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author | Elijah Newren <newren@gmail.com> | 2021-07-22 05:04:46 +0000 |
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committer | Junio C Hamano <gitster@pobox.com> | 2021-07-22 11:54:29 -0700 |
commit | e4dc25ed49d94c93b1d3f63efe17f32ca682cab7 (patch) | |
tree | 238b7420ec798dce9d4e92c64e72a24c17811dd1 /builtin/pull.c | |
parent | pull: abort if --ff-only is given and fast-forwarding is impossible (diff) | |
download | tgif-e4dc25ed49d94c93b1d3f63efe17f32ca682cab7.tar.xz |
pull: since --ff-only overrides, handle it first
There are both merge and rebase branches in the logic, and previously
both had to handle fast-forwarding. Merge handled that implicitly
(because git merge handles it directly), while in rebase it was
explicit. Given that the --ff-only flag is meant to override any
--rebase or --no-rebase, make the code reflect that by handling
--ff-only before the merge-vs-rebase logic.
It turns out that this also fixes a bug for submodules. Previously,
when --ff-only was given, the code would run `merge --ff-only` on the
main module, and then run `submodule update --recursive --rebase` on the
submodules. With this change, we still run `merge --ff-only` on the
main module, but now run `submodule update --recursive --checkout` on
the submodules. I believe this better reflects the intent of --ff-only
to have it apply to both the main module and the submodules.
(Sidenote: It is somewhat interesting that all merges pass `--checkout`
to submodule update, even when `--no-ff` is specified, meaning that it
will only do fast-forward merges for submodules. This was discussed in
commit a6d7eb2c7a ("pull: optionally rebase submodules (remote submodule
changes only)", 2017-06-23). The same limitations apply now as then, so
we are not trying to fix this at this time.)
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/pull.c')
-rw-r--r-- | builtin/pull.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/builtin/pull.c b/builtin/pull.c index d979660482..1f45202037 100644 --- a/builtin/pull.c +++ b/builtin/pull.c @@ -1046,15 +1046,15 @@ int cmd_pull(int argc, const char **argv, const char *prefix) can_ff = get_can_ff(&orig_head, &merge_heads.oid[0]); - if (!can_ff) { - if (opt_ff) { - if (!strcmp(opt_ff, "--ff-only")) - die_ff_impossible(); - } else { - if (rebase_unspecified && opt_verbosity >= 0) - show_advice_pull_non_ff(); - } + /* ff-only takes precedence over rebase */ + if (opt_ff && !strcmp(opt_ff, "--ff-only")) { + if (!can_ff) + 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) + show_advice_pull_non_ff(); if (opt_rebase) { int ret = 0; |