mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-30 08:09:04 +00:00
848 lines
30 KiB
EmacsLisp
848 lines
30 KiB
EmacsLisp
;;; buff-menu.el --- buffer menu main function and support functions -*- coding:utf-8 -*-
|
||
|
||
;; Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 2000, 2001, 2002, 2003,
|
||
;; 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
|
||
|
||
;; Maintainer: FSF
|
||
;; Keywords: convenience
|
||
|
||
;; 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 3, 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, Inc., 51 Franklin Street, Fifth Floor,
|
||
;; Boston, MA 02110-1301, USA.
|
||
|
||
;;; Commentary:
|
||
|
||
;; Edit, delete, or change attributes of all currently active Emacs
|
||
;; buffers from a list summarizing their state. A good way to browse
|
||
;; any special or scratch buffers you have loaded, since you can't find
|
||
;; them by filename. The single entry point is `list-buffers',
|
||
;; normally bound to C-x C-b.
|
||
|
||
;;; Change Log:
|
||
|
||
;; Buffer-menu-view: New function
|
||
;; Buffer-menu-view-other-window: New function
|
||
|
||
;; Merged by esr with recent mods to Emacs 19 buff-menu, 23 Mar 1993
|
||
;;
|
||
;; Modified by Bob Weiner, Motorola, Inc., 4/14/89
|
||
;;
|
||
;; Added optional backup argument to 'Buffer-menu-unmark' to make it undelete
|
||
;; current entry and then move to previous one.
|
||
;;
|
||
;; Based on FSF code dating back to 1985.
|
||
|
||
;;; Code:
|
||
|
||
;;Trying to preserve the old window configuration works well in
|
||
;;simple scenarios, when you enter the buffer menu, use it, and exit it.
|
||
;;But it does strange things when you switch back to the buffer list buffer
|
||
;;with C-x b, later on, when the window configuration is different.
|
||
;;The choice seems to be, either restore the window configuration
|
||
;;in all cases, or in no cases.
|
||
;;I decided it was better not to restore the window config at all. -- rms.
|
||
|
||
;;But since then, I changed buffer-menu to use the selected window,
|
||
;;so q now once again goes back to the previous window configuration.
|
||
|
||
;;(defvar Buffer-menu-window-config nil
|
||
;; "Window configuration saved from entry to `buffer-menu'.")
|
||
|
||
;; Put buffer *Buffer List* into proper mode right away
|
||
;; so that from now on even list-buffers is enough to get a buffer menu.
|
||
|
||
(defgroup Buffer-menu nil
|
||
"Show a menu of all buffers in a buffer."
|
||
:group 'tools
|
||
:group 'convenience)
|
||
|
||
(defcustom Buffer-menu-use-header-line t
|
||
"*Non-nil means to use an immovable header-line."
|
||
:type 'boolean
|
||
:group 'Buffer-menu)
|
||
|
||
(defface buffer-menu-buffer
|
||
'((t (:weight bold)))
|
||
"Face used to highlight buffer names in the buffer menu."
|
||
:group 'Buffer-menu)
|
||
(put 'Buffer-menu-buffer 'face-alias 'buffer-menu-buffer)
|
||
|
||
(defcustom Buffer-menu-buffer+size-width 26
|
||
"*How wide to jointly make the buffer name and size columns."
|
||
:type 'number
|
||
:group 'Buffer-menu)
|
||
|
||
(defcustom Buffer-menu-mode-width 16
|
||
"*How wide to make the mode name column."
|
||
:type 'number
|
||
:group 'Buffer-menu)
|
||
|
||
(defcustom Buffer-menu-use-frame-buffer-list t
|
||
"If non-nil, the Buffer Menu uses the selected frame's buffer list.
|
||
Buffers that were never selected in that frame are listed at the end.
|
||
If the value is nil, the Buffer Menu uses the global buffer list.
|
||
This variable matters if the Buffer Menu is sorted by visited order,
|
||
as it is by default."
|
||
:type 'boolean
|
||
:group 'Buffer-menu
|
||
:version "22.1")
|
||
|
||
;; This should get updated & resorted when you click on a column heading
|
||
(defvar Buffer-menu-sort-column nil
|
||
"Which column to sort the menu on.
|
||
Use 2 to sort by buffer names, or 5 to sort by file names.
|
||
A nil value means sort by visited order (the default).")
|
||
|
||
(defconst Buffer-menu-buffer-column 4)
|
||
|
||
(defvar Buffer-menu-files-only nil
|
||
"Non-nil if the current buffer-menu lists only file buffers.
|
||
This variable determines whether reverting the buffer lists only
|
||
file buffers. It affects both manual reverting and reverting by
|
||
Auto Revert Mode.")
