 864   '("--"))
 865 (define-key menu-bar-help-menu [describe-no-warranty]
 866   '(menu-item "(Non)Warranty" describe-no-warranty
 867               :help "Explain that Emacs has NO WARRANTY"))
 868 (define-key menu-bar-help-menu [describe-copying]
 869   '(menu-item "Copying Conditions" describe-copying
 870               :help "Show the Emacs license (GPL)"))
 871 (define-key menu-bar-help-menu [describe-distribution]
 872   '(menu-item "Getting New Versions" describe-distribution
 873               :help "How to get latest versions of Emacs"))
 874 (define-key menu-bar-help-menu [more]
 875   '(menu-item "Find Extra Packages"
 876               (lambda ()
 877                 (interactive)
 878                 (let (enable-local-variables)
 879                   (view-file (expand-file-name "MORE.STUFF"
 880                                                data-directory))
 881                   (goto-address)))
 882               :help "Where to find some extra packages and possible updates"))
 883 (define-key menu-bar-help-menu [emacs-version]
 884   '(menu-item "Show Emacs Version" emacs-version))
 885 (define-key menu-bar-help-menu [sep2]
 886   '("--"))
 887 (define-key menu-bar-help-menu [finder-by-keyword]
 888   '(menu-item "Find Emacs Packages..." finder-by-keyword
 889               :help "Find packages and features by keyword"))
 890 (define-key menu-bar-help-menu [describe]
 891   (list 'menu-item "Describe" menu-bar-describe-menu
 892         :help "Describe commands, variables, keys"))
 893 (define-key menu-bar-help-menu [manuals]
 894   (list 'menu-item "Manuals" menu-bar-manuals-menu
 895         :help "Lookup commands and keys in docs, read manuals"))
 896 (define-key menu-bar-help-menu [sep1]
 897   '("--"))
 898 (define-key menu-bar-help-menu [report-emacs-bug]
 899   '(menu-item "Send Bug Report..." report-emacs-bug
 900               :help "Send e-mail to Emacs maintainers"))
 901 (define-key menu-bar-help-menu [emacs-manual]
 902   '(menu-item "Read the Emacs Manual"
 903               (lambda () (interactive) (info "emacs"))))
 904 (define-key menu-bar-help-menu [emacs-problems]
 905   '(menu-item "Emacs Known Problems" view-emacs-problems))
 906 (define-key menu-bar-help-menu [emacs-news]
 907   '(menu-item "Emacs News" view-emacs-news
 908               :help "New features of this version"))
 909 (define-key menu-bar-help-menu [emacs-faq]
 910   '(menu-item "Emacs FAQ" view-emacs-FAQ))
 911 (define-key menu-bar-help-menu [emacs-tutorial-language-specific]
 912   '(menu-item "Emacs Tutorial (choose language)..."
 913               (lambda () (interactive) (help-with-tutorial t))
 914               :help "Learn how to use Emacs (choose a language)"))
 915 (define-key menu-bar-help-menu [emacs-tutorial]
 916   '(menu-item "Emacs Tutorial" help-with-tutorial
 917               :help "Learn how to use Emacs"))
 918
 919 (defun kill-this-buffer ()      ; for the menubar
 920   "Kill the current buffer."
 921   (interactive)
 922   (kill-buffer (current-buffer)))
 923
 924 (defun kill-this-buffer-enabled-p ()
 925   (let ((count 0)
 926         (buffers (buffer-list)))
 927     (while buffers
 928       (or (string-match "^ " (buffer-name (car buffers)))
 929           (setq count (1+ count)))
 930       (setq buffers (cdr buffers)))
 931     (and (not (window-minibuffer-p (frame-selected-window menu-updating-frame)))
 932          (> count 1))))
 933
 934 (put 'dired 'menu-enable
 935      '(not (window-minibuffer-p (frame-selected-window menu-updating-frame))))
 936
 937 ;; Permit deleting frame if it would leave a visible or iconified frame.
 938 (defun delete-frame-enabled-p ()
 939   "Return non-nil if `delete-frame' should be enabled in the menu bar."
 940   (let ((frames (frame-list))
 941         (count 0))
 942     (while frames
 943       (if (frame-visible-p (car frames))
 944           (setq count (1+ count)))
 945       (setq frames (cdr frames)))
 946     (> count 1)))
 947
 948 (defcustom yank-menu-length 20
 949   "*Maximum length to display in the yank-menu."
