Subject: Re: [PATCH v2] stash: prefer --quiet over shell redirection

From: David Aguilar <[email-masked]>
Date: Sat, 13 Sep 2014 14:57:59 -0700

On Fri, Sep 12, 2014 at 12:05:48PM -0700, Junio C Hamano wrote:
> David Aguilar <[email-masked]> writes:
> 
> > Use `git rev-parse --verify --quiet` instead of redirecting
> > stderr to /dev/null.
> >
> > Signed-off-by: David Aguilar <[email-masked]>
> > ---
> 
> Has this patch ever been tested?  t3903 seems to break with this at
> least for me.

Oops, I thought I did but it's definitely failing in pu.

The root cause is that "git rev-parse --verify --quiet" is not
actually quiet.

I'll send a patch to fix this shortly.

It touches the ref machinery, which I know Ronnie has been improving,
so I hope this doesn't cause any conflicts with other in-flight topics.

> >  git-stash.sh | 13 +++++++------
> >  1 file changed, 7 insertions(+), 6 deletions(-)
> >
> > diff --git a/git-stash.sh b/git-stash.sh
> > index bcc757b..2ff8b94 100755
> > --- a/git-stash.sh
> > +++ b/git-stash.sh
> > @@ -50,7 +50,7 @@ clear_stash () {
> >  	then
> >  		die "$(gettext "git stash clear with parameters is unimplemented")"
> >  	fi
> > -	if current=$(git rev-parse --verify $ref_stash 2>/dev/null)
> > +	if current=$(git rev-parse --verify --quiet $ref_stash)
> >  	then
> >  		git update-ref -d $ref_stash $current
> >  	fi
> > @@ -292,7 +292,7 @@ save_stash () {
> >  }
> >  
> >  have_stash () {
> > -	git rev-parse --verify $ref_stash >/dev/null 2>&1
> > +	git rev-parse --verify --quiet $ref_stash >/dev/null
> >  }
> >  
> >  list_stash () {
> > @@ -392,12 +392,12 @@ parse_flags_and_rev()
> >  		;;
> >  	esac
> >  
> > -	REV=$(git rev-parse --quiet --symbolic --verify "$1" 2>/dev/null) || {
> > +	REV=$(git rev-parse --symbolic --verify --quiet "$1") || {
> >  		reference="$1"
> >  		die "$(eval_gettext "\$reference is not valid reference")"
> >  	}
> >  
> > -	i_commit=$(git rev-parse --quiet --verify "$REV^2" 2>/dev/null) &&
> > +	i_commit=$(git rev-parse --verify --quiet "$REV^2") &&
> >  	set -- $(git rev-parse "$REV" "$REV^1" "$REV:" "$REV^1:" "$REV^2:" 2>/dev/null) &&
> >  	s=$1 &&
> >  	w_commit=$1 &&
> > @@ -409,7 +409,7 @@ parse_flags_and_rev()
> >  	test "$ref_stash" = "$(git rev-parse --symbolic-full-name "${REV%@*}")" &&
> >  	IS_STASH_REF=t
> >  
> > -	u_commit=$(git rev-parse --quiet --verify "$REV^3" 2>/dev/null) &&
> > +	u_commit=$(git rev-parse --verify --quiet "$REV^3") &&
> >  	u_tree=$(git rev-parse "$REV^3:" 2>/dev/null)
> >  }
> >  
> > @@ -531,7 +531,8 @@ drop_stash () {
> >  		die "$(eval_gettext "\${REV}: Could not drop stash entry")"
> >  
> >  	# clear_stash if we just dropped the last stash entry
> > -	git rev-parse --verify "$ref_stash@{0}" >/dev/null 2>&1 || clear_stash
> > +	git rev-parse --verify --quiet "$ref_stash@{0}" >/dev/null ||
> > +	clear_stash
> >  }
> >  
> >  apply_to_branch () {

-- 
David