undef/git-commit-vandalism
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Merge branch 'ev/pull-already-up-to-date-is-noop' into maint

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"git pull" with any strategy when the other side is behind us
should succeed as it is a no-op, but doesn't.

* ev/pull-already-up-to-date-is-noop:
  pull: should be noop when already-up-to-date
This commit is contained in:
Junio C Hamano 2021-11-23 14:48:04 -08:00
commit ad03180c5c
2 changed files with 10 additions and 2 deletions
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6
builtin/pull.c
View File

@ -988,6 +988,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
struct object_id rebase_fork_point;
int rebase_unspecified = 0;
int can_ff;
int divergent;
if (!getenv("GIT_REFLOG_ACTION"))
set_reflog_message(argc, argv);
@ -1102,15 +1103,16 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
}
can_ff = get_can_ff(&orig_head, &merge_heads);
divergent = !can_ff && !already_up_to_date(&orig_head, &merge_heads);
/* ff-only takes precedence over rebase */
if (opt_ff && !strcmp(opt_ff, "--ff-only")) {
if (!can_ff && !already_up_to_date(&orig_head, &merge_heads))
if (divergent)
die_ff_impossible();
opt_rebase = REBASE_FALSE;
}
/* If no action specified and we can't fast forward, then warn. */
if (!opt_ff && rebase_unspecified && !can_ff) {
if (!opt_ff && rebase_unspecified && divergent) {
show_advice_pull_non_ff();
die(_("Need to specify how to reconcile divergent branches."));
}

6
t/t7601-merge-pull-config.sh
View File

@ -387,6 +387,12 @@ test_expect_success 'pull prevents non-fast-forward with "only" in pull.ff' '
test_must_fail git pull . c3
'
test_expect_success 'already-up-to-date pull succeeds with unspecified pull.ff' '
git reset --hard c1 &&
git pull . c0 &&
test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
'
test_expect_success 'already-up-to-date pull succeeds with "only" in pull.ff' '
git reset --hard c1 &&
test_config pull.ff only &&