From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andy Wingo Newsgroups: gmane.lisp.guile.devel Subject: Re: The empty string and other empty strings Date: Fri, 20 Jan 2012 22:31:43 +0100 Message-ID: <87k44mrrgg.fsf@pobox.com> References: <4F027F35.5020001@gmail.com> <4F04D01D.5050801@gnu.org> <8762grf28k.fsf@netris.org> <4F05DC47.1000202@gnu.org> <878vlldb4k.fsf@netris.org> <1325811764.22562.YahooMailNeo@web37903.mail.mud.yahoo.com> <87wr95bo9y.fsf@netris.org> <1325857075.77324.YahooMailNeo@web37903.mail.mud.yahoo.com> <877h14bsx0.fsf@netris.org> <4F07747A.4080202@gnu.org> <87sjjsa0kh.fsf@netris.org> <87boqfa8cd.fsf@netris.org> <874nw353a4.fsf_-_@gnu.org> <1326194907.55971.YahooMailNeo@web37901.mail.mud.yahoo.com> <87y5tf90c5.fsf@netris.org> <87pqer8t0p.fsf@netris.org> <87obubk17w.fsf@fencepost.gnu.org> <87lipf8rg5.fsf@netris.org> <87aa5smtzc.fsf@gnu.org> <871ur47y0g.fsf@fencepost.gnu.org> <87y5tb7e12.fsf@netris.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1327095119 29487 80.91.229.12 (20 Jan 2012 21:31:59 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 20 Jan 2012 21:31:59 +0000 (UTC) Cc: David Kastrup , guile-devel@gnu.org To: Mark H Weaver Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Fri Jan 20 22:31:55 2012 Return-path: Envelope-to: guile-devel@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 1RoM3u-0002wm-Uo for guile-devel@m.gmane.org; Fri, 20 Jan 2012 22:31:55 +0100 Original-Received: from localhost ([::1]:41569 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RoM3u-0006Ew-6E for guile-devel@m.gmane.org; Fri, 20 Jan 2012 16:31:54 -0500 Original-Received: from eggs.gnu.org ([140.186.70.92]:59749) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RoM3r-0006Er-Iw for guile-devel@gnu.org; Fri, 20 Jan 2012 16:31:52 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RoM3q-0008Tq-8E for guile-devel@gnu.org; Fri, 20 Jan 2012 16:31:51 -0500 Original-Received: from a-pb-sasl-sd.pobox.com ([74.115.168.62]:36891 helo=sasl.smtp.pobox.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RoM3o-0008TW-ND; Fri, 20 Jan 2012 16:31:48 -0500 Original-Received: from sasl.smtp.pobox.com (unknown [127.0.0.1]) by a-pb-sasl-sd.pobox.com (Postfix) with ESMTP id EE3AC8AA4; Fri, 20 Jan 2012 16:31:47 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; s=sasl; bh=JWNIYDPBXvhjeMEYFXp/iipu59A=; b=l6dfyF /fV3HC3AjxSAy/Im3ndb5yn0ytpdmj04PaurLcru9ehORPxHu9qyroHqMOLUQT5O ydTnjVBttc37d+2iUAhIlcTdQjKXSfX24Wkgqbs/tyYg03UfjsnFBMOf+PpMIM85 O9rUB3jh1YQBW6qr1rt4vOC+qOvAPeOlopnww= DomainKey-Signature: a=rsa-sha1; c=nofws; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; q=dns; s=sasl; b=ot4X7HRYSACt0/NgpuI1wvyILnDXlaiQ f+cqWRdOsUTzRlMqC6rMVopSiaDbCrAMol55f/dgaJzUg88uUUfdw6KAmTDLdUPE Q7W+8HkxGN/6cBcooGsLmE/d3YMGPFqtldIhDcnGifEi9BNZSNZgFbDPsD9B1ohI ub4sQWaW/jA= Original-Received: from a-pb-sasl-sd.pobox.com (unknown [127.0.0.1]) by a-pb-sasl-sd.pobox.com (Postfix) with ESMTP id E70B88AA3; Fri, 20 Jan 2012 16:31:47 -0500 (EST) Original-Received: from badger (unknown [90.164.198.39]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by a-pb-sasl-sd.pobox.com (Postfix) with ESMTPSA id 4EC2F8AA2; Fri, 20 Jan 2012 16:31:47 -0500 (EST) In-Reply-To: <87y5tb7e12.fsf@netris.org> (Mark H. Weaver's message of "Fri, 13 Jan 2012 11:39:21 -0500") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) X-Pobox-Relay-ID: 2826C99A-43AE-11E1-AF71-65B1DE995924-02397024!a-pb-sasl-sd.pobox.com X-detected-operating-system: by eggs.gnu.org: Solaris 10 (beta) X-Received-From: 74.115.168.62 X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:13609 Archived-At: On Fri 13 Jan 2012 17:39, Mark H Weaver writes: > Should we defend the legitimacy of this optimization, and ask the R7RS > working group to include explicit language specifying that empty > strings/vectors need not be freshly allocated? It's a worthwhile question IMO. I'll mail scheme-reports. Andy -- http://wingolog.org/