Re: [PATCH] pull: abort if --ff-only is given and fast-forwarding is impossible
- From
Alex Henrie <alexhenrie24@gmail.com>
- Date
- Jul 11, 2021, 20:00 UTC
- Message-ID
- <CAMMLpeRwpxEe5qJumwXa5hyjeUBrTRDU3-1OSHDNc=UiNqN48w@mail.gmail.com>
- In-Reply-To
- <60eb259e1a75d_974bf20895@natae.notmuch>
On Sun, Jul 11, 2021 at 11:08 AM Felipe Contreras <felipe.contreras@gmail.com> wrote:
Show 34 quoted lines
>
> Alex Henrie wrote:
> > The warning about pulling without specifying how to reconcile divergent
> > branches says that after setting pull.rebase to true, --ff-only can
> > still be passed on the command line to require a fast-forward. Make that
> > actually work.
>
> I don't know where that is being said, but it's wrong: --ff-only is
> meant for merge only.
>
> > --- a/builtin/pull.c
> > +++ b/builtin/pull.c
> > @@ -1046,9 +1046,14 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
> >
> > can_ff = get_can_ff(&orig_head, &merge_heads.oid[0]);
> >
> > - if (rebase_unspecified && !opt_ff && !can_ff) {
> > - if (opt_verbosity >= 0)
> > - show_advice_pull_non_ff();
> > + if (!can_ff) {
> > + if (opt_ff) {
> > + if (!strcmp(opt_ff, "--ff-only"))
> > + die_ff_impossible();
>
> As I've mentioned multiple times already, this is wrong.
>
> The advice clearly says:
>
> You can also pass --rebase, --no-rebase, or --ff-only on the command
> line to override the configured default per invocation.
>
> With your patch now this is even less true:
>
> git -c pull.ff=only pull --rebaseI think it's an improvement over the current situation. --no-rebase does not override pull.ff=only, so it makes sense that --rebase does not override pull.ff=only either. Besides, it's generally better to abort instead of rewriting history if it's not perfectly clear that the user meant to rewrite the history.
-Alex