lisp/ibuf-ext.el

   1 ;;; ibuf-ext.el --- extensions for ibuffer
   2
   3 ;; Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
   4
   5 ;; Author: Colin Walters <walters@verbum.org>
   6 ;; Created: 2 Dec 2001
   7 ;; Keywords: buffer, convenience
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; This program is free software; you can redistribute it and/or
  12 ;; modify it under the terms of the GNU General Public License as
  13 ;; published by the Free Software Foundation; either version 2, or (at
  14 ;; your option) any later version.
  15
  16 ;; This program is distributed in the hope that it will be useful, but
  17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19 ;; General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with this program ; see the file COPYING.  If not, write to
  23 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;;; Commentary:
  27
  28 ;; These functions should be automatically loaded when called, but you
  29 ;; can explicity (require 'ibuf-ext) in your ~/.emacs to have them
  30 ;; preloaded.
  31
  32 ;;; Code:
  33
  34 (require 'ibuffer)
  35
  36 (eval-when-compile
  37   (require 'derived)
  38   (require 'ibuf-macs)
  39   (require 'cl))
  40
  41 ;;; Utility functions
  42 (defun ibuffer-delete-alist (key alist)
  43   "Delete all entries in ALIST that have a key equal to KEY."
  44   (let (entry)
  45     (while (setq entry (assoc key alist))
  46       (setq alist (delete entry alist)))
  47     alist))
  48
  49 (defun ibuffer-split-list (ibuffer-split-list-fn ibuffer-split-list-elts)
  50   (let ((hip-crowd nil)
  51         (lamers nil))
  52     (dolist (ibuffer-split-list-elt ibuffer-split-list-elts)
  53       (if (funcall ibuffer-split-list-fn ibuffer-split-list-elt)
  54           (push ibuffer-split-list-elt hip-crowd)
  55         (push ibuffer-split-list-elt lamers)))
  56     ;; Too bad Emacs Lisp doesn't have multiple values.
  57     (list (nreverse hip-crowd) (nreverse lamers))))
  58
  59 (defcustom ibuffer-never-show-predicates nil
  60   "A list of predicates (a regexp or function) for buffers not to display.
  61 If a regexp, then it will be matched against the buffer's name.
  62 If a function, it will be called with the buffer as an argument, and
  63 should return non-nil if this buffer should not be shown."
  64   :type '(repeat (choice regexp function))
  65   :group 'ibuffer)
  66
  67 (defcustom ibuffer-always-show-predicates nil
  68   "A list of predicates (a regexp or function) for buffers to always display.
  69 If a regexp, then it will be matched against the buffer's name.
  70 If a function, it will be called with the buffer as an argument, and
  71 should return non-nil if this buffer should be shown.
  72 Note that buffers matching one of these predicates will be shown
  73 regardless of any active filters in this buffer."
  74   :type '(repeat (choice regexp function))
  75   :group 'ibuffer)
  76
  77 (defvar ibuffer-tmp-hide-regexps nil
  78   "A list of regexps which should match buffer names to not show.")
  79
  80 (defvar ibuffer-tmp-show-regexps nil
  81   "A list of regexps which should match buffer names to always show.")
  82
  83 (defvar ibuffer-auto-mode nil
  84   "If non-nil, Ibuffer auto-mode should be enabled for this buffer.
  85 Do not set this variable directly!  Use the function
  86 `ibuffer-auto-mode' instead.")
  87
  88 (defvar ibuffer-auto-buffers-changed nil)
  89
  90 (defcustom ibuffer-saved-filters '(("gnus"
  91                                     ((or (mode . message-mode)
  92                                          (mode . mail-mode)
  93                                          (mode . gnus-group-mode)
  94                                          (mode . gnus-summary-mode)
  95                                          (mode . gnus-article-mode))))
  96                                    ("programming"
  97                                     ((or (mode . emacs-lisp-mode)
  98                                          (mode . cperl-mode)
  99                                          (mode . c-mode)
 100                                          (mode . java-mode)
 101                                          (mode . idl-mode)
 102                                          (mode . lisp-mode)))))
 103
 104   "An alist of filter qualifiers to switch between.
 105
 106 This variable should look like ((\"STRING\" QUALIFIERS)
 107                                 (\"STRING\" QUALIFIERS) ...), where
 108 QUALIFIERS is a list of the same form as
 109 `ibuffer-filtering-qualifiers'.
 110 See also the variables `ibuffer-filtering-qualifiers',
 111 `ibuffer-filtering-alist', and the functions
 112 `ibuffer-switch-to-saved-filters', `ibuffer-save-filters'."
 113   :type '(repeat sexp)
 114   :group 'ibuffer)
 115
 116 (defvar ibuffer-filtering-qualifiers nil
 117   "A list like (SYMBOL . QUALIFIER) which filters the current buffer list.
 118 See also `ibuffer-filtering-alist'.")
 119
 120 ;; This is now frobbed by `define-ibuffer-filter'.
 121 (defvar ibuffer-filtering-alist nil
 122   "An alist of (SYMBOL DESCRIPTION FUNCTION) which describes a filter.
 123
 124 You most likely do not want to modify this variable directly; see
 125 `define-ibuffer-filter'.
 126
 127 SYMBOL is the symbolic name of the filter.  DESCRIPTION is used when
 128 displaying information to the user.  FUNCTION is given a buffer and
 129 the value of the qualifier, and returns non-nil if and only if the
 130 buffer should be displayed.")
 131
 132 (defcustom ibuffer-filter-format-alist nil
 133   "An alist which has special formats used when a filter is active.
 134 The contents of this variable should look like:
 135  ((FILTER (FORMAT FORMAT ...)) (FILTER (FORMAT FORMAT ...)) ...)
 136
 137 For example, suppose that when you add a filter for buffers whose
 138 major mode is `emacs-lisp-mode', you only want to see the mark and the
 139 name of the buffer.  You could accomplish that by adding:
 140  (mode ((mark \" \" name)))
 141 to this variable."
 142   :type '(repeat (list :tag "Association" (symbol :tag "Filter")
 143                        (list :tag "Formats" (repeat (sexp :tag "Format")))))
 144   :group 'ibuffer)
 145
 146 (defvar ibuffer-cached-filter-formats nil)
 147 (defvar ibuffer-compiled-filter-formats nil)
 148
 149 (defvar ibuffer-filter-groups nil
 150   "A list like ((\"NAME\" ((SYMBOL . QUALIFIER) ...) ...) which groups buffers.
 151 The SYMBOL should be one from `ibuffer-filtering-alist'.
 152 The QUALIFIER should be the same as QUALIFIER in
 153 `ibuffer-filtering-qualifiers'.")
 154
 155 (defcustom ibuffer-show-empty-filter-groups t
 156   "If non-nil, then show the names of filter groups which are empty."
 157   :type 'boolean
 158   :group 'ibuffer)
 159
 160 (defcustom ibuffer-saved-filter-groups nil
 161
 162   "An alist of filtering groups to switch between.
 163
 164 This variable should look like ((\"STRING\" QUALIFIERS)
 165                                 (\"STRING\" QUALIFIERS) ...), where
 166 QUALIFIERS is a list of the same form as
 167 `ibuffer-filtering-qualifiers'.
 168
 169 See also the variables `ibuffer-filter-groups',
 170 `ibuffer-filtering-qualifiers', `ibuffer-filtering-alist', and the
 171 functions `ibuffer-switch-to-saved-filter-group',
 172 `ibuffer-save-filter-group'."
 173   :type '(repeat sexp)
 174   :group 'ibuffer)
 175
 176 (defvar ibuffer-hidden-filter-groups nil
 177   "A list of filtering groups which are currently hidden.")
