From mboxrd@z Thu Jan 1 00:00:00 1970 From: Carsten Dominik Subject: Re: question about org-region-active-p Date: Wed, 17 Dec 2008 17:29:23 +0100 Message-ID: <531B6C47-6267-4530-ACF8-F2C1548159CE@uva.nl> References: <494709A4.1000703@sift.info> <9F73C60D-A8B2-4D0B-AFE0-DE210312A021@uva.nl> <4947CC95.60900@sift.info> <494908C5.5050702@sift.info> Mime-Version: 1.0 (Apple Message framework v929.2) Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Return-path: Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LCzH8-0004Dq-5A for emacs-orgmode@gnu.org; Wed, 17 Dec 2008 11:29:30 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LCzH7-0004D6-9m for emacs-orgmode@gnu.org; Wed, 17 Dec 2008 11:29:29 -0500 Received: from [199.232.76.173] (port=54369 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LCzH6-0004Cl-Tz for emacs-orgmode@gnu.org; Wed, 17 Dec 2008 11:29:29 -0500 Received: from mail-ew0-f13.google.com ([209.85.219.13]:54457) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LCzH6-0002HN-8q for emacs-orgmode@gnu.org; Wed, 17 Dec 2008 11:29:28 -0500 Received: by ewy6 with SMTP id 6so4553462ewy.18 for ; Wed, 17 Dec 2008 08:29:26 -0800 (PST) In-Reply-To: <494908C5.5050702@sift.info> List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: Robert Goldman Cc: emacs-orgmode@gnu.org Dear Robert, also region-active-p requires transient-mark-mode to be active, if you look at the definition of the region-active-p function, you will see that. transient-mark-mode is on by default in Emacs. Why did you turn it *off* in the first place????? - Carsten On Dec 17, 2008, at 3:12 PM, Robert Goldman wrote: > Carsten Dominik wrote: >> Hi Robert, >> >> no, I do not think this would make sense, to step out with >> an error, because all the commands that need a region will >> also work without one. This is how regions work in Emacs. >> >> If you find places in the documentation where this could >> be made clearer, let me know. > > Thank you Carsten for the response. I am still inclined to think that > this case is one where the user should get some warning because it's > in > that bad class of bug-like situations where code quietly does > something > that the user does not expect and that contradicts the documentation. > > On the other hand, I can't see where one would raise an error. It's > not > an error to call org-region-active-p without transient-mark-mode; > indeed > some libraries turn this on and off, and the user is entitled not to > use it. > > The call to export isn't right, because the export command does not > give > the system any opportunity to infer whether the user intended to > operate > on a region or on the whole. So there's no way to tell that the > user's > expectations are going to be violated. > > The loading of org-mode isn't the right place, either, since the vast > majority of org-mode works just fine with t-m-m turned off. > > I'm inclined to think that the answer is simply that one shouldn't > turn > transient-mark-mode off, ever. This works for me, but I hate to think > of the next person coming along to fall into this same trap, from > which > the only means of escape is to inspect the source code and use the > debugger. > > I would suggest a modification to the manual and will submit one, but > need clarification about one issue: the use of t-m-m seems to be a > fallback for older emacsen that don't have region-active-p. I have > such > an emacs, so I don't know --- does this mean that on newer emacsen > org-region-active-p will work even without transient-mark-mode? > > Best, > Robert