From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: joakim@verona.se Newsgroups: gmane.emacs.devel Subject: Re: more url-utils? Date: Thu, 19 May 2011 16:11:18 +0200 Message-ID: References: <87fwogaxzb.fsf@stupidchicken.com> <87mxilezg8.fsf@lifelogs.com> <87boz0eov8.fsf@lifelogs.com> <87mxikrulm.fsf@lifelogs.com> <871uzw5asv.fsf@lifelogs.com> <87boyzcv0o.fsf@lifelogs.com> <87k4dnassv.fsf@lifelogs.com> <878vu23lpe.fsf@lifelogs.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1305814296 25637 80.91.229.12 (19 May 2011 14:11:36 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 19 May 2011 14:11:36 +0000 (UTC) Cc: emacs-devel@gnu.org To: Ted Zlatanov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu May 19 16:11:32 2011 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1QN3wp-0002p2-Rz for ged-emacs-devel@m.gmane.org; Thu, 19 May 2011 16:11:32 +0200 Original-Received: from localhost ([::1]:41925 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QN3wn-0004mB-SP for ged-emacs-devel@m.gmane.org; Thu, 19 May 2011 10:11:29 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:52925) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QN3wl-0004lu-Qg for emacs-devel@gnu.org; Thu, 19 May 2011 10:11:28 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QN3wk-0004j9-5T for emacs-devel@gnu.org; Thu, 19 May 2011 10:11:27 -0400 Original-Received: from batman.blixtvik.net ([87.96.254.3]:57854) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QN3wj-0004ht-Vv for emacs-devel@gnu.org; Thu, 19 May 2011 10:11:26 -0400 Original-Received: from www.verona.se (3-208-96-87.cust.blixtvik.se [87.96.208.3]) by batman.blixtvik.net (Postfix) with ESMTP id 86BEA7F9806; Thu, 19 May 2011 16:11:18 +0200 (CEST) Original-Received: from chopper (unknown [192.168.201.6]) by www.verona.se (Postfix) with ESMTP id 61EB9A8A029; Thu, 19 May 2011 16:11:18 +0200 (CEST) In-Reply-To: <878vu23lpe.fsf@lifelogs.com> (Ted Zlatanov's message of "Thu, 19 May 2011 07:43:09 -0500") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 87.96.254.3 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:139517 Archived-At: Ted Zlatanov writes: > On Thu, 19 May 2011 08:53:22 -0300 Stefan Monnier wrote: > >>> OK. But if the status is nil we couldn't get any data so there are no >>> URL properties. So we can have just one callback parameter "url-info" >>> which is nil if the request failed and an alist if it worked. > > SM> I think that a boolean status is not sufficient. E.g. in case of > SM> failure, we want to have some information about why (e.g. an error > SM> message). > > ..but we don't want to throw an error. Hrm. How about "url-info" is > three possible types: > > 1) nil = failed, no information available (should happen only if there's > no handler for the URL's protocol) > > 2) atom (string or symbol) = failed, information is the string or the > symbol's properties > > 3) alist = success This seems ok from my user-viewpoint. OTOH I wouldnt mind handling protocol errors with exceptions. Its what one does in many other languages anyway. BTW thanks everyone for driving this forward from my initial inadequate proposal! > > Ted > -- Joakim Verona