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-rw-r--r--sha1_name.c8
-rwxr-xr-xt/t0100-previous.sh15
2 files changed, 19 insertions, 4 deletions
diff --git a/sha1_name.c b/sha1_name.c
index 3820f28ae7..371a49d98d 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1055,9 +1055,13 @@ int interpret_branch_name(const char *name, struct strbuf *buf)
int strbuf_branchname(struct strbuf *sb, const char *name)
{
int len = strlen(name);
- if (interpret_branch_name(name, sb) == len)
+ int used = interpret_branch_name(name, sb);
+
+ if (used == len)
return 0;
- strbuf_add(sb, name, len);
+ if (used < 0)
+ used = 0;
+ strbuf_add(sb, name + used, len - used);
return len;
}
diff --git a/t/t0100-previous.sh b/t/t0100-previous.sh
index 315b9b3f10..e0a6940232 100755
--- a/t/t0100-previous.sh
+++ b/t/t0100-previous.sh
@@ -27,6 +27,7 @@ test_expect_success 'merge @{-1}' '
test_commit B &&
git checkout A &&
test_commit C &&
+ test_commit D &&
git branch -f master B &&
git branch -f other &&
git checkout other &&
@@ -35,14 +36,24 @@ test_expect_success 'merge @{-1}' '
git cat-file commit HEAD | grep "Merge branch '\''other'\''"
'
-test_expect_success 'merge @{-1} when there is not enough switches yet' '
+test_expect_success 'merge @{-1}~1' '
+ git checkout master &&
+ git reset --hard B &&
+ git checkout other &&
+ git checkout master &&
+ git merge @{-1}~1 &&
+ git cat-file commit HEAD >actual &&
+ grep "Merge branch '\''other'\''" actual
+'
+
+test_expect_success 'merge @{-100} before checking out that many branches yet' '
git reflog expire --expire=now &&
git checkout -f master &&
git reset --hard B &&
git branch -f other C &&
git checkout other &&
git checkout master &&
- test_must_fail git merge @{-12}
+ test_must_fail git merge @{-100}
'
test_done