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dir.c:trim_trailing_spaces(): fix for " \ " sequence

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Discard the unnecessary 'nr_spaces' variable, remove 'strlen()' and
improve the 'if' structure.  Switch to pointers instead of integers
to control the loop.

Slightly more rare occurrences of 'text  \    ' with a backslash
in between spaces are handled correctly.  Namely, the code in
7e2e4b37 (dir: ignore trailing spaces in exclude patterns, 2014-02-09)
does not reset 'last_space' when a backslash is encountered and the above
line stays intact as a result.

Add a test at the end of t/t0008-ignores.sh to exhibit this behavior.

Signed-off-by: Pasha Bolokhov <pasha.bolokhov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Pasha Bolokhov 2014-06-02 15:36:56 -07:00 committed by Junio C Hamano
parent bce14aa132
commit e61a6c1d82
2 changed files with 41 additions and 14 deletions
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32
dir.c
View File

@ -508,21 +508,25 @@ void clear_exclude_list(struct exclude_list *el)
static void trim_trailing_spaces(char *buf)
{
int i, last_space = -1, nr_spaces, len = strlen(buf);
for (i = 0; i < len; i++)
if (buf[i] == '\\')
i++;
else if (buf[i] == ' ') {
if (last_space == -1) {
last_space = i;
nr_spaces = 1;
} else
nr_spaces++;
} else
last_space = -1;
char *p, *last_space = NULL;
if (last_space != -1 && last_space + nr_spaces == len)
buf[last_space] = '\0';
for (p = buf; *p; p++)
switch (*p) {
case ' ':
if (!last_space)
last_space = p;
break;
case '\\':
p++;
if (!*p)
return;
/* fallthrough */
default:
last_space = NULL;
}
if (last_space)
*last_space = '\0';
}
int add_excludes_from_file_to_list(const char *fname,

23
t/t0008-ignores.sh
View File

@ -806,4 +806,27 @@ test_expect_success !MINGW 'quoting allows trailing whitespace' '
test_cmp err.expect err
'
test_expect_success NOT_MINGW,NOT_CYGWIN 'correct handling of backslashes' '
rm -rf whitespace &&
mkdir whitespace &&
>"whitespace/trailing 1 " &&
>"whitespace/trailing 2 \\\\" &&
>"whitespace/trailing 3 \\\\" &&
>"whitespace/trailing 4 \\ " &&
>"whitespace/trailing 5 \\ \\ " &&
>"whitespace/trailing 6 \\a\\" &&
>whitespace/untracked &&
echo "whitespace/trailing 1 \\ " >ignore &&
echo "whitespace/trailing 2 \\\\\\\\\\\\\\\\" >>ignore &&
echo "whitespace/trailing 3 \\\\\\\\\\\\\\\\ " >>ignore &&
echo "whitespace/trailing 4 \\\\\\\\\\\\ " >>ignore &&
echo "whitespace/trailing 5 \\\\\\\\ \\\\\\\\\\\\ " >>ignore &&
echo "whitespace/trailing 6 \\\\\\\\a\\\\\\\\" >>ignore &&
echo whitespace/untracked >expect &&
>err.expect &&
git ls-files -o -X ignore whitespace >actual 2>err &&
test_cmp expect actual &&
test_cmp err.expect err
'
test_done