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;;; buff-menu.el --- buffer menu main function and support functions |
;;; buff-menu.el --- buffer menu main function and support functions |
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;; Copyright (C) 1985, 86, 87, 93, 94, 95, 2000, 2001 |
;; Copyright (C) 1985, 86, 87, 93, 94, 95, 2000, 2001, 2002 |
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;; Free Software Foundation, Inc. |
;; Free Software Foundation, Inc. |
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;; Maintainer: FSF |
;; Maintainer: FSF |
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; Put buffer *Buffer List* into proper mode right away |
; Put buffer *Buffer List* into proper mode right away |
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; so that from now on even list-buffers is enough to get a buffer menu. |
; so that from now on even list-buffers is enough to get a buffer menu. |
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(defvar Buffer-menu-buffer-column nil) |
(defgroup Buffer-menu nil |
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"Show a menu of all buffers in a buffer." |
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:group 'tools |
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:group 'convenience) |
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(defcustom Buffer-menu-use-header-line t |
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"*Non-nil means to use an immovable header-line." |
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:type 'boolean |
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:group 'Buffer-menu) |
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(defface Buffer-menu-buffer-face |
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'((t (:weight bold))) |
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"Face used to highlight buffer name." |
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:group 'font-lock-highlighting-faces) |
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(defcustom Buffer-menu-buffer+size-width 21 |
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"*How wide to jointly make the buffer name and size columns." |
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:type 'number |
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:group 'Buffer-menu) |
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(defcustom Buffer-menu-mode-width 11 |
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"*How wide to make the mode name column." |
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:type 'number |
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:group 'Buffer-menu) |
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; This should get updated & resorted when you click on a column heading |
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(defvar Buffer-menu-sort-column nil |
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"*2 for sorting by buffer names. 5 for sorting by file names. |
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nil for default sorting by visited order.") |
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(defconst Buffer-menu-buffer-column 4) |
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(defvar Buffer-menu-mode-map nil "") |
(defvar Buffer-menu-mode-map nil "") |
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marked to be displayed, `D' for one you have marked for |
marked to be displayed, `D' for one you have marked for |
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deletion, and `.' for the current buffer. |
deletion, and `.' for the current buffer. |
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The C column has a `.' for the buffer from which you came. |
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The R column has a `%' if the buffer is read-only. |
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The M column has a `*' if it is modified, |
The M column has a `*' if it is modified, |
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or `S' if you have marked it for saving. |
or `S' if you have marked it for saving. |
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The R column has a `%' if the buffer is read-only. |
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After this come the buffer name, its size in characters, |
After this come the buffer name, its size in characters, |
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its major mode, and the visited file name (if any)." |
its major mode, and the visited file name (if any)." |
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(interactive "P") |
(interactive "P") |
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(message |
(message |
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"Commands: d, s, x, u; f, o, 1, 2, m, v; ~, %%; q to quit; ? for help.")) |
"Commands: d, s, x, u; f, o, 1, 2, m, v; ~, %%; q to quit; ? for help.")) |
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(defun Buffer-menu-no-header () |
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(beginning-of-line) |
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(if (or Buffer-menu-use-header-line |
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(not (eq (char-after) ?C))) |
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t |
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(ding) |
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(forward-line 1) |
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nil)) |
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(defun Buffer-menu-mark () |
(defun Buffer-menu-mark () |
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"Mark buffer on this line for being displayed by \\<Buffer-menu-mode-map>\\[Buffer-menu-select] command." |
"Mark buffer on this line for being displayed by \\<Buffer-menu-mode-map>\\[Buffer-menu-select] command." |
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(interactive) |
(interactive) |
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(beginning-of-line) |
(when (Buffer-menu-no-header) |
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(if (looking-at " [-M]") |
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(ding) |
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(let ((buffer-read-only nil)) |
(let ((buffer-read-only nil)) |
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(delete-char 1) |
(delete-char 1) |
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(insert ?>) |
(insert ?>) |
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"Cancel all requested operations on buffer on this line and move down. |
"Cancel all requested operations on buffer on this line and move down. |
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Optional ARG means move up." |
Optional ARG means move up." |
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(interactive "P") |
(interactive "P") |
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(beginning-of-line) |
(when (Buffer-menu-no-header) |
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(if (looking-at " [-M]") |
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(ding) |
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(let* ((buf (Buffer-menu-buffer t)) |
