1 ;;; grep.el --- run Grep as inferior of Emacs, parse match messages
3 ;; Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 ;; 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
6 ;; Author: Roland McGrath <roland@gnu.org>
8 ;; Keywords: tools, processes
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software; you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 3, or (at your option)
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 ;; Boston, MA 02110-1301, USA.
29 ;; This package provides the grep facilities documented in the Emacs
38 "Run grep as inferior of Emacs, parse error messages."
44 (defcustom grep-window-height nil
45 "*Number of lines in a grep window. If nil, use `compilation-window-height'."
46 :type '(choice (const :tag "Default" nil)
51 (defcustom grep-highlight-matches 'auto-detect
52 "If t, use special markers to highlight grep matches.
54 Some grep programs are able to surround matches with special
55 markers in grep output. Such markers can be used to highlight
58 This option sets the environment variable GREP_COLOR to specify
59 markers for highlighting and GREP_OPTIONS to add the --color
60 option in front of any explicit grep options before starting
63 The default value of this variable is set up by `grep-compute-defaults';
64 call that function before using this variable in your program."
65 :type '(choice (const :tag "Do not highlight matches with grep markers" nil)
66 (const :tag "Highlight matches with grep markers" t)
67 (other :tag "Not Set" auto-detect))
71 (defcustom grep-scroll-output nil
72 "*Non-nil to scroll the *grep* buffer window as output appears.
74 Setting it causes the grep commands to put point at the end of their
75 output window so that the end of the output is always visible rather
82 (defcustom grep-command nil
83 "The default grep command for \\[grep].
84 If the grep program used supports an option to always include file names
85 in its output (such as the `-H' option to GNU grep), it's a good idea to
86 include it when specifying `grep-command'.
88 The default value of this variable is set up by `grep-compute-defaults';
89 call that function before using this variable in your program."
91 (const :tag "Not Set" nil))
94 (defcustom grep-template nil
95 "The default command to run for \\[lgrep].
96 The default value of this variable is set up by `grep-compute-defaults';
97 call that function before using this variable in your program.
98 The following place holders should be present in the string:
99 <C> - place to put -i if case insensitive grep.
100 <F> - file names and wildcards to search.
101 <R> - the regular expression searched for.
102 <N> - place to insert null-device."
103 :type '(choice string
104 (const :tag "Not Set" nil))
108 (defcustom grep-use-null-device 'auto-detect
109 "If t, append the value of `null-device' to `grep' commands.
110 This is done to ensure that the output of grep includes the filename of
111 any match in the case where only a single file is searched, and is not
112 necessary if the grep program used supports the `-H' option.
114 The default value of this variable is set up by `grep-compute-defaults';
115 call that function before using this variable in your program."
116 :type '(choice (const :tag "Do Not Append Null Device" nil)
117 (const :tag "Append Null Device" t)
118 (other :tag "Not Set" auto-detect))
122 (defcustom grep-find-command nil
123 "The default find command for \\[grep-find].
124 The default value of this variable is set up by `grep-compute-defaults';
125 call that function before using this variable in your program."
126 :type '(choice string
127 (const :tag "Not Set" nil))
130 (defcustom grep-find-template nil
131 "The default command to run for \\[rgrep].
132 The default value of this variable is set up by `grep-compute-defaults';
133 call that function before using this variable in your program.
134 The following place holders should be present in the string:
135 <D> - base directory for find
136 <X> - find options to restrict or expand the directory list
137 <F> - find options to limit the files matched
138 <C> - place to put -i if case insensitive grep
139 <R> - the regular expression searched for."
140 :type '(choice string
141 (const :tag "Not Set" nil))
145 (defcustom grep-files-aliases
152 ("l" . "[Cc]hange[Ll]og*")
153 ("m" . "[Mm]akefile*")
156 "*Alist of aliases for the FILES argument to `lgrep' and `rgrep'."
160 (defcustom grep-find-ignored-directories
170 "*List of names of sub-directories which `rgrep' shall not recurse into."
171 :type '(repeat string)
174 (defcustom grep-error-screen-columns nil
175 "*If non-nil, column numbers in grep hits are screen columns.
176 See `compilation-error-screen-columns'"
177 :type '(choice (const :tag "Default" nil)
183 (defcustom grep-setup-hook nil
184 "List of hook functions run by `grep-process-setup' (see `run-hooks')."