 950   :type 'integer
 951   :group 'mouse)
 952
 953 (defun menu-bar-update-yank-menu (string old)
 954   (let ((front (car (cdr yank-menu)))
 955         (menu-string (if (<= (length string) yank-menu-length)
 956                          string
 957                        (concat
 958                         (substring string 0 (/ yank-menu-length 2))
 959                         "..."
 960                         (substring string (- (/ yank-menu-length 2)))))))
 961     ;; Don't let the menu string be all dashes
 962     ;; because that has a special meaning in a menu.
 963     (if (string-match "\\`-+\\'" menu-string)
 964         (setq menu-string (concat menu-string " ")))
 965     ;; If we're supposed to be extending an existing string, and that
 966     ;; string really is at the front of the menu, then update it in place.
 967     (if (and old (or (eq old (car front))
 968                      (string= old (car front))))
 969         (progn
 970           (setcar front string)
 971           (setcar (cdr front) menu-string))
 972       (setcdr yank-menu
 973               (cons
 974                (cons string (cons menu-string 'menu-bar-select-yank))
 975                (cdr yank-menu)))))
 976   (if (> (length (cdr yank-menu)) kill-ring-max)
 977       (setcdr (nthcdr kill-ring-max yank-menu) nil)))
 978
 979 (put 'menu-bar-select-yank 'apropos-inhibit t)
 980 (defun menu-bar-select-yank ()
 981   (interactive "*")
 982   (push-mark (point))
 983   (insert last-command-event))
 984 \f
 985 (defvar list-buffers-directory nil)
 986
 987 (defvar menu-bar-update-buffers-maxbuf)
 988
 989 (defun menu-bar-select-buffer ()
 990   (interactive)
 991   (switch-to-buffer last-command-event))
 992
 993 (defun menu-bar-select-frame ()
 994   (interactive)
 995   (make-frame-visible last-command-event)
 996   (raise-frame last-command-event)
 997   (select-frame last-command-event))
 998
 999 (defun menu-bar-update-buffers-1 (elt)
1000   (cons (format
1001          (format "%%%ds  %%s%%s  %%s" menu-bar-update-buffers-maxbuf)
1002          (cdr elt)
1003          (if (buffer-modified-p (car elt))
1004              "*" " ")
1005          (save-excursion
1006            (set-buffer (car elt))
1007            (if buffer-read-only "%" " "))
1008          (let ((file
1009                 (or (buffer-file-name (car elt))
1010                     (save-excursion
1011                       (set-buffer (car elt))
1012                       list-buffers-directory)
1013                     "")))
1014            (setq file (or (file-name-directory file)
1015                           ""))
1016            (if (> (length file) 20)
1017                (setq file (concat "..." (substring file -17))))
1018            file))
1019         (car elt)))
1020
1021 (defvar menu-bar-buffers-menu-list-buffers-entry nil)
1022
1023 (defun menu-bar-update-buffers ()
1024   ;; If user discards the Buffers item, play along.
1025   (and (lookup-key (current-global-map) [menu-bar buffer])
1026        (frame-or-buffer-changed-p)
1027        (let ((buffers (buffer-list))
1028              (frames (frame-list))
1029              (maxlen 0)
1030              buffers-menu frames-menu)
1031          ;; If requested, list only the N most recently selected buffers.
1032          (if (and (integerp buffers-menu-max-size)
1033                   (> buffers-menu-max-size 1))
1034              (if (> (length buffers) buffers-menu-max-size)
1035                  (setcdr (nthcdr buffers-menu-max-size buffers) nil)))
1036
1037          ;; Make the menu of buffers proper.
1038          (setq buffers-menu
1039                (cons "Select Buffer"
1040                      (let* ((buffer-list
1041                              (mapcar 'list buffers))
1042                             tail
1043                             (menu-bar-update-buffers-maxbuf 0)
1044                             alist
1045                             head)
1046                        ;; Put into each element of buffer-list
1047                        ;; the name for actual display,
1048                        ;; perhaps truncated in the middle.
