Re: [PATCH] worktree: teach `add` to accept --reason <string> with --lock

[Eric Sunshine <sunshine@sunshineco.com>]

On Tue, Jul 6, 2021 at 3:42 PM Junio C Hamano <gitster@pobox.com> wrote:
> Eric Sunshine <sunshine@sunshineco.com> writes:
> >>  --reason <string>::
> >> +       With `lock` or with `add --lock`, an explanation why the working tree is locked.
> >
> > I realize that you're mimicking the interface of `git worktree lock`
> > which accepts an optional `--reason`, but I'm wondering if the
> > user-experience might be improved by instead allowing `--lock` to
> > accept the reason as an optional argument. For instance:
> >
> >     git worktree add --lock='just because' ...
>
> Thanks for thinking aloud, but I'd prefer the interface as posted,
> simply because there is one less thing for users to remember.  The
> justification to lock is given with the --reason=<why> argument no
> matter how you acquire the lock on a worktree.

My one bit of pushback is that, although the meaning of `--reason` is
plenty clear in the context of `git worktree lock`, it may become
ambiguous in the context of `git worktree add` if worktrees ever grow
additional attributes/features which are also accompanied by
"reasons". That possibility suggests that this particular
reason-giving option of `git worktree add` ought to be named
`--lock-reason`, but `git worktree add --lock --lock-reason=<reason>`
feels clunky and redundant, which is why I was wondering if `git
worktree --lock[=<reason>]` would be a better (and more convenient)
UI.

I'm questioning the UI choice now so we can avoid backpedalling later
on, if it ever comes to that, but perhaps my concern is unfounded.
(Indeed, I haven't been able to come up with cases which would make
`--reason` ambiguous.)