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+;;; Menubar support.
+;; Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+;; First, emulate the Lucid menubar support in GNU Emacs 19.
+
+;; Arrange to use current-menubar to set up part of the menu bar.
+
+(setq recompute-lucid-menubar 'recompute-lucid-menubar)
+(defun recompute-lucid-menubar ()
+ (define-key lucid-menubar-map [menu-bar]
+ (condition-case nil
+ (make-lucid-menu-keymap "menu-bar" current-menubar)
+ (error (message "Invalid data in current-menubar moved to lucid-failing-menubar")
+ (sit-for 1)
+ (setq lucid-failing-menubar current-menubar
+ current-menubar nil))))
+ (setq lucid-menu-bar-dirty-flag nil))
+
+(defvar lucid-menubar-map (make-sparse-keymap))
+(or (assq 'current-menubar minor-mode-map-alist)
+ (setq minor-mode-map-alist
+ (cons (cons 'current-menubar lucid-menubar-map)
+ minor-mode-map-alist)))
+
+(defun set-menubar-dirty-flag ()
+ (force-mode-line-update)
+ (setq lucid-menu-bar-dirty-flag t))
+
+(defvar add-menu-item-count 0)
+
+;; Return a menu keymap corresponding to a Lucid-style menu list
+;; MENU-ITEMS, and with name MENU-NAME.
+(defun make-lucid-menu-keymap (menu-name menu-items)
+ (let ((menu (make-sparse-keymap menu-name)))
+ ;; Process items in reverse order,
+ ;; since the define-key loop reverses them again.
+ (setq menu-items (reverse menu-items))
+ (while menu-items
+ (let* ((item (car menu-items))
+ (callback (if (vectorp item) (aref item 1)))
+ command enabler name)
+ (cond ((stringp item)
+ (setq command nil)
+ (setq name item))
+ ((consp item)
+ (setq command (make-lucid-menu-keymap (car item) (cdr item)))
+ (setq name (car item)))
+ ((vectorp item)
+ (setq command (make-symbol (format "menu-function-%d"
+ add-menu-item-count)))
+ (setq enabler (make-symbol (format "menu-function-%d-enabler"
+ add-menu-item-count)))
+ (setq add-menu-item-count (1+ add-menu-item-count))
+ (put command 'menu-enable enabler)
+ (set enabler (aref item 2))
+ (setq name (aref item 0))
+ (if (symbolp callback)
+ (fset command callback)
+ (fset command (list 'lambda () '(interactive) callback)))))
+ (if name
+ (define-key menu (vector (intern name)) (cons name command))))
+ (setq menu-items (cdr menu-items)))
+ menu))
+
+(defun popup-menu (menu-desc)
+ "Pop up the given menu.
+A menu is a list of menu items, strings, and submenus.
+
+The first element of a menu must be a string, which is the name of the
+menu. This is the string that will be displayed in the parent menu, if
+any. For toplevel menus, it is ignored. This string is not displayed
+in the menu itself.
+
+A menu item is a vector of three or four elements:
+
+ - the name of the menu item (a string);
+ - the `callback' of that item;
+ - whether this item is active (selectable);
+ - and an optional string to append to the name.
+
+If the `callback' of a menu item is a symbol, then it must name a command.
+It will be invoked with `call-interactively'. If it is a list, then it is
+evaluated with `eval'.
+
+The fourth element of a menu item is a convenient way of adding the name
+of a command's ``argument'' to the menu, like ``Kill Buffer NAME''.
+
+If an element of a menu is a string, then that string will be presented in
+the menu as unselectable text.
+
+If an element of a menu is a string consisting solely of hyphens, then that
+item will be presented as a solid horizontal line.
+
+If an element of a menu is a list, it is treated as a submenu. The name of
+that submenu (the first element in the list) will be used as the name of the
+item representing this menu on the parent.
