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771
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1 ;;; buff-menu.el --- buffer menu/tab main function and support functions.
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428
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2
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3 ;; Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc.
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771
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4 ;; Copyright (C) 1999, 2000 Andy Piper.
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5 ;; Copyright (C) 2000 Ben Wing.
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6
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771
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7 ;; Maintainer: XEmacs Development Team
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8 ;; Keywords: frames, extensions, internal, dumped
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9
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10 ;; This file is part of XEmacs.
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11
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12 ;; XEmacs is free software; you can redistribute it and/or modify it
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13 ;; under the terms of the GNU General Public License as published by
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14 ;; the Free Software Foundation; either version 2, or (at your option)
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15 ;; any later version.
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16
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17 ;; XEmacs is distributed in the hope that it will be useful, but
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18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 ;; General Public License for more details.
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21
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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24 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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25 ;; 02111-1307, USA.
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26
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27 ;;; Synched up with: FSF 19.34 except as noted.
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28
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29 ;;; Commentary:
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30
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31 ;; This file is dumped with XEmacs.
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32
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33 ;; Edit, delete, or change attributes of all currently active Emacs
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34 ;; buffers from a list summarizing their state. A good way to browse
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35 ;; any special or scratch buffers you have loaded, since you can't find
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36 ;; them by filename. The single entry point is `Buffer-menu-mode',
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37 ;; normally bound to C-x C-b.
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38
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771
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39 ;; Also contains buffers-tab code, because it's used by
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40 ;; switch-to-next-buffer and friends.
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41
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428
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42 ;;; Change Log:
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43
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44 ;; Merged by esr with recent mods to Emacs 19 buff-menu, 23 Mar 1993
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45 ;;
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46 ;; Modified by Bob Weiner, Motorola, Inc., 4/14/89
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47 ;;
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48 ;; Added optional backup argument to 'Buffer-menu-unmark' to make it undelete
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49 ;; current entry and then move to previous one.
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50 ;;
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51 ;; Based on FSF code dating back to 1985.
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52
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53 ;;; Code:
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444
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54
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428
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55 ;;;Trying to preserve the old window configuration works well in
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56 ;;;simple scenarios, when you enter the buffer menu, use it, and exit it.
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57 ;;;But it does strange things when you switch back to the buffer list buffer
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58 ;;;with C-x b, later on, when the window configuration is different.
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59 ;;;The choice seems to be, either restore the window configuration
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60 ;;;in all cases, or in no cases.
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61 ;;;I decided it was better not to restore the window config at all. -- rms.
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62
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63 ;;;But since then, I changed buffer-menu to use the selected window,
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64 ;;;so q now once again goes back to the previous window configuration.
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65
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66 ;;;(defvar Buffer-menu-window-config nil
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67 ;;; "Window configuration saved from entry to `buffer-menu'.")
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68
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69 ; Put buffer *Buffer List* into proper mode right away
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70 ; so that from now on even list-buffers is enough to get a buffer menu.
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71
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72 (defvar Buffer-menu-buffer-column 4)
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73
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74 (defvar Buffer-menu-mode-map nil)
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75
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76 (if Buffer-menu-mode-map
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77 ()
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78 (setq Buffer-menu-mode-map (make-keymap))
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79 (suppress-keymap Buffer-menu-mode-map t)
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80 (set-keymap-name Buffer-menu-mode-map 'Buffer-menu-mode-map) ; XEmacs
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81 (define-key Buffer-menu-mode-map "q" 'Buffer-menu-quit)
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82 (define-key Buffer-menu-mode-map "v" 'Buffer-menu-select)
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83 (define-key Buffer-menu-mode-map "2" 'Buffer-menu-2-window)
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84 (define-key Buffer-menu-mode-map "1" 'Buffer-menu-1-window)
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85 (define-key Buffer-menu-mode-map "f" 'Buffer-menu-this-window)
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86 (define-key Buffer-menu-mode-map "\C-m" 'Buffer-menu-this-window)
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87 (define-key Buffer-menu-mode-map "o" 'Buffer-menu-other-window)
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88 (define-key Buffer-menu-mode-map "\C-o" 'Buffer-menu-switch-other-window)
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89 (define-key Buffer-menu-mode-map "s" 'Buffer-menu-save)
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90 (define-key Buffer-menu-mode-map "d" 'Buffer-menu-delete)
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91 (define-key Buffer-menu-mode-map "k" 'Buffer-menu-delete)
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92 (define-key Buffer-menu-mode-map "\C-d" 'Buffer-menu-delete-backwards)
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93 (define-key Buffer-menu-mode-map "\C-k" 'Buffer-menu-delete)
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3162
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94 (define-key Buffer-menu-mode-map "r" 'Buffer-menu-rename)
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95 (define-key Buffer-menu-mode-map "x" 'Buffer-menu-execute)
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96 (define-key Buffer-menu-mode-map " " 'next-line)
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97 (define-key Buffer-menu-mode-map "n" 'next-line)
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98 (define-key Buffer-menu-mode-map "p" 'previous-line)
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99 (define-key Buffer-menu-mode-map 'backspace 'Buffer-menu-backup-unmark)
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100 (define-key Buffer-menu-mode-map 'delete 'Buffer-menu-backup-unmark)
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101 (define-key Buffer-menu-mode-map "~" 'Buffer-menu-not-modified)
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102 (define-key Buffer-menu-mode-map "?" 'describe-mode)
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103 (define-key Buffer-menu-mode-map "u" 'Buffer-menu-unmark)
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104 (define-key Buffer-menu-mode-map "m" 'Buffer-menu-mark)
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105 (define-key Buffer-menu-mode-map "t" 'Buffer-menu-visit-tags-table)
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106 (define-key Buffer-menu-mode-map "%" 'Buffer-menu-toggle-read-only)
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107 (define-key Buffer-menu-mode-map "g" 'revert-buffer)
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108 (define-key Buffer-menu-mode-map 'button2 'Buffer-menu-mouse-select)
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109 (define-key Buffer-menu-mode-map 'button3 'Buffer-menu-popup-menu)
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110 )
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111
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112 ;; Buffer Menu mode is suitable only for specially formatted data.
