Re: git-completion with bash alias

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

On Sat, May 19, 2012 at 2:41 AM, Jeff King <peff@peff.net> wrote:
> On Fri, May 18, 2012 at 01:35:24PM +0200, Carsten Mattner wrote:
>
>> Completion works when used as "git checkout foo" but fails with
>> "bash: [: 1: unary operator expected" when trying to complete
>> via a single character shell alias like "alias g=git" as in
>> "g checkout foo".
>>
>> git version 1.7.10.2.548.g9de9681
>
> Hmm. Are you invoking the completion like:
>
>  complete -F _git g

s/_git/__git_wrap_git/

> ? That used to work, but was broken by the recent 6b179ad (completion:
> add new __git_complete helper, 2012-05-14).
>
> The "new" way seems to be:
>
>  __git_complete g _git
>
> but that function is explicitly labeled as "not public". It looks like
> there was a follow-on patch that was discussed to make a public version,
> but it got dropped.

Well, _git was probably not public either.

> I'm not sure if this regression is intentional, or if the "old" way even
> worked reliably (I seem to recall people running into issues with
> _get_comp_words_by_ref not being called properly sometimes, but I don't
> remember the details). So it's not clear to me if the right way forward
> is fixing "complete -F _git" to work again, or if that way is just
> broken, and a public version of __git_complete is the right path.
>
> Felipe, can you comment?

The problem is with certain functions (e.g. _git_fetch), which are
broken not only for aliases: try 'git --git-dir=$PWD fetch <tab>'.

Should be easy to provide backward compatibility though.

I'll send a patch soon.

-- 
Felipe Contreras