 178
 179 (defvar ibuffer-filter-group-kill-ring nil)
 180
 181 (defcustom ibuffer-old-time 72
 182   "The number of hours before a buffer is considered \"old\"."
 183   :type '(choice (const :tag "72 hours (3 days)" 72)
 184                  (const :tag "48 hours (2 days)" 48)
 185                  (const :tag "24 hours (1 day)" 24)
 186                  (integer :tag "hours"))
 187   :group 'ibuffer)
 188
 189 (defcustom ibuffer-save-with-custom t
 190   "If non-nil, then use Custom to save interactively changed variables.
 191 Currently, this only applies to `ibuffer-saved-filters' and
 192 `ibuffer-saved-filter-groups."
 193   :type 'boolean
 194   :group 'ibuffer)
 195
 196 (defun ibuffer-ext-visible-p (buf all &optional ibuffer-buf)
 197   (or
 198    (ibuffer-buf-matches-predicates buf ibuffer-tmp-show-regexps)
 199    (and (not
 200          (or
 201           (ibuffer-buf-matches-predicates buf ibuffer-tmp-hide-regexps)
 202           (ibuffer-buf-matches-predicates buf ibuffer-never-show-predicates)))
 203         (or all
 204             (not
 205              (ibuffer-buf-matches-predicates buf ibuffer-maybe-show-predicates)))
 206         (or ibuffer-view-ibuffer
 207             (and ibuffer-buf
 208                  (not (eq ibuffer-buf buf))))
 209         (or
 210          (ibuffer-included-in-filters-p buf ibuffer-filtering-qualifiers)
 211          (ibuffer-buf-matches-predicates buf ibuffer-always-show-predicates)))))
 212
 213 (defun ibuffer-auto-update-changed ()
 214   (when ibuffer-auto-buffers-changed
 215     (setq ibuffer-auto-buffers-changed nil)
 216     (mapcar #'(lambda (buf)
 217                 (ignore-errors
 218                   (with-current-buffer buf
 219                     (when (and ibuffer-auto-mode
 220                                (eq major-mode 'ibuffer-mode))
 221                       (ibuffer-update nil t)))))
 222             (buffer-list))))
 223
 224 ;;;###autoload
 225 (defun ibuffer-auto-mode (&optional arg)
 226   "Toggle use of Ibuffer's auto-update facility.
 227 With numeric ARG, enable auto-update if and only if ARG is positive."
 228   (interactive)
 229   (unless (eq major-mode 'ibuffer-mode)
 230     (error "This buffer is not in Ibuffer mode"))
 231   (set (make-local-variable 'ibuffer-auto-mode)
 232        (if arg
 233            (plusp arg)
 234          (not ibuffer-auto-mode)))
 235   (defadvice get-buffer-create (after ibuffer-notify-create activate)
 236     (setq ibuffer-auto-buffers-changed t))
 237   (defadvice kill-buffer (after ibuffer-notify-kill activate)
 238     (setq ibuffer-auto-buffers-changed t))
 239   (add-hook 'post-command-hook 'ibuffer-auto-update-changed)
 240   (ibuffer-update-mode-name))
 241
 242 ;;;###autoload
 243 (defun ibuffer-mouse-filter-by-mode (event)
 244   "Enable or disable filtering by the major mode chosen via mouse."
 245   (interactive "e")
 246   (ibuffer-interactive-filter-by-mode event))
 247
 248 ;;;###autoload
 249 (defun ibuffer-interactive-filter-by-mode (event-or-point)
 250   "Enable or disable filtering by the major mode at point."
 251   (interactive "d")
 252   (if (eventp event-or-point)
 253       (mouse-set-point event-or-point)
 254     (goto-char event-or-point))
 255   (let ((buf (ibuffer-current-buffer)))
 256     (if (assq 'mode ibuffer-filtering-qualifiers)
 257         (setq ibuffer-filtering-qualifiers
 258               (ibuffer-delete-alist 'mode ibuffer-filtering-qualifiers))
 259       (ibuffer-push-filter (cons 'mode
 260                                 (with-current-buffer buf
 261                                   major-mode)))))
 262   (ibuffer-update nil t))
 263
 264 ;;;###autoload
 265 (defun ibuffer-mouse-toggle-filter-group (event)
 266   "Toggle the display status of the filter group chosen with the mouse."
 267   (interactive "e")
 268   (ibuffer-toggle-filter-group-1 (save-excursion
 269                                    (mouse-set-point event)
 270                                    (point))))
 271
 272 ;;;###autoload
 273 (defun ibuffer-toggle-filter-group ()
 274   "Toggle the display status of the filter group on this line."
 275   (interactive)
 276   (ibuffer-toggle-filter-group-1 (point)))
 277
 278 (defun ibuffer-toggle-filter-group-1 (posn)
 279   (let ((name (get-text-property posn 'ibuffer-filter-group-name)))
 280     (unless (stringp name)
 281       (error "No filtering group name present"))
 282     (if (member name ibuffer-hidden-filter-groups)
 283         (setq ibuffer-hidden-filter-groups
 284               (delete name ibuffer-hidden-filter-groups))
 285       (push name ibuffer-hidden-filter-groups))
 286     (ibuffer-update nil t)))
 287
 288 ;;;###autoload
 289 (defun ibuffer-forward-filter-group (&optional count)
 290   "Move point forwards by COUNT filtering groups."
 291   (interactive "P")
 292   (unless count
 293     (setq count 1))
 294   (when (> count 0)
 295     (when (get-text-property (point) 'ibuffer-filter-group-name)
 296       (goto-char (next-single-property-change
 297                   (point) 'ibuffer-filter-group-name
 298                   nil (point-max))))
 299     (goto-char (next-single-property-change
 300                 (point) 'ibuffer-filter-group-name
 301                 nil (point-max)))
 302     (ibuffer-forward-filter-group (1- count)))
 303   (ibuffer-forward-line 0))
 304
 305 ;;;###autoload
 306 (defun ibuffer-backward-filter-group (&optional count)
 307   "Move point backwards by COUNT filtering groups."
 308   (interactive "P")
 309   (unless count
 310     (setq count 1))
 311   (when (> count 0)
 312     (when (get-text-property (point) 'ibuffer-filter-group-name)
 313       (goto-char (previous-single-property-change
 314                   (point) 'ibuffer-filter-group-name
 315                   nil (point-min))))
 316     (goto-char (previous-single-property-change
 317                 (point) 'ibuffer-filter-group-name
 318                 nil (point-min)))
 319     (ibuffer-backward-filter-group (1- count)))
 320   (when (= (point) (point-min))
 321     (goto-char (point-max))
 322     (ibuffer-backward-filter-group 1))
 323   (ibuffer-forward-line 0))
 324
 325 ;;;###autoload (autoload 'ibuffer-do-shell-command-pipe "ibuf-ext.el")
 326 (define-ibuffer-op shell-command-pipe (command)
 327   "Pipe the contents of each marked buffer to shell command COMMAND."
 328   (:interactive "sPipe to shell command: "
 329    :opstring "Shell command executed on"
 330    :modifier-p nil)
 331   (shell-command-on-region
 332    (point-min) (point-max) command
 333    (get-buffer-create "* ibuffer-shell-output*")))
 334
 335 ;;;###autoload (autoload 'ibuffer-do-shell-command-pipe-replace "ibuf-ext.el")
 336 (define-ibuffer-op shell-command-pipe-replace (command)
 337   "Replace the contents of marked buffers with output of pipe to COMMAND."