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113 (put 'Buffer-menu-mode 'mode-class 'special)
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114
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115 (defun Buffer-menu-mode ()
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116 "Major mode for editing a list of buffers.
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117 Each line describes one of the buffers in Emacs.
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118 Letters do not insert themselves; instead, they are commands.
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119 \\<Buffer-menu-mode-map>
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120 \\[Buffer-menu-mouse-select] -- select buffer you click on, in place of the buffer menu.
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121 \\[Buffer-menu-this-window] -- select current line's buffer in place of the buffer menu.
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122 \\[Buffer-menu-other-window] -- select that buffer in another window,
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123 so the buffer menu buffer remains visible in its window.
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124 \\[Buffer-menu-switch-other-window] -- make another window display that buffer.
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125 \\[Buffer-menu-mark] -- mark current line's buffer to be displayed.
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126 \\[Buffer-menu-select] -- select current line's buffer.
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127 Also show buffers marked with m, in other windows.
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128 \\[Buffer-menu-1-window] -- select that buffer in full-frame window.
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129 \\[Buffer-menu-2-window] -- select that buffer in one window,
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130 together with buffer selected before this one in another window.
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131 \\[Buffer-menu-visit-tags-table] -- visit-tags-table this buffer.
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132 \\[Buffer-menu-not-modified] -- clear modified-flag on that buffer.
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133 \\[Buffer-menu-save] -- mark that buffer to be saved, and move down.
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134 \\[Buffer-menu-delete] -- mark that buffer to be deleted, and move down.
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135 \\[Buffer-menu-delete-backwards] -- mark that buffer to be deleted, and move up.
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136 \\[Buffer-menu-execute] -- delete or save marked buffers.
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137 \\[Buffer-menu-unmark] -- remove all kinds of marks from current line.
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138 With prefix argument, also move up one line.
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139 \\[Buffer-menu-backup-unmark] -- back up a line and remove marks.
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140 \\[Buffer-menu-toggle-read-only] -- toggle read-only status of buffer on this line."
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141 (kill-all-local-variables)
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142 (use-local-map Buffer-menu-mode-map)
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143 (setq major-mode 'Buffer-menu-mode)
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144 (setq mode-name "Buffer Menu")
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145 (make-local-variable 'revert-buffer-function)
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146 (setq revert-buffer-function 'Buffer-menu-revert-function)
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147 (setq truncate-lines t)
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148 (setq buffer-read-only t)
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548
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149 (make-local-hook 'mouse-track-click-hook) ; XEmacs
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150 (add-hook 'mouse-track-click-hook 'Buffer-menu-maybe-mouse-select t t) ; XEmacs
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428
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151 (run-hooks 'buffer-menu-mode-hook))
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152
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153 (defun Buffer-menu-revert-function (ignore1 ignore2)
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154 (list-buffers))
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155
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156 (defun Buffer-menu-buffer (error-if-non-existent-p)
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157 "Return buffer described by this line of buffer menu."
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158 (let* ((where (save-excursion
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159 (beginning-of-line)
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160 (+ (point) Buffer-menu-buffer-column)))
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161 (name (and (not (eobp)) (get-text-property where 'buffer-name))))
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162 (if name
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163 (or (get-buffer name)
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164 (if error-if-non-existent-p
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165 (error "No buffer named `%s'" name)
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166 nil))
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167 (if error-if-non-existent-p
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168 (error "No buffer on this line")
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169 nil))))
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170
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171 (defun buffer-menu (&optional arg)
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172 "Make a menu of buffers so you can save, delete or select them.
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173 With argument, show only buffers that are visiting files.
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174 Type ? after invocation to get help on commands available.
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175 Type q immediately to make the buffer menu go away."
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176 (interactive "P")
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177 ;;; (setq Buffer-menu-window-config (current-window-configuration))
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178 (switch-to-buffer (list-buffers-noselect arg))
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179 (message
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180 "Commands: d, s, x, u; f, o, 1, 2, m, v; ~, %%; q to quit; ? for help."))
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181
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182 (defun buffer-menu-other-window (&optional arg)
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183 "Display a list of buffers in another window.
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184 With the buffer list buffer, you can save, delete or select the buffers.
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185 With argument, show only buffers that are visiting files.
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186 Type ? after invocation to get help on commands available.
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187 Type q immediately to make the buffer menu go away."
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188 (interactive "P")
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189 ;;; (setq Buffer-menu-window-config (current-window-configuration))
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190 (switch-to-buffer-other-window (list-buffers-noselect arg))
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191 (message
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192 "Commands: d, s, x, u; f, o, 1, 2, m, v; ~, %%; q to quit; ? for help."))
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193
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194 (defun Buffer-menu-quit ()
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195 "Quit the buffer menu."
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196 (interactive)
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197 (let ((buffer (current-buffer)))
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198 ;; Switch away from the buffer menu and bury it.
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199 (switch-to-buffer (other-buffer))
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200 (bury-buffer buffer)))
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201
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202 (defun Buffer-menu-mark ()
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203 "Mark buffer on this line for being displayed by \\<Buffer-menu-mode-map>\\[Buffer-menu-select] command."
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204 (interactive)
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205 (beginning-of-line)
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206 (if (looking-at " [-M]")
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207 (ding)
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208 (let ((buffer-read-only nil))
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209 (delete-char 1)
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210 (insert ?>)
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211 (forward-line 1))))
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212
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213 (defun Buffer-menu-unmark (&optional backup)
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214 "Cancel all requested operations on buffer on this line and move down.
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215 Optional ARG means move up."
