-;;; grep.el --- run Grep as inferior of Emacs, parse match messages
+;;; grep.el --- run `grep' and display the results
;; Copyright (C) 1985-1987, 1993-1999, 2001-2011
;; Free Software Foundation, Inc.
(defgroup grep nil
- "Run grep as inferior of Emacs, parse error messages."
+ "Run `grep' and display the results."
:group 'tools
:group 'processes)
Some grep programs are able to surround matches with special
markers in grep output. Such markers can be used to highlight
-matches in grep mode.
+matches in grep mode. This requires `font-lock-mode' to be active
+in grep buffers, so if you have globally disabled font-lock-mode,
+you will not get highlighting.
This option sets the environment variable GREP_COLORS to specify
markers for highlighting and GREP_OPTIONS to add the --color
(defvar grep-mode-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map compilation-minor-mode-map)
- (define-key map " " 'scroll-up)
- (define-key map "\^?" 'scroll-down)
+ (define-key map " " 'scroll-up-command)
+ (define-key map "\^?" 'scroll-down-command)
(define-key map "\C-c\C-f" 'next-error-follow-minor-mode)
(define-key map "\r" 'compile-goto-error) ;; ?
"The most recent grep buffer.
A grep buffer becomes most recent when you select Grep mode in it.
Notice that using \\[next-error] or \\[compile-goto-error] modifies
-`complation-last-buffer' rather than `grep-last-buffer'.")
+`compilation-last-buffer' rather than `grep-last-buffer'.")
;;;###autoload
(defconst grep-regexp-alist
- '(("^\\(.+?\\)\\(:[ \t]*\\)\\([1-9][0-9]*\\)\\2"
- 1 3)
+ '(
;; Rule to match column numbers is commented out since no known grep
;; produces them
- ;; ("^\\(.+?\\)\\(:[ \t]*\\)\\([0-9]+\\)\\2\\(?:\\([0-9]+\\)\\(?:-\\([0-9]+\\)\\)?\\2\\)?"
+ ;; ("^\\(.+?\\)\\(:[ \t]*\\)\\([1-9][0-9]*\\)\\2\\(?:\\([1-9][0-9]*\\)\\(?:-\\([1-9][0-9]*\\)\\)?\\2\\)?"
;; 1 3 (4 . 5))
;; Note that we want to use as tight a regexp as we can to try and
;; handle weird file names (with colons in them) as well as possible.
- ;; E.g. we use [1-9][0-9]* rather than [0-9]+ so as to accept ":034:" in
- ;; file names.
- ("^\\(\\(.+?\\):\\([1-9][0-9]*\\):\\).*?\
-\\(\033\\[01;31m\\(?:\033\\[K\\)?\\)\\(.*?\\)\\(\033\\[[0-9]*m\\)"
- 2 3
- ;; Calculate column positions (beg . end) of first grep match on a line
+ ;; E.g. we use [1-9][0-9]* rather than [0-9]+ so as to accept ":034:"
+ ;; in file names.
+ ("^\\(.+?\\)\\(:[ \t]*\\)\\([1-9][0-9]*\\)\\2"
+ 1 3
+ ;; Calculate column positions (col . end-col) of first grep match on a line
((lambda ()
- (setq compilation-error-screen-columns nil)
- (- (match-beginning 4) (match-end 1)))
+ (when grep-highlight-matches
+ (let* ((beg (match-end 0))
+ (end (save-excursion (goto-char beg) (line-end-position)))
+ (mbeg (text-property-any beg end 'font-lock-face 'match)))
+ (when mbeg
+ (- mbeg beg)))))
.
- (lambda () (- (match-end 5) (match-end 1)
- (- (match-end 4) (match-beginning 4)))))
- nil 1)
+ (lambda ()
+ (when grep-highlight-matches
+ (let* ((beg (match-end 0))
+ (end (save-excursion (goto-char beg) (line-end-position)))
+ (mbeg (text-property-any beg end 'font-lock-face 'match))
+ (mend (and mbeg (next-single-property-change mbeg 'font-lock-face nil end))))
+ (when mend
+ (- mend beg)))))))
("^Binary file \\(.+\\) matches$" 1 nil nil 0 1))
"Regexp used to match grep hits. See `compilation-error-regexp-alist'.")
