From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#11303: Whitespace mode causes auto-save to malfunction Date: Fri, 16 Jul 2021 13:55:44 +0200 Message-ID: <87r1fya2wv.fsf@gnus.org> References: <1335001776.57750.YahooMailClassic@web121502.mail.ne1.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="10008"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 11303@debbugs.gnu.org To: Kelly Dean Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jul 16 13:56:15 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 1m4MRz-0002OT-07 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 16 Jul 2021 13:56:15 +0200 Original-Received: from localhost ([::1]:48366 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m4MRx-0007Mr-7q for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 16 Jul 2021 07:56:13 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38822) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m4MRm-0007ML-Mz for bug-gnu-emacs@gnu.org; Fri, 16 Jul 2021 07:56:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:39110) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1m4MRm-0002e1-Fm for bug-gnu-emacs@gnu.org; Fri, 16 Jul 2021 07:56:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1m4MRm-0000Zw-GQ for bug-gnu-emacs@gnu.org; Fri, 16 Jul 2021 07:56:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 16 Jul 2021 11:56:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 11303 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: confirmed Original-Received: via spool by 11303-submit@debbugs.gnu.org id=B11303.16264365572213 (code B ref 11303); Fri, 16 Jul 2021 11:56:02 +0000 Original-Received: (at 11303) by debbugs.gnu.org; 16 Jul 2021 11:55:57 +0000 Original-Received: from localhost ([127.0.0.1]:50656 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1m4MRh-0000Zc-2D for submit@debbugs.gnu.org; Fri, 16 Jul 2021 07:55:57 -0400 Original-Received: from quimby.gnus.org ([95.216.78.240]:40298) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1m4MRe-0000ZO-Lr for 11303@debbugs.gnu.org; Fri, 16 Jul 2021 07:55:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=yQAvD7tlGyrIHBo2uK9x0BiHsmgXj/RgZZKsmbfiMmE=; b=Xfnb9kBm6PZGcM1mKL273Rogss Rh2aQxOIf5FMowQwsE6CnV1tuNeNWxhP4ti/zcli/wLsppEfS1hvskXwUN3Q9W95yesut2vIh0quX WizgqHpvWJXT4QhNNW3jOe5I3qRiVWAQFvsV7jaGTS7Gz5IfaNgLyr2o2j1JQ/8r6bLg=; Original-Received: from cm-84.212.220.105.getinternet.no ([84.212.220.105] helo=elva) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m4MRV-0003yp-M1; Fri, 16 Jul 2021 13:55:48 +0200 X-Now-Playing: Voiski's _Fabric 94: Steffi_: "Sounds of Distance" In-Reply-To: <1335001776.57750.YahooMailClassic@web121502.mail.ne1.yahoo.com> (Kelly Dean's message of "Sat, 21 Apr 2012 02:49:36 -0700 (PDT)") 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:210085 Archived-At: Kelly Dean writes: > Start Emacs with no options. > Open a file, press space, wait for the timeout, press C-g, and wait > for the timeout again. Notice that Emacs does write the auto-save file > again, even though the buffer hasn't changed since the last > auto-save. This is not the correct behavior. This problem is still present in Emacs 28. Poking around a bit at this, it seems that it's the call to (jit-lock-refontify (point-min) (point-max)) that makes `M-x do-auto-save' auto-save again (even if nothing has changed except the text properties in the buffer). I.e., doing (put-text-property 1 3 'face 'bold) will make the buffer eligible for auto-saving again, even if putting those text properties into the buffer doesn't switch from unmodified to modified. That's pretty inconsistent behaviour, at least? I'm guessing this stems from text properties upping the BUF_MODIFF, but not changing the buffer modification status. Does this sound like the correct analysis? If so, what can we do about it? (`with-silent-modifications' doesn't seem to have any effect here.) -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no