From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Elena Newsgroups: gmane.emacs.help Subject: Re: Lexical binding and macros. Date: Wed, 15 Dec 2010 01:15:00 -0800 (PST) Organization: http://groups.google.com Message-ID: <96134923-1314-4675-bd77-004945a7159e@y3g2000vbm.googlegroups.com> References: <87r5dmkir6.fsf@kuiper.lan.informatimago.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: dough.gmane.org 1292406238 2218 80.91.229.12 (15 Dec 2010 09:43:58 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Wed, 15 Dec 2010 09:43:58 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Dec 15 10:43:53 2010 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1PSntp-0001Ml-MP for geh-help-gnu-emacs@m.gmane.org; Wed, 15 Dec 2010 10:43:53 +0100 Original-Received: from localhost ([127.0.0.1]:36773 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PSntn-0005TR-W2 for geh-help-gnu-emacs@m.gmane.org; Wed, 15 Dec 2010 04:43:52 -0500 Original-Path: usenet.stanford.edu!postnews.google.com!y3g2000vbm.googlegroups.com!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 20 Original-NNTP-Posting-Host: 89.96.190.244 Original-X-Trace: posting.google.com 1292404500 7077 127.0.0.1 (15 Dec 2010 09:15:00 GMT) Original-X-Complaints-To: groups-abuse@google.com Original-NNTP-Posting-Date: Wed, 15 Dec 2010 09:15:00 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: y3g2000vbm.googlegroups.com; posting-host=89.96.190.244; posting-account=AFCLjAoAAABJAOf_HjgEEEi3ty-lG5m2 User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13,gzip(gfe) Original-Xref: usenet.stanford.edu gnu.emacs.help:183282 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:77518 Archived-At: On Dec 15, 4:24=A0am, Stefan Monnier wrote: > >> ehm ... isn't "lexical-let" from the common lisp extension supposed to > >> support closures? > > They're not really closures. > > Actually, they are closures. =A0Admittedly, they're not as efficient as > one might like, but other than that, they work very well, thank you. > > =A0 =A0 =A0 =A0 Stefan Do they still leak memory? From http://c2.com/cgi/wiki?EmacsLisp : "Note that variables bound with lexical-let are never released, even if they are never used. Try (loop for i from 1 to 100000 collect (lexical-let ((x i)) '())) and watch it eat memory. So making infinity (ZeroOneInfinity) lexical variables is out of the question except for very small values of infinity."