From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Noam Postavsky Newsgroups: gmane.emacs.bugs Subject: bug#36145: 26.2; Unable to "trigger another backtrace" Date: Sun, 09 Jun 2019 11:50:11 -0400 Message-ID: <87a7eq21xo.fsf@gmail.com> References: <87o9370x44.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="267288"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) Cc: 36145@debbugs.gnu.org To: Xu Chunyang Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Jun 09 17:53:10 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ha086-0017R0-FB for geb-bug-gnu-emacs@m.gmane.org; Sun, 09 Jun 2019 17:53:10 +0200 Original-Received: from localhost ([::1]:36580 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ha085-0001pD-GT for geb-bug-gnu-emacs@m.gmane.org; Sun, 09 Jun 2019 11:53:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:43901) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ha063-0000sC-2N for bug-gnu-emacs@gnu.org; Sun, 09 Jun 2019 11:51:03 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ha062-0005sq-5g for bug-gnu-emacs@gnu.org; Sun, 09 Jun 2019 11:51:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:41700) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ha062-0005se-2Q for bug-gnu-emacs@gnu.org; Sun, 09 Jun 2019 11:51:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ha061-0002AE-V0 for bug-gnu-emacs@gnu.org; Sun, 09 Jun 2019 11:51:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Noam Postavsky Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 09 Jun 2019 15:51:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 36145 X-GNU-PR-Package: emacs Original-Received: via spool by 36145-submit@debbugs.gnu.org id=B36145.15600954208271 (code B ref 36145); Sun, 09 Jun 2019 15:51:01 +0000 Original-Received: (at 36145) by debbugs.gnu.org; 9 Jun 2019 15:50:20 +0000 Original-Received: from localhost ([127.0.0.1]:55244 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ha05L-00029L-Un for submit@debbugs.gnu.org; Sun, 09 Jun 2019 11:50:20 -0400 Original-Received: from mail-it1-f179.google.com ([209.85.166.179]:51421) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ha05J-000296-W4 for 36145@debbugs.gnu.org; Sun, 09 Jun 2019 11:50:18 -0400 Original-Received: by mail-it1-f179.google.com with SMTP id m3so9726376itl.1 for <36145@debbugs.gnu.org>; Sun, 09 Jun 2019 08:50:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version:content-transfer-encoding; bh=4TKMl6kn+NxO16/pk8QXXMsXOW8BCTv2CCJkcSCL4VM=; b=pMMUKDynQWiK++1H0jAXPng/qPplwkrG91sZdfGgtYUWDkYAojruFICsqR73Dowr2a xlrw/XUtqUE9Lt2gdtnenSQZooDFz4t3CU5UtyDc4UehNE0DYFaAhWYLnBoz8nh/y3Wy DXfOMMLx2gBwrmJT9qUJFCP7T1SX+gUFeEgbIdudtFZc9+FHllGdN4wPEkXM4WEnkjrN 6AuDSe1styMOJFpwMkowxJvOZuZ1mt3MUP9PxRqlXIswTTbqO0Nid3dEwU7n+aNov2Sg lEm4oBE2ERGQPCeIuZCxSYWBSOnPVMXfQG6OIPbIGKNJUieAmobynuKrkcsI6GNHca+g AroQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version:content-transfer-encoding; bh=4TKMl6kn+NxO16/pk8QXXMsXOW8BCTv2CCJkcSCL4VM=; b=ji7EMDCAuY99nEn7Qea6cQ3WJqZvEZ+wBkIWFrWm3LoB7P0fMrDLAbuMxeUEb71mZS DK0aUoE+sLWzFFsFFYG8IRJANfcbIettvpu3ysttbWe5JR8DGonE1gV5whgLVzv7fuMU uyu2inrV0wOtNrhtAVIvSzHCGp11XCVtubgzSEdwx+GZfnVeOPDodwa4P6xiik6qxoKN JrolmKr6Iyibm2VIURP6Sp7WQBosnJCu8h/Uz+ZxD37LrAJGBKSwybb0hDxBMVwatNiK SeiRWjpSeFNXMwelcSkFxY1GXDjFrNOujz9f+goFOU+zL57FpvB5hCxbgWEaXQ7Ce0vV SdDQ== X-Gm-Message-State: APjAAAWNgnZQcJmZrz0QK3PsIjgjAiKFL7hgoDW50Isiq8XOZ53l4JM0 5RPahsijXjnAAO2EXx98sJ3t24bg X-Google-Smtp-Source: APXvYqwdVhRoMSHCi+T7Cyfu63s0KbzgCIsV07/4J1iwi2z8D2xWPUic7oJkJhK3P3JJvOg9xL+lSA== X-Received: by 2002:a24:ac58:: with SMTP id m24mr12108975iti.65.1560095412230; Sun, 09 Jun 2019 08:50:12 -0700 (PDT) Original-Received: from minid (cbl-45-2-119-34.yyz.frontiernetworks.ca. [45.2.119.34]) by smtp.gmail.com with ESMTPSA id r143sm559941ita.0.2019.06.09.08.50.11 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 09 Jun 2019 08:50:11 -0700 (PDT) In-Reply-To: <87o9370x44.fsf@gmail.com> (Noam Postavsky's message of "Sun, 09 Jun 2019 08:19:39 -0400") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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" Xref: news.gmane.org gmane.emacs.bugs:160288 Archived-At: Noam Postavsky writes: > Xu Chunyang writes: > >> (info "(elisp) Using Debugger") says >> >>> When the debugger has been entered, the =E2=80=98debug-on-error=E2=80= =99 variable is >>> temporarily set according to =E2=80=98eval-expression-debug-on-error=E2= =80=99. If the >>> latter variable is non-=E2=80=98nil=E2=80=99, =E2=80=98debug-on-error= =E2=80=99 will temporarily be set >>> to =E2=80=98t=E2=80=99. This means that any further errors that occur = while doing a >>> debugging session will (by default) trigger another backtrace. >> >> Text before "This means.." is correct, but the conclusion seems >> incorrect, to reproduce >> >> - emacs -Q >> - M-: (/ 1 0) ;; enter the debugger >> - M-: (/ 2 0) ;; just message the error, no another backtrace >> >> Am I misunderstanding "trigger another backtrace"? > > I think this is a documentation bug. You don't get another backtrace > because inhibit-debugger is bound to t before invoking the debugger. Although it is possible to trigger another backtrace if the first one was from calling `debug' directly, e.g., M-: (debug) RET.