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Merge branch 'nd/diff-quiet-stat-dirty'

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"git diff --quiet -- pathspec1 pathspec2" sometimes did not return
correct status value.

* nd/diff-quiet-stat-dirty:
  diff: do not quit early on stat-dirty files
  diff.c: move diffcore_skip_stat_unmatch core logic out for reuse later
This commit is contained in:
Junio C Hamano 2014-02-27 14:01:21 -08:00
commit 1e745453fe
3 changed files with 51 additions and 24 deletions
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67
diff.c
View File

@ -4697,6 +4697,38 @@ static int diff_filespec_is_identical(struct diff_filespec *one,
return !memcmp(one->data, two->data, one->size);
}
static int diff_filespec_check_stat_unmatch(struct diff_filepair *p)
{
if (p->done_skip_stat_unmatch)
return p->skip_stat_unmatch_result;
p->done_skip_stat_unmatch = 1;
p->skip_stat_unmatch_result = 0;
/*
* 1. Entries that come from stat info dirtiness
* always have both sides (iow, not create/delete),
* one side of the object name is unknown, with
* the same mode and size. Keep the ones that
* do not match these criteria. They have real
* differences.
*
* 2. At this point, the file is known to be modified,
* with the same mode and size, and the object
* name of one side is unknown. Need to inspect
* the identical contents.
*/
if (!DIFF_FILE_VALID(p->one) || /* (1) */
!DIFF_FILE_VALID(p->two) ||
(p->one->sha1_valid && p->two->sha1_valid) ||
(p->one->mode != p->two->mode) ||
diff_populate_filespec(p->one, 1) ||
diff_populate_filespec(p->two, 1) ||
(p->one->size != p->two->size) ||
!diff_filespec_is_identical(p->one, p->two)) /* (2) */
p->skip_stat_unmatch_result = 1;
return p->skip_stat_unmatch_result;
}
static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
{
int i;
@ -4707,27 +4739,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
/*
* 1. Entries that come from stat info dirtiness
* always have both sides (iow, not create/delete),
* one side of the object name is unknown, with
* the same mode and size. Keep the ones that
* do not match these criteria. They have real
* differences.
*
* 2. At this point, the file is known to be modified,
* with the same mode and size, and the object
* name of one side is unknown. Need to inspect
* the identical contents.
*/
if (!DIFF_FILE_VALID(p->one) || /* (1) */
!DIFF_FILE_VALID(p->two) ||
(p->one->sha1_valid && p->two->sha1_valid) ||
(p->one->mode != p->two->mode) ||
diff_populate_filespec(p->one, 1) ||
diff_populate_filespec(p->two, 1) ||
(p->one->size != p->two->size) ||
!diff_filespec_is_identical(p->one, p->two)) /* (2) */
if (diff_filespec_check_stat_unmatch(p))
diff_q(&outq, p);
else {
/*
@ -4890,6 +4902,7 @@ void diff_change(struct diff_options *options,
unsigned old_dirty_submodule, unsigned new_dirty_submodule)
{
struct diff_filespec *one, *two;
struct diff_filepair *p;
if (S_ISGITLINK(old_mode) && S_ISGITLINK(new_mode) &&
is_submodule_ignored(concatpath, options))
@ -4916,10 +4929,16 @@ void diff_change(struct diff_options *options,
fill_filespec(two, new_sha1, new_sha1_valid, new_mode);
one->dirty_submodule = old_dirty_submodule;
two->dirty_submodule = new_dirty_submodule;
p = diff_queue(&diff_queued_diff, one, two);
diff_queue(&diff_queued_diff, one, two);
if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
DIFF_OPT_SET(options, HAS_CHANGES);
if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
return;
if (DIFF_OPT_TST(options, QUICK) && options->skip_stat_unmatch &&
!diff_filespec_check_stat_unmatch(p))
return;
DIFF_OPT_SET(options, HAS_CHANGES);
}
struct diff_filepair *diff_unmerge(struct diff_options *options, const char *path)

2
diffcore.h
View File

@ -68,6 +68,8 @@ struct diff_filepair {
unsigned broken_pair : 1;
unsigned renamed_pair : 1;
unsigned is_unmerged : 1;
unsigned done_skip_stat_unmatch : 1;
unsigned skip_stat_unmatch_result : 1;
};
#define DIFF_PAIR_UNMERGED(p) ((p)->is_unmerged)

6
t/t4035-diff-quiet.sh
View File

@ -148,4 +148,10 @@ test_expect_success 'git diff --ignore-all-space, both files outside repo' '
)
'
test_expect_success 'git diff --quiet ignores stat-change only entries' '
test-chmtime +10 a &&
echo modified >>b &&
test_expect_code 1 git diff --quiet
'
test_done