From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Steven Allen Newsgroups: gmane.emacs.bugs Subject: bug#71398: 30.0.50; Byte-compiling eat 0.9.4 stalls Date: Fri, 07 Jun 2024 08:49:27 -0700 Message-ID: <87a5jw92ig.fsf@stebalien.com> References: <87frtqawbn.fsf@stebalien.com> <86y17hfgbv.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3356"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 71398@debbugs.gnu.org, Stefan Monnier To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Jun 08 01:42:04 2024 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 1sFjDf-0000dF-EY for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 08 Jun 2024 01:42:04 +0200 Original-Received: from [::1] (helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sFbqf-0007r3-G9; 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Fri, 7 Jun 2024 11:49:29 -0400 (EDT) In-Reply-To: <86y17hfgbv.fsf@gnu.org> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:286789 Archived-At: (CC Stefan because this appears to be caused by 16fc5b6c0c72464a75d9a84b754375662b3acec6) Eli Zaretskii writes: > Thanks, but why do you think this is a bug in Emacs and not in eat? > Did you report this to the eat developers? If not, I suggest to do > that first. Ah, I should have included that context. This version of EAT used to compile just fine, I only ran into an issue when I updated to master yesterday. On further investigation, this appears to be due to this [1] pcase. It doesn't actually hang forever, it just gets exponentially slower for each destructuring pattern with an internal operator like `or` or `and`. E.g.: (`((,(or ?B ?e)) nil ((,n))) (eat--t-cur-down n)) I've tracked it down to 16fc5b6c0c72464a75d9a84b754375662b3acec6. Reverting this commit makes `eat.el` compile instantly. [1]: https://codeberg.org/akib/emacs-eat/src/commit/3a6f418f55d183b9d86f99c140caed4ba3d44f93/eat.el#L3534