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sequencer: handle rebase-merges for "onto" message 

In order to work correctly, git-rebase --rebase-merges needs to make
initial todo list with unique labels.

Those unique labels is being handled by employing a hashmap and
appending an unique number if any duplicate is found.

But, we forget that beside those labels for side branches,
we also have a special label `onto' for our so-called new-base.

In a special case that any of those labels for side branches named
`onto', git will run into trouble.

Correct it.

Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Doan Tran Cong Danh 2019-11-18 18:57:47 +07:00 committed by Junio C Hamano
parent cd5522271f
commit e02058a729
2 changed files with 26 additions and 0 deletions
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5
sequencer.c
View File

@ -4560,10 +4560,15 @@ static int make_script_with_merges(struct pretty_print_context *pp,
strbuf_init(&state.buf, 32);
if (revs->cmdline.nr && (revs->cmdline.rev[0].flags & BOTTOM)) {
struct labels_entry *onto_label_entry;
struct object_id *oid = &revs->cmdline.rev[0].item->oid;
FLEX_ALLOC_STR(entry, string, "onto");
oidcpy(&entry->entry.oid, oid);
oidmap_put(&state.commit2label, entry);
FLEX_ALLOC_STR(onto_label_entry, label, "onto");
hashmap_entry_init(&onto_label_entry->entry, strihash("onto"));
hashmap_add(&state.labels, &onto_label_entry->entry);
}
/*

21
t/t3430-rebase-merges.sh
View File

@ -474,4 +474,25 @@ test_expect_success '--rebase-merges with commit that can generate bad character
git rebase --rebase-merges --force-rebase E
'
test_expect_success '--rebase-merges with message matched with onto label' '
git checkout -b onto-label E &&
git merge -m onto G &&
git rebase --rebase-merges --force-rebase E &&
test_cmp_graph <<-\EOF
* onto
|\
| * G
| * F
* | E
|\ \
| * | B
* | | D
| |/
|/|
* | C
|/
* A
EOF
'
test_done