From: Michael Heerdegen <michael_heerdegen@web.de>
To: help-gnu-emacs@gnu.org
Subject: Re: alist-get in Emacs 24?
Date: Sat, 03 Oct 2015 05:05:35 +0200 [thread overview]
Message-ID: <878u7k7itc.fsf@web.de> (raw)
In-Reply-To: 87pp0xu02o.fsf@mbork.pl
Marcin Borkowski <mbork@mbork.pl> writes:
> Of course. What I was asking was more or less "what is the percentage
> of Emacs users who are on 23, 24... etc.". Are there any estimates?
Good question.
> Also, are there any good practices/guidelines as to how to indicate in
> the code that some of its parts are meant for legacy Emacsen? So that
> I can e.g. remove them 3 years from now without having to study all the
> code, for example.
Most people that want to support older Emacs versions do it like this
in their code:
(if (test-if-a-certain-feature-is-implemented)
;; Emacs >= 25.1
(code for newer Emacs versions ...)
;; Emacs < 25
(code for older Emacs versions))
Regards,
Michael.
next prev parent reply other threads:[~2015-10-03 3:05 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-02 6:32 alist-get in Emacs 24? Marcin Borkowski
2015-10-02 6:39 ` Dmitry Gutov
2015-10-02 6:54 ` Marcin Borkowski
2015-10-02 7:34 ` Michael Heerdegen
2015-10-02 8:49 ` Marcin Borkowski
2015-10-03 3:05 ` Michael Heerdegen [this message]
2015-10-02 13:37 ` Stefan Monnier
2015-10-07 19:15 ` Marcin Borkowski
2015-10-07 20:45 ` Drew Adams
2015-10-08 8:21 ` Michael Heerdegen
2015-10-08 15:53 ` Drew Adams
2015-10-08 16:14 ` Michael Heerdegen
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