 338   (:interactive "sPipe to shell command (replace): "
 339    :opstring "Buffer contents replaced in"
 340    :active-opstring "replace buffer contents in"
 341    :dangerous t
 342    :modifier-p t)
 343   (with-current-buffer buf
 344     (shell-command-on-region (point-min) (point-max)
 345                              command nil t)))
 346
 347 ;;;###autoload (autoload 'ibuffer-do-shell-command-file "ibuf-ext.el")
 348 (define-ibuffer-op shell-command-file (command)
 349   "Run shell command COMMAND separately on files of marked buffers."
 350   (:interactive "sShell command on buffer's file: "
 351    :opstring "Shell command executed on"
 352    :modifier-p nil)
 353   (shell-command (concat command " "
 354                          (shell-quote-argument
 355                           (if buffer-file-name
 356                               buffer-file-name
 357                             (make-temp-file
 358                              (substring (buffer-name) 0 (min 10 (length (buffer-name))))))))))
 359
 360 ;;;###autoload (autoload 'ibuffer-do-eval "ibuf-ext.el")
 361 (define-ibuffer-op eval (form)
 362   "Evaluate FORM in each of the buffers.
 363 Does not display the buffer during evaluation. See
 364 `ibuffer-do-view-and-eval' for that."
 365   (:interactive "xEval in buffers (form): "
 366    :opstring "evaluated in"
 367    :modifier-p :maybe)
 368   (eval form))
 369
 370 ;;;###autoload (autoload 'ibuffer-do-view-and-eval "ibuf-ext.el")
 371 (define-ibuffer-op view-and-eval (form)
 372   "Evaluate FORM while displaying each of the marked buffers.
 373 To evaluate a form without viewing the buffer, see `ibuffer-do-eval'."
 374   (:interactive "xEval viewing buffers (form): "
 375    :opstring "evaluated in"
 376    :complex t
 377    :modifier-p :maybe)
 378   (let ((ibuffer-buf (current-buffer)))
 379     (unwind-protect
 380         (progn
 381           (switch-to-buffer buf)
 382           (eval form))
 383       (switch-to-buffer ibuffer-buf))))
 384
 385 ;;;###autoload (autoload 'ibuffer-do-rename-uniquely "ibuf-ext.el")
 386 (define-ibuffer-op rename-uniquely ()
 387   "Rename marked buffers as with `rename-uniquely'."
 388   (:opstring "renamed"
 389    :modifier-p t)
 390   (rename-uniquely))
 391
 392 ;;;###autoload (autoload 'ibuffer-do-revert "ibuf-ext.el")
 393 (define-ibuffer-op revert ()
 394   "Revert marked buffers as with `revert-buffer'."
 395   (:dangerous t
 396    :opstring "reverted"
 397    :active-opstring "revert"
 398    :modifier-p :maybe)
 399   (revert-buffer t t))
 400
 401 ;;;###autoload (autoload 'ibuffer-do-replace-regexp "ibuf-ext.el")
 402 (define-ibuffer-op replace-regexp (from-str to-str)
 403   "Perform a `replace-regexp' in marked buffers."
 404   (:interactive
 405    (let* ((from-str (read-from-minibuffer "Replace regexp: "))
 406           (to-str (read-from-minibuffer (concat "Replace " from-str
 407                                                 " with: "))))
 408      (list from-str to-str))
 409    :opstring "replaced in"
 410    :complex t
 411    :modifier-p :maybe)
 412   (save-window-excursion
 413     (switch-to-buffer buf)
 414     (save-excursion
 415       (goto-char (point-min))
 416       (let ((case-fold-search ibuffer-case-fold-search))
 417         (while (re-search-forward from-str nil t)
 418           (replace-match to-str))))
 419     t))
 420
 421 ;;;###autoload (autoload 'ibuffer-do-query-replace "ibuf-ext.el")
 422 (define-ibuffer-op query-replace (&rest args)
 423   "Perform a `query-replace' in marked buffers."
 424   (:interactive
 425    (query-replace-read-args "Query replace" t t)
 426    :opstring "replaced in"
 427    :complex t
 428    :modifier-p :maybe)
 429   (save-window-excursion
 430     (switch-to-buffer buf)
 431     (save-excursion
 432       (let ((case-fold-search ibuffer-case-fold-search))
 433         (goto-char (point-min))
 434         (apply #'query-replace args)))
 435     t))
 436
 437 ;;;###autoload (autoload 'ibuffer-do-query-replace-regexp "ibuf-ext.el")
 438 (define-ibuffer-op query-replace-regexp (&rest args)
 439   "Perform a `query-replace-regexp' in marked buffers."
 440   (:interactive
 441    (query-replace-read-args "Query replace regexp" t t)
 442    :opstring "replaced in"
 443    :complex t
 444    :modifier-p :maybe)
 445   (save-window-excursion
 446     (switch-to-buffer buf)
 447     (save-excursion
 448       (let ((case-fold-search ibuffer-case-fold-search))
 449         (goto-char (point-min))
 450         (apply #'query-replace-regexp args)))
 451     t))
 452
 453 ;;;###autoload (autoload 'ibuffer-do-print "ibuf-ext.el")
 454 (define-ibuffer-op print ()
 455   "Print marked buffers as with `print-buffer'."
 456   (:opstring "printed"
 457    :modifier-p nil)
 458   (print-buffer))
 459
 460 ;;;###autoload
 461 (defun ibuffer-included-in-filters-p (buf filters)
 462   (not
 463    (memq nil ;; a filter will return nil if it failed
 464          (mapcar
 465           ;; filter should be like (TYPE . QUALIFIER), or
 466           ;; (or (TYPE . QUALIFIER) (TYPE . QUALIFIER) ...)
 467           #'(lambda (qual)
 468               (ibuffer-included-in-filter-p buf qual))
 469           filters))))
 470
 471 (defun ibuffer-included-in-filter-p (buf filter)
 472   (if (eq (car filter) 'not)
 473       (not (ibuffer-included-in-filter-p-1 buf (cdr filter)))
 474     (ibuffer-included-in-filter-p-1 buf filter)))
 475
 476 (defun ibuffer-included-in-filter-p-1 (buf filter)
 477   (not
 478    (not
 479     (case (car filter)
 480       (or
 481        (memq t (mapcar #'(lambda (x)
 482                            (ibuffer-included-in-filter-p buf x))
 483                        (cdr filter))))
 484       (saved
 485        (let ((data
 486               (assoc (cdr filter)
 487                      ibuffer-saved-filters)))
 488          (unless data
 489            (ibuffer-filter-disable)
 490            (error "Unknown saved filter %s" (cdr filter)))
 491          (ibuffer-included-in-filters-p buf (cadr data))))
 492       (t
 493        (let ((filterdat (assq (car filter)
 494                               ibuffer-filtering-alist)))
 495          ;; filterdat should be like (TYPE DESCRIPTION FUNC)
 496          ;; just a sanity check
 497         (unless filterdat
 498           (ibuffer-filter-disable)
 499           (error "Undefined filter %s" (car filter)))
 500         (not
 501          (not
 502           (funcall (caddr filterdat)
 503                    buf
 504                    (cdr filter))))))))))
 505
 506 (defun ibuffer-generate-filter-groups (bmarklist)
 507   (let ((filter-group-alist (append ibuffer-filter-groups
 508                                        (list (cons "Default" nil)))))
 509 ;;     (dolist (hidden ibuffer-hidden-filter-groups)
 510 ;;       (setq filter-group-alist (ibuffer-delete-alist
 511 ;;                                 hidden filter-group-alist)))
 512     (let ((vec (make-vector (length filter-group-alist) nil))
 513           (i 0))
 514       (dolist (filtergroup filter-group-alist)
 515         (let ((filterset (cdr filtergroup)))
 516           (multiple-value-bind (hip-crowd lamers)
 517               (ibuffer-split-list (lambda (bufmark)
 518                                     (ibuffer-included-in-filters-p (car bufmark)
 519                                                                    filterset))
 520                                   bmarklist)
 521             (aset vec i hip-crowd)
 522             (incf i)
 523             (setq bmarklist lamers))))
 524       (let ((ret nil))
 525         (dotimes (j i ret)
 526           (push (cons (car (nth j filter-group-alist))
 527                       (aref vec j))
 528                 ret))))))
 529
 530 ;;;###autoload
 531 (defun ibuffer-filters-to-filter-group (name)
 532   "Make the current filters into a filtering group."
