From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.bugs Subject: bug#15101: 24.3.50; debugger-eval-expression broken Date: Thu, 15 Aug 2013 08:06:37 -0700 (PDT) Message-ID: References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1376579243 18972 80.91.229.3 (15 Aug 2013 15:07:23 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 15 Aug 2013 15:07:23 +0000 (UTC) Cc: 15101@debbugs.gnu.org To: Stefan Monnier , Helmut Eller Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Aug 15 17:07:24 2013 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1V9z91-0001kp-Ti for geb-bug-gnu-emacs@m.gmane.org; Thu, 15 Aug 2013 17:07:24 +0200 Original-Received: from localhost ([::1]:53832 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V9z91-0000ot-Es for geb-bug-gnu-emacs@m.gmane.org; Thu, 15 Aug 2013 11:07:23 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60985) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V9z8q-0000nh-2i for bug-gnu-emacs@gnu.org; Thu, 15 Aug 2013 11:07:20 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V9z8h-00066F-8P for bug-gnu-emacs@gnu.org; Thu, 15 Aug 2013 11:07:12 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:37999) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V9z8h-000663-0t for bug-gnu-emacs@gnu.org; Thu, 15 Aug 2013 11:07:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1V9z8g-0005c4-GK for bug-gnu-emacs@gnu.org; Thu, 15 Aug 2013 11:07:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Drew Adams Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 15 Aug 2013 15:07:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15101 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 15101-submit@debbugs.gnu.org id=B15101.137657921121557 (code B ref 15101); Thu, 15 Aug 2013 15:07:02 +0000 Original-Received: (at 15101) by debbugs.gnu.org; 15 Aug 2013 15:06:51 +0000 Original-Received: from localhost ([127.0.0.1]:60548 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1V9z8U-0005bd-FV for submit@debbugs.gnu.org; Thu, 15 Aug 2013 11:06:50 -0400 Original-Received: from userp1040.oracle.com ([156.151.31.81]:27559) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1V9z8S-0005bK-CA for 15101@debbugs.gnu.org; Thu, 15 Aug 2013 11:06:48 -0400 Original-Received: from ucsinet22.oracle.com (ucsinet22.oracle.com [156.151.31.94]) by userp1040.oracle.com (Sentrion-MTA-4.3.1/Sentrion-MTA-4.3.1) with ESMTP id r7FF6dVn010988 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 15 Aug 2013 15:06:40 GMT Original-Received: from userz7021.oracle.com (userz7021.oracle.com [156.151.31.85]) by ucsinet22.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id r7FF6cdG025213 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 15 Aug 2013 15:06:39 GMT Original-Received: from abhmt120.oracle.com (abhmt120.oracle.com [141.146.116.72]) by userz7021.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id r7FF6cxW018876; Thu, 15 Aug 2013 15:06:38 GMT In-Reply-To: X-Priority: 3 X-Mailer: Oracle Beehive Extensions for Outlook 2.0.1.8 (707110) [OL 12.0.6668.5000 (x86)] X-Source-IP: ucsinet22.oracle.com [156.151.31.94] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x 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:77380 Archived-At: > > Start Emacs with: emacs -Q --eval '(let ((foo 123)) (debug))' > > Then press e. Enter foo to evaluate the local variable foo. But it > > doesn't work; it only generates the error: > > debugger-eval-expression: Symbol's value as variable is void: foo > > This used to work fine in previous versions. >=20 > Indeed, this is a change that will trip up users. Here's what's > happening: `e' will now run the code in the context in which the "code > on the current line" was run. >=20 > This refinement can be useful for dynamically bound variables, but was > mostly added for lexically bound variables, where it's indispensable. >=20 > So the above recipe works again if you use C-p before `e' so that point > is now on the top-most line, which stands for "in the context that > called `debug'". >=20 > I think a good fix is to change debug.el so that point starts on the > first line of the *Debugger* buffer rather than on the second. In your judgment, can both the old `e' behavior and the new `e' behavior be useful, at least for dynamically bound variables? If so, perhaps consider having two different keys, for the two different behaviors.