From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: flet not undone on lisp nesting error Date: Sun, 28 Feb 2010 20:01:50 -0500 Message-ID: References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1267407676 28715 80.91.229.12 (1 Mar 2010 01:41:16 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 1 Mar 2010 01:41:16 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Mon Mar 01 02:41:12 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 1NludD-0003SD-8B for geh-help-gnu-emacs@m.gmane.org; Mon, 01 Mar 2010 02:41:11 +0100 Original-Received: from localhost ([127.0.0.1]:41075 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NludC-0003rC-Mf for geh-help-gnu-emacs@m.gmane.org; Sun, 28 Feb 2010 20:41:10 -0500 Original-Path: news.stanford.edu!usenet.stanford.edu!news.glorb.com!news2.glorb.com!npeer03.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!post02.iad.highwinds-media.com!newsfe21.iad.POSTED!7564ea0f!not-for-mail Original-Newsgroups: gnu.emacs.help User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.92 (gnu/linux) Cancel-Lock: sha1:eilw1G6lMuHmYaTCeC9jmz3OIYs= Original-Lines: 11 Original-X-Complaints-To: abuse@UsenetServer.com Original-NNTP-Posting-Date: Mon, 01 Mar 2010 01:01:50 UTC Original-Xref: news.stanford.edu gnu.emacs.help:177216 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:72256 Archived-At: > However, if I trigger a "normal" error with (error) then both are > undone. Is this peculiar to a circular lisp nesting error, or are there > other classes of error upon which flet will not be undone? What is the > idiomatic way to protect against this (other than not having infinite > recursions in my code)? Do I have to keep copies of the original values > for use in an unwind-protect? Looks like a bug. Please report it via M-x report-emacs-bug. Stefan