 533   (interactive "sName for filtering group: ")
 534   (when (null ibuffer-filtering-qualifiers)
 535     (error "No filters in effect"))
 536   (push (cons name ibuffer-filtering-qualifiers) ibuffer-filter-groups)
 537   (ibuffer-filter-disable))
 538
 539 ;;;###autoload
 540 (defun ibuffer-set-filter-groups-by-mode ()
 541   "Set the current filter groups to filter by mode."
 542   (interactive)
 543   (setq ibuffer-filter-groups
 544         (mapcar (lambda (mode)
 545                   (cons (format "%s" mode) `((mode . ,mode))))
 546                 (let ((modes
 547                        (delete-duplicates
 548                         (mapcar (lambda (buf) (with-current-buffer buf major-mode))
 549                                 (buffer-list)))))
 550                   (if ibuffer-view-ibuffer
 551                       modes
 552                     (delq 'ibuffer-mode modes)))))
 553   (ibuffer-update nil t))
 554
 555 ;;;###autoload
 556 (defun ibuffer-pop-filter-group ()
 557   "Remove the first filtering group."
 558   (interactive)
 559   (when (null ibuffer-filter-groups)
 560     (error "No filtering groups active"))
 561   (setq ibuffer-hidden-filter-groups
 562         (delete (pop ibuffer-filter-groups)
 563                 ibuffer-hidden-filter-groups))
 564   (ibuffer-update nil t))
 565
 566 ;;;###autoload
 567 (defun ibuffer-clear-filter-groups ()
 568   "Remove all filtering groups."
 569   (interactive)
 570   (setq ibuffer-filter-groups nil
 571         ibuffer-hidden-filter-groups nil)
 572   (ibuffer-update nil t))
 573
 574 (defun ibuffer-current-filter-groups-with-position ()
 575   (save-excursion
 576     (goto-char (point-min))
 577     (let ((pos nil)
 578           (result nil))
 579       (while (and (not (eobp))
 580                   (setq pos (next-single-property-change
 581                              (point) 'ibuffer-filter-group-name)))
 582         (goto-char pos)
 583         (push (cons (get-text-property (point) 'ibuffer-filter-group-name)
 584                     pos)
 585               result)
 586         (goto-char (next-single-property-change
 587                     pos 'ibuffer-filter-group-name)))
 588       (nreverse result))))
 589
 590 ;;;###autoload
 591 (defun ibuffer-jump-to-filter-group (name)
 592   "Move point to the filter group whose name is NAME."
 593   (interactive (list nil))
 594   (let ((table (ibuffer-current-filter-groups-with-position)))
 595     (when (interactive-p)
 596       (setq name (completing-read "Jump to filter group: " table nil t)))
 597     (ibuffer-aif (assoc name table)
 598         (goto-char (cdr it))
 599       (error "No filter group with name %s" name))))
 600
 601 ;;;###autoload
 602 (defun ibuffer-kill-filter-group (name)
 603   "Delete the filtering group named NAME."
 604   (interactive (list nil))
 605   (when (interactive-p)
 606     (setq name (completing-read "Kill filter group: "
 607                                 ibuffer-filter-groups nil t)))
 608   (ibuffer-aif (assoc name ibuffer-filter-groups)
 609       (progn
 610         (setq ibuffer-filter-groups (ibuffer-delete-alist
 611                                      name ibuffer-filter-groups))
 612         (setq ibuffer-hidden-filter-groups
 613               delete name ibuffer-hidden-filter-groups))
 614     (error "No filter group with name \"%s\"" name))
 615   (ibuffer-update nil t))
 616
 617 ;;;###autoload
 618 (defun ibuffer-kill-line (&optional arg)
 619   (interactive "P")
 620   (ibuffer-aif (save-excursion
 621                  (ibuffer-forward-line 0)
 622                  (get-text-property (point) 'ibuffer-filter-group-name))
 623       (progn
 624         (when (equal it "Default")
 625           (error "Can't kill default filtering group"))
 626         (push (assoc it ibuffer-filter-groups) ibuffer-filter-group-kill-ring)
 627         (ibuffer-kill-filter-group it))
 628       (funcall (if (interactive-p) #'call-interactively #'funcall)
 629                #'kill-line arg)))
 630
 631 ;;;###autoload
 632 (defun ibuffer-yank (&optional arg)
 633   (interactive "P")
 634   (unless ibuffer-filter-group-kill-ring
 635     (error "ibuffer-filter-group-kill-ring is empty"))
 636   (save-excursion
 637     (ibuffer-forward-line 0)
 638     (let* ((last-killed (pop ibuffer-filter-group-kill-ring))
 639            (all-groups ibuffer-filter-groups)
 640            (cur (or (get-text-property (point) 'ibuffer-filter-group-name)
 641                     (get-text-property (point) 'ibuffer-filter-group)
 642                     (last all-groups)))
 643            (pos (or (position cur (mapcar #'car all-groups) :test #'equal)
 644                     (1- (length all-groups)))))
 645       (cond ((= pos 0)
 646              (push last-killed ibuffer-filter-groups))
 647             ((= pos (1- (length all-groups)))
 648              (setq ibuffer-filter-groups
 649                    (nconc ibuffer-filter-groups (list last-killed))))
 650             (t
 651              (let ((cell (nthcdr pos ibuffer-filter-groups)))
 652                (setf (cdr cell) (cons (car cell) (cdr cell)))
 653                (setf (car cell) last-killed))))))
 654   (ibuffer-update nil t))
 655
 656 ;;;###autoload
 657 (defun ibuffer-save-filter-groups (name groups)
 658   "Save all active filter groups GROUPS as NAME.
 659 They are added to `ibuffer-saved-filter-groups'.  Interactively,
 660 prompt for NAME, and use the current filters."
 661   (interactive
 662    (if (null ibuffer-filter-groups)
 663        (error "No filter groups active")
 664      (list
 665       (read-from-minibuffer "Save current filter groups as: ")
 666       ibuffer-filter-groups)))
 667   (ibuffer-aif (assoc name ibuffer-saved-filter-groups)
 668       (setcdr it groups)
 669     (push (cons name groups) ibuffer-saved-filter-groups))
 670   (ibuffer-maybe-save-stuff)
 671   (ibuffer-update-mode-name))
 672
 673 ;;;###autoload
 674 (defun ibuffer-delete-saved-filter-groups (name)
 675   "Delete saved filter groups with NAME.
 676 They are removed from `ibuffer-saved-filter-groups'."
 677   (interactive
 678    (list
 679     (if (null ibuffer-saved-filter-groups)
 680         (error "No saved filters")
 681       (completing-read "Delete saved filters: "
 682                        ibuffer-saved-filter-groups nil t))))
 683   (setq ibuffer-saved-filter-groups
 684         (ibuffer-delete-alist name ibuffer-saved-filter-groups))
 685   (ibuffer-maybe-save-stuff)
 686   (ibuffer-update nil t))
 687
 688 ;;;###autoload
 689 (defun ibuffer-switch-to-saved-filter-groups (name)
 690   "Set this buffer's filter groups to saved version with NAME.
