:version "21.4"
:group 'grep)
+(defcustom grep-highlight-matches t
+ "*Non-nil to use special markers to highlight grep matches.
+
+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.
+
+This option sets the environment variable GREP_COLOR to specify
+markers for highlighting and GREP_OPTIONS to add the --color
+option in front of any explicit grep options before starting
+the grep."
+ :type 'boolean
+ :version "21.4"
+ :group 'grep)
+
(defcustom grep-scroll-output nil
"*Non-nil to scroll the *grep* buffer window as output appears.
'(("^\\(.+?\\)[:( \t]+\
\\([0-9]+\\)\\([.:]?\\)\\([0-9]+\\)?\
\\(?:-\\(?:\\([0-9]+\\)\\3\\)?\\.?\\([0-9]+\\)?\\)?[:) \t]" 1 (2 . 5) (4 . 6))
+ ("^\\(.+?\\)[:(]+\\([0-9]+\\)\\([:)]\\).*?\\(\033\\[01;41m\\)\\(.*?\\)\\(\033\\[00m\\)"
+ 1 2
+ ((lambda ()
+ (setq compilation-error-screen-columns nil)
+ (- (match-beginning 5) (match-end 3) 8))
+ .
+ (lambda () (- (match-end 5) (match-end 3) 8)))
+ nil nil
+ (4 (list 'face nil 'invisible t 'intangible t))
+ (5 (list 'face compilation-column-face))
+ (6 (list 'face nil 'invisible t 'intangible t))
+ ;; highlight other matches on the same line
+ ("\\(\033\\[01;41m\\)\\(.*?\\)\\(\033\\[00m\\)"
+ nil nil
+ (1 (list 'face nil 'invisible t 'intangible t))
+ (2 (list 'face compilation-column-face) t)
+ (3 (list 'face nil 'invisible t 'intangible t))))
("^Binary file \\(.+\\) matches$" 1 nil nil 1))
"Regexp used to match grep hits. See `compilation-error-regexp-alist'.")
(defun grep-process-setup ()
"Setup compilation variables and buffer for `grep'.
Set up `compilation-exit-message-function' and run `grep-setup-hook'."
+ (when grep-highlight-matches
+ ;; Modify `process-environment' locally bound in `compilation-start'
+ (setenv "GREP_OPTIONS" (concat (getenv "GREP_OPTIONS") " --color=always"))
+ (setenv "GREP_COLOR" "01;41"))
(set (make-local-variable 'compilation-exit-message-function)
(lambda (status code msg)
(if (eq status 'exit)