|
||
|
||
(make-variable-buffer-local 'Buffer-menu-files-only)
|
||
|
||
(defvar Info-current-file) ;; from info.el
|
||
(defvar Info-current-node) ;; from info.el
|
||
|
||
(defvar Buffer-menu-mode-map
|
||
(let ((map (make-keymap)))
|
||
(suppress-keymap map t)
|
||
(define-key map "q" 'quit-window)
|
||
(define-key map "v" 'Buffer-menu-select)
|
||
(define-key map "2" 'Buffer-menu-2-window)
|
||
(define-key map "1" 'Buffer-menu-1-window)
|
||
(define-key map "f" 'Buffer-menu-this-window)
|
||
(define-key map "e" 'Buffer-menu-this-window)
|
||
(define-key map "\C-m" 'Buffer-menu-this-window)
|
||
(define-key map "o" 'Buffer-menu-other-window)
|
||
(define-key map "\C-o" 'Buffer-menu-switch-other-window)
|
||
(define-key map "s" 'Buffer-menu-save)
|
||
(define-key map "d" 'Buffer-menu-delete)
|
||
(define-key map "k" 'Buffer-menu-delete)
|
||
(define-key map "\C-d" 'Buffer-menu-delete-backwards)
|
||
(define-key map "\C-k" 'Buffer-menu-delete)
|
||
(define-key map "x" 'Buffer-menu-execute)
|
||
(define-key map " " 'next-line)
|
||
(define-key map "n" 'next-line)
|
||
(define-key map "p" 'previous-line)
|
||
(define-key map "\177" 'Buffer-menu-backup-unmark)
|
||
(define-key map "~" 'Buffer-menu-not-modified)
|
||
(define-key map "?" 'describe-mode)
|
||
(define-key map "u" 'Buffer-menu-unmark)
|
||
(define-key map "m" 'Buffer-menu-mark)
|
||
(define-key map "t" 'Buffer-menu-visit-tags-table)
|
||
(define-key map "%" 'Buffer-menu-toggle-read-only)
|
||
(define-key map "b" 'Buffer-menu-bury)
|
||
(define-key map "g" 'Buffer-menu-revert)
|
||
(define-key map "V" 'Buffer-menu-view)
|
||
(define-key map "T" 'Buffer-menu-toggle-files-only)
|
||
(define-key map [mouse-2] 'Buffer-menu-mouse-select)
|
||
(define-key map [follow-link] 'mouse-face)
|
||
map)
|
||
"Local keymap for `Buffer-menu-mode' buffers.")
|
||
|
||
;; Buffer Menu mode is suitable only for specially formatted data.
|
||
(put 'Buffer-menu-mode 'mode-class 'special)
|
||
|
||
(define-derived-mode Buffer-menu-mode nil "Buffer Menu"
|
||
"Major mode for editing a list of buffers.
|
||
Each line describes one of the buffers in Emacs.
|
||
Letters do not insert themselves; instead, they are commands.
|
||
\\<Buffer-menu-mode-map>
|
||
\\[Buffer-menu-mouse-select] -- select buffer you click on, in place of the buffer menu.
|
||
\\[Buffer-menu-this-window] -- select current line's buffer in place of the buffer menu.
|
||
\\[Buffer-menu-other-window] -- select that buffer in another window,
|
||
so the buffer menu buffer remains visible in its window.
|
||
\\[Buffer-menu-view] -- select current line's buffer, but in view-mode.
|
||
\\[Buffer-menu-view-other-window] -- select that buffer in
|
||
another window, in view-mode.
|
||
\\[Buffer-menu-switch-other-window] -- make another window display that buffer.
|
||
\\[Buffer-menu-mark] -- mark current line's buffer to be displayed.
|
||
\\[Buffer-menu-select] -- select current line's buffer.
|
||
Also show buffers marked with m, in other windows.
|
||
\\[Buffer-menu-1-window] -- select that buffer in full-frame window.
|
||
\\[Buffer-menu-2-window] -- select that buffer in one window,
|
||
together with buffer selected before this one in another window.
|
||
\\[Buffer-menu-visit-tags-table] -- visit-tags-table this buffer.
|
||
\\[Buffer-menu-not-modified] -- clear modified-flag on that buffer.
|
||
\\[Buffer-menu-save] -- mark that buffer to be saved, and move down.
|
||
\\[Buffer-menu-delete] -- mark that buffer to be deleted, and move down.
|
||
\\[Buffer-menu-delete-backwards] -- mark that buffer to be deleted, and move up.
|
||
\\[Buffer-menu-execute] -- delete or save marked buffers.
|
||
\\[Buffer-menu-unmark] -- remove all kinds of marks from current line.
|
||
With prefix argument, also move up one line.
|
||
\\[Buffer-menu-backup-unmark] -- back up a line and remove marks.
|
||
\\[Buffer-menu-toggle-read-only] -- toggle read-only status of buffer on this line.
|
||
\\[Buffer-menu-revert] -- update the list of buffers.
|
||
\\[Buffer-menu-toggle-files-only] -- toggle whether the menu displays only file buffers.
|
||
\\[Buffer-menu-bury] -- bury the buffer listed on this line."