 691 The value from `ibuffer-saved-filters' is used.
 692 If prefix argument ADD is non-nil, then add the saved filters instead
 693 of replacing the current filters."
 694   (interactive
 695    (list
 696     (if (null ibuffer-saved-filter-groups)
 697         (error "No saved filters")
 698       (completing-read "Switch to saved filter group: "
 699                        ibuffer-saved-filter-groups nil t))))
 700   (setq ibuffer-filter-groups (cdr (assoc name ibuffer-saved-filter-groups))
 701         ibuffer-hidden-filter-groups nil)
 702   (ibuffer-update nil t))
 703
 704 ;;;###autoload
 705 (defun ibuffer-filter-disable ()
 706   "Disable all filters currently in effect in this buffer."
 707   (interactive)
 708   (setq ibuffer-filtering-qualifiers nil)
 709   (ibuffer-update nil t))
 710
 711 ;;;###autoload
 712 (defun ibuffer-pop-filter ()
 713   "Remove the top filter in this buffer."
 714   (interactive)
 715   (when (null ibuffer-filtering-qualifiers)
 716     (error "No filters in effect"))
 717   (pop ibuffer-filtering-qualifiers)
 718   (ibuffer-update nil t))
 719
 720 (defun ibuffer-push-filter (qualifier)
 721   "Add QUALIFIER to `ibuffer-filtering-qualifiers'."
 722   (push qualifier ibuffer-filtering-qualifiers))
 723
 724 ;;;###autoload
 725 (defun ibuffer-decompose-filter ()
 726   "Separate the top compound filter (OR, NOT, or SAVED) in this buffer.
 727
 728 This means that the topmost filter on the filtering stack, which must
 729 be a complex filter like (OR [name: foo] [mode: bar-mode]), will be
 730 turned into two separate filters [name: foo] and [mode: bar-mode]."
 731   (interactive)
 732   (when (null ibuffer-filtering-qualifiers)
 733     (error "No filters in effect"))
 734   (let ((lim (pop ibuffer-filtering-qualifiers)))
 735     (case (car lim)
 736       (or
 737        (setq ibuffer-filtering-qualifiers (append
 738                                           (cdr lim)
 739                                           ibuffer-filtering-qualifiers)))
 740       (saved
 741        (let ((data
 742               (assoc (cdr lim)
 743                      ibuffer-saved-filters)))
 744          (unless data
 745            (ibuffer-filter-disable)
 746            (error "Unknown saved filter %s" (cdr lim)))
 747          (setq ibuffer-filtering-qualifiers (append
 748                                             (cadr data)
 749                                             ibuffer-filtering-qualifiers))))
 750       (not
 751        (push (cdr lim)
 752              ibuffer-filtering-qualifiers))
 753       (t
 754        (error "Filter type %s is not compound" (car lim)))))
 755   (ibuffer-update nil t))
 756
 757 ;;;###autoload
 758 (defun ibuffer-exchange-filters ()
 759   "Exchange the top two filters on the stack in this buffer."
 760   (interactive)
 761   (when (< (length ibuffer-filtering-qualifiers)
 762            2)
 763     (error "Need two filters to exchange"))
 764   (let ((first (pop ibuffer-filtering-qualifiers))
 765         (second (pop ibuffer-filtering-qualifiers)))
 766     (push first ibuffer-filtering-qualifiers)
 767     (push second ibuffer-filtering-qualifiers))
 768   (ibuffer-update nil t))
 769
 770 ;;;###autoload
 771 (defun ibuffer-negate-filter ()
 772   "Negate the sense of the top filter in the current buffer."
 773   (interactive)
 774   (when (null ibuffer-filtering-qualifiers)
 775     (error "No filters in effect"))
 776   (let ((lim (pop ibuffer-filtering-qualifiers)))
 777     (push (if (eq (car lim) 'not)
 778               (cdr lim)
 779             (cons 'not lim))
 780           ibuffer-filtering-qualifiers))
 781   (ibuffer-update nil t))
 782
 783 ;;;###autoload
 784 (defun ibuffer-or-filter (&optional reverse)
 785   "Replace the top two filters in this buffer with their logical OR.
 786 If optional argument REVERSE is non-nil, instead break the top OR
 787 filter into parts."
 788   (interactive "P")
 789   (if reverse
 790       (progn
 791         (when (or (null ibuffer-filtering-qualifiers)
 792                   (not (eq 'or (caar ibuffer-filtering-qualifiers))))
 793           (error "Top filter is not an OR"))
 794         (let ((lim (pop ibuffer-filtering-qualifiers)))
 795           (setq ibuffer-filtering-qualifiers (nconc (cdr lim) ibuffer-filtering-qualifiers))))
 796     (when (< (length ibuffer-filtering-qualifiers) 2)
 797       (error "Need two filters to OR"))
 798     ;; If the second filter is an OR, just add to it.
 799     (let ((first (pop ibuffer-filtering-qualifiers))
 800           (second (pop ibuffer-filtering-qualifiers)))
 801       (if (eq 'or (car second))
 802           (push (nconc (list 'or first) (cdr second)) ibuffer-filtering-qualifiers)
 803         (push (list 'or first second)
 804               ibuffer-filtering-qualifiers))))
 805   (ibuffer-update nil t))
 806
 807 (defun ibuffer-maybe-save-stuff ()
 808   (when ibuffer-save-with-custom
 809     (if (fboundp 'customize-save-variable)
 810         (progn
 811           (customize-save-variable 'ibuffer-saved-filters
 812                                    ibuffer-saved-filters)
 813           (customize-save-variable 'ibuffer-saved-filter-groups
 814                                    ibuffer-saved-filter-groups))
 815       (message "Not saved permanently: Customize not available"))))
 816
 817 ;;;###autoload
 818 (defun ibuffer-save-filters (name filters)
 819   "Save FILTERS in this buffer with name NAME in `ibuffer-saved-filters'.
 820 Interactively, prompt for NAME, and use the current filters."
 821   (interactive
 822    (if (null ibuffer-filtering-qualifiers)
 823        (error "No filters currently in effect")
 824      (list
 825       (read-from-minibuffer "Save current filters as: ")
 826       ibuffer-filtering-qualifiers)))
 827   (ibuffer-aif (assoc name ibuffer-saved-filters)
 828       (setcdr it filters)
 829     (push (list name filters) ibuffer-saved-filters))
 830   (ibuffer-maybe-save-stuff)
 831   (ibuffer-update-mode-name))
 832
 833 ;;;###autoload
 834 (defun ibuffer-delete-saved-filters (name)
 835   "Delete saved filters with NAME from `ibuffer-saved-filters'."
 836   (interactive
 837    (list
 838     (if (null ibuffer-saved-filters)
 839         (error "No saved filters")
 840       (completing-read "Delete saved filters: "
 841                        ibuffer-saved-filters nil t))))
 842   (setq ibuffer-saved-filters
 843         (ibuffer-delete-alist name ibuffer-saved-filters))
 844   (ibuffer-maybe-save-stuff)
 845   (ibuffer-update nil t))
 846
 847 ;;;###autoload
 848 (defun ibuffer-add-saved-filters (name)
 849   "Add saved filters from `ibuffer-saved-filters' to this buffer's filters."
 850   (interactive
 851    (list
 852     (if (null ibuffer-saved-filters)
 853         (error "No saved filters")
 854       (completing-read "Add saved filters: "
 855                        ibuffer-saved-filters nil t))))
 856   (push (cons 'saved name) ibuffer-filtering-qualifiers)
 857   (ibuffer-update nil t))
 858
 859 ;;;###autoload
 860 (defun ibuffer-switch-to-saved-filters (name)
 861   "Set this buffer's filters to filters with NAME from `ibuffer-saved-filters'.