(0 '(face nil compilation-message nil help-echo nil mouse-face nil) t)
(1 grep-error-face)
(2 grep-error-face nil t))
- ("^.+?-[0-9]+-.*\n" (0 grep-context-face))
- ;; Highlight grep matches and delete markers.
- ;; FIXME: Modifying the buffer text from font-lock is a bad idea!
- ("\\(\033\\[01;31m\\)\\(.*?\\)\\(\033\\[[0-9]*m\\)"
- ;; Refontification does not work after the markers have been
- ;; deleted. So we use the font-lock-face property here as Font
- ;; Lock does not clear that.
- (2 (list 'face nil 'font-lock-face grep-match-face))
- ((lambda (bound))
- (progn
- ;; Delete markers with `replace-match' because it updates
- ;; the match-data, whereas `delete-region' would render it obsolete.
- (syntax-ppss-flush-cache (match-beginning 0))
- (replace-match "" t t nil 3)
- (replace-match "" t t nil 1))))
- ("\033\\[[0-9;]*[mK]"
- ;; Delete all remaining escape sequences
- ((lambda (bound))
- (syntax-ppss-flush-cache (match-beginning 0))
- (replace-match "" t t))))
+ ("^.+?-[0-9]+-.*\n" (0 grep-context-face)))
"Additional things to highlight in grep output.
This gets tacked on the end of the generated expressions.")
;;;###autoload
(defvar grep-find-use-xargs nil
- "Non-nil means that `grep-find' uses the `xargs' utility by default.
-If `exec', use `find -exec'.
+ "How to invoke find and grep.
+If `exec', use `find -exec {} ;'.
+If `exec-plus' use `find -exec {} +'.
If `gnu', use `find -print0' and `xargs -0'.
-Any other non-nil value means to use `find -print' and `xargs'.
+Any other value means to use `find -print' and `xargs'.
This variable's value takes effect when `grep-compute-defaults' is called.")
(when (eq grep-highlight-matches 'auto-detect)
(grep-compute-defaults))
(unless (or (eq grep-highlight-matches 'auto-detect)
- (null grep-highlight-matches))
+ (null grep-highlight-matches)
+ ;; Don't output color escapes if they can't be
+ ;; highlighted with `font-lock-face' by `grep-filter'.
+ (null font-lock-mode))
;; `setenv' modifies `process-environment' let-bound in `compilation-start'
;; Any TERM except "dumb" allows GNU grep to use `--color=auto'
(setenv "TERM" "emacs-grep")
;; GREP_COLOR is used in GNU grep 2.5.1, but deprecated in later versions
(setenv "GREP_COLOR" "01;31")
;; GREP_COLORS is used in GNU grep 2.5.2 and later versions
- (setenv "GREP_COLORS" "mt=01;31:fn=:ln=:bn=:se=:ml=:cx=:ne"))
+ (setenv "GREP_COLORS" "mt=01;31:fn=:ln=:bn=:se=:sl=:cx=:ne"))
(set (make-local-variable 'compilation-exit-message-function)
(lambda (status code msg)
(if (eq status 'exit)
- (cond ((zerop code)
+ ;; This relies on the fact that `compilation-start'
+ ;; sets buffer-modified to nil before running the command,
+ ;; so the buffer is still unmodified if there is no output.
+ (cond ((and (zerop code) (buffer-modified-p))
'("finished (matches found)\n" . "matched"))
- ((= code 1)
+ ((not (buffer-modified-p))
'("finished with no matches found\n" . "no match"))
(t
(cons msg code)))
(cons msg code))))
(run-hooks 'grep-setup-hook))
+(defun grep-filter ()
+ "Handle match highlighting escape sequences inserted by the grep process.
+This function is called from `compilation-filter-hook'."
+ (save-excursion
+ (forward-line 0)
+ (let ((end (point)) beg)
+ (goto-char compilation-filter-start)
+ (forward-line 0)
+ (setq beg (point))
+ ;; Only operate on whole lines so we don't get caught with part of an
+ ;; escape sequence in one chunk and the rest in another.
+ (when (< (point) end)
+ (setq end (copy-marker end))
+ ;; Highlight grep matches and delete marking sequences.
