From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Preview: portable dumper Date: Sat, 03 Dec 2016 10:25:34 +0200 Message-ID: <8337i5mnb5.fsf@gnu.org> References: <<047a67ec-9e29-7e4e-0fb0-24c3e59b5886@dancol.org> <83zikjxt1j.fsf@gnu.org>> < <8360n6ruzu.fsf@gnu.org>> < <834m2nplmb.fsf@gnu.org> <83inr2oje6.fsf@gnu.org>> < <83shq6mlt3.fsf@gnu.org>> <> <> <2b63d48d-a678-49c2-a3a9-4f91d8d8bdb4@default> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1480753540 22844 195.159.176.226 (3 Dec 2016 08:25:40 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 3 Dec 2016 08:25:40 +0000 (UTC) Cc: emacs-devel@gnu.org, rms@gnu.org, monnier@iro.umontreal.ca To: Drew Adams Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Dec 03 09:25:36 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cD5dX-00052F-Uh for ged-emacs-devel@m.gmane.org; Sat, 03 Dec 2016 09:25:36 +0100 Original-Received: from localhost ([::1]:38219 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cD5db-0006mO-TP for ged-emacs-devel@m.gmane.org; Sat, 03 Dec 2016 03:25:39 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:57356) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cD5dV-0006m6-R6 for emacs-devel@gnu.org; Sat, 03 Dec 2016 03:25:34 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cD5dS-0003cK-LW for emacs-devel@gnu.org; Sat, 03 Dec 2016 03:25:33 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:42947) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cD5dS-0003cB-IW; Sat, 03 Dec 2016 03:25:30 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3225 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1cD5dK-0003G9-9b; Sat, 03 Dec 2016 03:25:22 -0500 In-reply-to: <2b63d48d-a678-49c2-a3a9-4f91d8d8bdb4@default> (message from Drew Adams on Fri, 2 Dec 2016 16:07:24 -0800 (PST)) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:209973 Archived-At: > Date: Fri, 2 Dec 2016 16:07:24 -0800 (PST) > From: Drew Adams > Cc: eliz@gnu.org, emacs-devel@gnu.org > > > Only rarely have we made changes that would prevent this. > > That used to be the case. Now, nearly every major release is > incompatible, AFAICT. As far as I can see, long gone are the > days when you could byte-compile in an older version and use > the byte-compiled code in a newer version. I'm not aware of such problems. AFAIK, we only made an incompatible change once, in Emacs 23. The byte-compiled files compiled by later versions should all be compatible. If you see a problem with that, please report it as a bug.