From: Nguyen Thai Ngoc Duy <pclouds@gmail.com>
Date: Mon, 15 Oct 2012 04:09:26 GMT
Subject: Re: [PATCH] exclude: fix a bug in prefix comparison optimization
Message-ID: <CACsJy8DEqkPob+KjFS_Y3BraS40CSP7snS3aB41hg0Ng0DuJDg@mail.gmail.com>
In-Reply-To: <7v8vb9yn09.fsf@alter.siamese.dyndns.org>

On Mon, Oct 15, 2012 at 12:36 AM, Junio C Hamano <gitster@pobox.com> wrote:
> With your "teach attr.c match the same optimization as dir.c"
> series, you would need something like this
>
> diff --git i/attr.c w/attr.c
> index 6d39406..528e935 100644
> --- i/attr.c
> +++ w/attr.c
> @@ -710,7 +710,7 @@ static int path_matches(const char *pathname, int pathlen,
>          * if the non-wildcard part is longer than the remaining
>          * pathname, surely it cannot match.
>          */
> -       if (!namelen || prefix > namelen)
> +       if (prefix > namelen)
>                 return 0;
>         if (baselen != 0)
>                 baselen++;

If there's still a chance to rewrite attr-match-optim-more series (I
see it's in next now), then I could reorder the patches so that
excluded_from_list code refactoring goes first, then rewrite "teach
attr.c match... as dir.c" patch makes use of the new functions without
code duplication. The end result would be the same, except that we
won't see this bug in attr.c's history. Not much value so if it may
take a lot of your time, don't bother.
--
Duy