From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Michael Albinus Newsgroups: gmane.emacs.devel Subject: Re: vc-state and unregistered Date: Sun, 24 Apr 2016 14:11:50 +0200 Message-ID: <87vb37ury1.fsf@gmx.de> References: <6ok2vyzwf9.fsf@fencepost.gnu.org> <08f70cda-44be-0657-e50a-2b2c80d2c21c@yandex.ru> <87oa9dzgl0.fsf@gmx.de> <87potshczh.fsf@gmx.de> <87bn57otja.fsf_-_@gmx.de> <515b3451-820d-ad50-8c98-d0330a0f4266@yandex.ru> <87lh4arpbg.fsf@gmx.de> <87ega2rodp.fsf@gmx.de> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1461499948 14316 80.91.229.3 (24 Apr 2016 12:12:28 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 24 Apr 2016 12:12:28 +0000 (UTC) Cc: emacs-devel@gnu.org To: Dmitry Gutov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Apr 24 14:12:20 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1auItf-0004Vl-1M for ged-emacs-devel@m.gmane.org; Sun, 24 Apr 2016 14:12:19 +0200 Original-Received: from localhost ([::1]:55165 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1auIte-0007Tc-1E for ged-emacs-devel@m.gmane.org; Sun, 24 Apr 2016 08:12:18 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52078) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1auItL-0007OF-3E for emacs-devel@gnu.org; Sun, 24 Apr 2016 08:12:02 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1auItG-0003Y2-37 for emacs-devel@gnu.org; Sun, 24 Apr 2016 08:11:59 -0400 Original-Received: from mout.gmx.net ([212.227.17.22]:64734) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1auItF-0003Vv-QM for emacs-devel@gnu.org; Sun, 24 Apr 2016 08:11:54 -0400 Original-Received: from detlef.gmx.de ([79.195.30.210]) by mail.gmx.com (mrgmx102) with ESMTPSA (Nemesis) id 0MRjd7-1bInvy2CDZ-00T0A4; Sun, 24 Apr 2016 14:11:51 +0200 In-Reply-To: (Dmitry Gutov's message of "Tue, 19 Apr 2016 11:43:04 +0300") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) X-Provags-ID: V03:K0:1Wa45xNG2rhywEUh5Zhnna3lEOV3xHRAj0DJnSgFA+/yCksvz6P pwFWog4lVkjb69EAwQz7fxMJeDRJHqrrPITTnuwHZVqERz943DIWtsHroCsDv40LqaXO+rw hU1zmqJLnCngx1moIKT3Fl7dbeqYogXtq+Hdls++64Bmd+v6I2IKV4TeeApVHJD8Tr0ofXK Mll/1TrqzMh0A83cXAo/Q== X-UI-Out-Filterresults: notjunk:1;V01:K0:dG38t9rrC/w=:DnW+uQ3ebBk+PrvL68W2r2 l4oRQiaOzMOmwwlPZ7fNyt2xV0WLi3JUvsvPQdUQ3QMwWY+fT++y9GnY6sgVsPSikg6pIU3wc wC6/lu4gEdK1qK8KfvOhAvBYfnfzNvYYZnx7VSQZviQ8dFPrsisJZ2ix6Y81qUB285za8DAb2 Lj2ECdbjW4+koGJ79wHz6oRxNBDHqq+YfUmSyuX2grG+v7Alt9CfNeS6YxyTTKvI/R8TadBmi zeoVd6WeXmEKaqpyO5U4cv2DbukvXuQKf5CmeVI9ZoQcqEjVFeHMYfUovFt5BFdzkMpVFjyI6 4IM291kzMDDqrDeUtmOCCKoOtjKkAFlLZT8cN6WpEKa7DfK+HYERw2SpFkvqa8wAQy3FOhfz7 mMVcss6RZLd8W0G76gTduiFMhkmqCE3SeYIL+gZdQgtKQVOeOArcWQvvp+tUplBF1k8DUAt/y 3nyBO4ILmJcQMpXMlhNl/HiltvEiaboMeAfY21ye5136xHo9vhCanRswWGybSeX2dtX4Wg8+q v9jGG7sQAH800ZGnpB2yn0VFDZA5r+N8V6M5KDOQ2pSC7ZZzspXAPpyJRr/F+RWvCPXc++q+J mQEoHLW6XPKBcT691VnegbDT7pIXZqSD+/GCBQGZcvrC2AZ/yRwMNkMct+MtIU8V7DcFzS9SZ 018Q8HK+1qKRTuCWtYQcrtAIG43ViUwynqBwSfqbgseb61n7WhPzrCL/zE/jJgnO/F2V/HkE+ eOddqdw+0y6tGOOFlKyZKfaUBIoozS9ZUBeCBfegxlm4NjHPASznAQFufcB10xmQg101PQjK X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 212.227.17.22 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:203243 Archived-At: Dmitry Gutov writes: Hi Dmitry, >> IOW: if vc-file-getprop returns nil, we don't know what this >> means. Either "don't know", because the state hasn't been computed >> yet. Or it means "unregistered". > > That could be fixed with using `none' instead, like `vc-backend' > does. Which I've mentioned already. That's the direction I have thought also. But in `vc-state' there is the following comment: ;; Note: in Emacs 22 and older, return of nil meant the file was ;; unregistered. This is potentially a source of ;; backward-compatibility bugs. Since I don't know why nil has been replaced by `unregistered', it might be a problem to use nil again as indication of unregistered files. And we shouldn't change the interface wantonly, I believe. Best regards, Michael.