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.bugs Subject: bug#46274: 28.0.50; Inconsistent doc for syntax-propertize-function Date: Thu, 04 Feb 2021 15:34:33 -0500 Message-ID: References: <871rdwgrjw.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="2581"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 46274@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Feb 04 21:35:12 2021 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 1l7lLL-0000Ww-UB for geb-bug-gnu-emacs@m.gmane-mx.org; 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Thu, 04 Feb 2021 20:35:01 +0000 Original-Received: (at 46274) by debbugs.gnu.org; 4 Feb 2021 20:34:48 +0000 Original-Received: from localhost ([127.0.0.1]:42363 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1l7lKu-0003u0-GI for submit@debbugs.gnu.org; Thu, 04 Feb 2021 15:34:48 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:54458) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1l7lKs-0003tn-BI for 46274@debbugs.gnu.org; Thu, 04 Feb 2021 15:34:43 -0500 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 72B9A80BB9; Thu, 4 Feb 2021 15:34:36 -0500 (EST) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id AE90F807E9; Thu, 4 Feb 2021 15:34:34 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1612470874; bh=iFZBJn76RvoHdODQphhTRIFUh8NLzrQ6DasY1/Cj7yo=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=X2e3uG7WZEU8DSS+GALRmdIeDZsiuoezGHcOkVNC9x3vECxQXPLUBW08BmF7/t9g7 evo2nNxH8Q1Wh9pWj6dtEHGqadjFdcGzPZbiVbkqBwthP4ZdP1ephd90rHv5NI6pNK LkIanLwVvEOLiB78QkRfwnp6l+kXc47wHSZ58JIMvD5VT7rAnl2eBBpd4KEVn31UZT drEXhn2DHJoaH+vI4qvGH6WmZ2uH97fzCm1dE0QUFbBb7XsJvEEB22i1OuK8zmxBE5 B99W9pcwyw+TwqJHQykDTWU1WCgU8Kjg89blIrAQAms5tDtOASzkjY7gcyc69rr17E G2xQ2Bx5kkJiA== Original-Received: from alfajor (76-10-182-85.dsl.teksavvy.com [76.10.182.85]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 8512B120286; Thu, 4 Feb 2021 15:34:34 -0500 (EST) In-Reply-To: <871rdwgrjw.fsf@gnus.org> (Lars Ingebrigtsen's message of "Thu, 04 Feb 2021 09:34:11 +0100") 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" Xref: news.gmane.io gmane.emacs.bugs:199330 Archived-At: >> C-h v syntax-propertize-function contains this text: >> >> The specified function may call `syntax-ppss' on any position >> before END, but if it calls `syntax-ppss' on some >> position and later modifies the buffer on some earlier position, >> then it is its responsibility to call `syntax-ppss-flush-cache' to flush >> the now obsolete ppss info from the cache. >> >> But (info "(elisp) Syntax Properties") has a different view: >> >> It is allowed to call =E2=80=98syntax-ppss=E2=80=99 on any position befo= re END. >> However, it should not call =E2=80=98syntax-ppss-flush-cache=E2=80=99; s= o, it is not >> allowed to call =E2=80=98syntax-ppss=E2=80=99 on some position and later= modify the >> buffer at an earlier position. >> >> Which is the right one? > > Good question. Stefan M added to the CCs. I think the docstring is the one that's more right (especially since there is a fair number of syntax-propertize-functions which do call =E2=80=98syntax-ppss-flush-cache=E2=80=99). Stefan