 862 If prefix argument ADD is non-nil, then add the saved filters instead
 863 of replacing the current filters."
 864   (interactive
 865    (list
 866     (if (null ibuffer-saved-filters)
 867         (error "No saved filters")
 868       (completing-read "Switch to saved filters: "
 869                        ibuffer-saved-filters nil t))))
 870   (setq ibuffer-filtering-qualifiers (list (cons 'saved name)))
 871   (ibuffer-update nil t))
 872
 873 (defun ibuffer-format-qualifier (qualifier)
 874   (if (eq (car-safe qualifier) 'not)
 875       (concat " [NOT" (ibuffer-format-qualifier-1 (cdr qualifier)) "]")
 876     (ibuffer-format-qualifier-1 qualifier)))
 877
 878 (defun ibuffer-format-qualifier-1 (qualifier)
 879   (case (car qualifier)
 880     (saved
 881      (concat " [filter: " (cdr qualifier) "]"))
 882     (or
 883      (concat " [OR" (mapconcat #'ibuffer-format-qualifier
 884                                (cdr qualifier) "") "]"))
 885     (t
 886      (let ((type (assq (car qualifier) ibuffer-filtering-alist)))
 887        (unless qualifier
 888          (error "Ibuffer: bad qualifier %s" qualifier))
 889        (concat " [" (cadr type) ": " (format "%s]" (cdr qualifier)))))))
 890
 891 ;;; Extra operation definitions
 892
 893 ;;;###autoload (autoload 'ibuffer-filter-by-mode "ibuf-ext.el")
 894 (define-ibuffer-filter mode
 895   "Toggle current view to buffers with major mode QUALIFIER."
 896   (:description "major mode"
 897    :reader
 898    (intern
 899     (completing-read "Filter by major mode: " obarray
 900                      #'(lambda (e)
 901                          (string-match "-mode$"
 902                                        (symbol-name e)))
 903                      t
 904                      (let ((buf (ibuffer-current-buffer)))
 905                        (if (and buf (buffer-live-p buf))
 906                            (with-current-buffer buf
 907                              (symbol-name major-mode))
 908                          "")))))
 909   (eq qualifier (with-current-buffer buf major-mode)))
 910
 911 ;;;###autoload (autoload 'ibuffer-filter-by-name "ibuf-ext.el")
 912 (define-ibuffer-filter name
 913   "Toggle current view to buffers with name matching QUALIFIER."
 914   (:description "buffer name"
 915    :reader (read-from-minibuffer "Filter by name (regexp): "))
 916   (string-match qualifier (buffer-name buf)))
 917
 918 ;;;###autoload (autoload 'ibuffer-filter-by-filename "ibuf-ext.el")
 919 (define-ibuffer-filter filename
 920   "Toggle current view to buffers with filename matching QUALIFIER."
 921   (:description "filename"
 922    :reader (read-from-minibuffer "Filter by filename (regexp): "))
 923   (ibuffer-awhen (buffer-file-name buf)
 924     (string-match qualifier it)))
 925
 926 ;;;###autoload (autoload 'ibuffer-filter-by-size-gt  "ibuf-ext.el")
 927 (define-ibuffer-filter size-gt
 928   "Toggle current view to buffers with size greater than QUALIFIER."
 929   (:description "size greater than"
 930    :reader
 931    (string-to-number (read-from-minibuffer "Filter by size greater than: ")))
 932   (> (with-current-buffer buf (buffer-size))
 933      qualifier))
 934
 935 ;;;###autoload (autoload 'ibuffer-filter-by-size-lt  "ibuf-ext.el")
 936 (define-ibuffer-filter size-lt
 937    "Toggle current view to buffers with size less than QUALIFIER."
 938   (:description "size less than"
 939    :reader
 940    (string-to-number (read-from-minibuffer "Filter by size less than: ")))
 941   (< (with-current-buffer buf (buffer-size))
 942      qualifier))
 943
 944 ;;;###autoload (autoload 'ibuffer-filter-by-content "ibuf-ext.el")
 945 (define-ibuffer-filter content
 946    "Toggle current view to buffers whose contents match QUALIFIER."
 947   (:description "content"
 948    :reader (read-from-minibuffer "Filter by content (regexp): "))
 949   (with-current-buffer buf
 950     (save-excursion
 951       (goto-char (point-min))
 952       (re-search-forward qualifier nil t))))
 953
 954 ;;;###autoload (autoload 'ibuffer-filter-by-predicate "ibuf-ext.el")
 955 (define-ibuffer-filter predicate
 956    "Toggle current view to buffers for which QUALIFIER returns non-nil."
 957   (:description "predicate"
 958    :reader (read-minibuffer "Filter by predicate (form): "))
 959   (with-current-buffer buf
 960     (eval qualifier)))
 961
 962 ;;; Sorting
 963
 964 ;;;###autoload
 965 (defun ibuffer-toggle-sorting-mode ()
 966   "Toggle the current sorting mode.
 967 Default sorting modes are:
 968  Recency - the last time the buffer was viewed
 969  Name - the name of the buffer
 970  Major Mode - the name of the major mode of the buffer
 971  Size - the size of the buffer"
 972   (interactive)
 973   (let ((modes (mapcar 'car ibuffer-sorting-functions-alist)))
 974     (add-to-list 'modes 'recency)
 975     (setq modes (sort modes 'string-lessp))
 976     (let ((next (or (car-safe (cdr-safe (memq ibuffer-sorting-mode modes)))
 977                     (car modes))))
 978       (setq ibuffer-sorting-mode next)
 979       (message "Sorting by %s" next)))
 980   (ibuffer-redisplay t))
 981
 982 ;;;###autoload
 983 (defun ibuffer-invert-sorting ()
 984   "Toggle whether or not sorting is in reverse order."
 985   (interactive)
 986   (setq ibuffer-sorting-reversep (not ibuffer-sorting-reversep))
 987   (message "Sorting order %s"
 988            (if ibuffer-sorting-reversep
 989                "reversed"
 990              "normal"))
 991   (ibuffer-redisplay t))
 992
 993 ;;;###autoload (autoload 'ibuffer-do-sort-by-major-mode "ibuf-ext.el")
 994 (define-ibuffer-sorter major-mode
 995   "Sort the buffers by major modes.
 996 Ordering is lexicographic."
 997   (:description "major mode")
 998   (string-lessp (downcase
 999                  (symbol-name (with-current-buffer
1000                                   (car a)
1001                                 major-mode)))
1002                 (downcase
1003                  (symbol-name (with-current-buffer
1004                                   (car b)
1005                                 major-mode)))))
1006
1007 ;;;###autoload (autoload 'ibuffer-do-sort-by-mode-name "ibuf-ext.el")
1008 (define-ibuffer-sorter mode-name
1009   "Sort the buffers by their mode name.
1010 Ordering is lexicographic."
1011   (:description "major mode name")
1012   (string-lessp (downcase
1013                   (with-current-buffer
1014                       (car a)
1015                     mode-name))
1016                 (downcase
1017                  (with-current-buffer
1018                      (car b)
1019                    mode-name))))
1020
1021 ;;;###autoload (autoload 'ibuffer-do-sort-by-alphabetic "ibuf-ext.el")
1022 (define-ibuffer-sorter alphabetic
1023   "Sort the buffers by their names.