1049                        (setq tail buffer-list)
1050                        (while tail
1051                          (let ((name (buffer-name (car (car tail)))))
1052                            (setcdr (car tail)
1053                                    (if (> (length name) 27)
1054                                        (concat (substring name 0 12)
1055                                                "..."
1056                                                (substring name -12))
1057                                      name)))
1058                          (setq tail (cdr tail)))
1059                        ;; Compute the maximum length of any name.
1060                        (setq tail buffer-list)
1061                        (while tail
1062                          (or (eq ?\ (aref (cdr (car tail)) 0))
1063                              (setq menu-bar-update-buffers-maxbuf
1064                                    (max menu-bar-update-buffers-maxbuf
1065                                         (length (cdr (car tail))))))
1066                          (setq tail (cdr tail)))
1067                        ;; Set ALIST to an alist of the form
1068                        ;; ITEM-STRING . BUFFER
1069                        (setq tail buffer-list)
1070                        (while tail
1071                          (let ((elt (car tail)))
1072                            (or (eq ?\ (aref (cdr elt) 0))
1073                                (setq alist (cons
1074                                             (menu-bar-update-buffers-1 elt)
1075                                             alist)))
1076                            (and alist (> (length (car (car alist))) maxlen)
1077                                 (setq maxlen (length (car (car alist))))))
1078                          (setq tail (cdr tail)))
1079                        (setq alist (nreverse alist))
1080                        ;; Make the menu item for list-buffers
1081                        ;; or reuse the one we already have.
1082                        ;; The advantage in reusing one
1083                        ;; is that it already has the keyboard equivalent
1084                        ;; cached, so we save the time to look that up again.
1085                        (or menu-bar-buffers-menu-list-buffers-entry
1086                            (setq menu-bar-buffers-menu-list-buffers-entry
1087                                  (cons
1088                                   'list-buffers
1089                                   (cons
1090                                    ""
1091                                    'list-buffers))))
1092                        ;; Update the item string for menu's new width.
1093                        (setcar (cdr menu-bar-buffers-menu-list-buffers-entry)
1094                                (concat (make-string (max (- (/ maxlen 2) 8) 0)
1095                                                     ?\ )
1096                                        "List All Buffers"))
1097                        ;; Now make the actual list of items,
1098                        ;; ending with the list-buffers item.
1099                        (nconc (mapcar (lambda (pair)
1100                                         ;; This is somewhat risque, to use
1101                                         ;; the buffer name itself as the event
1102                                         ;; type to define, but it works.
1103                                         ;; It would not work to use the buffer
1104                                         ;; since a buffer as an event has its
1105                                         ;; own meaning.
1106                                         (nconc (list (buffer-name (cdr pair))
1107                                                      (car pair)
1108                                                      (cons nil nil))
1109                                                'menu-bar-select-buffer))
1110                                       alist)
1111                               (list menu-bar-buffers-menu-list-buffers-entry)))))
1112
1113
1114          ;; Make a Frames menu if we have more than one frame.
1115          (if (cdr frames)
1116              (let ((name (concat (make-string (max (- (/ maxlen 2) 3) 0)
1117                                               ?\ )
1118                                  "Frames"))
1119                    (frames-menu
1120                     (cons 'keymap
1121                           (cons "Select Frame"
1122                                 (mapcar
1123                                  (lambda (frame)
1124                                    (nconc
1125                                     (list frame
1126                                           (frame-parameter frame 'name)
1127                                           (cons nil nil))
1128                                           'menu-bar-select-frame))
1129                                         frames)))))
1130                ;; Put it underneath the Buffers menu.
1131                (setq buffers-menu (cons (cons 'frames (cons name frames-menu))
1132                                         buffers-menu))))
1133          (if buffers-menu
1134              (setq buffers-menu (cons 'keymap buffers-menu)))
1135          (define-key (current-global-map) [menu-bar buffer]
1136            (cons "Buffers" buffers-menu)))))
1137
1138 (add-hook 'menu-bar-update-hook 'menu-bar-update-buffers)
1139
1140 (menu-bar-update-buffers)
1141
1142 ;; this version is too slow
1143 ;;;(defun format-buffers-menu-line (buffer)
1144 ;;;  "Returns a string to represent the given buffer in the Buffer menu.
1145 ;;;nil means the buffer shouldn't be listed.  You can redefine this."
