From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andy Wingo Newsgroups: gmane.lisp.guile.bugs Subject: bug#16357: insufficient print abbreviation in error messages Date: Tue, 21 Jun 2016 17:10:13 +0200 Message-ID: <871t3qy3vu.fsf__9403.4242596992$1466521897$gmane$org@pobox.com> References: <20140105230032.GB30283@fysh.org> <87ziqezqg5.fsf@pobox.com> <20160621123840.GZ1170@fysh.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1466521897 6332 80.91.229.3 (21 Jun 2016 15:11:37 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 21 Jun 2016 15:11:37 +0000 (UTC) Cc: 16357@debbugs.gnu.org, guile-devel@gnu.org To: Zefram Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Tue Jun 21 17:11:21 2016 Return-path: Envelope-to: guile-bugs@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 1bFNKd-0003sA-PG for guile-bugs@m.gmane.org; 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Tue, 21 Jun 2016 15:11:01 +0000 Original-Received: (at 16357) by debbugs.gnu.org; 21 Jun 2016 15:10:35 +0000 Original-Received: from localhost ([127.0.0.1]:49897 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bFNJz-0006K1-6k for submit@debbugs.gnu.org; Tue, 21 Jun 2016 11:10:35 -0400 Original-Received: from pb-sasl1.pobox.com ([64.147.108.66]:51980 helo=sasl.smtp.pobox.com) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bFNJl-0006Jg-PG for 16357@debbugs.gnu.org; Tue, 21 Jun 2016 11:10:34 -0400 Original-Received: from sasl.smtp.pobox.com (unknown [127.0.0.1]) by pb-sasl1.pobox.com (Postfix) with ESMTP id 6B00923A56; Tue, 21 Jun 2016 11:10:21 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; s=sasl; bh=9kjhafAKumlsLjQXdtDvymyZQdc=; b=oTweUc JLY68qfd9b3HtYTGBxug5SzYaU6NK97pEYV8s/GPWqO1oLRZL5W97TWMunlTS2Lk t4ft2uUpEK5c/VjBXYKpePXi/sg/Lr5EeYZUC9PbD3Wl0+4THW8oVpmimC8WwUHt +fa4ldiIJZ2kUwIvljyNT914ymY90xBFqNpIo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; q=dns; s=sasl; b=jrs9CrBLvmVS4xreQF0WLnkbX3tYUqhH tqyJgHmKp4x1Ved+gwxpQ68poLhILZt6YnRX0QcpMgTWfhl1naVb7nXtlYZR3wF6 1BMWJdLPD9A8Djt+vBJfgbQDjN2WAv5yy0md4Q1UcD76s1CKFj/a089Tvxw+L58X zUhDaZSNSVM= Original-Received: from pb-sasl1.nyi.icgroup.com (unknown [127.0.0.1]) by pb-sasl1.pobox.com (Postfix) with ESMTP id 6280223A55; Tue, 21 Jun 2016 11:10:21 -0400 (EDT) Original-Received: from clucks (unknown [88.160.190.192]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by pb-sasl1.pobox.com (Postfix) with ESMTPSA id 7811423A48; Tue, 21 Jun 2016 11:10:20 -0400 (EDT) In-Reply-To: <20160621123840.GZ1170@fysh.org> (zefram@fysh.org's message of "Tue, 21 Jun 2016 13:38:40 +0100") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) X-Pobox-Relay-ID: 45558562-37C2-11E6-9408-C1836462E9F6-02397024!pb-sasl1.pobox.com 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: 208.118.235.43 X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Original-Sender: "bug-guile" Xref: news.gmane.org gmane.lisp.guile.bugs:8104 Archived-At: On Tue 21 Jun 2016 14:38, Zefram writes: > Andy Wingo wrote: >>Thoughts? > > How was this managed in Guile 1.8? The printers and the backtrace handling was quite different, but it used "print states". > It seems that you need the truncated-print mechanism to be always > available internally, but this doesn't require that it be always visible > to the user. You can still require the full libraries to be loaded for > the user to get access. > > Lazy loading sounds like a bad idea. Error handling is a bad place to > attempt something that complex and failure-prone. That's what we do for backtrace printing in 2.2, for what it's worth. It's a tradeoff between memory size, good errors, maintainability, startup time, safety, duplication... the global optimimum corresponds to no per-axis optimimum :/ Andy