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216 (interactive "P")
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217 (beginning-of-line)
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218 (if (looking-at " [-M]")
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219 (ding)
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220 (let* ((buf (Buffer-menu-buffer t))
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221 (mod (buffer-modified-p buf))
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222 (readonly (save-excursion (set-buffer buf) buffer-read-only))
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223 (buffer-read-only nil))
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224 (delete-char 3)
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225 (insert (if readonly (if mod " *%" " %") (if mod " * " " ")))))
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226 (forward-line (if backup -1 1)))
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227
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228 (defun Buffer-menu-backup-unmark ()
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229 "Move up and cancel all requested operations on buffer on line above."
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230 (interactive)
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231 (forward-line -1)
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232 (Buffer-menu-unmark)
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233 (forward-line -1))
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234
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235 (defun Buffer-menu-delete (&optional arg)
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236 "Mark buffer on this line to be deleted by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command.
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237 Prefix arg is how many buffers to delete.
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238 Negative arg means delete backwards."
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239 (interactive "p")
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240 (beginning-of-line)
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241 (if (looking-at " [-M]") ;header lines
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242 (ding)
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243 (let ((buffer-read-only nil))
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244 (if (or (null arg) (= arg 0))
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245 (setq arg 1))
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246 (while (> arg 0)
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247 (delete-char 1)
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248 (insert ?D)
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249 (forward-line 1)
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250 (setq arg (1- arg)))
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251 (while (< arg 0)
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252 (delete-char 1)
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253 (insert ?D)
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254 (forward-line -1)
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255 (setq arg (1+ arg))))))
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256
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257 (defun Buffer-menu-delete-backwards (&optional arg)
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258 "Mark buffer on this line to be deleted by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command
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259 and then move up one line. Prefix arg means move that many lines."
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260 (interactive "p")
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261 (Buffer-menu-delete (- (or arg 1)))
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262 (while (looking-at " [-M]")
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263 (forward-line 1)))
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264
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3162
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265 (defun Buffer-menu-rename (newname unique)
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266 "Rename buffer on this line to NEWNAME, immediately.
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267 If given a prefix argument, automatically uniquify. See `rename-buffer'."
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268 (interactive "sNew name for buffer: \np")
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269 (beginning-of-line)
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270 (if (looking-at " [-M]") ;header lines
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271 (ding)
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272 (save-excursion
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273 (set-buffer (Buffer-menu-buffer t))
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274 (rename-buffer newname unique))
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275 (revert-buffer)))
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276
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428
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277 (defun Buffer-menu-save ()
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278 "Mark buffer on this line to be saved by \\<Buffer-menu-mode-map>\\[Buffer-menu-execute] command."
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279 (interactive)
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280 (beginning-of-line)
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281 (if (looking-at " [-M]") ;header lines
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282 (ding)
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283 (let ((buffer-read-only nil))
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284 (forward-char 1)
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285 (delete-char 1)
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286 (insert ?S)
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287 (forward-line 1))))
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288
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289 (defun Buffer-menu-not-modified (&optional arg)
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290 "Mark buffer on this line as unmodified (no changes to save)."
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291 (interactive "P")
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292 (save-excursion
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293 (set-buffer (Buffer-menu-buffer t))
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294 (set-buffer-modified-p arg))
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295 (save-excursion
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296 (beginning-of-line)
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297 (forward-char 1)
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298 (if (= (char-after (point)) (if arg ? ?*))
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299 (let ((buffer-read-only nil))
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300 (delete-char 1)
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301 (insert (if arg ?* ? ))))))
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302
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303 (defun Buffer-menu-execute ()
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304 "Save and/or delete buffers marked with \\<Buffer-menu-mode-map>\\[Buffer-menu-save] or \\<Buffer-menu-mode-map>\\[Buffer-menu-delete] commands."
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305 (interactive)
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306 (save-excursion
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307 (goto-char (point-min))
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308 (forward-line 1)
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309 (while (re-search-forward "^.S" nil t)
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310 (let ((modp nil))
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311 (save-excursion
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312 (set-buffer (Buffer-menu-buffer t))
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313 (save-buffer)
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314 (setq modp (buffer-modified-p)))
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315 (let ((buffer-read-only nil))
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316 (delete-char -1)
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317 (insert (if modp ?* ? ))))))
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318 (save-excursion
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319 (goto-char (point-min))
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320 (forward-line 1)
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321 (let ((buff-menu-buffer (current-buffer))
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322 (buffer-read-only nil))
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323 (while (search-forward "\nD" nil t)
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446
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324 (backward-char 1)
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428
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325 (let ((buf (Buffer-menu-buffer nil)))
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326 (or (eq buf nil)
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327 (eq buf buff-menu-buffer)
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328 (save-excursion (kill-buffer buf))))
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329 (if (Buffer-menu-buffer nil)
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330 (progn (delete-char 1)
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331 (insert ? ))
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332 (delete-region (point) (progn (forward-line 1) (point)))
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446
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333 (backward-char 1))))))
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428
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334
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335 (defun Buffer-menu-select ()
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336 "Select this line's buffer; also display buffers marked with `>'.
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337 You can mark buffers with the \\<Buffer-menu-mode-map>\\[Buffer-menu-mark] command.
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338 This command deletes and replaces all the previously existing windows
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339 in the selected frame."
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340 (interactive)
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341 (let ((buff (Buffer-menu-buffer t))
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444
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342 (menu (current-buffer))
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428
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343 (others ())
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344 tem)
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345 (goto-char (point-min))
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346 (while (search-forward "\n>" nil t)
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347 (setq tem (Buffer-menu-buffer t))
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348 (let ((buffer-read-only nil))
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349 (delete-char -1)
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350 (insert ?\ ))
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351 (or (eq tem buff) (memq tem others) (setq others (cons tem others))))
|
|
|
352 (setq others (nreverse others)
|
|
|
353 tem (/ (1- (frame-height)) (1+ (length others))))
|
|
|
354 (delete-other-windows)
|
|
|
355 (switch-to-buffer buff)
|
|
|
356 (or (eq menu buff)
|
|
|
357 (bury-buffer menu))
|
|
|
358 (if (equal (length others) 0)
|
|
|
359 (progn
|
|
|
360 ;;; ;; Restore previous window configuration before displaying
|
|
|
361 ;;; ;; selected buffers.
