From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Fill column indicator functionality Date: Sat, 06 Apr 2019 15:53:06 +0300 Message-ID: <83mul39txp.fsf@gnu.org> References: <20190405103614.oivi4mtlnklldli4@Ergus> <835zrsd670.fsf@gnu.org> <20190405150404.bm2d6wjtivwyesek@Ergus> <83r2agbhwv.fsf@gnu.org> <20190405173010.snavjhxrmmufwp54@Ergus> <83h8bcb7ce.fsf@gnu.org> <20190405200319.jfwt7lgevas556id@Ergus> <87zhp4w42x.fsf@telefonica.net> <835zrrbpbm.fsf@gnu.org> <20190406110652.sehoccflrntd4yod@Ergus> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="123299"; mail-complaints-to="usenet@blaine.gmane.org" Cc: ofv@wanadoo.es, emacs-devel@gnu.org To: Ergus Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Apr 06 14:53:59 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hCkpa-000Vwy-MP for ged-emacs-devel@m.gmane.org; Sat, 06 Apr 2019 14:53:58 +0200 Original-Received: from localhost ([127.0.0.1]:54691 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hCkpZ-0002Ej-IL for ged-emacs-devel@m.gmane.org; Sat, 06 Apr 2019 08:53:57 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:34074) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hCkow-0002Eb-1L for emacs-devel@gnu.org; Sat, 06 Apr 2019 08:53:18 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:39971) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hCkov-0003fW-Ge; Sat, 06 Apr 2019 08:53:17 -0400 Original-Received: from [176.228.60.248] (port=4306 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1hCkou-0002Ee-QG; Sat, 06 Apr 2019 08:53:17 -0400 In-reply-to: <20190406110652.sehoccflrntd4yod@Ergus> (message from Ergus on Sat, 6 Apr 2019 13:06:52 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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:235029 Archived-At: > Date: Sat, 6 Apr 2019 13:06:52 +0200 > From: Ergus > Cc: Óscar Fuentes , emacs-devel@gnu.org > > >Hmm... why do we need those DEFSYMs? I don't think the Qfoo symbols > >are ever used in C, are they? Do the problems go away if you remove > >the DEFSYMS? > > > Hi Eli: > > I just followed the same schema than the display-line-numbers variables > some lines before. (and many other variables) We should only need DEFSYM if we need to reference Qfoo in C code. > What are actually the Qfoo symbols for? I thought they where for make > buffer local variables? > > Actually the question is: Why are we not using those? instead of > Vdisplay_fill_column_indicator_character? The Vfoo is the variable, the Qfoo is its symbol. You need the latter if you have to call a function that accepts symbols, like specbind. It's the same as with foo vs 'foo in Lisp.