From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.bugs Subject: bug#18154: 24.4.50; eval-buffer ignores debug-on-error sometimes Date: Wed, 06 Aug 2014 13:11:51 -0400 Message-ID: References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1407345211 26648 80.91.229.3 (6 Aug 2014 17:13:31 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 6 Aug 2014 17:13:31 +0000 (UTC) Cc: 18154@debbugs.gnu.org To: Helmut Eller Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Aug 06 19:13:22 2014 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 1XF4m9-0008Kh-Nl for geb-bug-gnu-emacs@m.gmane.org; Wed, 06 Aug 2014 19:13:21 +0200 Original-Received: from localhost ([::1]:40193 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XF4m9-0005ZG-8l for geb-bug-gnu-emacs@m.gmane.org; Wed, 06 Aug 2014 13:13:21 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:42554) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XF4ly-0005Y6-Ok for bug-gnu-emacs@gnu.org; Wed, 06 Aug 2014 13:13:18 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XF4lq-000670-IS for bug-gnu-emacs@gnu.org; Wed, 06 Aug 2014 13:13:10 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:53641) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XF4lq-00066u-F4 for bug-gnu-emacs@gnu.org; Wed, 06 Aug 2014 13:13:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XF4lq-0004rc-47 for bug-gnu-emacs@gnu.org; Wed, 06 Aug 2014 13:13:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 06 Aug 2014 17:13:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18154 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18154-submit@debbugs.gnu.org id=B18154.140734514018637 (code B ref 18154); Wed, 06 Aug 2014 17:13:02 +0000 Original-Received: (at 18154) by debbugs.gnu.org; 6 Aug 2014 17:12:20 +0000 Original-Received: from localhost ([127.0.0.1]:60584 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XF4l9-0004qW-IN for submit@debbugs.gnu.org; Wed, 06 Aug 2014 13:12:19 -0400 Original-Received: from mercure.iro.umontreal.ca ([132.204.24.67]:48115) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XF4l7-0004qO-Dc for 18154@debbugs.gnu.org; Wed, 06 Aug 2014 13:12:18 -0400 Original-Received: from hidalgo.iro.umontreal.ca (hidalgo.iro.umontreal.ca [132.204.27.50]) by mercure.iro.umontreal.ca (Postfix) with ESMTP id D869384F37; Wed, 6 Aug 2014 13:12:16 -0400 (EDT) Original-Received: from lechon.iro.umontreal.ca (lechon.iro.umontreal.ca [132.204.27.242]) by hidalgo.iro.umontreal.ca (Postfix) with ESMTP id 0C3E61E5B74; Wed, 6 Aug 2014 13:11:52 -0400 (EDT) Original-Received: by lechon.iro.umontreal.ca (Postfix, from userid 20848) id C7742B40CD; Wed, 6 Aug 2014 13:11:51 -0400 (EDT) In-Reply-To: (Helmut Eller's message of "Wed, 30 Jul 2014 22:55:07 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) X-DIRO-MailScanner-Information: Please contact the ISP for more information X-DIRO-MailScanner: Found to be clean X-DIRO-MailScanner-SpamCheck: n'est pas un polluriel, SpamAssassin (score=-2.82, requis 5, autolearn=not spam, ALL_TRUSTED -2.82, MC_TSTLAST 0.00) X-DIRO-MailScanner-From: monnier@iro.umontreal.ca 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:92192 Archived-At: > Starting Emacs with: > emacs -Q -nw \ > -eval '(setq debug-on-error t)' \ > -eval '(insert "(defun f () (push))")' \ > -f eval-buffer > only prints this message: > Eager macro-expansion failure: (wrong-number-of-arguments (2 . 2) 0) > This is not what I expect; Emacs should enter the debugger instead. The eager-macroexpansion is not indispensable (so far), so any errors that happen during it are demoted to mere warnings (like the line you quote above). Hence debug-on-error doesn't cause you to get a backtrace. You'd need to use debug-on-signal for that. But you should indeed be dropped into the debugger if/when you call `f' (unless you redefine `push' to accept 0 arguments before you call `f', obviously). > If "(defun f () (push))" is replaced by "(/ 1 0)" then the > debugger pops up as expected. Of course. Note that when (defun f () (push)) is evaluated, it just defines `f' but doesn't actually run `push' (tho eager-macroexpansion tries to macroexpand `push' in the hope to avoid having to do it every time `f' gets called). Stefan