From: Shawn O. Pearce <spearce@spearce.org>
Date: Mon, 19 Feb 2007 20:12:49 GMT
Subject: Re: [PATCH] Change "refs/" references to symbolic constants
Message-ID: <20070219201249.GC27565@spearce.org>
In-Reply-To: <7vlkit7vy5.fsf@assigned-by-dhcp.cox.net>

Junio C Hamano <junkio@cox.net> wrote:
> > diff --git a/builtin-pack-refs.c b/builtin-pack-refs.c
> > index 3de9b3e..ac7543d 100644
> > --- a/builtin-pack-refs.c
> > +++ b/builtin-pack-refs.c
> > @@ -36,7 +36,7 @@ static int handle_one_ref(const char *path, const unsigned char *sha1,
> >  	/* Do not pack the symbolic refs */
> >  	if ((flags & REF_ISSYMREF))
> >  		return 0;
> > -	is_tag_ref = !strncmp(path, "refs/tags/", 10);
> > +	is_tag_ref = !strncmp(path, PATH_REFS_TAGS, STRLEN_PATH_REFS_TAGS);
> 
> These repeated strncmp(p, X, STRLEN_X) almost makes me wonder if we
> want to introduce:
> 
> 	inline int prefixcmp(a, b)
>         {
>         	return (strncmp(a, b, strlen(b));
>         }
> 
> with clever preprocessor optimization to have compiler do strlen()
> when b is a string literal.

This may be worthwhile.  We use strncmp so often in Git that I
tend to write strncmp even when I mean strcmp.  Yes, my fingers are
trained to write strncmp, and only strncmp...  *sigh* At least the
compiler checks for me.  ;-)

-- 
Shawn.