188 (defvar grep-mode-map
189 (let ((map (cons 'keymap compilation-minor-mode-map)))
190 (define-key map " " 'scroll-up)
191 (define-key map "\^?" 'scroll-down)
192 (define-key map "\C-c\C-f" 'next-error-follow-minor-mode)
194 (define-key map "\r" 'compile-goto-error) ;; ?
195 (define-key map "n" 'next-error-no-select)
196 (define-key map "p" 'previous-error-no-select)
197 (define-key map "{" 'compilation-previous-file)
198 (define-key map "}" 'compilation-next-file)
199 (define-key map "\t" 'compilation-next-error)
200 (define-key map [backtab] 'compilation-previous-error)
202 ;; Set up the menu-bar
203 (define-key map [menu-bar grep]
204 (cons "Grep" (make-sparse-keymap "Grep")))
206 (define-key map [menu-bar grep compilation-kill-compilation]
207 '("Kill Grep" . kill-compilation))
208 (define-key map [menu-bar grep compilation-separator2]
210 (define-key map [menu-bar grep compilation-compile]
211 '("Compile..." . compile))
212 (define-key map [menu-bar grep compilation-grep]
213 '("Another grep..." . grep))
214 (define-key map [menu-bar grep compilation-grep-find]
215 '("Recursive grep..." . grep-find))
216 (define-key map [menu-bar grep compilation-recompile]
217 '("Repeat grep" . recompile))
218 (define-key map [menu-bar grep compilation-separator2]
220 (define-key map [menu-bar grep compilation-first-error]
221 '("First Match" . first-error))
222 (define-key map [menu-bar grep compilation-previous-error]
223 '("Previous Match" . previous-error))
224 (define-key map [menu-bar grep compilation-next-error]
225 '("Next Match" . next-error))
227 "Keymap for grep buffers.
228 `compilation-minor-mode-map' is a cdr of this.")
230 (defalias 'kill-grep 'kill-compilation)
232 ;;;; TODO --- refine this!!
234 ;;; (defcustom grep-use-compilation-buffer t
235 ;;; "When non-nil, grep specific commands update `compilation-last-buffer'.
236 ;;; This means that standard compile commands like \\[next-error] and \\[compile-goto-error]
237 ;;; can be used to navigate between grep matches (the default).
238 ;;; Otherwise, the grep specific commands like \\[grep-next-match] must
239 ;;; be used to navigate between grep matches."
243 ;; override compilation-last-buffer
244 (defvar grep-last-buffer nil
245 "The most recent grep buffer.
246 A grep buffer becomes most recent when you select Grep mode in it.
247 Notice that using \\[next-error] or \\[compile-goto-error] modifies
248 `complation-last-buffer' rather than `grep-last-buffer'.")
251 (defvar grep-regexp-alist
252 '(("^\\(.+?\\)\\(:[ \t]*\\)\\([0-9]+\\)\\2"
254 ;; Rule to match column numbers is commented out since no known grep
256 ;; ("^\\(.+?\\)\\(:[ \t]*\\)\\([0-9]+\\)\\2\\(?:\\([0-9]+\\)\\(?:-\\([0-9]+\\)\\)?\\2\\)?"
258 ("^\\(\\(.+?\\):\\([0-9]+\\):\\).*?\
259 \\(\033\\[01;31m\\(?:\033\\[K\\)?\\)\\(.*?\\)\\(\033\\[[0-9]*m\\)"
261 ;; Calculate column positions (beg . end) of first grep match on a line
263 (setq compilation-error-screen-columns nil)
264 (- (match-beginning 4) (match-end 1)))
266 (lambda () (- (match-end 5) (match-end 1)
267 (- (match-end 4) (match-beginning 4)))))
269 ("^Binary file \\(.+\\) matches$" 1 nil nil 0 1))
270 "Regexp used to match grep hits. See `compilation-error-regexp-alist'.")
272 (defvar grep-error "grep hit"
273 "Message to print when no matches are found.")
275 ;; Reverse the colors because grep hits are not errors (though we jump there
276 ;; with `next-error'), and unreadable files can't be gone to.
277 (defvar grep-hit-face compilation-info-face
278 "Face name to use for grep hits.")
