From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Pip Cet Newsgroups: gmane.emacs.bugs Subject: bug#36190: 27.0.50; `put-text-property' etc. with buffer argument calls current buffer's `after-change-functions' Date: Thu, 13 Jun 2019 13:48:40 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="55195"; mail-complaints-to="usenet@blaine.gmane.org" To: 36190@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Jun 13 17:25:08 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hbRb5-000Dyq-9F for geb-bug-gnu-emacs@m.gmane.org; Thu, 13 Jun 2019 17:25:03 +0200 Original-Received: from localhost ([::1]:40874 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hbRb3-0000uE-KJ for geb-bug-gnu-emacs@m.gmane.org; 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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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:160499 Archived-At: In emacs -Q, evaluating: (let ((buffer1 (generate-new-buffer "A")) (buffer2 (generate-new-buffer "B"))) (with-current-buffer buffer2 (insert "BBB")) (with-current-buffer buffer1 (add-hook 'after-change-functions (lambda (beg end len) (message "%S %S %S" beg end len)) nil t) (put-text-property 1 4 'read-only t buffer2))) results in a "1 4 3" message. I would have expected no message, as buffer2 was modified and buffer1, whose after-change-functions I'd set, wasn't. I've looked at the code, and it appears no particular provisions are being made to make sure we switch to the modified buffer before calling signal_after_change(). As far as I can tell, this makes `put-text-property' with a buffer argument pretty useless. Am I missing something? Is this expected behavior somehow?