|
||
(set (make-local-variable 'revert-buffer-function)
|
||
'Buffer-menu-revert-function)
|
||
(set (make-local-variable 'buffer-stale-function)
|
||
#'(lambda (&optional noconfirm) 'fast))
|
||
(setq truncate-lines t)
|
||
(setq buffer-read-only t))
|
||
|
||
;; This function exists so we can make the doc string of Buffer-menu-mode
|
||
;; look nice.
|
||
(defun Buffer-menu-revert ()
|
||
"Update the list of buffers."
|
||
(interactive)
|
||
(revert-buffer))
|
||
|
||
(defun Buffer-menu-revert-function (ignore1 ignore2)
|
||
(or (eq buffer-undo-list t)
|
||
(setq buffer-undo-list nil))
|
||
;; We can not use save-excursion here. The buffer gets erased.
|
||
(let ((opoint (point))
|
||
(eobp (eobp))
|
||
(ocol (current-column))
|
||
(oline (progn (move-to-column 4)
|
||
(get-text-property (point) 'buffer)))
|
||
(prop (point-min))
|
||
;; do not make undo records for the reversion.
|
||
(buffer-undo-list t))
|
||
;; We can be called by Auto Revert Mode with the "*Buffer Menu*"
|
||
;; temporarily the current buffer. Make sure that the
|
||
;; interactively current buffer is correctly identified with a `.'
|
||
;; by `list-buffers-noselect'.
|
||
(with-current-buffer (window-buffer)
|
||
(list-buffers-noselect Buffer-menu-files-only))
|
||
(if oline
|
||
(while (setq prop (next-single-property-change prop 'buffer))
|
||
(when (eq (get-text-property prop 'buffer) oline)
|
||
(goto-char prop)
|
||
(move-to-column ocol)))
|
||
(goto-char (if eobp (point-max) opoint)))))
|
||
|
||
(defun Buffer-menu-toggle-files-only (arg)
|
||
"Toggle whether the current buffer-menu displays only file buffers.
|
||
With a positive ARG display only file buffers. With zero or
|
||
negative ARG, display other buffers as well."
|
||
(interactive "P")
|
||
(setq Buffer-menu-files-only
|
||
(cond ((not arg) (not Buffer-menu-files-only))
|
||
((> (prefix-numeric-value arg) 0) t)))
|
||
(revert-buffer))
|
||
|
||
|
||
(defun Buffer-menu-buffer (error-if-non-existent-p)
|
||
"Return buffer described by this line of buffer menu."
|
||
(let* ((where (save-excursion
|
||
(beginning-of-line)
|
||
(+ (point) Buffer-menu-buffer-column)))
|
||
(name (and (not (eobp)) (get-text-property where 'buffer-name)))
|
||
(buf (and (not (eobp)) (get-text-property where 'buffer))))
|
||
(if name
|
||
(or (get-buffer name)
|
||
(and buf (buffer-name buf) buf)
|
||
(if error-if-non-existent-p
|
||
(error "No buffer named `%s'" name)
|
||
nil))
|
||
(or (and buf (buffer-name buf) buf)
|
||
(if error-if-non-existent-p
|
||
(error "No buffer on this line")
|
||
nil)))))
|
||
|
||
(defun buffer-menu (&optional arg)
|
||
"Make a menu of buffers so you can save, delete or select them.
|
||
With argument, show only buffers that are visiting files.
|
||
Type ? after invocation to get help on commands available.
|
||
Type q to remove the buffer menu from the display.
|
||
|
||
The first column shows `>' for a buffer you have
|
||
marked to be displayed, `D' for one you have marked for
|
||
deletion, and `.' for the current buffer.
|
||
|
||
The C column has a `.' for the buffer from which you came.
|
||
The R column has a `%' if the buffer is read-only.
|
||
The M column has a `*' if it is modified,
|
||
or `S' if you have marked it for saving.
|
||
After this come the buffer name, its size in characters,
|
||
its major mode, and the visited file name (if any)."
|
||
(interactive "P")
|
||
;;; (setq Buffer-menu-window-config (current-window-configuration))
|
||
(switch-to-buffer (list-buffers-noselect arg))
|
||
(message
|
||
"Commands: d, s, x, u; f, o, 1, 2, m, v; ~, %%; q to quit; ? for help."))
|
||
|
||
(defun buffer-menu-other-window (&optional arg)
|
||
"Display a list of buffers in another window.
|
||
With the buffer list buffer, you can save, delete or select the buffers.
|
||
With argument, show only buffers that are visiting files.
|
||
Type ? after invocation to get help on commands available.
|
||
Type q to remove the buffer menu from the display.
|
||
For more information, see the function `buffer-menu'."
|
||
(interactive "P")
|
||
;;; (setq Buffer-menu-window-config (current-window-configuration))
|
||
(switch-to-buffer-other-window (list-buffers-noselect arg))
|
||
(message
|
||
"Commands: d, s, x, u; f, o, 1, 2, m, v; ~, %%; q to quit; ? for help."))