280 (defvar grep-error-face 'compilation-error
281 "Face name to use for grep error messages.")
283 (defvar grep-match-face 'match
284 "Face name to use for grep matches.")
286 (defvar grep-context-face 'shadow
287 "Face name to use for grep context lines.")
289 (defvar grep-mode-font-lock-keywords
290 '(;; Command output lines.
291 ("^\\([A-Za-z_0-9/\.+-]+\\)[ \t]*:" 1 font-lock-function-name-face)
292 (": \\(.+\\): \\(?:Permission denied\\|No such \\(?:file or directory\\|device or address\\)\\)$"
294 ;; remove match from grep-regexp-alist before fontifying
295 ("^Grep[/a-zA-z]* started.*"
296 (0 '(face nil message nil help-echo nil mouse-face nil) t))
297 ("^Grep[/a-zA-z]* finished \\(?:(\\(matches found\\))\\|with \\(no matches found\\)\\).*"
298 (0 '(face nil message nil help-echo nil mouse-face nil) t)
299 (1 compilation-info-face nil t)
300 (2 compilation-warning-face nil t))
301 ("^Grep[/a-zA-z]* \\(exited abnormally\\|interrupt\\|killed\\|terminated\\)\\(?:.*with code \\([0-9]+\\)\\)?.*"
302 (0 '(face nil message nil help-echo nil mouse-face nil) t)
304 (2 grep-error-face nil t))
305 ("^.+?-[0-9]+-.*\n" (0 grep-context-face))
306 ;; Highlight grep matches and delete markers
307 ("\\(\033\\[01;31m\\)\\(.*?\\)\\(\033\\[[0-9]*m\\)"
308 ;; Refontification does not work after the markers have been
309 ;; deleted. So we use the font-lock-face property here as Font
310 ;; Lock does not clear that.
311 (2 (list 'face nil 'font-lock-face grep-match-face))
314 ;; Delete markers with `replace-match' because it updates
315 ;; the match-data, whereas `delete-region' would render it obsolete.
316 (replace-match "" t t nil 3)
317 (replace-match "" t t nil 1))))
318 ("\\(\033\\[[0-9;]*[mK]\\)"
319 ;; Delete all remaining escape sequences
321 (replace-match "" t t nil 1))))
322 "Additional things to highlight in grep output.
323 This gets tacked on the end of the generated expressions.")
326 (defvar grep-program "grep"
327 "The default grep program for `grep-command' and `grep-find-command'.
328 This variable's value takes effect when `grep-compute-defaults' is called.")
331 (defvar find-program "find"
332 "The default find program for `grep-find-command'.
333 This variable's value takes effect when `grep-compute-defaults' is called.")
336 (defvar xargs-program "xargs"
337 "The default xargs program for `grep-find-command'.
338 See `grep-find-use-xargs'.
339 This variable's value takes effect when `grep-compute-defaults' is called.")
342 (defvar grep-find-use-xargs nil
343 "Non-nil means that `grep-find' uses the `xargs' utility by default.
344 If `exec', use `find -exec'.
345 If `gnu', use `find -print0' and `xargs -0'.
346 Any other non-nil value means to use `find -print' and `xargs'.
348 This variable's value takes effect when `grep-compute-defaults' is called.")
350 ;; History of grep commands.
352 (defvar grep-history nil)
354 (defvar grep-find-history nil)
356 ;; History of lgrep and rgrep regexp and files args.
357 (defvar grep-regexp-history nil)
358 (defvar grep-files-history '("ch" "el"))
360 (defvar grep-host-defaults-alist nil
361 "Default values depending on target host.
362 `grep-compute-defaults' returns default values for every local or
363 remote host `grep' runs. These values can differ from host to
364 host. Once computed, the default values are kept here in order
365 to avoid computing them again.")
368 (defun grep-process-setup ()
369 "Setup compilation variables and buffer for `grep'.
