On Thu, Jan 18, 2018 at 7:35 AM, Johannes Schindelin
<johannes.schindelin@xxxxxx> wrote:
> In the previous patches, we implemented the basic functionality of the
> `git rebase -i --recreate-merges` command, in particular the `merge`
> command to create merge commits in the sequencer.
>
> The interactive rebase is a lot more these days, though, than a simple
> cherry-pick in a loop. For example, it calls the post-rewrite hook (if
> any) after rebasing with a mapping of the old->new commits. And the
> interactive rebase also supports the autosquash mode, where commits
> whose oneline is of the form `fixup! <oneline>` or `squash! <oneline>`
> are rearranged to amend commits whose oneline they match.
>
> This patch implements the post-rewrite and autosquash handling for the
> `merge` command we just introduced. The other commands that were added
> recently (`label`, `reset` and `bud`) do not create new commits,
> therefore post-rewrite & autosquash do not need to handle them.
>
> Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
> ---
> refs.c | 3 ++-
> sequencer.c | 10 +++++++---
> t/t3430-rebase-recreate-merges.sh | 39 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 48 insertions(+), 4 deletions(-)
>
> diff --git a/refs.c b/refs.c
> index 20ba82b4343..e8b84c189ff 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -600,7 +600,8 @@ int dwim_log(const char *str, int len, struct object_id *oid, char **log)
> static int is_per_worktree_ref(const char *refname)
> {
> return !strcmp(refname, "HEAD") ||
> - starts_with(refname, "refs/bisect/");
> + starts_with(refname, "refs/bisect/") ||
> + starts_with(refname, "refs/rewritten/");
> }
Would this part make more sense to move into the commit that
introduces writing these refs, or does it only matter once you start
this step here?
>
> static int is_pseudoref_syntax(const char *refname)
> diff --git a/sequencer.c b/sequencer.c
> index 1bef16647b4..b63bfb9a141 100644
> --- a/sequencer.c
> +++ b/sequencer.c
> @@ -2413,10 +2413,13 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts)
> res = do_reset(item->arg, item->arg_len);
> else if (item->command == TODO_BUD)
> res = do_reset("onto", 4);
> - else if (item->command == TODO_MERGE)
> + else if (item->command == TODO_MERGE) {
> res = do_merge(item->commit,
> item->arg, item->arg_len, opts);
> - else if (!is_noop(item->command))
> + if (item->commit)
> + record_in_rewritten(&item->commit->object.oid,
> + peek_command(todo_list, 1));
> + } else if (!is_noop(item->command))
> return error(_("unknown command %d"), item->command);
>
> todo_list->current++;
> @@ -3556,7 +3559,8 @@ int rearrange_squash(void)
> struct subject2item_entry *entry;
>
> next[i] = tail[i] = -1;
> - if (item->command >= TODO_EXEC) {
> + if (item->command >= TODO_EXEC &&
> + (item->command != TODO_MERGE || !item->commit)) {
> subjects[i] = NULL;
> continue;
> }
> diff --git a/t/t3430-rebase-recreate-merges.sh b/t/t3430-rebase-recreate-merges.sh
> index 46ae52f88b3..76e615bd7c1 100755
> --- a/t/t3430-rebase-recreate-merges.sh
> +++ b/t/t3430-rebase-recreate-merges.sh
> @@ -143,4 +143,43 @@ test_expect_success 'with a branch tip that was cherry-picked already' '
> EOF
> '
>
> +test_expect_success 'refs/rewritten/* is worktree-local' '
> + git worktree add wt &&
> + cat >wt/script-from-scratch <<-\EOF &&
> + label xyz
> + exec GIT_DIR=../.git git rev-parse --verify refs/rewritten/xyz >a || :
> + exec git rev-parse --verify refs/rewritten/xyz >b
> + EOF
> +
> + test_config -C wt sequence.editor \""$PWD"/replace-editor.sh\" &&
> + git -C wt rebase -i HEAD &&
> + test_must_be_empty wt/a &&
> + test_cmp_rev HEAD "$(cat wt/b)"
> +'
> +
Same for the test here, I can't figure out why this is necessary in
this patch as opposed to the patch which first introduced the
refs/rewritten/<label> refs.
> +test_expect_success 'post-rewrite hook and fixups work for merges' '
> + git checkout -b post-rewrite &&
> + test_commit same1 &&
> + git reset --hard HEAD^ &&
> + test_commit same2 &&
> + git merge -m "to fix up" same1 &&
> + echo same old same old >same2.t &&
> + test_tick &&
> + git commit --fixup HEAD same2.t &&
> + fixup="$(git rev-parse HEAD)" &&
> +
> + mkdir -p .git/hooks &&
> + test_when_finished "rm .git/hooks/post-rewrite" &&
> + echo "cat >actual" | write_script .git/hooks/post-rewrite &&
> +
> + test_tick &&
> + git rebase -i --autosquash --recreate-merges HEAD^^^ &&
> + printf "%s %s\n%s %s\n%s %s\n%s %s\n" >expect $(git rev-parse \
> + $fixup^^2 HEAD^2 \
> + $fixup^^ HEAD^ \
> + $fixup^ HEAD \
> + $fixup HEAD) &&
> + test_cmp expect actual
> +'
> +
> test_done
> --
> 2.15.1.windows.2.1430.ga56c4f9e2a9
>
>