+
+The syntax, more precisely:
+
+ form := <something to pass to `eval'>
+ command := <a symbol or string, to pass to `call-interactively'>
+ callback := command | form
+ active-p := <t or nil, whether this thing is selectable>
+ text := <string, non selectable>
+ name := <string>
+ argument := <string>
+ menu-item := '[' name callback active-p [ argument ] ']'
+ menu := '(' name [ menu-item | menu | text ]+ ')'
+"
+ (let ((menu (make-lucid-menu-keymap (car menu-desc) (cdr menu-desc)))
+ (pos (mouse-position))
+ answer)
+ (setq answer (x-popup-menu (list (list (nth 1 pos) (nthcdr 2 pos))
+ (car pos))
+ menu))
+ (setq cmd (lookup-key menu (vector answer)))
+ (if cmd (call-interactively cmd))))
+
+(defconst default-menubar
+ '(("File" ["New Frame" x-new-frame t]
+ ["Open File..." find-file t]
+ ["Save Buffer" save-buffer t nil]
+ ["Save Buffer As..." write-file t]
+ ["Revert Buffer" revert-buffer t nil]
+ "-----"
+ ["Print Buffer" lpr-buffer t nil]
+ "-----"
+ ["Delete Frame" delete-frame t]
+;; ["Kill Buffer..." kill-buffer t]
+ ["Kill Buffer" kill-this-buffer t nil]
+ ["Exit Emacs" save-buffers-kill-emacs t]
+ )
+ ("Edit" ["Undo" advertised-undo t]
+ ["Cut" x-kill-primary-selection t]
+ ["Copy" x-copy-primary-selection t]
+ ["Paste" x-yank-clipboard-selection t]
+ ["Clear" x-delete-primary-selection t]
+ )
+ ("Buffers" "")
+
+ nil ; the partition: menus after this are flushright
+
+ ("Help" ["Info" info t]
+ ["Describe Mode" describe-mode t]
+ ["Command Apropos..." command-apropos t]
+ ["List Keybindings" describe-bindings t]
+ ["Describe Key..." describe-key t]
+ ["Describe Function..." describe-function t]
+ ["Describe Variable..." describe-variable t]
+ "-----"
+ ["Man..." manual-entry t]
+ ["Emacs Tutorial" help-with-tutorial t]
+ ["Emacs News" view-emacs-news t]
+ )
+ ))
+
+
+(defun kill-this-buffer () ; for the menubar
+ "Kills the current buffer."
+ (interactive)
+ (kill-buffer (current-buffer)))
+
+(defun x-new-frame (&optional frame-name)
+ "Creates a new Emacs frame (that is, a new X window.)"
+ (interactive)
+ (select-frame (x-create-frame
+ (append (if frame-name
+ (list (cons 'name frame-name))
+ nil)
+ frame-default-alist)))
+ (switch-to-buffer (get-buffer-create "*scratch*"))
+ )
+
+(defun set-menubar (menubar)
+ "Set the default menubar to be menubar."
+ (setq-default current-menubar (copy-sequence menubar))
+ (set-menubar-dirty-flag))
+
+(defun set-buffer-menubar (menubar)
+ "Set the buffer-local menubar to be menubar."
+ (make-local-variable 'current-menubar)
+ (setq current-menubar (copy-sequence menubar))
+ (set-menubar-dirty-flag))
+
+
+;;; menu manipulation functions
+
+(defun find-menu-item (menubar item-path-list &optional parent)
+ "Searches MENUBAR for item given by ITEM-PATH-LIST.
+Returns (ITEM . PARENT), where PARENT is the immediate parent of
+ the item found.
+Signals an error if the item is not found."
+ (or parent (setq item-path-list (mapcar 'downcase item-path-list)))
+ (if (not (consp menubar))
+ nil
+ (let ((rest menubar)
+ result)
+ (while rest
+ (if (and (car rest)
+ (equal (car item-path-list)
+ (downcase (if (vectorp (car rest))
+ (aref (car rest) 0)
+ (if (stringp (car rest))
+ (car rest)
+ (car (car rest)))))))
+ (setq result (car rest) rest nil)
+ (setq rest (cdr rest))))
+ (if (cdr item-path-list)
+ (if (consp result)
+ (find-menu-item (cdr result) (cdr item-path-list) result)
+ (if result
+ (signal 'error (list "not a submenu" result))
+ (signal 'error (list "no such submenu" (car item-path-list)))))
+ (cons result parent)))))
+
+
+(defun disable-menu-item (path)
+ "Make the named menu item be unselectable.
+PATH is a list of strings which identify the position of the menu item in
+the menu hierarchy. (\"File\" \"Save\") means the menu item called \"Save\"
+under the toplevel \"File\" menu. (\"Menu\" \"Foo\" \"Item\") means the
+menu item called \"Item\" under the \"Foo\" submenu of \"Menu\"."
