Re: [PATCH for maint branch] git-completion: fix zsh support

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Hi,

On Thu, May 05, 2011 at 05:24:18PM +0300, Felipe Contreras wrote:
> It turns out 'words' is a special variable used by zsh completion.
> 
> There's probably a bug in zsh's bashcompinit:
> http://article.gmane.org/gmane.comp.shells.zsh.devel/22546
> 
> But in the meantime we can workaround it this way.

I would prefer some details about this "workaround it this way" in the
commit message (i.e. that you used "typedef -h", what it does in zsh,
and why it fixes the issue; my zsh-fu is, well, not particularly
large, so I have no idea), so when someone later runs 'git log --
contrib/completion' then he will easier understand what's going on
without the need to look at the patch.

> Currently zsh is completely broken after commit da48616 (bash: get
> --pretty=m<tab> completion to work with bash v4), which introduced
> _get_comp_words_by_ref() that comes from debian's bash_completion
> scripts, and relies on the 'words' variable to behave like any normal
> variable.
> 
> Signed-off-by: Felipe Contreras <felipe.contreras@xxxxxxxxx>
> ---
>  contrib/completion/git-completion.bash |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> This patch is meant for the maintenance branch, so Szeder's patches are not
> needed.

My first two patches are cleanups, they definitely worth
keeping, even when this patch alone would fix the zsh issues.

> diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
> index 840ae38..8d5eae7 100755
> --- a/contrib/completion/git-completion.bash
> +++ b/contrib/completion/git-completion.bash
> @@ -2710,6 +2710,9 @@ _git ()
>  	if [[ -n ${ZSH_VERSION-} ]]; then
>  		emulate -L bash
>  		setopt KSH_TYPESET
> +
> +		# 'words' has special meaning in zsh; override that
> +		typeset -h words

You have to do the same in _gitk(), too.  Although _gitk() itself
doesn't use $words, it invokes __git_has_doubledash(), which does,
hence it's still broken.

>  	fi
>  
>  	local cur words cword
> -- 
> 1.7.5.1.1.g638e6
> 
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