From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.bugs Subject: bug#26635: =?UTF-8?Q?=E5=9B=9E=E5=A4=8D=EF=BC=9A?= bug#26635: 25.1; elisp docs bug Date: Mon, 24 Apr 2017 12:50:20 +0200 Message-ID: <87h91edqqb.fsf@linux-m68k.org> References: <87shkydt3b.fsf@linux-m68k.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1493031083 18157 195.159.176.226 (24 Apr 2017 10:51:23 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 24 Apr 2017 10:51:23 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) Cc: 26635 <26635-done@debbugs.gnu.org> To: "zhangjg" Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Apr 24 12:51:17 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1d2baK-0004TT-Rn for geb-bug-gnu-emacs@m.gmane.org; Mon, 24 Apr 2017 12:51:12 +0200 Original-Received: from localhost ([::1]:43220 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d2baQ-0002NQ-Ms for geb-bug-gnu-emacs@m.gmane.org; Mon, 24 Apr 2017 06:51:18 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51088) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d2baF-0002La-6j for bug-gnu-emacs@gnu.org; Mon, 24 Apr 2017 06:51:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d2baA-00050D-9h for bug-gnu-emacs@gnu.org; Mon, 24 Apr 2017 06:51:07 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:38966) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1d2baA-000500-4p for bug-gnu-emacs@gnu.org; Mon, 24 Apr 2017 06:51:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1d2ba9-00089z-Ro for bug-gnu-emacs@gnu.org; Mon, 24 Apr 2017 06:51:01 -0400 Resent-From: Andreas Schwab Original-Sender: "Debbugs-submit" Resent-To: bug-gnu-emacs@gnu.org Resent-Date: Mon, 24 Apr 2017 10:51:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: cc-closed 26635 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Mail-Followup-To: 26635@debbugs.gnu.org, schwab@linux-m68k.org, jinguozhang@qq.com Original-Received: via spool by 26635-done@debbugs.gnu.org id=D26635.149303102831321 (code D ref 26635); Mon, 24 Apr 2017 10:51:01 +0000 Original-Received: (at 26635-done) by debbugs.gnu.org; 24 Apr 2017 10:50:28 +0000 Original-Received: from localhost ([127.0.0.1]:37165 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1d2bZb-000897-NZ for submit@debbugs.gnu.org; Mon, 24 Apr 2017 06:50:27 -0400 Original-Received: from mail-out.m-online.net ([212.18.0.9]:56873) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1d2bZa-000890-NM for 26635-done@debbugs.gnu.org; Mon, 24 Apr 2017 06:50:27 -0400 Original-Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 3wBNR55Gcvz1r55b; Mon, 24 Apr 2017 12:50:25 +0200 (CEST) Original-Received: from localhost (dynscan01.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 3wBNR539PLz3jgY4; Mon, 24 Apr 2017 12:50:25 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan01.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id Z8ctXR5winws; Mon, 24 Apr 2017 12:50:22 +0200 (CEST) X-Auth-Info: lj83khUnAWyvUxCNQEwjGCTvzCM/aMLEllHUf01MMRCoeGY+DnMxVjApRgf8kvYh Original-Received: from igel.home (ppp-88-217-7-231.dynamic.mnet-online.de [88.217.7.231]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Mon, 24 Apr 2017 12:50:22 +0200 (CEST) Original-Received: by igel.home (Postfix, from userid 1000) id 52ADA2C4297; Mon, 24 Apr 2017 12:50:20 +0200 (CEST) X-Yow: Catsup and Mustard all over the place! It's the Human Hamburger! In-Reply-To: (zhangjg's message of "Mon, 24 Apr 2017 18:31:17 +0800") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:131932 Archived-At: On Apr 24 2017, "zhangjg" wrote: > Like the fellow code: > > (= 1 1 t) ; error > (= 1 2 t) ; nil > > t is a symbol, (= 1 1 t) signal a error, that is what we expect. > But in the second form there is no error, because "=" get the > result before to eval the third argument "t". All arguments are evaluated, by the caller. Try (= 1 2 (foo)), for example. > So "=" not to eval all arguments, that is a "sepecial form" activation. It may _ignore_ some of its arguments, but that's not what `special form' is about. Any function is free to ignore arguments. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."