From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Sven Joachim Newsgroups: gmane.emacs.devel Subject: Re: Emacs 25.1 RC1: incipient insanity, or can't set debug-on-error. Date: Tue, 26 Jul 2016 23:08:17 +0200 Message-ID: <87k2g89kfy.fsf@turtle.gmx.de> References: <20160726203450.GA10926@acm.fritz.box> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1469567416 25253 80.91.229.3 (26 Jul 2016 21:10:16 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 26 Jul 2016 21:10:16 +0000 (UTC) Cc: emacs-devel@gnu.org To: Alan Mackenzie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Jul 26 23:10:07 2016 Return-path: Envelope-to: ged-emacs-devel@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 1bS9c7-0007CO-9f for ged-emacs-devel@m.gmane.org; Tue, 26 Jul 2016 23:10:07 +0200 Original-Received: from localhost ([::1]:42258 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bS9c6-00080z-H5 for ged-emacs-devel@m.gmane.org; Tue, 26 Jul 2016 17:10:06 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:57515) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bS9aT-0006qD-QB for emacs-devel@gnu.org; Tue, 26 Jul 2016 17:08:26 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bS9aQ-00089z-Ee for emacs-devel@gnu.org; Tue, 26 Jul 2016 17:08:25 -0400 Original-Received: from mout.gmx.net ([212.227.17.20]:55061) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bS9aQ-00089O-46 for emacs-devel@gnu.org; Tue, 26 Jul 2016 17:08:22 -0400 Original-Received: from localhost.localdomain ([91.19.62.100]) by mail.gmx.com (mrgmx103) with ESMTPSA (Nemesis) id 0MTSmp-1bqb8H3jNv-00SPoP; Tue, 26 Jul 2016 23:08:18 +0200 Original-Received: by localhost.localdomain (Postfix, from userid 1000) id 732B53F36F; Tue, 26 Jul 2016 23:08:17 +0200 (CEST) In-Reply-To: <20160726203450.GA10926@acm.fritz.box> (Alan Mackenzie's message of "Tue, 26 Jul 2016 20:34:50 +0000") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) X-Provags-ID: V03:K0:7wK2+JK+I3tbaLWfblC0w4lVoaNOG0uLxBSTwgrHWHGJQ7FxF/q XzAIwvPZerSEKLrUASSx28IsjLwWwYMZuv4MVsK4wbZjFxVMldYVPyZFQ6uI8wSul+xqbMV rsCUh5WEDd6YhIngHphogUFipRq5CVGO7QOJ92+Dj26RCIXmvkKdznLgWXjMZFrKiyZL0HX K9cLzmsXavrJRCAhyQerA== X-UI-Out-Filterresults: notjunk:1;V01:K0:D62RukVzuaE=:4k3qXtng5UKXn9L1a7vriL Nf/slClTqrE3vDLyTRcVpfWWBVVp2MjUk7rfAebTeTtbiC2haqJ9c9qQWnvOt7OO6UFn+tytL UDqDD3GtPOIiRFOFEZ41sMUACPFz8naEuQJfna2aX0J/5jNO7fwck7CTITvKNV5XsUskXakTn Q1miwAP3vf2DEbN8i7QaQcdlKzEjGlqvDCE7BdV6JwDZc5pyaxuFzXkzJPRzW9e3fzXfVguKo DMzsWt38dizjrAEBgtWF0efgVmrraFe233HaFAdgaWEOOsFJ9p0zTUeJi9RKvVH9GLg6tsC5T KbCxYfaqB4OhSmzZNa11+ezJFkeHZ0Qyc/5l6JtUxy/tVfRVUFChSx/HdUSfPZhJtB1eqkbpF QMfRF5X1fIu5PQweIpzqnKiiP5qqRVnFmJNtaOkwN7C7TImFzK6SqxSGrpuGjlirEhGUq4NNo jrlRSIV8P53Klfe029dZw74FpwDdZTngG1SwAt/GukP6KHBtmuv6+mK2SUqP01OFKFWWEt5jB ycMcIdymsVjmTBUa8Wds5H5K0ZkOIvhdIQtrDt5Zv/VzrAFDgw0LG6bLVqFf4SKCFGkbQXh3p OpU+ZISKfgwJP6+TR/HKbfgjzmBLSRvmQP0cefoJs2fsBGa9wLARNsMorpqYuIzMXiyLHBxeo gFQoCM7D5JHrJ2nbaeWAysg26OAA5C2CC1AilEqKzD0UtdIDeAHbJZHTZVeeH9NV3oVdPWrZt FcebADYilH/+dDgB5T8JlozMAeId5eTNgFjJfTP6TczUlfMWuUlgPVlBmpVu3d8UrKuLNnzJ X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 212.227.17.20 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:206163 Archived-At: On 2016-07-26 20:34 +0000, Alan Mackenzie wrote: > Hello, Emacs. > > Start RC1 with emacs -Q. > > M-: debug-on-error returns t. > C-h v debug-on-error states that the variable has value nil. How can > this be? > > M-: (setq debug-on-error nil) ; in buffer *scratch*, still. > M-: debug-on-error returns t. How can this be? See the documentation for debug-on-error: ,---- | debug-on-error is a variable defined in =E2=80=98C source code=E2=80=99. | Its value is nil |=20 | Documentation: | [...] | When you evaluate an expression interactively, this variable | is temporarily non-nil if =E2=80=98eval-expression-debug-on-error=E2=80= =99 is non-nil. `---- > Why does this variable behave so strangely? Or am I going mad? Or, > even both? Should I submit a bug report for this? Everything works as designed, AFAICS (by default, eval-expression-debug-on-error is t). Cheers, Sven