From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: If records are not sequences, why does aref work on records? Date: Fri, 07 Apr 2017 15:13:37 -0400 Message-ID: References: <86pogo4vty.fsf@molnjunk.nocrew.org> <8360igof0k.fsf@gnu.org> <867f2w4qdk.fsf@molnjunk.nocrew.org> <0e6a0a16-8133-b2bc-404a-d0016f0c655e@cs.ucla.edu> <86h9202knq.fsf@molnjunk.nocrew.org> <4f2a1d4c-8703-4f07-a721-ea28c348631d@default> <864ly02i1m.fsf@molnjunk.nocrew.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1491592475 28304 195.159.176.226 (7 Apr 2017 19:14:35 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 7 Apr 2017 19:14:35 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Apr 07 21:14:31 2017 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 1cwZKz-0006R0-55 for ged-emacs-devel@m.gmane.org; Fri, 07 Apr 2017 21:14:25 +0200 Original-Received: from localhost ([::1]:52285 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cwZL5-0002xZ-2Z for ged-emacs-devel@m.gmane.org; Fri, 07 Apr 2017 15:14:31 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56536) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cwZKZ-0002x9-Ep for emacs-devel@gnu.org; Fri, 07 Apr 2017 15:14:00 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cwZKU-0003gl-EO for emacs-devel@gnu.org; Fri, 07 Apr 2017 15:13:59 -0400 Original-Received: from [195.159.176.226] (port=53750 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cwZKU-0003gg-7V for emacs-devel@gnu.org; Fri, 07 Apr 2017 15:13:54 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1cwZKD-0001Fh-1B for emacs-devel@gnu.org; Fri, 07 Apr 2017 21:13:37 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 10 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:94BNRx0fSKDgjvT4Jn21tPx2aDo= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 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:213775 Archived-At: > If we decide to support aref or copy-sequence on records for > efficiency or backwards compatibility that doesn't mean we want them > to be full sequences. FWIW, I agree. I think we do need aref and copy-sequence to work on them, for backward compatibility reasons, but `sequencep` should return nil. Stefan