From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: Is there a way to instrument for edebug a form (say, a progn) given to `eval'? Date: Fri, 01 Jan 2016 09:22:45 -0500 Message-ID: References: <87k2nw866r.fsf@mbork.pl> <87twmxv2ad.fsf@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1451658210 20494 80.91.229.3 (1 Jan 2016 14:23:30 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 1 Jan 2016 14:23:30 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Jan 01 15:23:13 2016 Return-path: Envelope-to: geh-help-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 1aF0bm-0007SD-A3 for geh-help-gnu-emacs@m.gmane.org; Fri, 01 Jan 2016 15:23:10 +0100 Original-Received: from localhost ([::1]:36006 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aF0bl-0000QH-Gh for geh-help-gnu-emacs@m.gmane.org; Fri, 01 Jan 2016 09:23:09 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:53286) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aF0bZ-0000Q8-E3 for help-gnu-emacs@gnu.org; Fri, 01 Jan 2016 09:22:58 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aF0bW-0003xb-8E for help-gnu-emacs@gnu.org; Fri, 01 Jan 2016 09:22:57 -0500 Original-Received: from plane.gmane.org ([80.91.229.3]:52376) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aF0bW-0003xX-1i for help-gnu-emacs@gnu.org; Fri, 01 Jan 2016 09:22:54 -0500 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1aF0bU-0007A1-Dv for help-gnu-emacs@gnu.org; Fri, 01 Jan 2016 15:22:52 +0100 Original-Received: from 181.47.69.49 ([181.47.69.49]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 01 Jan 2016 15:22:52 +0100 Original-Received: from monnier by 181.47.69.49 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 01 Jan 2016 15:22:52 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 9 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 181.47.69.49 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) Cancel-Lock: sha1:AGBbfnS8UDDMRcGawGr8eNmnrqo= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:108569 Archived-At: > Probably bad and slow for some Lisps with compiler, but for interpreted > Lisps (as long as users can't abuse it)? The reason eval is evil has nothing to do with performance: it's a software engineering issue. It's kind of like using nconc instead of append, except magnified many times. Stefan