370 Set up `compilation-exit-message-function' and run `grep-setup-hook'."
371 (unless (or (not grep-highlight-matches) (eq grep-highlight-matches t))
372 (grep-compute-defaults))
373 (when (eq grep-highlight-matches t)
374 ;; `setenv' modifies `process-environment' let-bound in `compilation-start'
375 ;; Any TERM except "dumb" allows GNU grep to use `--color=auto'
376 (setenv "TERM" "emacs-grep")
377 ;; `--color=auto' emits escape sequences on a tty rather than on a pipe,
378 ;; thus allowing to use multiple grep filters on the command line
379 ;; and to output escape sequences only on the final grep output
380 (setenv "GREP_OPTIONS" (concat (getenv "GREP_OPTIONS") " --color=auto"))
381 ;; GREP_COLOR is used in GNU grep 2.5.1, but deprecated in later versions
382 (setenv "GREP_COLOR" "01;31")
383 ;; GREP_COLORS is used in GNU grep 2.5.2 and later versions
384 (setenv "GREP_COLORS" "mt=01;31:fn=:ln=:bn=:se=:ml=:cx=:ne"))
385 (set (make-local-variable 'compilation-exit-message-function)
386 (lambda (status code msg)
387 (if (eq status 'exit)
389 '("finished (matches found)\n" . "matched"))
391 '("finished with no matches found\n" . "no match"))
395 (run-hooks 'grep-setup-hook))
397 (defun grep-probe (command args &optional func result)
398 (equal (condition-case nil
399 (apply (or func 'process-file) command args)
404 (defun grep-compute-defaults ()
405 ;; Keep default values.
406 (unless grep-host-defaults-alist
408 'grep-host-defaults-alist
410 `((grep-command ,grep-command)
411 (grep-template ,grep-template)
412 (grep-use-null-device ,grep-use-null-device)
413 (grep-find-command ,grep-find-command)
414 (grep-find-template ,grep-find-template)
415 (grep-find-use-xargs ,grep-find-use-xargs)
416 (grep-highlight-matches ,grep-highlight-matches)))))
418 (intern (or (file-remote-p default-directory 'host) "localhost")))
419 (host-defaults (assq host-id grep-host-defaults-alist))
420 (defaults (assq nil grep-host-defaults-alist)))
421 ;; There are different defaults on different hosts. They must be
422 ;; computed for every host once.
424 (or (cadr (assq 'grep-command host-defaults))
425 (cadr (assq 'grep-command defaults)))
428 (or (cadr (assq 'grep-template host-defaults))
429 (cadr (assq 'grep-template defaults)))
432 (or (cadr (assq 'grep-use-null-device host-defaults))
433 (cadr (assq 'grep-use-null-device defaults)))
436 (or (cadr (assq 'grep-find-command host-defaults))
437 (cadr (assq 'grep-find-command defaults)))
440 (or (cadr (assq 'grep-find-template host-defaults))
441 (cadr (assq 'grep-find-template defaults)))
444 (or (cadr (assq 'grep-find-use-xargs host-defaults))
445 (cadr (assq 'grep-find-use-xargs defaults)))
447 grep-highlight-matches
448 (or (cadr (assq 'grep-highlight-matches host-defaults))
449 (cadr (assq 'grep-highlight-matches defaults))))
451 (unless (or (not grep-use-null-device) (eq grep-use-null-device t))
452 (setq grep-use-null-device
454 (let ((hello-file (expand-file-name "HELLO" data-directory)))
456 (and (if grep-command
457 ;; `grep-command' is already set, so
458 ;; use that for testing.
