Commit 277df088 authored by Juri Linkov's avatar Juri Linkov

(grep-highlight-matches): New defcustom.

(grep-regexp-alist): Add rule to highlight grep matches.
(grep-process-setup): Set env-vars GREP_OPTIONS and GREP_COLOR.
parent 9dc3a46a
......@@ -64,6 +64,21 @@ will be parsed and highlighted as soon as you try to move to them."
: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.
......@@ -230,6 +245,23 @@ Notice that using \\[next-error] or \\[compile-goto-error] modifies
'(("^\\(.+?\\)[:( \t]+\
\\(?:-\\(?:\\([0-9]+\\)\\3\\)?\\.?\\([0-9]+\\)?\\)?[:) \t]" 1 (2 . 5) (4 . 6))
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
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'.")
......@@ -300,6 +332,10 @@ This variable's value takes effect when `grep-compute-defaults' is called.")
(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)
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