Re: [PATCH 13/14] completion: add default options

[Felipe Contreras <felipe.contreras@gmail.com>]

On Fri, Jun 21, 2019 at 10:02 PM Duy Nguyen <pclouds@gmail.com> wrote:
>
> On Sat, Jun 22, 2019 at 5:31 AM Felipe Contreras
> <felipe.contreras@gmail.com> wrote:
> >
> > Versions of Git older than v2.17 don't know about
> > --git-completion-helper, so provide some defaults for them.
> >
> > Also, some commands fail if there's no Git repository available.
> >
> > Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
> > ---
> >  contrib/completion/git-completion.bash | 97 +++++++++++++++++++++++++-
> >  t/t9902-completion.sh                  |  4 +-
> >  2 files changed, 98 insertions(+), 3 deletions(-)
> >
> > diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
> > index d3ee6c7dc2..922ba5f925 100644
> > --- a/contrib/completion/git-completion.bash
> > +++ b/contrib/completion/git-completion.bash
> > @@ -377,6 +377,100 @@ else
> >         unset $(compgen -v __gitcomp_builtin_)
> >  fi
> >
> > +__gitcomp_builtin_add_default=" --dry-run --verbose --interactive --patch --edit --force --update --renormalize --intent-to-add --all --ignore-
> removal --refresh --ignore-errors --ignore-missing --chmod=
> --no-dry-run -- --no-verbose --no-interactive --no-patch --no-edit
> --no-force --no-update --no-renormalize --no-intent-to-add --no-all
> --no-ignore-removal --no-refresh --no-ignore-errors
> --no-ignore-missing --no-chmod"
>
> And who's going to keep these uptodate?

The same people that kept them up-to-date before git-completion-helper.

> If you do this, might as well delete --git-completion-helper

They serve two different purposes. Say you install the completion of
Git v2.22, but a while later you have Git v2.25; you will get the
updated commands thanks to git-completion-helper, and all the
__gitcomp_builtin_*_default will be ignored.

Granted; that's not the typical situation, as many people get the Git
completion through their distribution in tandem with their Git
version. But remember that these completion scripts are part of
contrib; they are not part of official Git (`make install` doesn't
install them).

When a) most people have a version of git that has
git-completion-helper, and b) most of the issues running commands
outside of a Git repo are resolved, they could be removed. But right
now they do serve a purpose.

> A more acceptable option might be regenerate git-completion.bash and
> run --git-completion-helper to generate these, or make
> git-completion.bash source a generated file. But that might need some
> more build infrastructure, and people who just one to copy the file
> might not like it.

Indeed, I wrote a script to generate these, but I manually copied
them. I could write a script that automatically generates this file if
it's agreed that this is indeed the way we want to go.

But even if these were not up-to-date--as historically has been the
case for most options--and a) you are running a version of Git that
doesn't have git-completion-helper, or b) you run a command that
requires a Git repo; it's better to get outdated options than to get
*nothing*, which is what we get now.

Cheers.

-- 
Felipe Contreras