From: Junio C Hamano <gitster@pobox.com>
Date: Fri, 16 Oct 2020 20:02:16 GMT
Subject: Re: [PATCH v3 1/3] test-lib: allow selecting tests by substring/glob with --run
Message-ID: <xmqqd01iaqif.fsf@gitster.c.googlers.com>
In-Reply-To: <CABPp-BHkykWh8L_FYhLR1BCCpPDmc_2q+Tccg_yZ7W8ZHZ4WsA@mail.gmail.com>

Elijah Newren <newren@gmail.com> writes:

> Given that t/README explicitly shows examples of space-separated lists
> of numbers, I'm worried we're breaking long-built expectations of
> other developers by changing IFS here.  Perhaps I could instead add
> the following paragraph to t/README:

Unlike something that would affect end-users, I think it is OK to
break backward compatibility one-way.  If you suddenly forbid spaces
and force our developers to use comma and nothing else, in muscle
memory of their fingers and/or in their scripts, in a version merged
to 'master', as long as their new habit and updated scripts use
comma consistently, they work fine on 'maint', right?

If there is no such "works on both sides of the flag day" choice, it
is a different story, of course, but comma should work fine for us
in this case.

Thanks.