|
||
|
||
(defun Buffer-menu-no-header ()
|
||
(beginning-of-line)
|
||
(if (or Buffer-menu-use-header-line
|
||
(not (eq (char-after) ?C)))
|
||
t
|
||
(ding)
|
||
(forward-line 1)
|
||
nil))
|
||
|
||
(defun Buffer-menu-mark ()
|
||
"Mark buffer on this line for being displayed by \\<Buffer-menu-mode-map>\\[Buffer-menu-select] command."
|
||
(interactive)
|
||
(when (Buffer-menu-no-header)
|
||
(let ((buffer-read-only nil))
|
||
(delete-char 1)
|
||
(insert ?>)
|
||
(forward-line 1))))
|
||
|
||
(defun Buffer-menu-unmark (&optional backup)
|
||
"Cancel all requested operations on buffer on this line and move down.
|
||
Optional prefix arg means move up."
|
||
(interactive "P")
|
||
(when (Buffer-menu-no-header)
|
||
(let* ((buf (Buffer-menu-buffer t))
|
||
(mod (buffer-modified-p buf))
|
||
(readonly (save-excursion (set-buffer buf) buffer-read-only))
|
||
(buffer-read-only nil))
|
||
(delete-char 3)
|
||
(insert (if readonly (if mod " %*" " % ") (if mod " *" " ")))))
|
||
(forward-line (if backup -1 1)))
|
||
|
||
(defun Buffer-menu-backup-unmark ()
|
||
"Move up and cancel all requested operations on buffer on line above."
|
||
(interactive)
|
||
(forward-line -1)
|
||
(Buffer-menu-unmark)
|
||
(forward-line -1))
|
||
|
||
(defun Buffer-menu-delete (&optional arg)
|
||
"Mark buffer on this line to be deleted by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command.
|
||
Prefix arg is how many buffers to delete.
|
||
Negative arg means delete backwards."
|
||
(interactive "p")
|
||
(when (Buffer-menu-no-header)
|
||
(let ((buffer-read-only nil))
|
||
(if (or (null arg) (= arg 0))
|
||
(setq arg 1))
|
||
(while (> arg 0)
|
||
(delete-char 1)
|
||
(insert ?D)
|
||
(forward-line 1)
|
||
(setq arg (1- arg)))
|
||
(while (and (< arg 0)
|
||
(Buffer-menu-no-header))
|
||
(delete-char 1)
|
||
(insert ?D)
|
||
(forward-line -1)
|
||
(setq arg (1+ arg))))))
|
||
|
||
(defun Buffer-menu-delete-backwards (&optional arg)
|
||
"Mark buffer on this line to be deleted by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command
|
||
and then move up one line. Prefix arg means move that many lines."
|
||
(interactive "p")
|
||
(Buffer-menu-delete (- (or arg 1))))
|
||
|
||
(defun Buffer-menu-save ()
|
||
"Mark buffer on this line to be saved by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command."
|
||
(interactive)
|
||
(when (Buffer-menu-no-header)
|
||
(let ((buffer-read-only nil))
|
||
(forward-char 2)
|
||
(delete-char 1)
|
||
(insert ?S)
|
||
(forward-line 1))))
|
||
|
||
(defun Buffer-menu-not-modified (&optional arg)
|
||
"Mark buffer on this line as unmodified (no changes to save)."
|
||
(interactive "P")
|
||
(save-excursion
|
||
(set-buffer (Buffer-menu-buffer t))
|
||
(set-buffer-modified-p arg))
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(forward-char 2)
|
||
(if (= (char-after) (if arg ?\s ?*))
|
||
(let ((buffer-read-only nil))
|
||
(delete-char 1)
|
||
(insert (if arg ?* ?\s))))))
|
||
|
||
(defun Buffer-menu-beginning ()
|
||
(goto-char (point-min))
|
||
(unless Buffer-menu-use-header-line
|
||
(forward-line)))
|
||
|
||
(defun Buffer-menu-execute ()
|
||
"Save and/or delete buffers marked with \\<Buffer-menu-mode-map>\\[Buffer-menu-save] or \\<Buffer-menu-mode-map>\\[Buffer-menu-delete] commands."
