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grep: unset GREP_OPTIONS before spawning external grep

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While we're at it, also unset GREP_COLOR and GREP_COLORS in case colouring
is not enabled, to be on the safe side.  The presence of these variables
alone is not sufficient to trigger coloured output with GNU grep, but
other implementations may behave differently.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2009-11-22 16:58:09 +01:00 committed by Junio C Hamano
parent 73a1d050c4
commit b482759983
2 changed files with 9 additions and 0 deletions
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4
builtin-grep.c
View file

@ -433,7 +433,11 @@ static int external_grep(struct grep_opt *opt, const char **paths, int cached)
if (opt->color_external && strlen(opt->color_external) > 0)
push_arg(opt->color_external);
} else {
unsetenv("GREP_COLOR");
unsetenv("GREP_COLORS");
}
unsetenv("GREP_OPTIONS");
hit = 0;
argc = nr;

5
t/t7002-grep.sh
View file

@ -213,6 +213,11 @@ test_expect_success 'grep -e A --and --not -e B' '
test_cmp expected actual
'
test_expect_success 'grep should ignore GREP_OPTIONS' '
GREP_OPTIONS=-v git grep " mmap bar\$" >actual &&
test_cmp expected actual
'
test_expect_success 'grep -f, non-existent file' '
test_must_fail git grep -f patterns
'