Re: [PATCH v2 4/4] completion: be nicer with zsh

From: Jonathan Nieder <jrnieder@gmail.com>
Date: Jan 30, 2012, 17:53 UTC
Message-ID: <20120130175324.GH10618@burratino>
In-Reply-To: <1327944197-6379-5-git-send-email-felipec@infradead.org>

Felipe Contreras wrote:

Show 9 quoted lines

> --- a/contrib/completion/git-completion.bash
> +++ b/contrib/completion/git-completion.bash
> @@ -657,7 +657,8 @@ __git_merge_strategies=
>  # is needed.
>  __git_compute_merge_strategies ()
>  {
> -	: ${__git_merge_strategies:=$(__git_list_merge_strategies)}
> +	test "$__git_merge_strategies" && return
> +	__git_merge_strategies=$(__git_list_merge_strategies 2> /dev/null)

Why the new redirect? If I add debugging output to __git_list_merge_strategies that writes to stderr, I want to see it.

Why the 'test "$foo"' form instead of [[ -n which is more common in this completion script? Why use "return" instead of

	[[ -n $var ]] || var=$(...)

which feels a little simpler?