|
||
(interactive)
|
||
(save-excursion
|
||
(Buffer-menu-beginning)
|
||
(while (re-search-forward "^..S" nil t)
|
||
(let ((modp nil))
|
||
(save-excursion
|
||
(set-buffer (Buffer-menu-buffer t))
|
||
(save-buffer)
|
||
(setq modp (buffer-modified-p)))
|
||
(let ((buffer-read-only nil))
|
||
(delete-char -1)
|
||
(insert (if modp ?* ?\s))))))
|
||
(save-excursion
|
||
(Buffer-menu-beginning)
|
||
(let ((buff-menu-buffer (current-buffer))
|
||
(buffer-read-only nil))
|
||
(while (re-search-forward "^D" nil t)
|
||
(forward-char -1)
|
||
(let ((buf (Buffer-menu-buffer nil)))
|
||
(or (eq buf nil)
|
||
(eq buf buff-menu-buffer)
|
||
(save-excursion (kill-buffer buf)))
|
||
(if (and buf (buffer-name buf))
|
||
(progn (delete-char 1)
|
||
(insert ?\s))
|
||
(delete-region (point) (progn (forward-line 1) (point)))
|
||
(unless (bobp)
|
||
(forward-char -1))))))))
|
||
|
||
(defun Buffer-menu-select ()
|
||
"Select this line's buffer; also display buffers marked with `>'.
|
||
You can mark buffers with the \\<Buffer-menu-mode-map>\\[Buffer-menu-mark] command.
|
||
This command deletes and replaces all the previously existing windows
|
||
in the selected frame."
|
||
(interactive)
|
||
(let ((buff (Buffer-menu-buffer t))
|
||
(menu (current-buffer))
|
||
(others ())
|
||
tem)
|
||
(Buffer-menu-beginning)
|
||
(while (re-search-forward "^>" nil t)
|
||
(setq tem (Buffer-menu-buffer t))
|
||
(let ((buffer-read-only nil))
|
||
(delete-char -1)
|
||
(insert ?\s))
|
||
(or (eq tem buff) (memq tem others) (setq others (cons tem others))))
|
||
(setq others (nreverse others)
|
||
tem (/ (1- (frame-height)) (1+ (length others))))
|
||
(delete-other-windows)
|
||
(switch-to-buffer buff)
|
||
(or (eq menu buff)
|
||
(bury-buffer menu))
|
||
(if (equal (length others) 0)
|
||
(progn
|
||
;;; ;; Restore previous window configuration before displaying
|
||
;;; ;; selected buffers.
|
||
;;; (if Buffer-menu-window-config
|
||
;;; (progn
|
||
;;; (set-window-configuration Buffer-menu-window-config)
|
||
;;; (setq Buffer-menu-window-config nil)))
|
||
(switch-to-buffer buff))
|
||
(while others
|
||
(split-window nil tem)
|
||
(other-window 1)
|
||
(switch-to-buffer (car others))
|
||
(setq others (cdr others)))
|
||
(other-window 1) ;back to the beginning!
|
||
)))
|
||
|
||
|
||
|
||
(defun Buffer-menu-visit-tags-table ()
|
||
"Visit the tags table in the buffer on this line. See `visit-tags-table'."
|
||
(interactive)
|
||
(let ((file (buffer-file-name (Buffer-menu-buffer t))))
|
||
(if file
|
||
(visit-tags-table file)
|
||
(error "Specified buffer has no file"))))
|
||
|
||
(defun Buffer-menu-1-window ()
|
||
"Select this line's buffer, alone, in full frame."
|
||
(interactive)
|
||
(switch-to-buffer (Buffer-menu-buffer t))
|
||
(bury-buffer (other-buffer))
|
||
(delete-other-windows))
|
||
|
||
(defun Buffer-menu-mouse-select (event)
|
||
"Select the buffer whose line you click on."
|
||
(interactive "e")
|
||
(let (buffer)
|
||
(save-excursion
|
||
(set-buffer (window-buffer (posn-window (event-end event))))
|
||
(save-excursion
|
||
(goto-char (posn-point (event-end event)))
|
||
(setq buffer (Buffer-menu-buffer t))))
|
||
(select-window (posn-window (event-end event)))
|
||
(if (and (window-dedicated-p (selected-window))
|
||
(eq (selected-window) (frame-root-window)))
|
||
(switch-to-buffer-other-frame buffer)
|
||
(switch-to-buffer buffer))))
|
||
|
||
(defun Buffer-menu-this-window ()
|
||
"Select this line's buffer in this window."
|
||
(interactive)
|
||
(switch-to-buffer (Buffer-menu-buffer t)))
|
||
|
||
(defun Buffer-menu-other-window ()
|
||
"Select this line's buffer in other window, leaving buffer menu visible."
|
||
(interactive)
|
||
(switch-to-buffer-other-window (Buffer-menu-buffer t)))
|
||
|
||
(defun Buffer-menu-switch-other-window ()
|
||
"Make the other window select this line's buffer.
|
||
The current window remains selected."
|
||
(interactive)
|
||
(let ((pop-up-windows t)
|
||
same-window-buffer-names
|
||
same-window-regexps)
|
||
(display-buffer (Buffer-menu-buffer t))))
|
||
|
||
(defun Buffer-menu-2-window ()
|
||
"Select this line's buffer, with previous buffer in second window."