|
|
|
362 ;;; (if Buffer-menu-window-config
|
|
|
363 ;;; (progn
|
|
|
364 ;;; (set-window-configuration Buffer-menu-window-config)
|
|
|
365 ;;; (setq Buffer-menu-window-config nil)))
|
|
|
366 (switch-to-buffer buff))
|
|
|
367 (while others
|
|
|
368 (split-window nil tem)
|
|
|
369 (other-window 1)
|
|
|
370 (switch-to-buffer (car others))
|
|
|
371 (setq others (cdr others)))
|
|
|
372 (other-window 1) ;back to the beginning!
|
|
|
373 )))
|
|
|
374
|
|
|
375
|
|
|
376
|
|
442
|
377 (eval-when-compile (autoload 'visit-tags-table "etags"))
|
|
|
378
|
|
428
|
379 (defun Buffer-menu-visit-tags-table ()
|
|
|
380 "Visit the tags table in the buffer on this line. See `visit-tags-table'."
|
|
|
381 (interactive)
|
|
|
382 (let ((file (buffer-file-name (Buffer-menu-buffer t))))
|
|
|
383 (if file
|
|
|
384 (visit-tags-table file)
|
|
|
385 (error "Specified buffer has no file"))))
|
|
|
386
|
|
|
387 (defun Buffer-menu-1-window ()
|
|
|
388 "Select this line's buffer, alone, in full frame."
|
|
|
389 (interactive)
|
|
|
390 (switch-to-buffer (Buffer-menu-buffer t))
|
|
|
391 (bury-buffer (other-buffer))
|
|
|
392 (delete-other-windows)
|
|
|
393 ;; XEmacs:
|
|
|
394 ;; This is to get w->force_start set to nil. Don't ask me, I only work here.
|
|
|
395 (set-window-buffer (selected-window) (current-buffer)))
|
|
|
396
|
|
|
397 (defun Buffer-menu-mouse-select (event)
|
|
|
398 "Select the buffer whose line you click on."
|
|
|
399 (interactive "e")
|
|
|
400 (let (buffer)
|
|
|
401 (save-excursion
|
|
|
402 (set-buffer (event-buffer event)) ; XEmacs
|
|
|
403 (save-excursion
|
|
|
404 (goto-char (event-point event)) ; XEmacs
|
|
|
405 (setq buffer (Buffer-menu-buffer t))))
|
|
|
406 (select-window (event-window event)) ; XEmacs
|
|
|
407 (if (and (window-dedicated-p (selected-window))
|
|
|
408 (eq (selected-window) (frame-root-window)))
|
|
|
409 (switch-to-buffer-other-frame buffer)
|
|
|
410 (switch-to-buffer buffer))))
|
|
|
411
|
|
|
412 ;; XEmacs
|
|
|
413 (defun Buffer-menu-maybe-mouse-select (event &optional click-count)
|
|
|
414 (interactive "e")
|
|
|
415 (and (>= click-count 2)
|
|
|
416 (let ((buffer (current-buffer))
|
|
|
417 (point (point))
|
|
|
418 (config (current-window-configuration)))
|
|
|
419 (condition-case nil
|
|
|
420 (progn
|
|
|
421 (Buffer-menu-mouse-select event)
|
|
|
422 t)
|
|
|
423 (error
|
|
|
424 (set-window-configuration config)
|
|
|
425 (set-buffer buffer)
|
|
|
426 (goto-char point)
|
|
|
427 nil)))))
|
|
|
428
|
|
|
429 (defun Buffer-menu-this-window ()
|
|
|
430 "Select this line's buffer in this window."
|
|
|
431 (interactive)
|
|
|
432 (switch-to-buffer (Buffer-menu-buffer t)))
|
|
|
433
|
|
|
434 (defun Buffer-menu-other-window ()
|
|
|
435 "Select this line's buffer in other window, leaving buffer menu visible."
|
|
|
436 (interactive)
|
|
|
437 (switch-to-buffer-other-window (Buffer-menu-buffer t)))
|
|
|
438
|
|
|
439 (defun Buffer-menu-switch-other-window ()
|
|
|
440 "Make the other window select this line's buffer.
|
|
|
441 The current window remains selected."
|
|
|
442 (interactive)
|
|
|
443 (display-buffer (Buffer-menu-buffer t)))
|
|
|
444
|
|
|
445 (defun Buffer-menu-2-window ()
|
|
|
446 "Select this line's buffer, with previous buffer in second window."
|
|
|
447 (interactive)
|
|
|
448 (let ((buff (Buffer-menu-buffer t))
|
|
|
449 (menu (current-buffer))
|
|
|
450 (pop-up-windows t))
|
|
|
451 (delete-other-windows)
|
|
|
452 (switch-to-buffer (other-buffer))
|
|
|
453 (pop-to-buffer buff)
|
|
|
454 (bury-buffer menu)))
|
|
|
455
|
|
|
456 (defun Buffer-menu-toggle-read-only ()
|
|
|
457 "Toggle read-only status of buffer on this line, perhaps via version control."