459 (grep-probe grep-command
460 `(nil t nil "^English" ,hello-file)
461 #'call-process-shell-command)
462 ;; otherwise use `grep-program'
463 (grep-probe grep-program
464 `(nil t nil "-nH" "^English" ,hello-file)))
466 (goto-char (point-min))
468 (concat (regexp-quote hello-file)
469 ":[0-9]+:English")))))))))
470 (unless (and grep-command grep-find-command
471 grep-template grep-find-template)
473 (concat (if grep-use-null-device "-n" "-nH")
474 (if (grep-probe grep-program
475 `(nil nil nil "-e" "foo" ,null-device)
480 (format "%s %s " grep-program grep-options)))
481 (unless grep-template
483 (format "%s <C> %s <R> <F>" grep-program grep-options)))
484 (unless grep-find-use-xargs
485 (setq grep-find-use-xargs
488 (grep-probe find-program `(nil nil nil ,null-device "-print0"))
489 (grep-probe xargs-program `(nil nil nil "-0" "-e" "echo")))
493 (unless grep-find-command
494 (setq grep-find-command
495 (cond ((eq grep-find-use-xargs 'gnu)
496 (format "%s . -type f -print0 | %s -0 -e %s"
497 find-program xargs-program grep-command))
498 ((eq grep-find-use-xargs 'exec)
499 (let ((cmd0 (format "%s . -type f -exec %s"
500 find-program grep-command)))
502 (format "%s {} %s %s"
504 (shell-quote-argument ";"))
505 (1+ (length cmd0)))))
507 (format "%s . -type f -print | %s %s"
508 find-program xargs-program grep-command)))))
509 (unless grep-find-template
510 (setq grep-find-template
511 (let ((gcmd (format "%s <C> %s <R>"
512 grep-program grep-options)))
513 (cond ((eq grep-find-use-xargs 'gnu)
514 (format "%s . <X> -type f <F> -print0 | %s -0 -e %s"
515 find-program xargs-program gcmd))
516 ((eq grep-find-use-xargs 'exec)
517 (format "%s . <X> -type f <F> -exec %s {} %s %s"
518 find-program gcmd null-device
519 (shell-quote-argument ";")))
521 (format "%s . <X> -type f <F> -print | %s %s"
522 find-program xargs-program gcmd))))))))
523 (unless (or (not grep-highlight-matches) (eq grep-highlight-matches t))
524 (setq grep-highlight-matches
526 (and (grep-probe grep-program '(nil t nil "--help"))
528 (goto-char (point-min))
529 (search-forward "--color" nil t))
532 ;; Save defaults for this host.
533 (setq grep-host-defaults-alist
534 (delete (assq host-id grep-host-defaults-alist)
535 grep-host-defaults-alist))
537 'grep-host-defaults-alist
539 `((grep-command ,grep-command)
540 (grep-template ,grep-template)
541 (grep-use-null-device ,grep-use-null-device)
542 (grep-find-command ,grep-find-command)
543 (grep-find-template ,grep-find-template)
544 (grep-find-use-xargs ,grep-find-use-xargs)
545 (grep-highlight-matches ,grep-highlight-matches))))))
547 (defun grep-tag-default ()
548 (or (and transient-mark-mode mark-active
550 (buffer-substring-no-properties (point) (mark)))
551 (funcall (or find-tag-default-function
552 (get major-mode 'find-tag-default-function)
556 (defun grep-default-command ()
557 "Compute the default grep command for \\[universal-argument] \\[grep] to offer."
558 (let ((tag-default (shell-quote-argument (grep-tag-default)))
559 ;; This a regexp to match single shell arguments.
560 ;; Could someone please add comments explaining it?
561 (sh-arg-re "\\(\\(?:\"\\(?:[^\"]\\|\\\\\"\\)+\"\\|'[^']+'\\|[^\"' \t\n]\\)+\\)")
562 (grep-default (or (car grep-history) grep-command)))
563 ;; In the default command, find the arg that specifies the pattern.
564 (when (or (string-match
565 (concat "[^ ]+\\s +\\(?:-[^ ]+\\s +\\)*"
566 sh-arg-re "\\(\\s +\\(\\S +\\)\\)?")
568 ;; If the string is not yet complete.
569 (string-match "\\(\\)\\'" grep-default))
570 ;; Maybe we will replace the pattern with the default tag.
571 ;; But first, maybe replace the file name pattern.
573 (unless (or (not (stringp buffer-file-name))
574 (when (match-beginning 2)
578 (file-name-nondirectory
579 (match-string 3 grep-default)))
580 (file-name-nondirectory buffer-file-name)))))
581 (setq grep-default (concat (substring grep-default
582 0 (match-beginning 2))
584 (file-name-extension buffer-file-name))))
585 ;; In case wildcard-to-regexp gets an error
586 ;; from invalid data.
588 ;; Now replace the pattern with the default tag.
589 (replace-match tag-default t t grep-default 1))))
593 (define-compilation-mode grep-mode "Grep"
594 "Sets `grep-last-buffer' and `compilation-window-height'."
595 (setq grep-last-buffer (current-buffer))
596 (set (make-local-variable 'compilation-error-face)
598 (set (make-local-variable 'compilation-error-regexp-alist)
600 (set (make-local-variable 'compilation-process-setup-function)
602 (set (make-local-variable 'compilation-disable-input) t))
606 (defun grep (command-args)
607 "Run grep, with user-specified args, and collect output in a buffer.