|
||
(interactive)
|
||
(let ((buff (Buffer-menu-buffer t))
|
||
(menu (current-buffer))
|
||
(pop-up-windows t)
|
||
same-window-buffer-names
|
||
same-window-regexps)
|
||
(delete-other-windows)
|
||
(switch-to-buffer (other-buffer))
|
||
(pop-to-buffer buff)
|
||
(bury-buffer menu)))
|
||
|
||
(defun Buffer-menu-toggle-read-only ()
|
||
"Toggle read-only status of buffer on this line, perhaps via version control."
|
||
(interactive)
|
||
(let (char)
|
||
(save-excursion
|
||
(set-buffer (Buffer-menu-buffer t))
|
||
(vc-toggle-read-only)
|
||
(setq char (if buffer-read-only ?% ?\s)))
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(forward-char 1)
|
||
(if (/= (following-char) char)
|
||
(let (buffer-read-only)
|
||
(delete-char 1)
|
||
(insert char))))))
|
||
|
||
(defun Buffer-menu-bury ()
|
||
"Bury the buffer listed on this line."
|
||
(interactive)
|
||
(when (Buffer-menu-no-header)
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(bury-buffer (Buffer-menu-buffer t))
|
||
(let ((line (buffer-substring (point) (progn (forward-line 1) (point))))
|
||
(buffer-read-only nil))
|
||
(delete-region (point) (progn (forward-line -1) (point)))
|
||
(goto-char (point-max))
|
||
(insert line))
|
||
(message "Buried buffer moved to the end"))))
|
||
|
||
|
||
(defun Buffer-menu-view ()
|
||
"View this line's buffer in View mode."
|
||
(interactive)
|
||
(view-buffer (Buffer-menu-buffer t)))
|
||
|
||
|
||
(defun Buffer-menu-view-other-window ()
|
||
"View this line's buffer in View mode in another window."
|
||
(interactive)
|
||
(view-buffer-other-window (Buffer-menu-buffer t)))
|
||
|
||
|
||
(define-key ctl-x-map "\C-b" 'list-buffers)
|
||
|
||
(defun list-buffers (&optional files-only)
|
||
"Display a list of names of existing buffers.
|
||
The list is displayed in a buffer named `*Buffer List*'.
|
||
Note that buffers with names starting with spaces are omitted.
|
||
Non-null optional arg FILES-ONLY means mention only file buffers.
|
||
|
||
For more information, see the function `buffer-menu'."
|
||
(interactive "P")
|
||
(display-buffer (list-buffers-noselect files-only)))
|
||
|
||
(defun Buffer-menu-buffer+size (name size &optional name-props size-props)
|
||
(if (> (+ (length name) (length size) 2) Buffer-menu-buffer+size-width)
|
||
(setq name
|
||
(if (string-match "<[0-9]+>$" name)
|
||
(concat (substring name 0
|
||
(- Buffer-menu-buffer+size-width
|
||
(max (length size) 3)
|
||
(match-end 0)
|
||
(- (match-beginning 0))
|
||
2))
|
||
":" ; narrow ellipsis
|
||
(match-string 0 name))
|
||
(concat (substring name 0
|
||
(- Buffer-menu-buffer+size-width
|
||
(max (length size) 3)
|
||
2))
|
||
":"))) ; narrow ellipsis
|
||
;; Don't put properties on (buffer-name).
|
||
(setq name (copy-sequence name)))
|
||
(add-text-properties 0 (length name) name-props name)
|
||
(add-text-properties 0 (length size) size-props size)
|
||
(concat name
|
||
(make-string (- Buffer-menu-buffer+size-width
|
||
(length name)
|
||
(length size))
|
||
?\s)
|
||
size))
|
||
|
||
(defun Buffer-menu-sort (column)
|
||
"Sort the buffer menu by COLUMN."
|
||
(interactive "P")
|
||
(when column
|
||
(setq column (prefix-numeric-value column))
|
||
(if (< column 2) (setq column 2))
|
||
(if (> column 5) (setq column 5)))
|
||
(setq Buffer-menu-sort-column column)
|
||
(let (buffer-read-only l buf m1 m2)
|
||
(save-excursion
|
||
(Buffer-menu-beginning)
|
||
(while (not (eobp))
|
||
(when (buffer-live-p (setq buf (get-text-property (+ (point) 4) 'buffer)))
|
||
(setq m1 (char-after)
|
||
m1 (if (memq m1 '(?> ?D)) m1)
|
||
m2 (char-after (+ (point) 2))
|
||
m2 (if (eq m2 ?S) m2))
|
||
(if (or m1 m2)
|
||
(push (list buf m1 m2) l)))
|
||
(forward-line)))
|
||
(Buffer-menu-revert)
|
||
(setq buffer-read-only)
|
||
(save-excursion
|
||
(Buffer-menu-beginning)
|
||
(while (not (eobp))
|
||
(when (setq buf (assq (get-text-property (+ (point) 4) 'buffer) l))
|
||
(setq m1 (cadr buf)
|
||
m2 (cadr (cdr buf)))
|
||
(when m1
|
||
(delete-char 1)
|
||
(insert m1)
|
||
(backward-char 1))
|
||
(when m2
|
||
(forward-char 2)
|
||
(delete-char 1)
|
||
(insert m2)))
|
||
(forward-line)))))
|
||
|
||
(defun Buffer-menu-sort-by-column (&optional e)
|
||
"Sort the buffer menu by the column clicked on."
