From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Rasmus Newsgroups: gmane.emacs.bugs Subject: bug#21077: 24.5; Slow printing in inferior python buffer with python-shell-enable-font-lock Date: Fri, 17 Jul 2015 10:56:05 +0200 Message-ID: <87d1zrkvru.fsf@gmx.us> References: <83615k6jf7.fsf@gnu.org> <834ml37v7a.fsf@gnu.org> <83380n6zrn.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1437123449 627 80.91.229.3 (17 Jul 2015 08:57:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 17 Jul 2015 08:57:29 +0000 (UTC) To: 21077@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Jul 17 10:57:17 2015 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 1ZG1SH-0001cN-2X for geb-bug-gnu-emacs@m.gmane.org; Fri, 17 Jul 2015 10:57:17 +0200 Original-Received: from localhost ([::1]:43599 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZG1SB-0000ph-AW for geb-bug-gnu-emacs@m.gmane.org; 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X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). 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:105004 Archived-At: Stefan Monnier writes: >> It wasn't. Something is clearly wrong with the regexps involved in >> this recipe, at least. > > The trigger is simple and a well-known problem in Emacs: the command you > pass to Python outputs one very long line, and Emacs assumes at various places > that lines aren't too long. One such assumption is in font-lock itself, > another appears to be in one of the regexps used in the font-lock config > of inferior python mode. The problem is also very much present in the R interface provided by ESS. The R package data.table has a pretty good solution to long output IMO. E.g. R> data.table(x=1:1000000) x 1: 1 2: 2 3: 3 4: 4 5: 5 --- 999996: 999996 999997: 999997 999998: 999998 999999: 999999 1000000: 1000000 As I remember Python Pandas does something similar. Would it be feasible to implement a generalized version of cutting output for comint-like output if exceeding N lines? Rasmus -- Warning: Everything saved will be lost