(let* ((buf (Buffer-menu-buffer t)) |
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(mod (buffer-modified-p buf)) |
(mod (buffer-modified-p buf)) |
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(readonly (save-excursion (set-buffer buf) buffer-read-only)) |
(readonly (save-excursion (set-buffer buf) buffer-read-only)) |
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(buffer-read-only nil)) |
(buffer-read-only nil)) |
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(delete-char 3) |
(delete-char 3) |
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(insert (if readonly (if mod " *%" " %") (if mod " * " " "))))) |
(insert (if readonly (if mod " %*" " % ") (if mod " *" " "))))) |
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(forward-line (if backup -1 1))) |
(forward-line (if backup -1 1))) |
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(defun Buffer-menu-backup-unmark () |
(defun Buffer-menu-backup-unmark () |
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Prefix arg is how many buffers to delete. |
Prefix arg is how many buffers to delete. |
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Negative arg means delete backwards." |
Negative arg means delete backwards." |
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(interactive "p") |
(interactive "p") |
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(beginning-of-line) |
(when (Buffer-menu-no-header) |
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(if (looking-at " [-M]") ;header lines |
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(ding) |
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(let ((buffer-read-only nil)) |
(let ((buffer-read-only nil)) |
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(if (or (null arg) (= arg 0)) |
(if (or (null arg) (= arg 0)) |
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(setq arg 1)) |
(setq arg 1)) |
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(insert ?D) |
(insert ?D) |
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(forward-line 1) |
(forward-line 1) |
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(setq arg (1- arg))) |
(setq arg (1- arg))) |
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(while (< arg 0) |
(while (and (< arg 0) |
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(Buffer-menu-no-header)) |
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(delete-char 1) |
(delete-char 1) |
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(insert ?D) |
(insert ?D) |
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(forward-line -1) |
(forward-line -1) |
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"Mark buffer on this line to be deleted by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command |
"Mark buffer on this line to be deleted by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command |
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and then move up one line. Prefix arg means move that many lines." |
and then move up one line. Prefix arg means move that many lines." |
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(interactive "p") |
(interactive "p") |
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(Buffer-menu-delete (- (or arg 1))) |
(Buffer-menu-delete (- (or arg 1)))) |
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(while (looking-at " [-M]") |
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(forward-line 1))) |
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(defun Buffer-menu-save () |
(defun Buffer-menu-save () |
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"Mark buffer on this line to be saved by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command." |
"Mark buffer on this line to be saved by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command." |
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(interactive) |
(interactive) |
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(beginning-of-line) |
(when (Buffer-menu-no-header) |
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(if (looking-at " [-M]") ;header lines |
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(ding) |
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(let ((buffer-read-only nil)) |
(let ((buffer-read-only nil)) |
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(forward-char 1) |
(forward-char 2) |
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(delete-char 1) |
(delete-char 1) |
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(insert ?S) |
(insert ?S) |
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(forward-line 1)))) |
(forward-line 1)))) |
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(set-buffer-modified-p arg)) |
(set-buffer-modified-p arg)) |
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(save-excursion |
(save-excursion |
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(beginning-of-line) |
(beginning-of-line) |
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(forward-char 1) |
(forward-char 2) |
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(if (= (char-after (point)) (if arg ? ?*)) |
(if (= (char-after) (if arg ? ?*)) |
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(let ((buffer-read-only nil)) |
(let ((buffer-read-only nil)) |
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(delete-char 1) |
(delete-char 1) |
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(insert (if arg ?* ? )))))) |
(insert (if arg ?* ? )))))) |
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(save-excursion |
(save-excursion |
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(goto-char (point-min)) |
(goto-char (point-min)) |
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(forward-line 1) |
(forward-line 1) |
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(while (re-search-forward "^.S" nil t) |
(while (re-search-forward "^..S" nil t) |
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(let ((modp nil)) |
(let ((modp nil)) |
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(save-excursion |
(save-excursion |
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(set-buffer (Buffer-menu-buffer t)) |
(set-buffer (Buffer-menu-buffer t)) |
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(setq char (if buffer-read-only ?% ? ))) |
(setq char (if buffer-read-only ?% ? ))) |
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(save-excursion |
(save-excursion |
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(beginning-of-line) |
(beginning-of-line) |
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(forward-char 2) |
(forward-char 1) |
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(if (/= (following-char) char) |
(if (/= (following-char) char) |
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(let (buffer-read-only) |
(let (buffer-read-only) |
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(delete-char 1) |
(delete-char 1) |
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(defun Buffer-menu-bury () |
(defun Buffer-menu-bury () |
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"Bury the buffer listed on this line." |
"Bury the buffer listed on this line." |
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(interactive) |
(interactive) |
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(beginning-of-line) |