|
|
|
458 (interactive)
|
|
|
459 (let (char)
|
|
|
460 (save-excursion
|
|
|
461 (set-buffer (Buffer-menu-buffer t))
|
|
|
462 (modeline-toggle-read-only)
|
|
|
463 (setq char (if buffer-read-only ?% ? )))
|
|
|
464 (save-excursion
|
|
|
465 (beginning-of-line)
|
|
|
466 (forward-char 2)
|
|
|
467 (if (/= (following-char) char)
|
|
|
468 (let (buffer-read-only)
|
|
|
469 (delete-char 1)
|
|
|
470 (insert char))))))
|
|
|
471
|
|
|
472 ;; XEmacs
|
|
|
473 (defvar Buffer-menu-popup-menu
|
|
|
474 '("Buffer Commands"
|
|
|
475 ["Select Buffer" Buffer-menu-select t]
|
|
|
476 ["Select buffer Other Window" Buffer-menu-other-window t]
|
|
|
477 ["Clear Buffer Modification Flag" Buffer-menu-not-modified t]
|
|
|
478 "----"
|
|
|
479 ["Mark Buffer for Selection" Buffer-menu-mark t]
|
|
|
480 ["Mark Buffer for Save" Buffer-menu-save t]
|
|
|
481 ["Mark Buffer for Deletion" Buffer-menu-delete t]
|
|
|
482 ["Unmark Buffer" Buffer-menu-unmark t]
|
|
|
483 "----"
|
|
|
484 ["Delete/Save Marked Buffers" Buffer-menu-execute t]
|
|
|
485 ))
|
|
|
486
|
|
|
487 ;; XEmacs
|
|
|
488 (defun Buffer-menu-popup-menu (event)
|
|
|
489 (interactive "e")
|
|
|
490 (mouse-set-point event)
|
|
|
491 (beginning-of-line)
|
|
|
492 (let ((buffer (Buffer-menu-buffer nil)))
|
|
|
493 (if buffer
|
|
|
494 (popup-menu
|
|
|
495 (nconc (list (car Buffer-menu-popup-menu)
|
|
|
496 (concat
|
|
|
497 "Commands on buffer \"" (buffer-name buffer) "\":")
|
|
|
498 "----")
|
|
|
499 (cdr Buffer-menu-popup-menu)))
|
|
|
500 (error "no buffer on this line"))))
|
|
|
501
|
|
|
502
|
|
|
503 ;; XEmacs
|
|
|
504 (defvar list-buffers-header-line
|
|
444
|
505 (concat " MR Buffer Size Mode File\n"
|
|
|
506 " -- ------ ---- ---- ----\n"))
|
|
428
|
507
|
|
|
508 ;; XEmacs
|
|
|
509 (defvar list-buffers-identification 'default-list-buffers-identification
|
|
|
510 "String used to identify this buffer, or a function of one argument
|
|
|
511 to generate such a string. This variable is always buffer-local.")
|
|
|
512 (make-variable-buffer-local 'list-buffers-identification)
|
|
|
513
|
|
|
514 ;; XEmacs
|
|
|
515 ;;;###autoload
|
|
|
516 (defvar list-buffers-directory nil)
|
|
|
517
|
|
|
518 ;;;###autoload
|
|
|
519 (make-variable-buffer-local 'list-buffers-directory)
|
|
|
520
|
|
|
521 ;; #### not synched
|
|
|
522 (defun default-list-buffers-identification (output)
|
|
|
523 (save-excursion
|
|
|
524 (let ((file (or (buffer-file-name (current-buffer))
|
|
776
|
525 (and-boundp 'list-buffers-directory
|
|
|
526 list-buffers-directory)))
|
|
428
|
527 (size (buffer-size))
|
|
|
528 (mode mode-name)
|
|
|
529 eob p s col)
|
|
|
530 (set-buffer output)
|
|
|
531 (end-of-line)
|
|
|
532 (setq eob (point))
|
|
|
533 (prin1 size output)
|
|
|
534 (setq p (point))
|
|
|
535 ;; right-justify the size
|
|
|
536 (move-to-column 19 t)
|
|
|
537 (setq col (point))
|
|
|
538 (if (> eob col)
|
|
|
539 (goto-char eob))
|
|
|
540 (setq s (- 6 (- p col)))
|
|
|
541 (while (> s 0) ; speed/consing tradeoff...
|
|
|
542 (insert ? )
|
|
|
543 (setq s (1- s)))
|
|
|
544 (end-of-line)
|
|
|
545 (indent-to 27 1)
|
|
|
546 (insert mode)
|
|
|
547 (if (not file)
|
|
|
548 nil
|
|
|
549 ;; if the mode-name is really long, clip it for the filename
|
|
|
550 (if (> 0 (setq s (- 39 (current-column))))
|
|
|
551 (delete-char (max s (- eob (point)))))
|
|
|
552 (indent-to 40 1)
|
|
|
553 (insert file)))))
|
|
|
554
|
|
|
555 ;; #### not synched
|
|
|
556 (defun list-buffers-internal (output &optional predicate)
|
|
|
557 (let ((current (current-buffer))
|
|
|
558 (buffers (buffer-list)))
|
|
|
559 (save-excursion
|
|
|
560 (set-buffer output)
|
|
|
561 (setq buffer-read-only nil)
|
|
|
562 (erase-buffer)
|
|
|
563 (buffer-disable-undo output)
|
|
|
564 (insert list-buffers-header-line)
|
|
|
565
|
|
|
566 (while buffers
|
|
|
567 (let* ((col1 19)
|
|
|
568 (buffer (car buffers))
|
|
|
569 (name (buffer-name buffer))
|
|
|
570 this-buffer-line-start)
|
|
|
571 (setq buffers (cdr buffers))
|
|
|
572 (cond ((null name)) ;deleted buffer
|
|
|
573 ((and predicate
|
|
|
574 (not (if (stringp predicate)
|
|
|
575 (string-match predicate name)
|
|
|
576 (funcall predicate buffer))))
|
|
|
577 nil)
|
|
|
578 (t
|
|
|
579 (set-buffer buffer)
|
|
|
580 (let ((ro buffer-read-only)
|
|
|
581 (id list-buffers-identification))
|
|
|
582 (set-buffer output)
|
|
|
583 (setq this-buffer-line-start (point))
|
|
|
584 (insert (if (eq buffer current)
|
|
|
585 (progn (setq current (point)) ?\.)
