From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: Re: xasserts and vertical motion. Date: Tue, 22 Feb 2005 03:42:55 -0500 Message-ID: References: Reply-To: rms@gnu.org NNTP-Posting-Host: main.gmane.org X-Trace: sea.gmane.org 1109062707 22634 80.91.229.2 (22 Feb 2005 08:58:27 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Tue, 22 Feb 2005 08:58:27 +0000 (UTC) Cc: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Feb 22 09:58:26 2005 Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1D3Vs2-0001c0-Lm for ged-emacs-devel@m.gmane.org; Tue, 22 Feb 2005 09:58:18 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1D3W99-0001ZF-HZ for ged-emacs-devel@m.gmane.org; Tue, 22 Feb 2005 04:15:59 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1D3Vr1-0004NH-Bp for emacs-devel@gnu.org; Tue, 22 Feb 2005 03:57:15 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1D3Vqy-0004MJ-Pd for emacs-devel@gnu.org; Tue, 22 Feb 2005 03:57:13 -0500 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1D3Vqx-0004M4-Qx for emacs-devel@gnu.org; Tue, 22 Feb 2005 03:57:12 -0500 Original-Received: from [199.232.76.164] (helo=fencepost.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.34) id 1D3Vd9-0003lk-PJ for emacs-devel@gnu.org; Tue, 22 Feb 2005 03:42:55 -0500 Original-Received: from rms by fencepost.gnu.org with local (Exim 4.34) id 1D3Vd9-00008P-Bt; Tue, 22 Feb 2005 03:42:55 -0500 Original-To: David Kastrup In-reply-to: (message from David Kastrup on Mon, 21 Feb 2005 00:08:58 +0100) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org X-MailScanner-To: ged-emacs-devel@m.gmane.org Xref: main.gmane.org gmane.emacs.devel:33718 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:33718 b) they don't check for _structural_ incoherence (namely that Emacs' internal data structures are not garbled), but for _visual_ incoherence. But for debugging this one needs information about what kind of things happen on the screen at the time, and just in what manner some expectations might get violated. This is much easier to get when Emacs remains operative and gets a chance to _display_ the result of the operation instead of committing suicide. You should be able to continue by typing the GDB `return' command and then `c'. Does it work?