From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Drew Adams" Newsgroups: gmane.emacs.bugs Subject: bug#8657: 24.0.50; Emacs code that seems to use `*-single-char-property-change' incorrectly Date: Wed, 11 May 2011 13:54:57 -0700 Message-ID: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1305147373 25208 80.91.229.12 (11 May 2011 20:56:13 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Wed, 11 May 2011 20:56:13 +0000 (UTC) To: 8657@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed May 11 22:56:10 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1QKGRz-0004Cq-FZ for geb-bug-gnu-emacs@m.gmane.org; Wed, 11 May 2011 22:56:07 +0200 Original-Received: from localhost ([::1]:54846 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QKGRz-0007rB-2z for geb-bug-gnu-emacs@m.gmane.org; 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Wed, 11 May 2011 15:54:54 -0500 Original-Received: from dradamslap1 (/130.35.178.194) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 11 May 2011 13:54:54 -0700 X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcwQHa+46k3HD6rXT+io0xz826z1Iw== X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6090 X-Source-IP: rtcsinet22.oracle.com [66.248.204.30] X-CT-RefId: str=0001.0A090203.4DCAF7A7.0034:SCFSTAT5015188,ss=1,fgs=0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Wed, 11 May 2011 16:56:02 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:46398 Archived-At: `(next|previous)-single-char-property-change' behaves differently in a couple of ways from `(next|previous)-single-property-change', besides the difference of overlay vs text properties. In particular, IIUC, the return value can never be nil. Yet I see code such as this: gnus-summary-show-thread: (or (next-single-char-property-change end 'invisible) (point-max)) comint-next-prompt: (setq pos (next-single-char-property-change pos 'field)) (cond (or (null pos)... Isn't this incorrect? In GNU Emacs 24.0.50.1 (i386-mingw-nt5.1.2600) of 2011-05-10 on 3249CTO Windowing system distributor `Microsoft Corp.', version 5.1.2600 configured using `configure --with-gcc (4.5) --no-opt --cflags -Ic:/build/include'