|
|
|
586 ?\ ))
|
|
|
587 (insert (if (buffer-modified-p buffer)
|
|
444
|
588 ?\*
|
|
428
|
589 ?\ ))
|
|
|
590 (insert (if ro
|
|
|
591 ?\%
|
|
|
592 ?\ ))
|
|
|
593 (if (string-match "[\n\"\\ \t]" name)
|
|
|
594 (let ((print-escape-newlines t))
|
|
|
595 (prin1 name output))
|
|
|
596 (insert ?\ name))
|
|
|
597 (indent-to col1 1)
|
|
|
598 (cond ((stringp id)
|
|
|
599 (insert id))
|
|
|
600 (id
|
|
|
601 (set-buffer buffer)
|
|
|
602 (condition-case e
|
|
|
603 (funcall id output)
|
|
|
604 (error
|
|
|
605 (princ "***" output) (prin1 e output)))
|
|
|
606 (set-buffer output)
|
|
|
607 (goto-char (point-max)))))
|
|
|
608 (put-nonduplicable-text-property this-buffer-line-start
|
|
|
609 (point)
|
|
|
610 'buffer-name name)
|
|
|
611 (put-nonduplicable-text-property this-buffer-line-start
|
|
|
612 (point)
|
|
|
613 'highlight t)
|
|
|
614 (insert ?\n)))))
|
|
|
615
|
|
|
616 (Buffer-menu-mode)
|
|
|
617 (if (not (bufferp current))
|
|
|
618 (goto-char current)))))
|
|
|
619 ;(define-key ctl-x-map "\C-b" 'list-buffers)
|
|
|
620
|
|
|
621 (defun list-buffers (&optional files-only)
|
|
|
622 "Display a list of names of existing buffers.
|
|
|
623 The list is displayed in a buffer named `*Buffer List*'.
|
|
|
624 Note that buffers with names starting with spaces are omitted.
|
|
444
|
625 Non-nil optional arg FILES-ONLY means mention only file buffers.
|
|
428
|
626
|
|
|
627 The M column contains a * for buffers that are modified.
|
|
|
628 The R column contains a % for buffers that are read-only."
|
|
|
629 (interactive (list (if current-prefix-arg t nil))) ; XEmacs
|
|
|
630 (display-buffer (list-buffers-noselect files-only)))
|
|
|
631
|
|
|
632 ;; #### not synched
|
|
|
633 (defun list-buffers-noselect (&optional files-only)
|
|
|
634 "Create and return a buffer with a list of names of existing buffers.
|
|
|
635 The buffer is named `*Buffer List*'.
|
|
|
636 Note that buffers with names starting with spaces are omitted.
|
|
444
|
637 Non-nil optional arg FILES-ONLY means mention only file buffers.
|
|
428
|
638
|
|
|
639 The M column contains a * for buffers that are modified.
|
|
|
640 The R column contains a % for buffers that are read-only."
|
|
|
641 (let ((buffer (get-buffer-create "*Buffer List*")))
|
|
|
642 (list-buffers-internal buffer
|
|
|
643 (if (memq files-only '(t nil))
|
|
|
644 #'(lambda (b)
|
|
|
645 (let ((n (buffer-name b)))
|
|
|
646 (cond ((and (/= 0 (length n))
|
|
|
647 (= (aref n 0) ?\ ))
|
|
|
648 ;;don't mention if starts with " "
|
|
|
649 nil)
|
|
|
650 (files-only
|
|
|
651 (buffer-file-name b))
|
|
|
652 (t
|
|
|
653 t))))
|
|
|
654 files-only))
|
|
|
655 buffer))
|
|
|
656
|
|
442
|
657 (defun buffers-menu-omit-invisible-buffers (buf)
|
|
|
658 "For use as a value of `buffers-menu-omit-function'.
|
|
|
659 Omits normally invisible buffers (those whose name begins with a space)."
|
|
|
660 (not (null (string-match "\\` " (buffer-name buf)))))
|
|
|
661
|
|
771
|
662 ;;; The Buffers tab
|
|
|
663
|
|
|
664 ;; Some of this is taken from the buffer-menu stuff in menubar-items.el
|
|
|
665
|
|
|
666 (defgroup buffers-tab nil
|
|
|
667 "Customization of `Buffers' tab."
|
|
|
668 :group 'gutter)
|
|
|
669
|
|
|
670 (defcustom buffers-tab-max-size 6
|
|
|
671 "*Maximum number of entries which may appear on the \"Buffers\" tab.
|
|
|
672 If this is 10, then only the ten most-recently-selected buffers will be
|
|
|
673 shown. If this is nil, then all buffers will be shown. Setting this to
|
|
|
674 a large number or nil will slow down tab responsiveness."
|
|
|
675 :type '(choice (const :tag "Show all" nil)
|
|
|
676 (integer 6))
|
|
|
677 :group 'buffers-tab)
|
|
|
678
|
|
|
679 (defcustom buffers-tab-switch-to-buffer-function 'buffers-tab-switch-to-buffer
|
|
|
680 "*The function to call to select a buffer from the buffers tab.
|
|
|
681 `switch-to-buffer' is a good choice, as is `pop-to-buffer'."
|
|
|
682 :type '(radio (function-item switch-to-buffer)
|
|
|
683 (function-item pop-to-buffer)
|
|
|
684 (function :tag "Other"))
|
|
|
685 :group 'buffers-tab)
|
|
|
686
|
|
|
687 (defcustom buffers-tab-omit-function 'buffers-menu-omit-invisible-buffers
|
|
|
688 "*If non-nil, a function specifying the buffers to omit from the buffers tab.
|
|
|
689 This is passed a buffer and should return non-nil if the buffer should be
|
|
|
690 omitted. The default value `buffers-menu-omit-invisible-buffers' omits
|
|
|
691 buffers that are normally considered \"invisible\" (those whose name
|
|
|
692 begins with a space)."
|
|
|
693 :type '(choice (const :tag "None" nil)
|
|
|
694 function)
|
|
|
695 :group 'buffers-tab)
|
|
|
696
|
|
|
697 (defcustom buffers-tab-selection-function 'select-buffers-tab-buffers-by-mode
|
|
|
698 "*If non-nil, a function specifying the buffers to select from the
|
|
|
699 buffers tab. This is passed two buffers and should return non-nil if
|
|
|
700 the second buffer should be selected. The default value
|
|
|
701 `select-buffers-tab-buffers-by-mode' groups buffers by major mode and
|
|
|
702 by `buffers-tab-grouping-regexp'."
