From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: [PATCH] add compiled regexp primitive lisp object Date: Tue, 24 Dec 2024 10:14:29 -0500 Message-ID: References: <87mslxxddk.fsf@protonmail.com> <5He97LtsyeyQoTLU7d91oP2CLO8s_2afdgcNxozsFjzu8qGbB_7nXmsZL5O6Ej7K-tuEmngCcPKJpDAjxeKz4jk1DvqSUbdOLpw5U1vo1SY=@hypnicjerk.ai> <87le1avopk.fsf@protonmail.com> <2LOLmIp1X8w4CGbqq3qDrzmKVA0KzYNL1N9lBtWdB-MtEv9oCuYgJMYprG170wMPjYxeQImAmWOPatGTTl4KxZMlptNo9A9hnHt84vdN9EA=@hypnicjerk.ai> <87ttfxtszi.fsf@protonmail.com> <86r0b1o5sr.fsf@gnu.org> <868qx8o83w.fsf@gnu.org> <875xscec62.fsf@gmail.com> <87o764sb6y.fsf@gmail.com> <87a5cn7cnu.fsf@localhost> <86cyhj5xmc.fsf@gnu.org> <87ttavlc50.fsf@localhost> <86a5cn5v1n.fsf@gnu.org> <87r05zlas8.fsf@localhost> <8634ie60jd.fsf@gnu.org> <87y106jr4i.fsf@localhost> <87ikr9ig2g.fsf@localhost> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31307"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Eli Zaretskii , mattiase@acm.org, arstoffel@gmail.com, eller.helmut@gmail.com, dmcc2@hypnicjerk.ai, pipcet@protonmail.com, emacs-devel@gnu.org, acorallo@gnu.org, stefankangas@gmail.com To: Ihor Radchenko Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Dec 24 16:15:15 2024 Return-path: Envelope-to: ged-emacs-devel@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 1tQ6cs-0007zC-Jh for ged-emacs-devel@m.gmane-mx.org; Tue, 24 Dec 2024 16:15:14 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tQ6cJ-0005nT-Vb; Tue, 24 Dec 2024 10:14:39 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tQ6cI-0005nH-Mw for emacs-devel@gnu.org; Tue, 24 Dec 2024 10:14:38 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tQ6cG-0003gn-D9; Tue, 24 Dec 2024 10:14:38 -0500 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 08FA7443527; Tue, 24 Dec 2024 10:14:32 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1735053270; bh=MVd/8ysXQ2y9Au9/2AJS1YmBc/ChzXyH1kYn5VD2Rqo=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=NdK4o/iufj7cD0sfgxppIj9JSdHRwvEPZ4D1+CdqIaKueVBtUswtZwXugYsmy25D2 n/IWfQcq87/+28SNFuMsVPSMOpGxRYpIyKBOccgvkUerZ+3jsNnqqpG59p6J3CoTfm hZ2Bqlpk4VpXUEQ4cAdNQq/J7a7UDIHhpojhCYr7jhHGsWgtIYYKj/YQx8TiamjhNd ia8rVq+fXZRBqlft50wtdD9axR08AfPoZbTv+4xMQk53Y0ZGt0kGaofxpcjM/tdthl GmQer04MPArYqoRUKocOpEGczIbwwC6y+gz4uSQZwlAItT9Cxi7jcFQOoW08lp/Sqe VRa/luqt9NnSw== Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id D8F7544115C; Tue, 24 Dec 2024 10:14:30 -0500 (EST) Original-Received: from pastel (104-195-225-43.cpe.teksavvy.com [104.195.225.43]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 7DB2D120401; Tue, 24 Dec 2024 10:14:30 -0500 (EST) In-Reply-To: <87ikr9ig2g.fsf@localhost> (Ihor Radchenko's message of "Tue, 24 Dec 2024 09:30:15 +0000") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:327021 Archived-At: >>> 1. They could be inspected from Elisp, and hopefully optimized >>> better. For now, there is simply no way to detect which parts of >>> regexps are slow and which are not. >> You can now/already use `re--describe-compiled` to inspect the compiled >> regexps used by Emacs's regexp engine. > But only when Emacs is compiled with --enable-checking. Also, no > documentation about the output is available. So, in its current form, > `re--describe-compiled' is only usable for debugging Emacs itself. Not > on Elisp-hacker level. > `re--describe-compiled' can certainly be improved. It's definitely crude, yes. Mattias also had an ELisp package that did a better job and should now work even without `--enable-checking`: https://github.com/mattiase/regexp-disasm Stefan