From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 05 Mar 2018 22:09:51 GMT
Subject: Re: [PATCH 2/2] add--interactive: detect bogus diffFilter output
Message-ID: <xmqqbmg2898w.fsf@gitster-ct.c.googlers.com>
In-Reply-To: <878tb6nr6u.fsf@evledraar.gmail.com>

Ævar Arnfjörð Bjarmason <avarab@gmail.com> writes:

> On Sat, Mar 03 2018, Jeff King jotted:
>
>> +	if (@colored && @colored != @diff) {
>
> nit: should just be:
>
>     if (@colored != @diff) {
>
> It's not possible for @arrays in scalar context to be undefined.

It is true that @array can not be undef, but your rewrite I think is
wrong.

The first "do the comparison only @colored is true" is not about
definedness.  It is "@colored can be an empty array when the user is
not using separate 'show these colored lines to the end user, feed
these noncolored lines to git-apply command' feature, so @colored==0
and @diff > 0 is perfectly fine".