"git rebase --fork-point master" used to work OK, as it internally
called "git merge-base --fork-point" that knew how to handle short
refname and dwim it to the full refname before calling the
underlying get_fork_point() function.
This is no longer true after the command was rewritten in C, as its
internall call made directly to get_fork_point() does not dwim a
short ref.
Move the "dwim the refname argument to the full refname" logic that
is used in "git merge-base" to the underlying get_fork_point()
function, so that the other caller of the function in the
implementation of "git rebase" behaves the same way to fix this
regression.
Signed-off-by: Alex Torok <alext9@xxxxxxxxx>
[jc: revamped the fix and used Alex's tests]
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
* I was about to discard stalled topics and this caught my eyes.
builtin/merge-base.c | 12 +-----------
commit.c | 15 +++++++++++++--
t/t3431-rebase-fork-point.sh | 20 ++++++++++++++++++++
3 files changed, 34 insertions(+), 13 deletions(-)
diff --git a/builtin/merge-base.c b/builtin/merge-base.c
index e3f8da13b6..6719ac198d 100644
--- a/builtin/merge-base.c
+++ b/builtin/merge-base.c
@@ -114,26 +114,16 @@ static int handle_is_ancestor(int argc, const char **argv)
static int handle_fork_point(int argc, const char **argv)
{
struct object_id oid;
- char *refname;
struct commit *derived, *fork_point;
const char *commitname;
- switch (dwim_ref(argv[0], strlen(argv[0]), &oid, &refname)) {
- case 0:
- die("No such ref: '%s'", argv[0]);
- case 1:
- break; /* good */
- default:
- die("Ambiguous refname: '%s'", argv[0]);
- }
-
commitname = (argc == 2) ? argv[1] : "HEAD";
if (get_oid(commitname, &oid))
die("Not a valid object name: '%s'", commitname);
derived = lookup_commit_reference(the_repository, &oid);
- fork_point = get_fork_point(refname, derived);
+ fork_point = get_fork_point(argv[0], derived);
if (!fork_point)
return 1;
diff --git a/commit.c b/commit.c
index 40890ae7ce..016f14fe95 100644
--- a/commit.c
+++ b/commit.c
@@ -903,12 +903,22 @@ struct commit *get_fork_point(const char *refname, struct commit *commit)
struct commit_list *bases;
int i;
struct commit *ret = NULL;
+ char *full_refname;
+
+ switch (dwim_ref(refname, strlen(refname), &oid, &full_refname)) {
+ case 0:
+ die("No such ref: '%s'", refname);
+ case 1:
+ break; /* good */
+ default:
+ die("Ambiguous refname: '%s'", refname);
+ }
memset(&revs, 0, sizeof(revs));
revs.initial = 1;
- for_each_reflog_ent(refname, collect_one_reflog_ent, &revs);
+ for_each_reflog_ent(full_refname, collect_one_reflog_ent, &revs);
- if (!revs.nr && !get_oid(refname, &oid))
+ if (!revs.nr)
add_one_commit(&oid, &revs);
for (i = 0; i < revs.nr; i++)
@@ -934,6 +944,7 @@ struct commit *get_fork_point(const char *refname, struct commit *commit)
cleanup_return:
free_commit_list(bases);
+ free(full_refname);
return ret;
}
diff --git a/t/t3431-rebase-fork-point.sh b/t/t3431-rebase-fork-point.sh
index 78851b9a2a..172562789e 100755
--- a/t/t3431-rebase-fork-point.sh
+++ b/t/t3431-rebase-fork-point.sh
@@ -47,11 +47,31 @@ test_rebase 'G F B A' --keep-base
test_rebase 'G F C E D B A' --no-fork-point
test_rebase 'G F C D B A' --no-fork-point --onto D
test_rebase 'G F C B A' --no-fork-point --keep-base
+
test_rebase 'G F E D B A' --fork-point refs/heads/master
+test_rebase 'G F E D B A' --fork-point master
+
test_rebase 'G F D B A' --fork-point --onto D refs/heads/master
+test_rebase 'G F D B A' --fork-point --onto D master
+
test_rebase 'G F B A' --fork-point --keep-base refs/heads/master
+test_rebase 'G F B A' --fork-point --keep-base master
+
test_rebase 'G F C E D B A' refs/heads/master
+test_rebase 'G F C E D B A' master
+
test_rebase 'G F C D B A' --onto D refs/heads/master
+test_rebase 'G F C D B A' --onto D master
+
test_rebase 'G F C B A' --keep-base refs/heads/master
+test_rebase 'G F C B A' --keep-base master
+
+test_expect_success 'git rebase --fork-point with ambigous refname' '
+ git checkout master &&
+ git checkout -b one &&
+ git checkout side &&
+ git tag one &&
+ test_must_fail git rebase --fork-point --onto D one
+'
test_done