+ (while (re-search-forward "\033\\[0?1;31m\\(.*?\\)\033\\[[0-9]*m" end 1)
+ (replace-match (propertize (match-string 1)
+ 'face nil 'font-lock-face grep-match-face)
+ t t))
+ ;; Delete all remaining escape sequences
+ (goto-char beg)
+ (while (re-search-forward "\033\\[[0-9;]*[mK]" end 1)
+ (replace-match "" t t))))))
+
(defun grep-probe (command args &optional func result)
(let (process-file-side-effects)
(equal (condition-case nil
(unless grep-find-use-xargs
(setq grep-find-use-xargs
(cond
+ ((grep-probe find-program
+ `(nil nil nil ,null-device "-exec" "echo"
+ "{}" "+"))
+ 'exec-plus)
((and
(grep-probe find-program `(nil nil nil ,null-device "-print0"))
(grep-probe xargs-program `(nil nil nil "-0" "-e" "echo")))
;; forward slashes as directory separators.
(format "%s . -type f -print0 | \"%s\" -0 -e %s"
find-program xargs-program grep-command))
- ((eq grep-find-use-xargs 'exec)
+ ((memq grep-find-use-xargs '(exec exec-plus))
(let ((cmd0 (format "%s . -type f -exec %s"
- find-program grep-command)))
+ find-program grep-command))
+ (null (if grep-use-null-device
+ (format "%s " null-device)
+ "")))
(cons
- (format "%s {} %s %s"
- cmd0 null-device
- (shell-quote-argument ";"))
+ (if (eq grep-find-use-xargs 'exec-plus)
+ (format "%s %s{} +" cmd0 null)
+ (format "%s {} %s%s" cmd0 null
+ (shell-quote-argument ";")))
(1+ (length cmd0)))))
(t
(format "%s . -type f -print | \"%s\" %s"
(unless grep-find-template
(setq grep-find-template
(let ((gcmd (format "%s <C> %s <R>"
- grep-program grep-options)))
+ grep-program grep-options))
+ (null (if grep-use-null-device
+ (format "%s " null-device)
+ "")))
(cond ((eq grep-find-use-xargs 'gnu)
(format "%s . <X> -type f <F> -print0 | \"%s\" -0 -e %s"
find-program xargs-program gcmd))
((eq grep-find-use-xargs 'exec)
- (format "%s . <X> -type f <F> -exec %s {} %s %s"
- find-program gcmd null-device
+ (format "%s . <X> -type f <F> -exec %s {} %s%s"
+ find-program gcmd null
(shell-quote-argument ";")))
+ ((eq grep-find-use-xargs 'exec-plus)
+ (format "%s . <X> -type f <F> -exec %s %s{} +"
+ find-program gcmd null))
(t
(format "%s . <X> -type f <F> -print | \"%s\" %s"
find-program xargs-program gcmd))))))))
grep-hit-face)
(set (make-local-variable 'compilation-error-regexp-alist)
grep-regexp-alist)
+ ;; compilation-directory-matcher can't be nil, so we set it to a regexp that
+ ;; can never match.
+ (set (make-local-variable 'compilation-directory-matcher) '("\\`a\\`"))
(set (make-local-variable 'compilation-process-setup-function)
'grep-process-setup)
- (set (make-local-variable 'compilation-disable-input) t))
+ (set (make-local-variable 'compilation-disable-input) t)
+ (set (make-local-variable 'compilation-error-screen-columns)
+ grep-error-screen-columns)
+ (add-hook 'compilation-filter-hook 'grep-filter nil t))
;;;###autoload
(unless (and dir (file-directory-p dir) (file-readable-p dir))
(setq dir default-directory))
(if (null files)
- (if (not (string= regexp grep-find-command))
+ (if (not (string= regexp (if (consp grep-find-command)
+ (car grep-find-command)
+ grep-find-command)))
(compilation-start regexp 'grep-mode))
(setq dir (file-name-as-directory (expand-file-name dir)))
(require 'find-dired) ; for `find-name-arg'
dir
(concat
(and grep-find-ignored-directories
- (concat (shell-quote-argument "(")
+ (concat "-type d "
+ (shell-quote-argument "(")
;; we should use shell-quote-argument here
" -path "
(mapconcat
HCoop / bpt / emacs.git / blobdiff