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authorEli Zaretskii <[email protected]>2009-02-28 17:26:00 +0000
committerEli Zaretskii <[email protected]>2009-02-28 17:26:00 +0000
commit8f0e19afc870cd6a049f734f51db66bfa7fa55d0 (patch)
tree5b1e5c09a364683ffbf2a9b2e926af6dce83cde3 /lisp/progmodes/grep.el
parent0a9564cb018d500e9b981769b2bd24d2c23ef26d (diff)
(grep-process-setup) [windows-nt msdos]: Use "--color=always".
Diffstat (limited to 'lisp/progmodes/grep.el')
-rw-r--r--lisp/progmodes/grep.el6
1 files changed, 5 insertions, 1 deletions
diff --git a/lisp/progmodes/grep.el b/lisp/progmodes/grep.el
index b4bcc5c88a..fa73f7f777 100644
--- a/lisp/progmodes/grep.el
+++ b/lisp/progmodes/grep.el
@@ -407,7 +407,11 @@ Set up `compilation-exit-message-function' and run `grep-setup-hook'."
;; `--color=auto' emits escape sequences on a tty rather than on a pipe,
;; thus allowing to use multiple grep filters on the command line
;; and to output escape sequences only on the final grep output
- (setenv "GREP_OPTIONS" (concat (getenv "GREP_OPTIONS") " --color=auto"))
+ (setenv "GREP_OPTIONS"
+ (concat (getenv "GREP_OPTIONS")
+ ;; Windows and DOS pipes fail `isatty' detection in Grep.
+ " --color=" (if (memq system-type '(windows-nt ms-dos))
+ "always" "auto")))
;; 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