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builtin rebase: allow selecting the rebase "backend"

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With this commit the builtin rebase supports selecting the "rebase
backends" (or "type") `interactive`, `preserve-merges`, and `merge`.

The `state_dir` was already handled according to the rebase type in a
previous commit.

Note that there is one quirk in the shell script: `--interactive`
followed by `--merge` won't reset the type to "merge" but keeps the type
as "interactive". And as t3418 tests this explicitly, we have to support
it in the builtin rebase, too.

Likewise, `--interactive` followed by `--preserve-merges` makes it an
"explicitly interactive" rebase, i.e. a rebase that should show the todo
list, while `--preserve-merges` alone is not interactive (and t5520
tests for this via `git pull --rebase=preserve`).

Signed-off-by: Pratik Karki <predatoramigo@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Pratik Karki 2018-09-04 14:59:49 -07:00 committed by Junio C Hamano
parent 0eabf4b95c
commit 361badd393
1 changed files with 37 additions and 0 deletions
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37
builtin/rebase.c
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@ -452,6 +452,29 @@ static int can_fast_forward(struct commit *onto, struct object_id *head_oid,
return res && is_linear_history(onto, head);
}
/* -i followed by -m is still -i */
static int parse_opt_merge(const struct option *opt, const char *arg, int unset)
{
struct rebase_options *opts = opt->value;
if (!is_interactive(opts))
opts->type = REBASE_MERGE;
return 0;
}
/* -i followed by -p is still explicitly interactive, but -p alone is not */
static int parse_opt_interactive(const struct option *opt, const char *arg,
int unset)
{
struct rebase_options *opts = opt->value;
opts->type = REBASE_INTERACTIVE;
opts->flags |= REBASE_INTERACTIVE_EXPLICIT;
return 0;
}
int cmd_rebase(int argc, const char **argv, const char *prefix)
{
struct rebase_options options = {
@ -510,6 +533,17 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
OPT_CMDMODE(0, "show-current-patch", &action,
N_("show the patch file being applied or merged"),
ACTION_SHOW_CURRENT_PATCH),
{ OPTION_CALLBACK, 'm', "merge", &options, NULL,
N_("use merging strategies to rebase"),
PARSE_OPT_NOARG | PARSE_OPT_NONEG,
parse_opt_merge },
{ OPTION_CALLBACK, 'i', "interactive", &options, NULL,
N_("let the user edit the list of commits to rebase"),
PARSE_OPT_NOARG | PARSE_OPT_NONEG,
parse_opt_interactive },
OPT_SET_INT('p', "preserve-merges", &options.type,
N_("try to recreate merges instead of ignoring "
"them"), REBASE_PRESERVE_MERGES),
OPT_END(),
};
@ -884,6 +918,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
diff_flush(&opts);
}
if (is_interactive(&options))
goto run_rebase;
/* Detach HEAD and reset the tree */
if (options.flags & REBASE_NO_QUIET)
printf(_("First, rewinding head to replay your work on top of "