1024 Ordering is lexicographic."
1025   (:description "buffer name")
1026   (string-lessp
1027    (buffer-name (car a))
1028    (buffer-name (car b))))
1029
1030 ;;;###autoload (autoload 'ibuffer-do-sort-by-size "ibuf-ext.el")
1031 (define-ibuffer-sorter size
1032  "Sort the buffers by their size."
1033   (:description "size")
1034   (< (with-current-buffer (car a)
1035        (buffer-size))
1036      (with-current-buffer (car b)
1037        (buffer-size))))
1038
1039 ;;; Functions to emulate bs.el
1040
1041 ;;;###autoload
1042 (defun ibuffer-bs-show ()
1043   "Emulate `bs-show' from the bs.el package."
1044   (interactive)
1045   (ibuffer t "*Ibuffer-bs*" '((filename . ".*")) nil t)
1046   (define-key (current-local-map) "a" 'ibuffer-bs-toggle-all))
1047
1048 (defun ibuffer-bs-toggle-all ()
1049   "Emulate `bs-toggle-show-all' from the bs.el package."
1050   (interactive)
1051   (if ibuffer-filtering-qualifiers
1052       (ibuffer-pop-filter)
1053     (progn (ibuffer-push-filter '(filename . ".*"))
1054            (ibuffer-update nil t))))
1055
1056 ;;; Handy functions
1057
1058 ;;;###autoload
1059 (defun ibuffer-add-to-tmp-hide (regexp)
1060   "Add REGEXP to `ibuffer-tmp-hide-regexps'.
1061 This means that buffers whose name matches REGEXP will not be shown
1062 for this ibuffer session."
1063   (interactive
1064    (list
1065     (read-from-minibuffer "Never show buffers matching: "
1066                           (regexp-quote (buffer-name (ibuffer-current-buffer t))))))
1067   (push regexp ibuffer-tmp-hide-regexps))
1068
1069 ;;;###autoload
1070 (defun ibuffer-add-to-tmp-show (regexp)
1071   "Add REGEXP to `ibuffer-tmp-show-regexps'.
1072 This means that buffers whose name matches REGEXP will always be shown
1073 for this ibuffer session."
1074   (interactive
1075    (list
1076     (read-from-minibuffer "Always show buffers matching: "
1077                           (regexp-quote (buffer-name (ibuffer-current-buffer t))))))
1078   (push regexp ibuffer-tmp-show-regexps))
1079
1080 ;;;###autoload
1081 (defun ibuffer-forward-next-marked (&optional count mark direction)
1082   "Move forward by COUNT marked buffers (default 1).
1083
1084 If MARK is non-nil, it should be a character denoting the type of mark
1085 to move by.  The default is `ibuffer-marked-char'.
1086
1087 If DIRECTION is non-nil, it should be an integer; negative integers
1088 mean move backwards, non-negative integers mean move forwards."
1089   (interactive "P")
1090   (unless count
1091     (setq count 1))
1092   (unless mark
1093     (setq mark ibuffer-marked-char))
1094   (unless direction
1095     (setq direction 1))
1096   ;; Skip the title
1097   (ibuffer-forward-line 0)
1098   (let ((opos (point))
1099         curmark)
1100     (ibuffer-forward-line direction)
1101     (while (not (or (= (point) opos)
1102                     (eq (setq curmark (ibuffer-current-mark))
1103                         mark)))
1104       (ibuffer-forward-line direction))
1105     (when (and (= (point) opos)
1106                (not (eq (ibuffer-current-mark) mark)))
1107       (error "No buffers with mark %c" mark))))
1108
1109 ;;;###autoload
1110 (defun ibuffer-backwards-next-marked (&optional count mark)
1111    "Move backwards by COUNT marked buffers (default 1).
1112
1113 If MARK is non-nil, it should be a character denoting the type of mark
1114 to move by.  The default is `ibuffer-marked-char'."
1115    (interactive "P")
1116    (ibuffer-forward-next-marked count mark -1))
1117
1118 ;;;###autoload
1119 (defun ibuffer-do-kill-lines ()
1120   "Hide all of the currently marked lines."
1121   (interactive)
1122   (if (= (ibuffer-count-marked-lines) 0)
1123       (message "No buffers marked; use 'm' to mark a buffer")
1124     (let ((count
1125            (ibuffer-map-marked-lines
1126             #'(lambda (buf mark)
1127                 'kill))))
1128       (message "Killed %s lines" count))))
1129
1130 ;;;###autoload
1131 (defun ibuffer-jump-to-buffer (name)
1132   "Move point to the buffer whose name is NAME."
1133   (interactive (list nil))
1134   (let ((table (mapcar #'(lambda (x)
1135                            (cons (buffer-name (car x))
1136                                  (caddr x)))
1137                        (ibuffer-current-state-list t))))
1138     (when (null table)
1139       (error "No buffers!"))
1140     (when (interactive-p)
1141       (setq name (completing-read "Jump to buffer: " table nil t)))
1142     (ibuffer-aif (assoc name table)
1143         (goto-char (cdr it))
1144       (error "No buffer with name %s" name))))
1145
1146 ;;;###autoload
1147 (defun ibuffer-diff-with-file ()
1148   "View the differences between this buffer and its associated file.
1149 This requires the external program \"diff\" to be in your `exec-path'."
1150   (interactive)
1151   (let* ((buf (ibuffer-current-buffer))
1152          (buf-filename (with-current-buffer buf
1153                          buffer-file-name)))
1154     (unless (buffer-live-p buf)
1155       (error "Buffer %s has been killed" buf))
1156     (unless buf-filename
1157       (error "Buffer %s has no associated file" buf))
1158     (let ((diff-buf (get-buffer-create "*Ibuffer-diff*")))
1159       (with-current-buffer diff-buf
1160         (setq buffer-read-only nil)
1161         (erase-buffer))
1162       (let ((tempfile (make-temp-file "ibuffer-diff-")))
1163         (unwind-protect
1164             (progn
1165               (with-current-buffer buf
1166                 (write-region (point-min) (point-max) tempfile nil 'nomessage))
1167               (if (zerop
1168                    (apply #'call-process "diff" nil diff-buf nil
1169                           (append
1170                            (when (and (boundp 'ediff-custom-diff-options)
1171                                       (stringp ediff-custom-diff-options))
1172                              (list ediff-custom-diff-options))
1173                            (list buf-filename tempfile))))
1174                   (message "No differences found")
1175                 (progn
1176                   (with-current-buffer diff-buf
1177                     (goto-char (point-min))
1178                     (if (fboundp 'diff-mode)
1179                         (diff-mode)
1180                       (fundamental-mode)))
1181                   (display-buffer diff-buf))))
1182           (when (file-exists-p tempfile)
1183             (delete-file tempfile)))))
1184       nil))
1185
1186 ;;;###autoload
1187 (defun ibuffer-copy-filename-as-kill (&optional arg)
1188   "Copy filenames of marked buffers into the kill ring.
1189 The names are separated by a space.
1190 If a buffer has no filename, it is ignored.
1191 With a zero prefix arg, use the complete pathname of each marked file.
1192
1193 You can then feed the file name(s) to other commands with C-y.
1194
1195  [ This docstring shamelessly stolen from the
1196  `dired-copy-filename-as-kill' in \"dired-x\". ]"
1197   ;; Add to docstring later:
1198   ;; With C-u, use the relative pathname of each marked file.
