Skip timestamp differences for diff --no-index

We display empty diffs for files whose timestamps have changed.
Usually, refreshing the index makes those empty diffs go away.
However, when not using the index they are not very useful and
there is no option to suppress them.

This forces on the skip_stat_unmatch option for diff --no-index,
suppressing any empty diffs. This option is also used for diffs
against the index when "diff.autorefreshindex" is set, but that
option does not apply to diff --no-index.

Signed-off-by: Michael Spang <mspang@uwaterloo.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/diff-no-index.c b/diff-no-index.c
index 60ed17470a6a2bf9bea202a04004b06d207a77d7..2d541d9aba11ee69525a6a1ef5da6f8a61e9e65e 100644 (file)
--- a/diff-no-index.c
+++ b/diff-no-index.c
@@ -247,6 +247,7 @@ void diff_no_index(struct rev_info *revs,
        else
                revs->diffopt.paths = argv + argc - 2;
        revs->diffopt.nr_paths = 2;
+       revs->diffopt.skip_stat_unmatch = 1;
 
        DIFF_OPT_SET(&revs->diffopt, EXIT_WITH_STATUS);
        DIFF_OPT_SET(&revs->diffopt, NO_INDEX);

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index aba53202f84b6c6c16a68f45ccfa42368e47d421..9c709022efb1b553ef53b3100d39e852117cbeda 100755 (executable)
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -74,6 +74,10 @@ test_expect_success setup '
        for i in 1 2; do echo $i; done >>dir/sub &&
        git update-index file0 dir/sub &&
 
+       mkdir dir3 &&
+       cp dir/sub dir3/sub &&
+       test-chmtime +1 dir3/sub &&
+
        git config log.showroot false &&
        git commit --amend &&
        git show-branch
@@ -262,6 +266,7 @@ diff --patch-with-raw -r initial..side
 diff --name-status dir2 dir
 diff --no-index --name-status dir2 dir
 diff --no-index --name-status -- dir2 dir
+diff --no-index dir dir3
 diff master master^ side
 EOF
 

diff --git a/t/t4013/diff.diff_--no-index_dir_dir3 b/t/t4013/diff.diff_--no-index_dir_dir3
new file mode 100644 (file)
index 0000000..2142c2b
--- /dev/null
+++ b/t/t4013/diff.diff_--no-index_dir_dir3
@@ -0,0 +1,2 @@
+$ git diff --no-index dir dir3
+$