|
|
|
703
|
|
|
704 :type '(choice (const :tag "None" nil)
|
|
|
705 function)
|
|
|
706 :group 'buffers-tab)
|
|
|
707
|
|
|
708 (defcustom buffers-tab-filter-functions (list buffers-tab-selection-function)
|
|
|
709 "*If non-nil, a list of functions specifying the buffers to select
|
|
|
710 from the buffers tab.
|
|
|
711 Each function in the list is passed two buffers, the buffer to
|
|
|
712 potentially select and the context buffer, and should return non-nil
|
|
|
713 if the first buffer should be selected. The default value groups
|
|
|
714 buffers by major mode and by `buffers-tab-grouping-regexp'."
|
|
|
715
|
|
|
716 :type '(choice (const :tag "None" nil)
|
|
|
717 sexp)
|
|
|
718 :group 'buffers-tab)
|
|
|
719
|
|
|
720 (defcustom buffers-tab-sort-function nil
|
|
|
721 "*If non-nil, a function specifying the buffers to select from the
|
|
|
722 buffers tab. This is passed the buffer list and returns the list in the
|
|
|
723 order desired for the tab widget. The default value `nil' leaves the
|
|
|
724 list in `buffer-list' order (usual most-recently-selected-first)."
|
|
|
725
|
|
|
726 :type '(choice (const :tag "None" nil)
|
|
|
727 function)
|
|
|
728 :group 'buffers-tab)
|
|
|
729
|
|
|
730 (make-face 'buffers-tab "Face for displaying the buffers tab.")
|
|
|
731 (set-face-parent 'buffers-tab 'default)
|
|
|
732
|
|
|
733 (defcustom buffers-tab-face 'buffers-tab
|
|
|
734 "*Face to use for displaying the buffers tab."
|
|
|
735 :type 'face
|
|
|
736 :group 'buffers-tab)
|
|
|
737
|
|
|
738 (defcustom buffers-tab-grouping-regexp
|
|
|
739 '("^\\(gnus-\\|message-mode\\|mime/viewer-mode\\)"
|
|
|
740 "^\\(emacs-lisp-\\|lisp-\\)")
|
|
|
741 "*If non-nil, a list of regular expressions for buffer grouping.
|
|
|
742 Each regular expression is applied to the current major-mode symbol
|
|
|
743 name and mode-name, if it matches then any other buffers that match
|
|
|
744 the same regular expression be added to the current group."
|
|
|
745 :type '(choice (const :tag "None" nil)
|
|
|
746 sexp)
|
|
|
747 :group 'buffers-tab)
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|
|
748
|
|
|
749 (defcustom buffers-tab-format-buffer-line-function 'format-buffers-tab-line
|
|
|
750 "*The function to call to return a string to represent a buffer in the
|
|
|
751 buffers tab. The function is passed a buffer and should return a
|
|
|
752 string. The default value `format-buffers-tab-line' just returns the
|
|
|
753 name of the buffer, optionally truncated to
|
|
|
754 `buffers-tab-max-buffer-line-length'. Also check out
|
|
|
755 `slow-format-buffers-menu-line' which returns a whole bunch of info
|
|
|
756 about a buffer."
|
|
|
757 :type 'function
|
|
|
758 :group 'buffers-tab)
|
|
|
759
|
|
|
760 (defvar buffers-tab-default-buffer-line-length
|
|
|
761 (make-specifier-and-init 'generic '((global ((default) . 25))) t)
|
|
|
762 "*Maximum length of text which may appear in a \"Buffers\" tab.
|
|
|
763 This is a specifier, use set-specifier to modify it.")
|
|
|
764
|
|
|
765 (defcustom buffers-tab-max-buffer-line-length
|
|
|
766 (specifier-instance buffers-tab-default-buffer-line-length)
|
|
|
767 "*Maximum length of text which may appear in a \"Buffers\" tab.
|
|
|
768 Buffer names over this length will be truncated with elipses.
|
|
|
769 If this is 0, then the full buffer name will be shown."
|
|
|
770 :type '(choice (const :tag "Show all" 0)
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|
|
771 (integer 25))
|
|
|
772 :group 'buffers-tab
|
|
|
773 :set #'(lambda (var val)
|
|
|
774 (set-specifier buffers-tab-default-buffer-line-length val)
|
|
|
775 (setq buffers-tab-max-buffer-line-length val)))
|
|
|
776
|
|
|
777 (defun buffers-tab-switch-to-buffer (buffer)
|
|
|
778 "For use as a value for `buffers-tab-switch-to-buffer-function'."
|
|
|
779 (unless (eq (window-buffer) buffer)
|
|
|
780 ;; this used to add the norecord flag to both calls below.
|
|
|
781 ;; this is bogus because it is a pervasive assumption in XEmacs
|
|
|
782 ;; that the current buffer is at the front of the buffers list.
|
|
|
783 ;; for example, select an item and then do M-C-l
|
|
|
784 ;; (switch-to-other-buffer). Things get way confused.
|
|
|
785 (if (> (length (windows-of-buffer buffer)) 0)
|
|
|
786 (select-window (car (windows-of-buffer buffer)))
|
|
|
787 (switch-to-buffer buffer))))
|
|
|
788
|
|
|
789 (defun select-buffers-tab-buffers-by-mode (buffer-to-select buf1)
|
|
|
790 "For use as a value of `buffers-tab-selection-function'.