1199   (interactive "P")
1200   (if (= (ibuffer-count-marked-lines) 0)
1201       (message "No buffers marked; use 'm' to mark a buffer")
1202     (let ((ibuffer-copy-filename-as-kill-result "")
1203           (type (cond ((eql arg 0)
1204                        'full)
1205                       ;; ((eql arg 4)
1206                       ;;  'relative)
1207                       (t
1208                        'name))))
1209       (ibuffer-map-marked-lines
1210        #'(lambda (buf mark)
1211            (setq ibuffer-copy-filename-as-kill-result
1212                  (concat ibuffer-copy-filename-as-kill-result
1213                          (let ((name (buffer-file-name buf)))
1214                            (if name
1215                                (case type
1216                                  (full
1217                                   name)
1218                                  (t
1219                                   (file-name-nondirectory name)))
1220                              ""))
1221                          " "))))
1222       (push ibuffer-copy-filename-as-kill-result kill-ring))))
1223
1224 (defun ibuffer-mark-on-buffer (func &optional ibuffer-mark-on-buffer-mark group)
1225   (let ((count
1226          (ibuffer-map-lines
1227           #'(lambda (buf mark)
1228               (when (funcall func buf)
1229                 (ibuffer-set-mark-1 (or ibuffer-mark-on-buffer-mark
1230                                         ibuffer-marked-char))
1231                 t))
1232           nil
1233           group)))
1234     (ibuffer-redisplay t)
1235     (message "Marked %s buffers" count)))
1236
1237 ;;;###autoload
1238 (defun ibuffer-mark-by-name-regexp (regexp)
1239   "Mark all buffers whose name matches REGEXP."
1240   (interactive "sMark by name (regexp): ")
1241   (ibuffer-mark-on-buffer
1242    #'(lambda (buf)
1243        (string-match regexp (buffer-name buf)))))
1244
1245 ;;;###autoload
1246 (defun ibuffer-mark-by-mode-regexp (regexp)
1247   "Mark all buffers whose major mode matches REGEXP."
1248   (interactive "sMark by major mode (regexp): ")
1249   (ibuffer-mark-on-buffer
1250    #'(lambda (buf)
1251        (with-current-buffer buf
1252          (string-match regexp mode-name)))))
1253
1254 ;;;###autoload
1255 (defun ibuffer-mark-by-file-name-regexp (regexp)
1256   "Mark all buffers whose file name matches REGEXP."
1257   (interactive "sMark by file name (regexp): ")
1258   (ibuffer-mark-on-buffer
1259    #'(lambda (buf)
1260        (let ((name (or (buffer-file-name buf)
1261                        (with-current-buffer buf
1262                          (and
1263                           (boundp 'dired-directory)
1264                           (stringp dired-directory)
1265                           dired-directory)))))
1266          (when name
1267            (string-match regexp name))))))
1268
1269 ;;;###autoload
1270 (defun ibuffer-mark-by-mode (mode)
1271   "Mark all buffers whose major mode equals MODE."
1272   (interactive
1273    (list (intern (completing-read "Mark by major mode: " obarray
1274                                   #'(lambda (e)
1275                                       ;; kind of a hack...
1276                                       (and (fboundp e)
1277                                            (string-match "-mode$"
1278                                                          (symbol-name e))))
1279                                   t
1280                                   (let ((buf (ibuffer-current-buffer)))
1281                                     (if (and buf (buffer-live-p buf))
1282                                         (with-current-buffer buf
1283                                           (cons (symbol-name major-mode)
1284                                                 0))
1285                                       ""))))))
1286   (ibuffer-mark-on-buffer
1287    #'(lambda (buf)
1288        (with-current-buffer buf
1289          (eq major-mode mode)))))
1290
1291 ;;;###autoload
1292 (defun ibuffer-mark-modified-buffers ()
1293   "Mark all modified buffers."
1294   (interactive)
1295   (ibuffer-mark-on-buffer
1296    #'(lambda (buf) (buffer-modified-p buf))))
1297
1298 ;;;###autoload
1299 (defun ibuffer-mark-unsaved-buffers ()
1300   "Mark all modified buffers that have an associated file."
1301   (interactive)
1302   (ibuffer-mark-on-buffer
1303    #'(lambda (buf) (and (with-current-buffer buf buffer-file-name)
1304                         (buffer-modified-p buf)))))
1305
1306 ;;;###autoload
1307 (defun ibuffer-mark-dissociated-buffers ()
1308   "Mark all buffers whose associated file does not exist."
1309   (interactive)
1310   (ibuffer-mark-on-buffer
1311    #'(lambda (buf)
1312        (with-current-buffer buf
1313          (or
1314           (and buffer-file-name
1315                (not (file-exists-p buffer-file-name)))
1316           (and (eq major-mode 'dired-mode)
1317                (boundp 'dired-directory)
1318                (stringp dired-directory)
1319                (not (file-exists-p (file-name-directory dired-directory)))))))))
1320
1321 ;;;###autoload
1322 (defun ibuffer-mark-help-buffers ()
1323   "Mark buffers like *Help*, *Apropos*, *Info*."
1324   (interactive)
1325   (ibuffer-mark-on-buffer
1326    #'(lambda (buf)
1327        (with-current-buffer buf
1328          (memq major-mode ibuffer-help-buffer-modes)))))
1329
1330 ;;;###autoload
1331 (defun ibuffer-mark-old-buffers ()
1332   "Mark buffers which have not been viewed in `ibuffer-old-time' days."
1333   (interactive)
1334   (ibuffer-mark-on-buffer
1335    #'(lambda (buf)
1336        (with-current-buffer buf
1337          ;; hacked from midnight.el
1338          (when buffer-display-time
1339            (let* ((tm (current-time))
1340                   (now (+ (* (float (ash 1 16)) (car tm))
1341                           (float (cadr tm)) (* 0.0000001 (caddr tm))))
1342                   (then (+ (* (float (ash 1 16))
1343                               (car buffer-display-time))
1344                            (float (cadr buffer-display-time))
1345                            (* 0.0000001 (caddr buffer-display-time)))))
1346              (> (- now then) (* 60 60 ibuffer-old-time))))))))
1347
1348 ;;;###autoload
1349 (defun ibuffer-mark-special-buffers ()
1350   "Mark all buffers whose name begins and ends with '*'."
1351   (interactive)
1352   (ibuffer-mark-on-buffer
1353    #'(lambda (buf) (string-match "^\\*.+\\*$"
1354                                  (buffer-name buf)))))
1355
1356 ;;;###autoload
1357 (defun ibuffer-mark-read-only-buffers ()
1358   "Mark all read-only buffers."
1359   (interactive)
1360   (ibuffer-mark-on-buffer
1361    #'(lambda (buf)
1362        (with-current-buffer buf
1363          buffer-read-only))))
1364
1365 ;;;###autoload
1366 (defun ibuffer-mark-dired-buffers ()
1367   "Mark all `dired' buffers."
1368   (interactive)
1369   (ibuffer-mark-on-buffer
1370    #'(lambda (buf)
1371        (with-current-buffer buf
1372          (eq major-mode 'dired-mode)))))
1373
1374 ;;;###autoload
1375 (defun ibuffer-do-occur (regexp &optional nlines)
1376   "View lines which match REGEXP in all marked buffers.
1377 Optional argument NLINES says how many lines of context to display: it
1378 defaults to one."
1379   (interactive (occur-read-primary-args))
1380   (if (or (not (integerp nlines))
1381           (< nlines 0))
1382       (setq nlines 1))
1383   (when (zerop (ibuffer-count-marked-lines))
1384     (ibuffer-set-mark ibuffer-marked-char))
1385   (let ((ibuffer-do-occur-bufs nil))
1386     ;; Accumulate a list of marked buffers
1387     (ibuffer-map-marked-lines
1388      #'(lambda (buf mark)
1389          (push buf ibuffer-do-occur-bufs)))
1390     (occur-1 regexp nlines ibuffer-do-occur-bufs)))
1391
1392 (provide 'ibuf-ext)
1393
1394 ;;; ibuf-ext.el ends here