|
||
(interactive (list last-input-event))
|
||
(if e (mouse-select-window e))
|
||
(let* ((pos (event-start e))
|
||
(obj (posn-object pos))
|
||
(col (if obj
|
||
(get-text-property (cdr obj) 'column (car obj))
|
||
(get-text-property (posn-point pos) 'column))))
|
||
(Buffer-menu-sort col)))
|
||
|
||
(defvar Buffer-menu-sort-button-map
|
||
(let ((map (make-sparse-keymap)))
|
||
;; This keymap handles both nil and non-nil values for
|
||
;; Buffer-menu-use-header-line.
|
||
(define-key map [header-line mouse-1] 'Buffer-menu-sort-by-column)
|
||
(define-key map [header-line mouse-2] 'Buffer-menu-sort-by-column)
|
||
(define-key map [mouse-2] 'Buffer-menu-sort-by-column)
|
||
(define-key map [follow-link] 'mouse-face)
|
||
(define-key map "\C-m" 'Buffer-menu-sort-by-column)
|
||
map)
|
||
"Local keymap for Buffer menu sort buttons.")
|
||
|
||
(defun Buffer-menu-make-sort-button (name column)
|
||
(if (equal column Buffer-menu-sort-column) (setq column nil))
|
||
(propertize name
|
||
'column column
|
||
'help-echo (concat
|
||
(if Buffer-menu-use-header-line
|
||
"mouse-1, mouse-2: sort by "
|
||
"mouse-2, RET: sort by ")
|
||
(if column (downcase name) "visited order"))
|
||
'mouse-face 'highlight
|
||
'keymap Buffer-menu-sort-button-map))
|
||
|
||
(defun list-buffers-noselect (&optional files-only buffer-list)
|
||
"Create and return a buffer with a list of names of existing buffers.
|
||
The buffer is named `*Buffer List*'.
|
||
Note that buffers with names starting with spaces are omitted.
|
||
Non-null optional arg FILES-ONLY means mention only file buffers.
|
||
|
||
If BUFFER-LIST is non-nil, it should be a list of buffers;
|
||
it means list those buffers and no others.
|
||
|
||
For more information, see the function `buffer-menu'."
|
||
(let* ((old-buffer (current-buffer))
|
||
(standard-output standard-output)
|
||
(mode-end (make-string (- Buffer-menu-mode-width 2) ?\s))
|
||
(header (concat "CRM "
|
||
(Buffer-menu-buffer+size
|
||
(Buffer-menu-make-sort-button "Buffer" 2)
|
||
(Buffer-menu-make-sort-button "Size" 3))
|
||
" "
|
||
(Buffer-menu-make-sort-button "Mode" 4) mode-end
|
||
(Buffer-menu-make-sort-button "File" 5) "\n"))
|
||
list desired-point)
|
||
(when Buffer-menu-use-header-line
|
||
(let ((pos 0))
|
||
;; Turn whitespace chars in the header into stretch specs so
|
||
;; they work regardless of the header-line face.
|
||
(while (string-match "[ \t\n]+" header pos)
|
||
(setq pos (match-end 0))
|
||
(put-text-property (match-beginning 0) pos 'display
|
||
;; Assume fixed-size chars in the buffer.
|
||
(list 'space :align-to pos)
|
||
header)))
|
||
;; Try to better align the one-char headers.
|
||
(put-text-property 0 3 'face 'fixed-pitch header)
|
||
;; Add a "dummy" leading space to align the beginning of the header
|
||
;; line with the beginning of the text (rather than with the left
|
||
;; scrollbar or the left fringe). --Stef
|
||
(setq header (concat (propertize " " 'display '(space :align-to 0))
|
||
header)))
|
||
(with-current-buffer (get-buffer-create "*Buffer List*")
|
||
(setq buffer-read-only nil)
|
||
(erase-buffer)
|
||
(setq standard-output (current-buffer))
|
||
(unless Buffer-menu-use-header-line
|
||
;; Use U+2014 (EM DASH) to underline if possible, else use ASCII
|
||
;; (i.e. U+002D, HYPHEN-MINUS).
|
||
(let ((underline (if (char-displayable-p ?\u2014) ?\u2014 ?-)))
|
||
(insert header
|
||
(apply 'string
|
||
(mapcar (lambda (c)
|
||
(if (memq c '(?\n ?\s)) c underline))
|
||
header)))))
|
||
;; Collect info for every buffer we're interested in.