+ (let* ((menubar current-menubar)
+ (pair (find-menu-item menubar path))
+ (item (car pair))
+ (menu (cdr pair)))
+ (or item
+ (signal 'error (list (if menu "No such menu item" "No such menu")
+ path)))
+ (if (consp item) (error "can't disable menus, only menu items"))
+ (aset item 2 nil)
+ (set-menubar-dirty-flag)
+ item))
+
+
+(defun enable-menu-item (path)
+ "Make the named menu item be selectable.
+PATH is a list of strings which identify the position of the menu item in
+the menu hierarchy. (\"File\" \"Save\") means the menu item called \"Save\"
+under the toplevel \"File\" menu. (\"Menu\" \"Foo\" \"Item\") means the
+menu item called \"Item\" under the \"Foo\" submenu of \"Menu\"."
+ (let* ((menubar current-menubar)
+ (pair (find-menu-item menubar path))
+ (item (car pair))
+ (menu (cdr pair)))
+ (or item
+ (signal 'error (list (if menu "No such menu item" "No such menu")
+ path)))
+ (if (consp item) (error "%S is a menu, not a menu item" path))
+ (aset item 2 t)
+ (set-menubar-dirty-flag)
+ item))
+
+
+(defun add-menu-item-1 (item-p menu-path item-name item-data enabled-p before)
+ (if before (setq before (downcase before)))
+ (let* ((menubar current-menubar)
+ (menu (condition-case ()
+ (car (find-menu-item menubar menu-path))
+ (error nil)))
+ (item (if (listp menu)
+ (car (find-menu-item (cdr menu) (list item-name)))
+ (signal 'error (list "not a submenu" menu-path)))))
+ (or menu
+ (let ((rest menu-path)
+ (so-far menubar))
+ (while rest
+;;; (setq menu (car (find-menu-item (cdr so-far) (list (car rest)))))
+ (setq menu
+ (if (eq so-far menubar)
+ (car (find-menu-item so-far (list (car rest))))
+ (car (find-menu-item (cdr so-far) (list (car rest))))))
+ (or menu
+ (let ((rest2 so-far))
+ (while (and (cdr rest2) (car (cdr rest2)))
+ (setq rest2 (cdr rest2)))
+ (setcdr rest2
+ (nconc (list (setq menu (list (car rest))))
+ (cdr rest2)))))
+ (setq so-far menu)
+ (setq rest (cdr rest)))))
+ (or menu (setq menu menubar))
+ (if item
+ nil ; it's already there
+ (if item-p
+ (setq item (vector item-name item-data enabled-p))
+ (setq item (cons item-name item-data)))
+ ;; if BEFORE is specified, try to add it there.
+ (if before
+ (setq before (car (find-menu-item menu (list before)))))
+ (let ((rest menu)
+ (added-before nil))
+ (while rest
+ (if (eq before (car (cdr rest)))
+ (progn
+ (setcdr rest (cons item (cdr rest)))
+ (setq rest nil added-before t))
+ (setq rest (cdr rest))))
+ (if (not added-before)
+ ;; adding before the first item on the menubar itself is harder
+ (if (and (eq menu menubar) (eq before (car menu)))
+ (setq menu (cons item menu)
+ current-menubar menu)
+ ;; otherwise, add the item to the end.
+ (nconc menu (list item))))))
+ (if item-p
+ (progn
+ (aset item 1 item-data)
+ (aset item 2 (not (null enabled-p))))
+ (setcar item item-name)
+ (setcdr item item-data))
+ (set-menubar-dirty-flag)
+ item))
+
+(defun add-menu-item (menu-path item-name function enabled-p &optional before)
+ "Add a menu item to some menu, creating the menu first if necessary.
+If the named item exists already, it is changed.
+MENU-PATH identifies the menu under which the new menu item should be inserted.
+ It is a list of strings; for example, (\"File\") names the top-level \"File\"
+ menu. (\"File\" \"Foo\") names a hypothetical submenu of \"File\".
+ITEM-NAME is the string naming the menu item to be added.
+FUNCTION is the command to invoke when this menu item is selected.
+ If it is a symbol, then it is invoked with `call-interactively', in the same
+ way that functions bound to keys are invoked. If it is a list, then the
+ list is simply evaluated.
+ENABLED-P controls whether the item is selectable or not.
+BEFORE, if provided, is the name of a menu item before which this item should
+ be added, if this item is not on the menu already. If the item is already
+ present, it will not be moved."
