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authorLibravatar Johannes Schindelin <johannes.schindelin@gmx.de>2018-11-12 12:54:49 -0800
committerLibravatar Junio C Hamano <gitster@pobox.com>2018-11-13 13:02:52 +0900
commit22cb3835b90f80b2de2bc8f5ff3a9e8eed5ff40a (patch)
treedaf7ced071d9155cc8825821726dffc6adf541e6
parentGit 2.19.1 (diff)
downloadtgif-22cb3835b90f80b2de2bc8f5ff3a9e8eed5ff40a.tar.xz
apply --recount: allow "no-op hunks"
When editing patches e.g. in `git add -e`, it is quite common that a hunk ends up having no -/+ lines, i.e. it is now supposed to do nothing. This use case was broken by ad6e8ed37bc1 (apply: reject a hunk that does not do anything, 2015-06-01) with the good intention of catching a very real, different issue in hand-edited patches. So let's use the `--recount` option as the tell-tale whether the user would actually be okay with no-op hunks. Add a test case to make sure that this use case does not regress again. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Reviewed-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--apply.c2
-rwxr-xr-xt/t4136-apply-check.sh12
2 files changed, 13 insertions, 1 deletions
diff --git a/apply.c b/apply.c
index e485fbc6bc..5fb8ecf22c 100644
--- a/apply.c
+++ b/apply.c
@@ -1747,7 +1747,7 @@ static int parse_fragment(struct apply_state *state,
}
if (oldlines || newlines)
return -1;
- if (!deleted && !added)
+ if (!patch->recount && !deleted && !added)
return -1;
fragment->leading = leading;
diff --git a/t/t4136-apply-check.sh b/t/t4136-apply-check.sh
index 6d92872318..4c3f264a63 100755
--- a/t/t4136-apply-check.sh
+++ b/t/t4136-apply-check.sh
@@ -29,6 +29,18 @@ test_expect_success 'apply exits non-zero with no-op patch' '
test_must_fail git apply --check input
'
+test_expect_success '`apply --recount` allows no-op patch' '
+ echo 1 >1 &&
+ git apply --recount --check <<-\EOF
+ diff --get a/1 b/1
+ index 6696ea4..606eddd 100644
+ --- a/1
+ +++ b/1
+ @@ -1,1 +1,1 @@
+ 1
+ EOF
+'
+
test_expect_success 'invalid combination: create and copy' '
test_must_fail git apply --check - <<-\EOF
diff --git a/1 b/2