608 While grep runs asynchronously, you can use \\[next-error] (M-x next-error),
609 or \\<grep-mode-map>\\[compile-goto-error] in the grep \
610 output buffer, to go to the lines where grep
613 For doing a recursive `grep', see the `rgrep' command. For running
614 `grep' in a specific directory, see `lgrep'.
616 This command uses a special history list for its COMMAND-ARGS, so you
617 can easily repeat a grep command.
619 A prefix argument says to default the argument based upon the current
620 tag the cursor is over, substituting it into the last grep command
621 in the grep command history (or into `grep-command' if that history
625 (grep-compute-defaults)
626 (let ((default (grep-default-command)))
627 (list (read-from-minibuffer "Run grep (like this): "
628 (if current-prefix-arg
629 default grep-command)
630 nil nil 'grep-history
631 (if current-prefix-arg nil default))))))
633 ;; Setting process-setup-function makes exit-message-function work
634 ;; even when async processes aren't supported.
635 (compilation-start (if (and grep-use-null-device null-device)
636 (concat command-args " " null-device)
642 (defun grep-find (command-args)
643 "Run grep via find, with user-specified args COMMAND-ARGS.
644 Collect output in a buffer.
645 While find runs asynchronously, you can use the \\[next-error] command
646 to find the text that grep hits refer to.
648 This command uses a special history list for its arguments, so you can
649 easily repeat a find command."
652 (grep-compute-defaults)
653 (if grep-find-command
654 (list (read-from-minibuffer "Run find (like this): "
655 grep-find-command nil nil
657 ;; No default was set
659 "compile.el: No `grep-find-command' command available. Press RET.")
662 (let ((null-device nil)) ; see grep
663 (grep command-args))))
666 (defalias 'find-grep 'grep-find)
669 ;; User-friendly interactive API.
671 (defconst grep-expand-keywords
672 '(("<C>" . (and cf (isearch-no-upper-case-p regexp t) "-i"))
675 ("<N>" . null-device)
677 ("<R>" . (shell-quote-argument (or regexp ""))))
678 "List of substitutions performed by `grep-expand-template'.
679 If car of an element matches, the cdr is evalled in to get the
680 substitution string. Note dynamic scoping of variables.")
682 (defun grep-expand-template (template &optional regexp files dir excl)
683 "Patch grep COMMAND string replacing <C>, <D>, <F>, <R>, and <X>."
684 (let ((command template)
685 (cf case-fold-search)
686 (case-fold-search nil))
687 (dolist (kw grep-expand-keywords command)
688 (if (string-match (car kw) command)
691 (or (if (symbolp (cdr kw))
692 (symbol-value (cdr kw))
693 (save-match-data (eval (cdr kw))))
697 (defun grep-read-regexp ()
698 "Read regexp arg for interactive grep."
699 (let ((default (grep-tag-default)))
702 (if (and default (> (length default) 0))
703 (format " (default \"%s\"): " default) ": "))
704 nil 'grep-regexp-history default)))
706 (defun grep-read-files (regexp)
707 "Read files arg for interactive grep."
708 (let* ((bn (or (buffer-file-name) (buffer-name)))
711 (file-name-nondirectory bn)))
714 (let ((aliases grep-files-aliases)
717 (setq alias (car aliases)
718 aliases (cdr aliases))
719 (if (string-match (wildcard-to-regexp (cdr alias)) fn)
724 (let ((ext (file-name-extension fn)))
725 (and ext (concat "*." ext))))
726 (car grep-files-history)
727 (car (car grep-files-aliases))))
729 (concat "Search for \"" regexp
731 (if default (concat " (default " default ")"))
733 nil 'grep-files-history default)))
735 (or (cdr (assoc files grep-files-aliases))
739 (defun lgrep (regexp &optional files dir)
740 "Run grep, searching for REGEXP in FILES in directory DIR.
741 The search is limited to file names matching shell pattern FILES.
742 FILES may use abbreviations defined in `grep-files-aliases', e.g.
743 entering `ch' is equivalent to `*.[ch]'.
745 With \\[universal-argument] prefix, you can edit the constructed shell command line
746 before it is executed.