+ (or menu-path (error "must specify a menu path"))
+ (or item-name (error "must specify an item name"))
+ (add-menu-item-1 t menu-path item-name function enabled-p before))
+
+
+(defun delete-menu-item (path)
+ "Remove the named menu item from the menu hierarchy.
+PATH is a list of strings which identify the position of the menu item in
+the menu hierarchy. (\"File\" \"Save\") means the menu item called \"Save\"
+under the toplevel \"File\" menu. (\"Menu\" \"Foo\" \"Item\") means the
+menu item called \"Item\" under the \"Foo\" submenu of \"Menu\"."
+ (let* ((menubar current-menubar)
+ (pair (find-menu-item menubar path))
+ (item (car pair))
+ (menu (or (cdr pair) menubar)))
+ (if (not item)
+ nil
+ ;; the menubar is the only special case, because other menus begin
+ ;; with their name.
+ (if (eq menu current-menubar)
+ (setq current-menubar (delq item menu))
+ (delq item menu))
+ (set-menubar-dirty-flag)
+ item)))
+
+
+(defun relabel-menu-item (path new-name)
+ "Change the string of the specified menu item.
+PATH is a list of strings which identify the position of the menu item in
+the menu hierarchy. (\"File\" \"Save\") means the menu item called \"Save\"
+under the toplevel \"File\" menu. (\"Menu\" \"Foo\" \"Item\") means the
+menu item called \"Item\" under the \"Foo\" submenu of \"Menu\".
+NEW-NAME is the string that the menu item will be printed as from now on."
+ (or (stringp new-name)
+ (setq new-name (signal 'wrong-type-argument (list 'stringp new-name))))
+ (let* ((menubar current-menubar)
+ (pair (find-menu-item menubar path))
+ (item (car pair))
+ (menu (cdr pair)))
+ (or item
+ (signal 'error (list (if menu "No such menu item" "No such menu")
+ path)))
+ (if (and (consp item)
+ (stringp (car item)))
+ (setcar item new-name)
+ (aset item 0 new-name))
+ (set-menubar-dirty-flag)
+ item))
+
+(defun add-menu (menu-path menu-name menu-items &optional before)
+ "Add a menu to the menubar or one of its submenus.
+If the named menu exists already, it is changed.
+MENU-PATH identifies the menu under which the new menu should be inserted.
+ It is a list of strings; for example, (\"File\") names the top-level \"File\"
+ menu. (\"File\" \"Foo\") names a hypothetical submenu of \"File\".
+ If MENU-PATH is nil, then the menu will be added to the menubar itself.
+MENU-NAME is the string naming the menu to be added.
+MENU-ITEMS is a list of menu item descriptions.
+ Each menu item should be a vector of three elements:
+ - a string, the name of the menu item;
+ - a symbol naming a command, or a form to evaluate;
+ - and t or nil, whether this item is selectable.
+BEFORE, if provided, is the name of a menu before which this menu should
+ be added, if this menu is not on its parent already. If the menu is already
+ present, it will not be moved."
+ (or menu-name (error "must specify a menu name"))
+ (or menu-items (error "must specify some menu items"))
+ (add-menu-item-1 nil menu-path menu-name menu-items t before))
+
+
+
+(defvar put-buffer-names-in-file-menu t)
+
+(defun sensitize-file-and-edit-menus-hook ()
+ "For use as a value of activate-menubar-hook.
+This function changes the sensitivity of these File and Edit menu items:
+
+ Cut sensitive only when emacs owns the primary X Selection.
+ Copy sensitive only when emacs owns the primary X Selection.
+ Clear sensitive only when emacs owns the primary X Selection.
+ Paste sensitive only when there is an owner for the X Clipboard Selection.
+ Undo sensitive only when there is undo information.
+ While in the midst of an undo, this is changed to \"Undo More\".
+
+ Kill Buffer has the name of the current buffer appended to it.
+ Print Buffer has the name of the current buffer appended to it.
+ Save Buffer has the name of the current buffer appended to it, and is
+ sensitive only when the current buffer is modified.
+ Revert Buffer has the name of the current buffer appended to it, and is
+ sensitive only when the current buffer has a file.
+ Delete Frame sensitive only when there is more than one visible frame."
+ ;;
+ ;; the hair in here to not update the menubar unless something has changed
+ ;; isn't really necessary (the menubar code is fast enough) but it makes
+ ;; me feel better (and creates marginally less list garbage.)
