range-diff: offer --left-only/--right-only options
When comparing commit ranges, one is frequently interested only in one
side, such as asking the question "Has this patch that I submitted to
the Git mailing list been applied?": one would only care about the part
of the output that corresponds to the commits in a local branch.
To make that possible, imitate the `git rev-list` options `--left-only`
and `--right-only`.
This addresses https://github.com/gitgitgadget/git/issues/206
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t3206-range-diff.sh b/t/t3206-range-diff.sh
index 6eb344b..323439d 100755
--- a/t/t3206-range-diff.sh
+++ b/t/t3206-range-diff.sh
@@ -717,4 +717,19 @@
test_cmp expect actual
'
+test_expect_success '--left-only/--right-only' '
+ git switch --orphan left-right &&
+ test_commit first &&
+ test_commit unmatched &&
+ test_commit common &&
+ git switch -C left-right first &&
+ git cherry-pick common &&
+
+ git range-diff -s --left-only ...common >actual &&
+ head_oid=$(git rev-parse --short HEAD) &&
+ common_oid=$(git rev-parse --short common) &&
+ echo "1: $head_oid = 2: $common_oid common" >expect &&
+ test_cmp expect actual
+'
+
test_done
