From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Chong Yidong Newsgroups: gmane.emacs.bugs Subject: bug#7146: (make-symbol "") issues Date: Thu, 21 Jul 2011 15:25:32 -0400 Message-ID: <87aac7tp03.fsf@stupidchicken.com> References: <4CA6B2BE.7070705@gmail.com> <4CA7D1E3.90800@gmail.com> <87k4m0giy4.fsf@stupidchicken.com> <4CA7FC00.5080905@gmail.com> <87fwwn3opr.fsf@stupidchicken.com> <87bp7bfu3c.fsf@gnu.org> <87iq1jfhre.fsf@stupidchicken.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1311276372 28446 80.91.229.12 (21 Jul 2011 19:26:12 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 21 Jul 2011 19:26:12 +0000 (UTC) Cc: 7146@debbugs.gnu.org, Frank , Lars Magne Ingebrigtsen , Andreas Schwab To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Jul 21 21:26:07 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Qjyso-0005Nd-Qe for geb-bug-gnu-emacs@m.gmane.org; Thu, 21 Jul 2011 21:26:07 +0200 Original-Received: from localhost ([::1]:37950 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qjyso-0003Tx-Bh for geb-bug-gnu-emacs@m.gmane.org; Thu, 21 Jul 2011 15:26:06 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:47705) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qjysl-0003Th-7e for bug-gnu-emacs@gnu.org; Thu, 21 Jul 2011 15:26:03 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Qjysk-0003Lk-3K for bug-gnu-emacs@gnu.org; Thu, 21 Jul 2011 15:26:03 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:56908) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qjysj-0003Lg-T7 for bug-gnu-emacs@gnu.org; Thu, 21 Jul 2011 15:26:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1Qjysj-0008VP-Kv; Thu, 21 Jul 2011 15:26:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Chong Yidong Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-To: owner@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 21 Jul 2011 19:26:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 7146 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 7146-submit@debbugs.gnu.org id=B7146.131127634232666 (code B ref 7146); Thu, 21 Jul 2011 19:26:01 +0000 Original-Received: (at 7146) by debbugs.gnu.org; 21 Jul 2011 19:25:42 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1QjysP-0008Up-Kx for submit@debbugs.gnu.org; Thu, 21 Jul 2011 15:25:41 -0400 Original-Received: from vm-emlprdomr-03.its.yale.edu ([130.132.50.144]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1QjysN-0008Ud-Nw for 7146@debbugs.gnu.org; Thu, 21 Jul 2011 15:25:40 -0400 Original-Received: from furball ([128.36.225.144]) (authenticated bits=0) by vm-emlprdomr-03.its.yale.edu (8.14.4/8.14.4) with ESMTP id p6LJPWn9028474 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Thu, 21 Jul 2011 15:25:33 -0400 In-Reply-To: (Stefan Monnier's message of "Mon, 18 Jul 2011 11:30:35 -0400") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) X-Scanned-By: MIMEDefang 2.71 on 130.132.50.144 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Thu, 21 Jul 2011 15:26:01 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:49530 Archived-At: Stefan Monnier writes: >>> CommonLisp has a |....| syntax >> I don't think it is a good idea to add a new special character, so ## >> would still be my choice. > > Another approach is to follow the same idea as with "#:" ("#: is > immediately followed by so if it's followed by something that's > not appropriate it means is empty"). > I.e. "#N=" could be used for the empty interned symbol. This is inconvenient to implement with the current print_object code, and anyway #N= is not a good conceptual match with empty symbols. I don't have any objection to using ##.