|
||
(dolist (buffer (or buffer-list
|
||
(buffer-list
|
||
(when Buffer-menu-use-frame-buffer-list
|
||
(selected-frame)))))
|
||
(with-current-buffer buffer
|
||
(let ((name (buffer-name))
|
||
(file buffer-file-name))
|
||
(unless (and (not buffer-list)
|
||
(or
|
||
;; Don't mention internal buffers.
|
||
(and (string= (substring name 0 1) " ") (null file))
|
||
;; Maybe don't mention buffers without files.
|
||
(and files-only (not file))
|
||
(string= name "*Buffer List*")))
|
||
;; Otherwise output info.
|
||
(let ((mode (concat (format-mode-line mode-name nil nil buffer)
|
||
(if mode-line-process
|
||
(format-mode-line mode-line-process
|
||
nil nil buffer))))
|
||
(bits (string
|
||
(if (eq buffer old-buffer) ?. ?\s)
|
||
;; Handle readonly status. The output buffer
|
||
;; is special cased to appear readonly; it is
|
||
;; actually made so at a later date.
|
||
(if (or (eq buffer standard-output)
|
||
buffer-read-only)
|
||
?% ?\s)
|
||
;; Identify modified buffers.
|
||
(if (buffer-modified-p) ?* ?\s)
|
||
;; Space separator.
|
||
?\s)))
|
||
(unless file
|
||
;; No visited file. Check local value of
|
||
;; list-buffers-directory and, for Info buffers,
|
||
;; Info-current-file.
|
||
(cond ((and (boundp 'list-buffers-directory)
|
||
list-buffers-directory)
|
||
(setq file list-buffers-directory))
|
||
((eq major-mode 'Info-mode)
|
||
(setq file Info-current-file)
|
||
(cond
|
||
((equal file "dir")
|
||
(setq file "*Info Directory*"))
|
||
((eq file 'apropos)
|
||
(setq file "*Info Apropos*"))
|
||
((eq file 'history)
|
||
(setq file "*Info History*"))
|
||
((eq file 'toc)
|
||
(setq file "*Info TOC*"))
|
||
((not (stringp file)) ;; avoid errors
|
||
(setq file nil))
|
||
(t
|
||
(setq file (concat "("
|
||
(file-name-nondirectory file)
|
||
")"
|
||
Info-current-node)))))))
|
||
(push (list buffer bits name (buffer-size) mode file)
|
||
list))))))
|
||
;; Preserve the original buffer-list ordering, just in case.
|
||
(setq list (nreverse list))
|
||
;; Place the buffers's info in the output buffer, sorted if necessary.
|
||
(dolist (buffer
|
||
(if Buffer-menu-sort-column
|
||
(sort list
|
||
(if (eq Buffer-menu-sort-column 3)
|
||
(lambda (a b)
|
||
(< (nth Buffer-menu-sort-column a)
|
||
(nth Buffer-menu-sort-column b)))
|
||
(lambda (a b)
|
||
(string< (nth Buffer-menu-sort-column a)
|
||
(nth Buffer-menu-sort-column b)))))
|
||
list))
|
||
(if (eq (car buffer) old-buffer)
|
||
(setq desired-point (point)))
|
||
(insert (cadr buffer)
|
||
;; Put the buffer name into a text property
|
||
;; so we don't have to extract it from the text.
|
||
;; This way we avoid problems with unusual buffer names.
|
||
(let ((name (nth 2 buffer))
|
||
(size (int-to-string (nth 3 buffer))))
|
||
(Buffer-menu-buffer+size name size
|
||
`(buffer-name ,name
|
||
buffer ,(car buffer)
|
||
font-lock-face buffer-menu-buffer
|
||
mouse-face highlight
|
||
help-echo
|
||
,(if (>= (length name)
|
||
(- Buffer-menu-buffer+size-width
|
||
(max (length size) 3)
|
||
2))
|
||
name
|
||
"mouse-2: select this buffer"))))
|
||
" "
|
||
(if (> (length (nth 4 buffer)) Buffer-menu-mode-width)
|
||
(substring (nth 4 buffer) 0 Buffer-menu-mode-width)
|
||
(nth 4 buffer)))
|
||
(when (nth 5 buffer)
|
||
(indent-to (+ Buffer-menu-buffer-column Buffer-menu-buffer+size-width
|
||
Buffer-menu-mode-width 4) 1)
|
||
(princ (abbreviate-file-name (nth 5 buffer))))
|
||
(princ "\n"))
|
||
(Buffer-menu-mode)
|
||
(when Buffer-menu-use-header-line
|
||
(setq header-line-format header))
|
||
;; DESIRED-POINT doesn't have to be set; it is not when the
|
||
;; current buffer is not displayed for some reason.
|
||
(and desired-point
|
||
(goto-char desired-point))
|
||
(setq Buffer-menu-files-only files-only)
|
||
(set-buffer-modified-p nil)
|
||
(current-buffer))))
|
||
|
||
;; arch-tag: e7dfcfc9-6cb2-46e4-bf55-8ef1936d83c6
|
||
;;; buff-menu.el ends here
|