+ (let* ((file-menu (cdr (car (find-menu-item current-menubar '("File")))))
+ (edit-menu (cdr (car (find-menu-item current-menubar '("Edit")))))
+ (save (car (find-menu-item file-menu '("Save Buffer"))))
+ (rvt (car (find-menu-item file-menu '("Revert Buffer"))))
+ (del (car (find-menu-item file-menu '("Delete Frame"))))
+ (print (car (find-menu-item file-menu '("Print Buffer"))))
+ (kill (car (find-menu-item file-menu '("Kill Buffer"))))
+ (cut (car (find-menu-item edit-menu '("Cut"))))
+ (copy (car (find-menu-item edit-menu '("Copy"))))
+ (paste (car (find-menu-item edit-menu '("Paste"))))
+ (clear (car (find-menu-item edit-menu '("Clear"))))
+ (undo (or (car (find-menu-item edit-menu '("Undo")))
+ (car (find-menu-item edit-menu '("Undo More")))))
+ (name (buffer-name))
+ (emacs-owns-selection-p (x-selection-owner-p))
+ (clipboard-exists-p (x-selection-exists-p 'CLIPBOARD))
+ undo-available undoing-more
+ (undo-info-available (not (null (and (not (eq t buffer-undo-list))
+ (if (eq last-command 'undo)
+ (setq undoing-more
+ (and (boundp 'pending-undo-list)
+ pending-undo-list)
+ buffer-undo-list))))))
+ undo-name undo-state
+ (change-p
+ (or (and cut (not (eq emacs-owns-selection-p (aref cut 2))))
+ (and copy (not (eq emacs-owns-selection-p (aref copy 2))))
+ (and clear (not (eq emacs-owns-selection-p (aref clear 2))))
+ (and paste (not (eq clipboard-exists-p (aref paste 2))))
+ (and save (not (eq (buffer-modified-p) (aref save 2))))
+ (and rvt (not (eq (not (not buffer-file-name)) (aref rvt 2))))
+ (and del (not (eq (null (cdr (visible-frame-list))) (aref del 2))))
+ )))
+ (if (not put-buffer-names-in-file-menu)
+ nil
+ (if (= (length save) 4) (progn (aset save 3 name) (setq change-p t)))
+ (if (= (length rvt) 4) (progn (aset rvt 3 name) (setq change-p t)))
+ (if (= (length print) 4) (progn (aset print 3 name) (setq change-p t)))
+ (if (= (length kill) 4) (progn (aset kill 3 name) (setq change-p t))))
+ (if save (aset save 2 (buffer-modified-p)))
+ (if rvt (aset rvt 2 (not (not buffer-file-name))))
+ (if del (aset del 2 (null (cdr (visible-frame-list)))))
+ (if cut (aset cut 2 emacs-owns-selection-p))
+ (if copy (aset copy 2 emacs-owns-selection-p))
+ (if clear (aset clear 2 emacs-owns-selection-p))
+ (if paste (aset paste 2 clipboard-exists-p))
+
+ ;; we could also do this with the third field of the item.
+ (if (eq last-command 'undo)
+ (setq undo-name "Undo More"
+ undo-state (not (null (and (boundp 'pending-undo-list)
+ pending-undo-list))))
+ (setq undo-name "Undo"
+ undo-state (and (not (eq buffer-undo-list t))
+ (not (null
+ (or buffer-undo-list
+ (and (boundp 'pending-undo-list)
+ pending-undo-list)))))))
+ (if buffer-read-only (setq undo-state nil))
+ (if (and undo
+ (or (not (equal undo-name (aref undo 0)))
+ (not (eq undo-state (aref undo 2)))))
+ (progn (aset undo 0 undo-name)
+ (aset undo 2 undo-state)
+ (setq change-p t)))
+ ;; if we made any changes, return nil
+ ;; otherwise return t to indicate that we haven't done anything.
+ (not change-p)))
+
+;; this version is too slow
+(defun format-buffers-menu-line (buffer)
+ "Returns a string to represent the given buffer in the Buffer menu.
+nil means the buffer shouldn't be listed. You can redefine this."
+ (if (string-match "\\` " (buffer-name buffer))
+ nil
+ (save-excursion
+ (set-buffer buffer)
+ (let ((size (buffer-size)))
+ (format "%s%s %-19s %6s %-15s %s"
+ (if (buffer-modified-p) "*" " ")
+ (if buffer-read-only "%" " ")
+ (buffer-name)
+ size
+ mode-name
+ (or (buffer-file-name) ""))))))
+
+(defun format-buffers-menu-line (buffer)
+ (if (string-match "\\` " (setq buffer (buffer-name buffer)))
+ nil
+ buffer))
+
+(defvar buffers-menu-max-size 10
+ "*Maximum number of entries which may appear on the \"Buffers\" menu.
