From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 15 Mar 2010 23:17:50 GMT
Subject: Re: [PATCH 1/1] Improve error messages from 'git stash show'
Message-ID: <7vbpepb2e9.fsf@alter.siamese.dyndns.org>
In-Reply-To: <1268691590-27100-1-git-send-email-hendeby@isy.liu.se>

Gustaf Hendeby <hendeby@isy.liu.se> writes:

> The previous error message "fatal: Needed a single revision" is not
> very informative.
>
> Signed-off-by: Gustaf Hendeby <hendeby@isy.liu.se>
> ---
>  git-stash.sh |    8 ++++++--
>  1 files changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/git-stash.sh b/git-stash.sh
> index aa47e54..cf221c6 100755
> --- a/git-stash.sh
> +++ b/git-stash.sh
> @@ -210,14 +210,18 @@ list_stash () {
>  }
>  
>  show_stash () {
> +	have_stash || die 'No stash found'
> +
>  	flags=$(git rev-parse --no-revs --flags "$@")
>  	if test -z "$flags"
>  	then
>  		flags=--stat
>  	fi
>  
> -	w_commit=$(git rev-parse --verify --default $ref_stash "$@") &&
> -	b_commit=$(git rev-parse --verify "$w_commit^") &&
> +	w_commit=$(git rev-parse --quiet --verify --default $ref_stash "$@") &&
> +	b_commit=$(git rev-parse --quiet --verify "$w_commit^") ||
> +		die 'Stash not found'
> +

Because you checked have_stash upfront, an error detected here cannot be
"stash not found".  It is something else, isn't it?

>  	git diff $flags $b_commit $w_commit
>  }
>  
> -- 
> 1.7.0.2.274.gc376e.dirty