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grep: fix word-regexp at the beginning of lines

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After bol is forwarded, it doesn't represent the beginning of the line
any more.  This means that the beginning-of-line marker (^) mustn't match,
i.e. the regex flag REG_NOTBOL needs to be set.

This bug was introduced by fb62eb7fab
("grep -w: forward to next possible position after rejected match").

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 2009-05-23 13:45:26 +02:00 committed by Junio C Hamano
parent e701fadb9e
commit dbb6a4ada6
2 changed files with 9 additions and 1 deletions
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1
grep.c
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@ -360,6 +360,7 @@ static int match_one_pattern(struct grep_pat *p, char *bol, char *eol,
bol = pmatch[0].rm_so + bol + 1;
while (word_char(bol[-1]) && bol < eol)
bol++;
eflags |= REG_NOTBOL;
if (bol < eol)
goto again;
}

9
t/t7002-grep.sh
View file

@ -16,12 +16,13 @@ test_expect_success setup '
echo foo mmap bar_mmap
echo foo_mmap bar mmap baz
} >file &&
echo ww w >w &&
echo x x xx x >x &&
echo y yy >y &&
echo zzz > z &&
mkdir t &&
echo test >t/t &&
git add file x y z t/t &&
git add file w x y z t/t &&
test_tick &&
git commit -m initial
'
@ -48,6 +49,12 @@ do
diff expected actual
'
test_expect_success "grep -w $L (w)" '
: >expected &&
! git grep -n -w -e "^w" >actual &&
test_cmp expected actual
'
test_expect_success "grep -w $L (x)" '
{
echo ${HC}x:1:x x xx x