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: vc-state and unregistered (was: bug#20637: incompatible, undocumented change to vc-working-revision) Date: Mon, 18 Apr 2016 16:55:53 +0200 Message-ID: <87bn57otja.fsf_-_@gmx.de> References: <6ok2vyzwf9.fsf@fencepost.gnu.org> <08f70cda-44be-0657-e50a-2b2c80d2c21c@yandex.ru> <87oa9dzgl0.fsf@gmx.de> <87potshczh.fsf@gmx.de> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1460991385 6927 80.91.229.3 (18 Apr 2016 14:56:25 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 18 Apr 2016 14:56:25 +0000 (UTC) Cc: emacs-devel@gnu.org To: Dmitry Gutov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Apr 18 16:56:18 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 1asAb4-00075M-54 for ged-emacs-devel@m.gmane.org; Mon, 18 Apr 2016 16:56:18 +0200 Original-Received: from localhost ([::1]:39356 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asAb3-00018K-P7 for ged-emacs-devel@m.gmane.org; Mon, 18 Apr 2016 10:56:17 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36400) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asAan-00016k-1K for emacs-devel@gnu.org; Mon, 18 Apr 2016 10:56:01 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1asAai-00022B-25 for emacs-devel@gnu.org; Mon, 18 Apr 2016 10:56:00 -0400 Original-Received: from mout.gmx.net ([212.227.15.15]:50513) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asAah-00020k-Pa for emacs-devel@gnu.org; Mon, 18 Apr 2016 10:55:55 -0400 Original-Received: from detlef.gmx.de ([87.146.63.124]) by mail.gmx.com (mrgmx003) with ESMTPSA (Nemesis) id 0MXZbS-1bDUmi1TT4-00WYJ4; Mon, 18 Apr 2016 16:55:54 +0200 In-Reply-To: (Dmitry Gutov's message of "Thu, 14 Apr 2016 17:20:41 +0300") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) X-Provags-ID: V03:K0:ONtDKneoHEBuN7dxSz25M/qCmmNiJL5mv6AleFlj4gZG8Pv8FCo 6srIi9W+xiLAAVHB9wwVzVsJy7BFyheTyL3kaecD4S4E9ZNqPIFk3dW31DV+m1Te+vEozcw k7fqd84xT8w1725vHj2lk74UTgxsw0+D7jWwZhE5DDw1B6dqNYp7L6XtgJdtqI8VzkxSeeH QrDmeOhW7G9LzC4fkTknA== X-UI-Out-Filterresults: notjunk:1;V01:K0:0M0qRZRdL54=:fg8Ovtso56FuKan7c6DfpU tnumYWRza9B09mqMCduq5AfLg08uaU7V0YMLRGlgm4ZC1GE1opVG/+XdbnA60ld6ORsJR6Y7R Pd8Ub056GhYgw/xpZqNXuAfrwlljcKH4qCU6anVCG7MbtwED4CafH3Xbhbna4Fq+DV1+KWKlj PX9tyZ6vqDNLcUO/NrGkFoiZJzUbAjUMziD+dJF3dsK4p9/pDDILEZWS5DHOoaLYd8v8pEE0h ufr6PMozbPyTtznb1nnbJD8EN6l7yVTCUXiQuEDGa2rNLBPJl8pL1B72JPamq+aJJTn+huLbb QkoD0SSrVunsmkVOBdIUjf9c7T7VOksXWsfvEEBgVdZ3SVrqDxIT5PlozlDkKMeRYYmXoEiqc zFwOIWdU+UEJdWh0Jfkfq4YmMvlg70QKs6JZhpFGPGKLHaUHX4IwiR+cEUQ91F7vghwZ9WOlm 7edezjrn/jYNUf8DMOzNAru0WlBoPGLvTKPL+FnvDqhngEBF+h4s8NCkdDMbM0bn8F7Mh0r5k 3diWJyiSC0wQMW1ftLxbnJ1jp7+wh6qjNct2Set4i8Lwp4O9CL63E7EOn4v4sAQa9wZTsPOeO 5J4u7tyr85Bty1gxn7kBTZJM/iBMkblrwAzAwlxE4XFzkaWATOghpnVV/KGHu57GWGl5WuhHb OHoAiL8okd5KM8qR8c7EK9yF3HzK6u3nilByiP2Yjrae8eb0jlarzPxrg67BKe8r0B62Ypx3d Dj/A/QjhXtpNRdbJpAdwmMBg+GY5TN6pQ6usbNEAc+60Nlo5aTot6cX2vLm9sFL/1p4vNaeZ X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 212.227.15.15 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:203044 Archived-At: Dmitry Gutov writes: Hi Dmitry, > I don't really see a point in returning `unregistered' from > `vc-state'. When would the caller treat it differently from nil? And > returning nil seems like an easier choice, implementation-wise, and > well as a more conservative one from the backward compatibility > perspective. I've checked a little bit more. If we use nil instead of unregistered as result from vc-state, we cannot use file properties for this function anymore. nil is meant as "no property set". This would be a regression. Best regards, Michael.