(when (Buffer-menu-no-header) |
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(if (looking-at " [-M]") ;header lines |
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(ding) |
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(save-excursion |
(save-excursion |
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(beginning-of-line) |
(beginning-of-line) |
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(bury-buffer (Buffer-menu-buffer t)) |
(bury-buffer (Buffer-menu-buffer t)) |
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(interactive "P") |
(interactive "P") |
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(display-buffer (list-buffers-noselect files-only))) |
(display-buffer (list-buffers-noselect files-only))) |
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(defun Buffer-menu-buffer+size (name size &optional name-props size-props) |
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(if (> (+ (length name) (length size) 2) Buffer-menu-buffer+size-width) |
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(setq name |
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(if (string-match "<[0-9]+>$" name) |
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(concat (substring name 0 |
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(- Buffer-menu-buffer+size-width |
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(max (length size) 3) |
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(match-end 0) |
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(- (match-beginning 0)) |
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2)) |
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":" ; narrow ellipsis |
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(match-string 0 name)) |
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(concat (substring name 0 |
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(- Buffer-menu-buffer+size-width |
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(max (length size) 3) |
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2)) |
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":")))) ; narrow ellipsis |
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(add-text-properties 0 (length name) name-props name) |
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(add-text-properties 0 (length size) size-props size) |
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(concat name |
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(make-string (- Buffer-menu-buffer+size-width |
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(length name) |
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(length size)) |
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? ) |
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size)) |
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(defun list-buffers-noselect (&optional files-only) |
(defun list-buffers-noselect (&optional files-only) |
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"Create and return a buffer with a list of names of existing buffers. |
"Create and return a buffer with a list of names of existing buffers. |
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The buffer is named `*Buffer List*'. |
The buffer is named `*Buffer List*'. |
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Non-null optional arg FILES-ONLY means mention only file buffers. |
Non-null optional arg FILES-ONLY means mention only file buffers. |
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For more information, see the function `buffer-menu'." |
For more information, see the function `buffer-menu'." |
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(let ((old-buffer (current-buffer)) |
(let* ((old-buffer (current-buffer)) |
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(standard-output standard-output) |
(standard-output standard-output) |
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desired-point) |
(mode-end (make-string (- Buffer-menu-mode-width 2) ? )) |
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(header (concat "CRM " (Buffer-menu-buffer+size "Buffer" "Size") |
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" Mode" mode-end "File\n")) |
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list desired-point name file mode) |
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(save-excursion |
(save-excursion |
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(set-buffer (get-buffer-create "*Buffer List*")) |
(set-buffer (get-buffer-create "*Buffer List*")) |
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(setq buffer-read-only nil) |
(setq buffer-read-only nil) |
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(erase-buffer) |
(erase-buffer) |
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(setq standard-output (current-buffer)) |
(setq standard-output (current-buffer)) |
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(princ "\ |
(unless Buffer-menu-use-header-line |
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MR Buffer Size Mode File |
(insert header "--- ------") |
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-- ------ ---- ---- ---- |
(indent-to Buffer-menu-buffer+size-width) |
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") |
(insert "---- ----" mode-end "----\n") |
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;; Record the column where buffer names start. |
(put-text-property 1 (point) 'intangible t)) |
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(setq Buffer-menu-buffer-column 4) |
(setq list |
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(dolist (buffer (buffer-list)) |
(delq t |
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(let ((name (buffer-name buffer)) |
(mapcar |
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(file (buffer-file-name buffer)) |
(lambda (buffer) |
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this-buffer-line-start |
(with-current-buffer buffer |
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this-buffer-read-only |
(setq name (buffer-name) |
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(this-buffer-size (buffer-size buffer)) |
file (buffer-file-name)) |
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this-buffer-mode-name |
(cond |
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this-buffer-directory) |
;; Don't mention internal buffers. |
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(with-current-buffer buffer |
((and (string= (substring name 0 1) " ") (null file))) |
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(setq this-buffer-read-only buffer-read-only |
;; Maybe don't mention buffers without files. |
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this-buffer-mode-name mode-name) |
((and files-only (not file))) |
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(unless file |
((string= name "*Buffer List*")) |
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;; No visited file. Check local value of |
;; Otherwise output info. |
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;; list-buffers-directory. |
(t |
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(when (and (boundp 'list-buffers-directory) |
(unless file |
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list-buffers-directory) |
