From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Marcin Borkowski Newsgroups: gmane.emacs.help Subject: Re: alist-get in Emacs 24? Date: Fri, 02 Oct 2015 10:49:35 +0200 Message-ID: <87pp0xu02o.fsf@mbork.pl> References: <871tddvl08.fsf@mbork.pl> <877fn5hgg8.fsf@web.de> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1443778854 19520 80.91.229.3 (2 Oct 2015 09:40:54 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 2 Oct 2015 09:40:54 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Oct 02 11:40:47 2015 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZhwpZ-0008Fv-PV for geh-help-gnu-emacs@m.gmane.org; Fri, 02 Oct 2015 11:40:45 +0200 Original-Received: from localhost ([::1]:58340 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZhwpY-0005I4-Ot for geh-help-gnu-emacs@m.gmane.org; Fri, 02 Oct 2015 05:40:44 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54772) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zhw2O-0005gv-ON for help-gnu-emacs@gnu.org; Fri, 02 Oct 2015 04:49:57 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zhw2L-0001Cm-GJ for help-gnu-emacs@gnu.org; Fri, 02 Oct 2015 04:49:56 -0400 Original-Received: from mail.mojserwer.eu ([2a01:5e00:2:52::8]:38581) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zhw2L-0001CZ-9D for help-gnu-emacs@gnu.org; Fri, 02 Oct 2015 04:49:53 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by mail.mojserwer.eu (Postfix) with ESMTP id DE8DD6F2005 for ; Fri, 2 Oct 2015 10:49:48 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at mail.mojserwer.eu Original-Received: from mail.mojserwer.eu ([127.0.0.1]) by localhost (mail.mojserwer.eu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id saY+LZ-J8fIw for ; Fri, 2 Oct 2015 10:49:46 +0200 (CEST) Original-Received: from localhost (103-115.echostar.pl [213.156.103.115]) by mail.mojserwer.eu (Postfix) with ESMTPSA id AAAF66F2003 for ; Fri, 2 Oct 2015 10:49:46 +0200 (CEST) In-reply-to: <877fn5hgg8.fsf@web.de> X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2a01:5e00:2:52::8 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:107463 Archived-At: On 2015-10-02, at 09:34, Michael Heerdegen wrote: > Marcin Borkowski writes: > >> I will probably just write functions like set-alist-element and >> inc-alist-element (or maybe I'll name them better) so that the library >> works in Emacs 24, but is there a better way? > > There was assoc.el in prior Emacsen (and it's still lying around in > lisp/obsolete). `aput' is its setter for alists. Works great, but is > obsolete. Thanks. > A different approach is to use `assoc', `delq' and `push', i.e., do it > by hand. And this might be the way to go for me. >> Also, what would be the recommended policy for supporting older Emacsen? >> Is it enough to test my packages against 24.1 (which didn't compile on >> my machine anyway, btw)? Should I care for Emacs 23 at all? > > That's your choice. There are lots of third party packages that only > support the current minor release and maybe some before that. Others > support much older releases. 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? 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. > Support of old releases is nice for people that have to use the Emacs > version they find at their computer at work. In your case, if you don't > even know those older releases much, I would not care too much about it. I know quite a lot about those releases - I started with Emacs v19 or so. It's that I know about them only from the user perspective; I started serious Elisp hacking about v23. Also, assuming everyone else also is on the bleeding edge and compiles from source is not a brilliant idea, I admit. > Michael. Thanks again, -- Marcin Borkowski http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski Faculty of Mathematics and Computer Science Adam Mickiewicz University