From: Junio C Hamano <gitster@pobox.com>
Date: Sun, 28 May 2017 01:18:31 GMT
Subject: Re: [RFC/PATCH] WIP: add deprecation & experimental process/interface
Message-ID: <xmqqy3thaie0.fsf@gitster.mtv.corp.google.com>
In-Reply-To: <20170527111032.30897-1-avarab@gmail.com>

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

> The plan, subject to RFC feedback is to:
>
>  * Add a new config variable `core.version`. E.g. `core.version =
>    2.14.0` With this the user can specify that they'd like
>    new/experimental features introduced in that version (and below),
>    as well as immediately getting new deprecations added in that
>    version as errors.
>
>    This is similar to perl's "use v<VERSION>".

As long as this does not require very new version like v3.0.0 of Git
to pretend as if the user is still running an ancient v2.14.0, it is
a sensible proposal, I would think.

>  * Add a deprecated() function to to mark deprecated features.
>  * TODO: Add an experimental() function to mark experimental features.

Having burned by bitter experience during v1.6.0 transition, I do
welcome an attempt to make it easier to communicate deprecation
plans to end-users.