From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Goldman Subject: Re: question about org-region-active-p Date: Wed, 17 Dec 2008 10:38:41 -0600 Message-ID: <49492B11.2060409@sift.info> References: <494709A4.1000703@sift.info> <9F73C60D-A8B2-4D0B-AFE0-DE210312A021@uva.nl> <4947CC95.60900@sift.info> <494908C5.5050702@sift.info> <531B6C47-6267-4530-ACF8-F2C1548159CE@uva.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LCzQO-00051F-RX for emacs-orgmode@gnu.org; Wed, 17 Dec 2008 11:39:04 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LCzQM-00050n-VA for emacs-orgmode@gnu.org; Wed, 17 Dec 2008 11:39:04 -0500 Received: from [199.232.76.173] (port=55402 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LCzQM-00050k-L3 for emacs-orgmode@gnu.org; Wed, 17 Dec 2008 11:39:02 -0500 Received: from outbound-mail-109.bluehost.com ([69.89.22.9]:53002) by monty-python.gnu.org with smtp (Exim 4.60) (envelope-from ) id 1LCzQM-0005QU-3j for emacs-orgmode@gnu.org; Wed, 17 Dec 2008 11:39:02 -0500 In-Reply-To: <531B6C47-6267-4530-ACF8-F2C1548159CE@uva.nl> 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: Carsten Dominik Cc: emacs-orgmode@gnu.org Carsten Dominik wrote: > 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????? I suspect that this is an aquamacs oddity. Aquamacs (I believe) turns on cua-mode by default and at least in the past, cua-mode was incompatible with transient-mark-mode, and there was even an order dependency (you had to turn cua-mode off before turning transient-mark-mode on). There's a fair amount of discussion about this that one can find by googling. I believe that this has changed, however, since looking at a modern copy of cua-mode.el doesn't seem to reveal any disabling of t-m-m. I'll be honest with you --- I don't even know HOW I turned t-m-m off, much less why! When I explicitly turn it ON in .emacs, all is well. When I run aquamacs without my init files, it's on. But nothing directly in my .emacs turns it off, nor do I have any customizations. This suggests that some library I'm using, somewhere, interferes with it, but as yet I have not found it. Best, r > > - 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 >