747 With two \\[universal-argument] prefixes, directly edit and run `grep-command'.
749 Collect output in a buffer. While grep runs asynchronously, you
750 can use \\[next-error] (M-x next-error), or \\<grep-mode-map>\\[compile-goto-error] \
751 in the grep output buffer,
752 to go to the lines where grep found matches.
754 This command shares argument histories with \\[rgrep] and \\[grep]."
757 (grep-compute-defaults)
759 ((and grep-command (equal current-prefix-arg '(16)))
760 (list (read-from-minibuffer "Run: " grep-command
761 nil nil 'grep-history)
765 (read-string "grep.el: No `grep-template' available. Press RET.")))
766 (t (let* ((regexp (grep-read-regexp))
767 (files (grep-read-files regexp))
768 (dir (read-directory-name "In directory: "
769 nil default-directory t)))
770 (list regexp files dir))))))
771 (when (and (stringp regexp) (> (length regexp) 0))
772 (let ((command regexp))
774 (if (string= command grep-command)
776 (setq dir (file-name-as-directory (expand-file-name dir)))
777 (setq command (grep-expand-template
782 (if (equal current-prefix-arg '(4))
784 (read-from-minibuffer "Confirm: "
785 command nil nil 'grep-history))
786 (add-to-history 'grep-history command))))
788 (let ((default-directory dir))
789 ;; Setting process-setup-function makes exit-message-function work
790 ;; even when async processes aren't supported.
791 (compilation-start (if (and grep-use-null-device null-device)
792 (concat command " " null-device)
795 (if (eq next-error-last-buffer (current-buffer))
796 (setq default-directory dir))))))
801 (defun rgrep (regexp &optional files dir)
802 "Recursively grep for REGEXP in FILES in directory tree rooted at DIR.
803 The search is limited to file names matching shell pattern FILES.
804 FILES may use abbreviations defined in `grep-files-aliases', e.g.
805 entering `ch' is equivalent to `*.[ch]'.
807 With \\[universal-argument] prefix, you can edit the constructed shell command line
808 before it is executed.
809 With two \\[universal-argument] prefixes, directly edit and run `grep-find-command'.
811 Collect output in a buffer. While find runs asynchronously, you
812 can use \\[next-error] (M-x next-error), or \\<grep-mode-map>\\[compile-goto-error] \
813 in the grep output buffer,
814 to go to the lines where grep found matches.
816 This command shares argument histories with \\[lgrep] and \\[grep-find]."
819 (grep-compute-defaults)
821 ((and grep-find-command (equal current-prefix-arg '(16)))
822 (list (read-from-minibuffer "Run: " grep-find-command
823 nil nil 'grep-find-history)
825 ((not grep-find-template)
827 (read-string "grep.el: No `grep-find-template' available. Press RET.")))
828 (t (let* ((regexp (grep-read-regexp))
829 (files (grep-read-files regexp))
830 (dir (read-directory-name "Base directory: "
831 nil default-directory t)))
832 (list regexp files dir))))))
833 (when (and (stringp regexp) (> (length regexp) 0))
835 (if (not (string= regexp grep-find-command))
836 (compilation-start regexp 'grep-mode))
837 (setq dir (file-name-as-directory (expand-file-name dir)))
838 (let ((command (grep-expand-template
841 (concat (shell-quote-argument "(")
843 (mapconcat #'shell-quote-argument
847 (shell-quote-argument ")"))
849 (and grep-find-ignored-directories
850 (concat (shell-quote-argument "(")
851 ;; we should use shell-quote-argument here
853 (mapconcat #'(lambda (dir)
854 (shell-quote-argument
856 grep-find-ignored-directories
859 (shell-quote-argument ")")
862 (if current-prefix-arg
864 (read-from-minibuffer "Confirm: "
865 command nil nil 'grep-find-history))
866 (add-to-history 'grep-find-history command))
867 (let ((default-directory dir))
868 (compilation-start command 'grep-mode))
869 ;; Set default-directory if we started rgrep in the *grep* buffer.
870 (if (eq next-error-last-buffer (current-buffer))
871 (setq default-directory dir)))))))
876 ;; arch-tag: 5a5b9169-a79d-4f38-9c38-f69615f39c4d
877 ;;; grep.el ends here