skip_stat_unmatch flag is added in fb13227 (git-diff: squelch "empty"
diffs - 2007-08-03) to ignore empty diffs caused by stat-only
dirtiness. In "diff --cached" case, stat is not invovled at all. While
the code is written in a way that no expensive I/O is done, we still
need to move all file pairs from the old queue to the new queue in
diffcore_skip_stat_unmatch(). Avoid it.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
builtin/diff.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/builtin/diff.c b/builtin/diff.c
index 0f247d2..85f97d7 100644
--- a/builtin/diff.c
+++ b/builtin/diff.c
@@ -150,9 +150,10 @@ static int builtin_diff_index(struct rev_info *revs,
perror("read_cache_preload");
return -1;
}
- } else if (read_cache() < 0) {
- perror("read_cache");
- return -1;
+ } else {
+ if (read_cache() < 0)
+ return error("read_cache: %s", strerror(errno));
+ revs->diffopt.skip_stat_unmatch = 0;
}
return run_diff_index(revs, cached);
}
--
1.8.5.2.240.g8478abd
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