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: Predicate for true lists Date: Sat, 07 Jul 2018 13:04:07 +0300 Message-ID: <837em7jrag.fsf@gnu.org> References: <87fu3vdjjk.fsf@tcd.ie> <87bmcqhhsf.fsf@tcd.ie> <87in6xgtpb.fsf@tcd.ie> <2af892df-26cb-60b2-4fd8-067fcb3d32e9@cs.ucla.edu> <87r2kh9uwx.fsf@tcd.ie> <83h8lcnbxb.fsf@gnu.org> <6fc589d1-2c21-3e9b-be47-b7700f61642d@cs.ucla.edu> <831scflefs.fsf@gnu.org> <5d0d79d3-6291-fbf0-1028-064f86787483@cs.ucla.edu> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1530957728 23857 195.159.176.226 (7 Jul 2018 10:02:08 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 7 Jul 2018 10:02:08 +0000 (UTC) Cc: contovob@tcd.ie, emacs-devel@gnu.org To: Paul Eggert Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Jul 07 12:02:04 2018 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 1fbk2V-00063P-5S for ged-emacs-devel@m.gmane.org; Sat, 07 Jul 2018 12:02:03 +0200 Original-Received: from localhost ([::1]:32993 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fbk4c-0007DX-DC for ged-emacs-devel@m.gmane.org; Sat, 07 Jul 2018 06:04:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35517) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fbk4V-0007BI-MV for emacs-devel@gnu.org; Sat, 07 Jul 2018 06:04:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fbk4S-0007Fq-JS for emacs-devel@gnu.org; Sat, 07 Jul 2018 06:04:07 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:50927) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fbk4S-0007Fm-Fs; Sat, 07 Jul 2018 06:04:04 -0400 Original-Received: from [176.228.60.248] (port=3451 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1fbk4R-0007Si-40; Sat, 07 Jul 2018 06:04:03 -0400 In-reply-to: <5d0d79d3-6291-fbf0-1028-064f86787483@cs.ucla.edu> (message from Paul Eggert on Sat, 7 Jul 2018 01:41:38 -0700) 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:227046 Archived-At: > Cc: contovob@tcd.ie, emacs-devel@gnu.org > From: Paul Eggert > Date: Sat, 7 Jul 2018 01:41:38 -0700 > > Eli Zaretskii wrote: > > the documentation still doesn't say that 'length' signals > > an error for anything that is not a sequence, which is what > > proper-list-p is relying on. > > The proposed implementation of proper-list-p does not rely on such a signal, That's not my reading of the implementation: (and (listp object) (ignore-errors (length object))) ^^^^^^^^^^^^^