From: Jeff King <peff@peff.net>
Date: Mon, 25 May 2009 11:04:29 GMT
Subject: Re: [PATCH 1/2] diff: change semantics of "ignore whitespace" options
Message-ID: <20090525110429.GB27070@coredump.intra.peff.net>
In-Reply-To: <1243106690-6385-2-git-send-email-gitster@pobox.com>

On Sat, May 23, 2009 at 12:24:49PM -0700, Junio C Hamano wrote:

> When --quiet is in effect, various diff frontends optimize by breaking out
> early from the loop that enumerates the filepairs, when we find the first
> path level difference; when --ignore-whitespace* is used the above change
> automatically disables this optimization.

Both patches in this series look good to me, with one slight exception:

> +	if ((XDF_IGNORE_WHITESPACE|
> +	     XDF_IGNORE_WHITESPACE_CHANGE|
> +	     XDF_IGNORE_WHITESPACE_AT_EOL) & options->xdl_opts) {
> +		DIFF_OPT_SET(options, DIFF_FROM_CONTENTS);
> +	} else {
> +		DIFF_OPT_CLR(options, DIFF_FROM_CONTENTS);
> +	}

We have DIFF_XDL_TST these days; while it is currently equivalent to
what you do here, I thought part of the purpose was to abstract it to
make it simpler to later add master/slave magic.

-Peff