From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Newsgroups: gmane.emacs.bugs Subject: bug#39595: #39595: M-x compile still very line-length weak Date: Fri, 14 Feb 2020 17:27:39 +0100 Message-ID: References: <9D8A11CB-9ABE-4A66-87D0-2E445499B74F@acm.org> Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="76822"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 39595@debbugs.gnu.org To: =?UTF-8?Q?=E7=A9=8D=E4=B8=B9=E5=B0=BC?= Dan Jacobson , Eli Zaretskii , Stefan Monnier , Paul Pogonyshev Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Feb 14 17:28:13 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1j2dp6-000JmF-C2 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 14 Feb 2020 17:28:12 +0100 Original-Received: from localhost ([::1]:41184 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j2dp5-0005Ta-77 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 14 Feb 2020 11:28:11 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59969) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j2dox-0005TS-Sc for bug-gnu-emacs@gnu.org; Fri, 14 Feb 2020 11:28:04 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j2dow-0004BD-T9 for bug-gnu-emacs@gnu.org; Fri, 14 Feb 2020 11:28:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:56845) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1j2dow-0004Am-G6 for bug-gnu-emacs@gnu.org; Fri, 14 Feb 2020 11:28:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1j2dow-0004Cg-DV for bug-gnu-emacs@gnu.org; Fri, 14 Feb 2020 11:28:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 14 Feb 2020 16:28:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 39595 X-GNU-PR-Package: emacs Original-Received: via spool by 39595-submit@debbugs.gnu.org id=B39595.158169767316143 (code B ref 39595); Fri, 14 Feb 2020 16:28:02 +0000 Original-Received: (at 39595) by debbugs.gnu.org; 14 Feb 2020 16:27:53 +0000 Original-Received: from localhost ([127.0.0.1]:34585 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1j2don-0004CJ-7j for submit@debbugs.gnu.org; Fri, 14 Feb 2020 11:27:53 -0500 Original-Received: from mail1435c50.megamailservers.eu ([91.136.14.35]:49720 helo=mail263c50.megamailservers.eu) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1j2dol-0004C4-40 for 39595@debbugs.gnu.org; Fri, 14 Feb 2020 11:27:51 -0500 X-Authenticated-User: mattiase@bredband.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megamailservers.eu; s=maildub; t=1581697664; bh=vHwz17yCkvFGax4LvF38s+/gOCFSWiU6ZQeGWyMWX18=; h=Subject:From:In-Reply-To:Date:Cc:References:To:From; b=DpBDVZkORqnVVs+yYHCfuE+rq3yuI5C2bJaDsfBfbVLV0jzGtkdUdnXWMWdU26RuY yzvtosZ5X/LKf5FQD+MbyJe4v87aQz0duCgCMlR0vjfMxQHFYxhFlqnpEs4V1puz3b enUIJPnfFlsE57stmpGpGvEtqaI11p0yuBsX4z9g= Feedback-ID: mattiase@acm.or Original-Received: from stanniol.lan (c-6f4fe655.032-75-73746f71.bbcust.telenor.se [85.230.79.111]) (authenticated bits=0) by mail263c50.megamailservers.eu (8.14.9/8.13.1) with ESMTP id 01EGReG0008240; Fri, 14 Feb 2020 16:27:42 +0000 In-Reply-To: <9D8A11CB-9ABE-4A66-87D0-2E445499B74F@acm.org> X-Mailer: Apple Mail (2.3445.104.11) X-CTCH-RefID: str=0001.0A0B020B.5E46CA80.0030, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0 X-CTCH-VOD: Unknown X-CTCH-Spam: Unknown X-CTCH-Score: 0.000 X-CTCH-Flags: 0 X-CTCH-ScoreCust: 0.000 X-CSC: 0 X-CHA: v=2.3 cv=II989TnG c=1 sm=1 tr=0 a=fHaj9vQUQVKQ4sUldAaXuQ==:117 a=fHaj9vQUQVKQ4sUldAaXuQ==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=kj9zAlcOel0A:10 a=M51BFTxLslgA:10 a=EuFwmYcipPse7gDJoKEA:9 a=CjuIK1q_8ugA:10 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:176061 Archived-At: Dan, in your example you used a long line of spaces. Presumably that is = representative for your particular use, but different message parsers = are sensitive to different kinds of long lines: * 'omake' in compilation-error-regexp-alist is indeed what makes Emacs = unusably slow with long lines of spaces. * 'msft' and 'watcom' are both expensive with long lines of spaces, but = not as bad as 'omake'. Maybe these regexps can be tuned further. * 'msft' occurs twice by mistake; the last one should be removed. This = helps a bit. * 'maven' is still expensive for long lines of non-spaces; see bug#3441. = Anchoring the match at line-start would fix it: (rx bol (? "[" (or "ERROR" (group "WARNING") (group "INFO")) "]" (+ " ")) (group (not (in "\n ")) (* (or (not (in "\n :")) (: " " (not (in "\n/-"))) (: ":" (not (in "\n [")))))) ":[" (group (+ digit)) "," (group (+ digit)) "] ") Is that correct? (CC:ing Paul Pogonyshev, who worked on that regexp in = bug#20556.) I suggest we disable omake by default --- although a nice tool, it was = never widely used, and OCaml programmers tend to use Dune (or plain = Make) these days. The omake rule will still be there for those who need = it, but the majority shouldn't bear the cost.