|
|
|
791 This selects buffers by major mode `buffers-tab-grouping-regexp'."
|
|
|
792 (let ((mode1 (symbol-name (symbol-value-in-buffer 'major-mode buf1)))
|
|
|
793 (mode2 (symbol-name (symbol-value-in-buffer 'major-mode
|
|
|
794 buffer-to-select)))
|
|
|
795 (modenm1 (symbol-value-in-buffer 'mode-name buf1))
|
|
|
796 (modenm2 (symbol-value-in-buffer 'mode-name buffer-to-select)))
|
|
|
797 (cond ((or (eq mode1 mode2)
|
|
|
798 (eq modenm1 modenm2)
|
|
|
799 (and (string-match "^[^-]+-" mode1)
|
|
|
800 (string-match
|
|
|
801 (concat "^" (regexp-quote
|
|
|
802 (substring mode1 0 (match-end 0))))
|
|
|
803 mode2))
|
|
|
804 (and buffers-tab-grouping-regexp
|
|
|
805 (find-if #'(lambda (x)
|
|
|
806 (or
|
|
|
807 (and (string-match x mode1)
|
|
|
808 (string-match x mode2))
|
|
|
809 (and (string-match x modenm1)
|
|
|
810 (string-match x modenm2))))
|
|
|
811 buffers-tab-grouping-regexp)))
|
|
|
812 t)
|
|
|
813 (t nil))))
|
|
|
814
|
|
|
815 (defun format-buffers-tab-line (buffer)
|
|
|
816 "For use as a value of `buffers-tab-format-buffer-line-function'.
|
|
|
817 This just returns the buffer's name, optionally truncated."
|
|
|
818 (let ((len (specifier-instance buffers-tab-default-buffer-line-length)))
|
|
|
819 (if (and (> len 0)
|
|
|
820 (> (length (buffer-name buffer)) len))
|
|
|
821 (if (string-match ".*<.>$" (buffer-name buffer))
|
|
|
822 (concat (substring (buffer-name buffer)
|
|
|
823 0 (- len 6)) "..."
|
|
|
824 (substring (buffer-name buffer) -3))
|
|
|
825 (concat (substring (buffer-name buffer)
|
|
|
826 0 (- len 3)) "..."))
|
|
|
827 (buffer-name buffer))))
|
|
|
828
|
|
|
829 (defsubst build-buffers-tab-internal (buffers)
|
|
|
830 (let ((selected t))
|
|
|
831 (mapcar
|
|
|
832 #'(lambda (buffer)
|
|
|
833 (prog1
|
|
|
834 (vector
|
|
|
835 (funcall buffers-tab-format-buffer-line-function
|
|
|
836 buffer)
|
|
|
837 (list buffers-tab-switch-to-buffer-function
|
|
|
838 (buffer-name buffer))
|
|
|
839 :selected selected)
|
|
|
840 (when selected (setq selected nil))))
|
|
|
841 buffers)))
|
|
|
842
|
|
|
843 ;;; #### SJT would like this function to have a sort function list. I
|
|
|
844 ;;; don't see how this could work given that sorting is not
|
|
|
845 ;;; cumulative --andyp.
|
|
|
846 (defun buffers-tab-items (&optional in-deletion frame force-selection)
|
|
|
847 "Return a list of tab instantiators based on the current buffers list.
|
|
|
848 This function is used as the tab filter for the top-level buffers
|
|
|
849 \"Buffers\" tab. It dynamically creates a list of tab instantiators
|
|
|
850 to use as the contents of the tab. The contents and order of the list
|
|
|
851 is controlled by `buffers-tab-filter-functions' which by default
|
|
|
852 groups buffers according to major mode and removes invisible buffers.
|
|
|
853 You can control how many buffers will be shown by setting
|
|
|
854 `buffers-tab-max-size'. You can control the text of the tab items by
|
|
|
855 redefining the function `format-buffers-menu-line'."
|
|
|
856 (save-match-data
|
|
|
857 ;; NB it is too late if we run the omit function as part of the
|
|
|
858 ;; filter functions because we need to know which buffer is the
|
|
|
859 ;; context buffer before they get run.
|
|
|
860 (let* ((buffers (delete-if
|
|
|
861 buffers-tab-omit-function (buffer-list frame)))
|
|
|
862 (first-buf (car buffers)))
|
|
|
863 ;; maybe force the selected window
|
|
|
864 (when (and force-selection
|
|
|
865 (not in-deletion)
|
|
|
866 (not (eq first-buf (window-buffer (selected-window frame)))))
|
|
|
867 (setq buffers (cons (window-buffer (selected-window frame))
|
|
|
868 (delq first-buf buffers))))
|
|
|
869 ;; if we're in deletion ignore the current buffer
|
|
|
870 (when in-deletion
|
|
|
871 (setq buffers (delq (current-buffer) buffers))
|
|
|
872 (setq first-buf (car buffers)))
|
|
|
873 ;; filter buffers
|
|
|
874 (when buffers-tab-filter-functions
|
|
|
875 (setq buffers
|
|
|
876 (delete-if
|
|
|
877 #'null
|
|
|
878 (mapcar #'(lambda (buf)
|
|
|
879 (let ((tmp-buf buf))
|
|
|
880 (mapc #'(lambda (fun)
|
|
|
881 (unless (funcall fun buf first-buf)
|
|
|
882 (setq tmp-buf nil)))
|
|
|
883 buffers-tab-filter-functions)
|
|
|
884 tmp-buf))
|
|
|
885 buffers))))
|
|
|
886 ;; maybe shorten list of buffers
|
|
|
887 (and (integerp buffers-tab-max-size)
|
|
|
888 (> buffers-tab-max-size 1)
|
|
|
889 (> (length buffers) buffers-tab-max-size)
|
|
|
890 (setcdr (nthcdr (1- buffers-tab-max-size) buffers) nil))
|
|
|
891 ;; sort buffers in group (default is most-recently-selected)
|
|
|
892 (when buffers-tab-sort-function
|
|
|
893 (setq buffers (funcall buffers-tab-sort-function buffers)))
|
|
|
894 ;; convert list of buffers to list of structures used by tab widget
|
|
|
895 (setq buffers (build-buffers-tab-internal buffers))
|
|
|
896 buffers)))
|
|
|
897
|
|
428
|
898 (provide 'buff-menu)
|
|
|
899
|
|
|
900 ;;; buff-menu.el ends here
|