;; No visited file. Check local value of |
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(setq this-buffer-directory list-buffers-directory)))) |
;; list-buffers-directory. |
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(cond |
(when (and (boundp 'list-buffers-directory) |
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;; Don't mention internal buffers. |
list-buffers-directory) |
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((and (string= (substring name 0 1) " ") (null file))) |
(setq file list-buffers-directory))) |
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;; Maybe don't mention buffers without files. |
(list buffer |
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((and files-only (not file))) |
(format "%c%c%c " |
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((string= name "*Buffer List*")) |
(if (eq buffer old-buffer) ?. ? ) |
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;; Otherwise output info. |
;; Handle readonly status. The output buffer is special |
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(t |
;; cased to appear readonly; it is actually made so at a |
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(setq this-buffer-line-start (point)) |
;; later date. |
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;; Identify current buffer. |
(if (or (eq buffer standard-output) |
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(if (eq buffer old-buffer) |
buffer-read-only) |
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(progn |
?% ? ) |
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(setq desired-point (point)) |
;; Identify modified buffers. |
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(princ ".")) |
(if (buffer-modified-p) ?* ? )) |
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(princ " ")) |
name (buffer-size) mode-name file))))) |
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;; Identify modified buffers. |
(buffer-list)))) |
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(princ (if (buffer-modified-p buffer) "*" " ")) |
(dolist (buffer |
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;; Handle readonly status. The output buffer is special |
(if Buffer-menu-sort-column |
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;; cased to appear readonly; it is actually made so at a |
(sort list |
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;; later date. |
(if (eq Buffer-menu-sort-column 3) |
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(princ (if (or (eq buffer standard-output) |
(lambda (a b) |
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this-buffer-read-only) |
(< (nth Buffer-menu-sort-column a) |
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"% " |
(nth Buffer-menu-sort-column b))) |
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" ")) |
(lambda (a b) |
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(princ name) |
(string< (nth Buffer-menu-sort-column a) |
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;; Put the buffer name into a text property |
(nth Buffer-menu-sort-column b))))) |
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;; so we don't have to extract it from the text. |
list)) |
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;; This way we avoid problems with unusual buffer names. |
(if (eq (car buffer) old-buffer) |
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(setq this-buffer-line-start |
(setq desired-point (point))) |
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(+ this-buffer-line-start Buffer-menu-buffer-column)) |
(insert (cadr buffer) |
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(let ((name-end (point))) |
;; Put the buffer name into a text property |
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(indent-to 17 2) |
;; so we don't have to extract it from the text. |
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(put-text-property this-buffer-line-start name-end |
;; This way we avoid problems with unusual buffer names. |
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'buffer-name name) |
(Buffer-menu-buffer+size (nth 2 buffer) |
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(put-text-property this-buffer-line-start (point) |
(int-to-string (nth 3 buffer)) |
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'buffer buffer) |
`(buffer-name ,(nth 2 buffer) |
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(put-text-property this-buffer-line-start name-end |
buffer ,(car buffer) |
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'mouse-face 'highlight) |
face Buffer-menu-buffer-face |
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(put-text-property this-buffer-line-start name-end |
mouse-face highlight |
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'help-echo "mouse-2: select this buffer")) |
help-echo "mouse-2: select this buffer")) |
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(let ((size (format "%8d" this-buffer-size)) |
" " |
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(mode this-buffer-mode-name) |
(if (> (length (nth 4 buffer)) Buffer-menu-mode-width) |
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(excess (- (current-column) 17))) |
(substring (nth 4 buffer) 0 Buffer-menu-mode-width) |
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(while (and (> excess 0) (= (aref size 0) ?\ )) |
(nth 4 buffer))) |
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(setq size (substring size 1) |
(when (nth 5 buffer) |
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excess (1- excess))) |
(indent-to (+ Buffer-menu-buffer-column Buffer-menu-buffer+size-width |
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(princ size) |
Buffer-menu-mode-width 4) 1) |
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(indent-to 27 1) |
(princ (abbreviate-file-name (nth 5 buffer)))) |
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(princ mode)) |
(princ "\n")) |
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(indent-to 40 1) |
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(or file (setq file this-buffer-directory)) |
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(when file |
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(princ (abbreviate-file-name file))) |
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(princ "\n"))))) |
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(Buffer-menu-mode) |
(Buffer-menu-mode) |
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(when Buffer-menu-use-header-line |
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(set (make-local-variable 'Buffer-menu-header-line) |
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(concat " " header)) |
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(setq header-line-format 'Buffer-menu-header-line)) |
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;; DESIRED-POINT doesn't have to be set; it is not when the |
;; DESIRED-POINT doesn't have to be set; it is not when the |
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;; current buffer is not displayed for some reason. |
;; current buffer is not displayed for some reason. |
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(and desired-point |
(and desired-point |