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pull: cleanup autostash check

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Currently "git pull --rebase" takes a shortcut in the case a
fast-forward merge is possible; run_merge() is called with --ff-only.

However, "git merge" didn't have an --autostash option, so, when "git
pull --rebase --autostash" was called *and* the fast-forward merge
shortcut was taken, then the pull failed.

This was fixed in commit f15e7cf5cc (pull: ff --rebase --autostash
works in dirty repo, 2017-06-01) by simply skipping the fast-forward
merge shortcut.

Later on "git merge" learned the --autostash option [a03b55530a
(merge: teach --autostash option, 2020-04-07)], and so did "git pull"
[d9f15d37f1 (pull: pass --autostash to merge, 2020-04-07)].

Therefore it's not necessary to skip the fast-forward merge shortcut
anymore when called with --rebase --autostash.

Let's always take the fast-forward merge shortcut by essentially
reverting f15e7cf5cc.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Felipe Contreras 2021-06-17 11:17:08 -05:00 committed by Junio C Hamano
parent 670b81a890
commit 340062243a
1 changed files with 7 additions and 9 deletions
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16
builtin/pull.c
View file

@ -947,7 +947,6 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
struct oid_array merge_heads = OID_ARRAY_INIT;
struct object_id orig_head, curr_head;
struct object_id rebase_fork_point;
int autostash;
int rebase_unspecified = 0;
int can_ff;
@ -982,8 +981,8 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
if (get_oid("HEAD", &orig_head))
oidclr(&orig_head);
autostash = config_autostash;
if (opt_rebase) {
int autostash = config_autostash;
if (opt_autostash != -1)
autostash = opt_autostash;
@ -1065,13 +1064,12 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) &&
submodule_touches_in_range(the_repository, &upstream, &curr_head))
die(_("cannot rebase with locally recorded submodule modifications"));
if (!autostash) {
if (can_ff) {
/* we can fast-forward this without invoking rebase */
opt_ff = "--ff-only";
ran_ff = 1;
ret = run_merge();
}
if (can_ff) {
/* we can fast-forward this without invoking rebase */
opt_ff = "--ff-only";
ran_ff = 1;
ret = run_merge();
}
if (!ran_ff)
ret = run_rebase(&newbase, &upstream);