1146 ;;;  (if (string-match "\\` " (buffer-name buffer))
1147 ;;;      nil
1148 ;;;    (save-excursion
1149 ;;;     (set-buffer buffer)
1150 ;;;     (let ((size (buffer-size)))
1151 ;;;       (format "%s%s %-19s %6s %-15s %s"
1152 ;;;            (if (buffer-modified-p) "*" " ")
1153 ;;;            (if buffer-read-only "%" " ")
1154 ;;;            (buffer-name)
1155 ;;;            size
1156 ;;;            mode-name
1157 ;;;            (or (buffer-file-name) ""))))))
1158 \f
1159 ;;; Set up a menu bar menu for the minibuffer.
1160
1161 (dolist (map (list minibuffer-local-ns-map
1162                    minibuffer-local-must-match-map
1163                    minibuffer-local-isearch-map
1164                    minibuffer-local-map
1165                    minibuffer-local-completion-map))
1166   (define-key map [menu-bar minibuf]
1167     (cons "Minibuf" (make-sparse-keymap "Minibuf"))))
1168
1169 (dolist (map (list minibuffer-local-must-match-map
1170                    minibuffer-local-completion-map))
1171   (define-key map [menu-bar minibuf ?\?]
1172     (list 'menu-item "List Completions" 'minibuffer-completion-help
1173           :help "Display all possible completions"))
1174   (define-key map [menu-bar minibuf space]
1175     (list 'menu-item "Complete Word" 'minibuffer-complete-word
1176           :help "Complete at most one word"))
1177   (define-key map [menu-bar minibuf tab]
1178     (list 'menu-item "Complete" 'minibuffer-complete
1179           :help "Complete as far as possible")))
1180
1181 (dolist (map (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   (define-key map [menu-bar minibuf quit]
1187     (list 'menu-item "Quit" 'keyboard-escape-quit
1188           :help "Abort input and exit minibuffer"))
1189   (define-key map [menu-bar minibuf return]
1190     (list 'menu-item "Enter" 'exit-minibuffer
1191           :help "Terminate input and exit minibuffer")))
1192 \f
1193 (defcustom menu-bar-mode nil
1194   "Toggle display of a menu bar on each frame.
1195 Setting this variable directly does not take effect;
1196 use either \\[customize] or the function `menu-bar-mode'."
1197   :set (lambda (symbol value)
1198          (menu-bar-mode (or value 0)))
1199   :initialize 'custom-initialize-default
1200   :type 'boolean
1201   :group 'frames)
1202
1203 (defun menu-bar-mode (flag)
1204   "Toggle display of a menu bar on each frame.
1205 This command applies to all frames that exist and frames to be
1206 created in the future.
1207 With a numeric argument, if the argument is positive,
1208 turn on menu bars; otherwise, turn off menu bars."
1209  (interactive "P")
1210
1211   ;; Make menu-bar-mode and default-frame-alist consistent.
1212   (let ((default (assq 'menu-bar-lines default-frame-alist)))
1213     (if default
1214         (setq menu-bar-mode (not (eq (cdr default) 0)))
1215       (setq default-frame-alist
1216             (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
1217                   default-frame-alist))))
1218
1219   ;; Toggle or set the mode, according to FLAG.
1220  (setq menu-bar-mode (if (null flag) (not menu-bar-mode)
1221                        (> (prefix-numeric-value flag) 0)))
1222
1223  ;; Apply it to default-frame-alist.
1224  (let ((parameter (assq 'menu-bar-lines default-frame-alist)))
1225    (if (consp parameter)
1226        (setcdr parameter (if menu-bar-mode 1 0))
1227      (setq default-frame-alist
1228            (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
1229                  default-frame-alist))))
1230
1231  ;; Apply it to existing frames.
1232  (let ((frames (frame-list)))
1233    (while frames
1234      (let ((height (cdr (assq 'height (frame-parameters (car frames))))))
1235        (modify-frame-parameters (car frames)
1236                                 (list (cons 'menu-bar-lines
1237                                           (if menu-bar-mode 1 0))))
1238        (modify-frame-parameters (car frames)
1239                                 (list (cons 'height height))))
1240      (setq frames (cdr frames)))))
1241
1242 (provide 'menu-bar)
1243
1244 ;;; menu-bar.el ends here