+If this is 10, then only the ten most-recently-selected buffers will be
+shown. If this is nil, then all buffers will be shown. Setting this to
+a large number or nil will slow down menu responsiveness.")
+
+(defvar complex-buffers-menu-p nil
+ "*If true, the buffers menu will contain several commands, as submenus
+of each buffer line. If this is false, then there will be only one command:
+select that buffer.")
+
+(defvar buffers-menu-switch-to-buffer-function 'switch-to-buffer
+ "*The function to call to select a buffer from the buffers menu.
+`switch-to-buffer' is a good choice, as is `pop-to-buffer'.")
+
+
+(defun buffer-menu-save-buffer (buffer)
+ (save-excursion
+ (set-buffer buffer)
+ (save-buffer)))
+
+(defun buffer-menu-write-file (buffer)
+ (save-excursion
+ (set-buffer buffer)
+ (write-file (read-file-name
+ (concat "Write " (buffer-name (current-buffer))
+ " to file: ")))))
+
+
+(defsubst build-buffers-menu-internal (buffers)
+ (let (name line)
+ (mapcar
+ (if complex-buffers-menu-p
+ (function
+ (lambda (buffer)
+ (if (setq line (format-buffers-menu-line buffer))
+ (list line
+ (vector "Switch to Buffer"
+ (list buffers-menu-switch-to-buffer-function
+ (setq name (buffer-name buffer)))
+ t)
+ (if (and (buffer-modified-p buffer)
+ (buffer-file-name buffer))
+ (vector "Save Buffer"
+ (list 'buffer-menu-save-buffer name) t)
+ ["Save Buffer" nil nil])
+ (vector "Save Buffer As..."
+ (list 'buffer-menu-write-file name) t)
+ (vector "Kill Buffer" (list 'kill-buffer name) t)))))
+ (function (lambda (buffer)
+ (if (setq line (format-buffers-menu-line buffer))
+ (vector line
+ (list buffers-menu-switch-to-buffer-function
+ (buffer-name buffer))
+ t)))))
+ buffers)))
+
+(defun build-buffers-menu-hook ()
+ "For use as a value of activate-menubar-hook.
+This function changes the contents of the \"Buffers\" menu to correspond
+to the current set of buffers. Only the most-recently-used few buffers
+will be listed on the menu, for efficiency reasons. You can control how
+many buffers will be shown by setting `buffers-menu-max-size'.
+You can control the text of the menu items by redefining the function
+`format-buffers-menu-line'."
+ (let ((buffer-menu (car (find-menu-item current-menubar '("Buffers"))))
+ name
+ buffers)
+ (if (not buffer-menu)
+ nil
+ (setq buffers (buffer-list))
+
+ (if (and (integerp buffers-menu-max-size)
+ (> buffers-menu-max-size 1))
+ (if (> (length buffers) buffers-menu-max-size)
+ (setcdr (nthcdr buffers-menu-max-size buffers) nil)))
+
+ (setq buffers (build-buffers-menu-internal buffers))
+ (setq buffers (nconc (delq nil buffers)
+ '("----" ["List All Buffers" list-buffers t])))
+ ;; slightly (only slightly) more efficient to not install the menubar
+ ;; if it hasn't visibly changed.
+ (if (equal buffers (cdr buffer-menu))
+ t ; return t meaning "no change"
+ (setcdr buffer-menu buffers)
+ (set-menubar-dirty-flag)
+ nil))))
+
+(add-hook 'activate-menubar-hook 'build-buffers-menu-hook)
+(add-hook 'activate-menubar-hook 'sensitize-file-and-edit-menus-hook)
+
+(let ((frames (frame-list)))
+ (while frames
+ (modify-frame-parameters (car frames) '((menu-bar-lines . 1)))
+ (setq frames (cdr frames))))
+(or (assq 'menu-bar-lines default-frame-alist)
+ (setq default-frame-alist
+ (cons '(menu-bar-lines . 1) default-frame-alist)))
+
+(set-menubar default-menubar)
+
+(provide 'menubar)
+
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-20 18:56:07 +0000