From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: =?UTF-8?Q?Cl=c3=a9ment_Pit--Claudel?= Newsgroups: gmane.emacs.devel Subject: Re: Redisplay hook Date: Tue, 5 Jul 2016 19:47:57 -0400 Message-ID: <577C472D.2060609@gmail.com> References: <577814F4.8060500@gmail.com> <8360sns8nj.fsf@gnu.org> <57789637.8020204@gmail.com> <83twg7qi5t.fsf@gnu.org> <5779A83D.6020201@gmail.com> <83twg6p1kd.fsf@gnu.org> <577A89CB.7050502@gmail.com> <7B54BCE8-0822-4BFF-A6B4-6A6284814CC8@gmail.com> <577ACE62.8030504@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="NsBlc15CmRQOGBKevHRVCmiOCC2MTN2Wa" X-Trace: ger.gmane.org 1467762545 25174 80.91.229.3 (5 Jul 2016 23:49:05 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 5 Jul 2016 23:49:05 +0000 (UTC) Cc: eliz@gnu.org, rswgnu@gmail.com, monnier@iro.umontreal.ca, emacs-devel@gnu.org To: rms@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Jul 06 01:48:57 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 1bKa5I-0003MN-Rj for ged-emacs-devel@m.gmane.org; Wed, 06 Jul 2016 01:48:57 +0200 Original-Received: from localhost ([::1]:58593 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKa5I-0008PG-5w for ged-emacs-devel@m.gmane.org; Tue, 05 Jul 2016 19:48:56 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47289) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKa4f-0008Ou-15 for emacs-devel@gnu.org; Tue, 05 Jul 2016 19:48:21 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bKa4d-0005aB-43 for emacs-devel@gnu.org; Tue, 05 Jul 2016 19:48:16 -0400 Original-Received: from mout.kundenserver.de ([217.72.192.75]:58373) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKa4T-0005Z1-O0; Tue, 05 Jul 2016 19:48:05 -0400 Original-Received: from [18.189.1.110] ([18.189.1.110]) by mrelayeu.kundenserver.de (mreue104) with ESMTPSA (Nemesis) id 0MgNZW-1axyTf2Jfi-00Nijc; Wed, 06 Jul 2016 01:48:01 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 In-Reply-To: X-Provags-ID: V03:K0:Y8sBMU8tGDV56aZsg537WFO0tpyEKgEHJCkCIpg049IYD9byhCD z1QcutosLeyfxDNPL7DeTkIrQqjsxCWSfhyfsmB77yeZGDDLnoaoU5xdXzJvCZ0V/1AgtWj J+KKtsgeF+A2oGpau9UM7UE3WfweewWlWqlW7jQlT/ZXV06cQRBdJotsC6xwYor4EMuo9Vw ui+jD8r6gUvWN64G6I5QA== X-UI-Out-Filterresults: notjunk:1;V01:K0:t8vhbm0H4io=:rJYMVf2qlEzHrwfrad28yx uGSsr6vpKMvocztZ2lA1WtDqPnh74owZ99kagOUVy4JgctWH8Y/BIvNCMQqxMfgy+YCOeSUpc 9GuAXQ09ozzvqZwOZFa0sg9LkxB4GRq2EWqSYj/9m4zh6HXTAdDZw+mAhqp18wju2YUDQ4/rQ TccBqOE+3R3jXQ/E6UusKSUFEAccKZPiE1i0Wi+YXdvC0UQC5pYrVbYzG4Mfyft2bDbGnPaVB JbKUqxpleZ4uoAsxvQPfPP2UpqTJ0SMy3FefWPa5RlJm3tPDHz9RZwIAwqxb2TxcU8jP5wMQa 6nDIumtYSudq9G8IbQm6plyrbBdICD76aie1yB4ZqFAMD03WYkJIXhoUCUA9o7HpQ++oAlwKE ouzZMTdkWR0nPpuCEztLoh5zd4RBlB8lw7CtNItKhUSQqw9GdRvrzvd+HAepCvUY/VyZf1xN/ J1xBf9QAN03+XefPaIaGULzgxzutuRXaVxe8r4VfebbvDDBv0IZEtfGL/vgtME6NX7n1B9OHz UQNOlU/PAo/dVV766BHPFYXn59J1+jF4VJxcJWMc9ocnizLr5FB2dOH9wCIUiMpe8ONT+bHhK eqYroiTMHzNmy9v+D0mfF+GRxCgvVB2lXOALcAvdAekq75amyefFYUSJbjrTP9RqKEBs4Y1k9 cjf2O2A28zMvjOwcUiGUKRtl/WNyghh2SgGRQVCp+XBZpHD7MI7vODxgbBRnKApNJwWc= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 217.72.192.75 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:205220 Archived-At: This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --NsBlc15CmRQOGBKevHRVCmiOCC2MTN2Wa Content-Type: multipart/mixed; boundary="Ipvuc4a2Rv93v9gg5E8tJTlGi3bAjDN7c" From: =?UTF-8?Q?Cl=c3=a9ment_Pit--Claudel?= To: rms@gnu.org Cc: rswgnu@gmail.com, eliz@gnu.org, monnier@iro.umontreal.ca, emacs-devel@gnu.org Message-ID: <577C472D.2060609@gmail.com> Subject: Re: Redisplay hook References: <577814F4.8060500@gmail.com> <8360sns8nj.fsf@gnu.org> <57789637.8020204@gmail.com> <83twg7qi5t.fsf@gnu.org> <5779A83D.6020201@gmail.com> <83twg6p1kd.fsf@gnu.org> <577A89CB.7050502@gmail.com> <7B54BCE8-0822-4BFF-A6B4-6A6284814CC8@gmail.com> <577ACE62.8030504@gmail.com> In-Reply-To: --Ipvuc4a2Rv93v9gg5E8tJTlGi3bAjDN7c Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2016-07-05 18:59, Richard Stallman wrote: > I think it would be safer to add a feature to make a screenshot > whenever Emacs redisplays than to add a hook that might do anything wha= tever. I think a feature to make Emacs capture a screenshot of itself would be v= ery nice (and hey, in the future, it could even be SVG instead pixel-base= d! That would be wonderful).=20 And yet I'm not sure whether adding a flag to capture a screenshot after = each redisplay cycle is the way to go. People often surprise me with the = stuff they come up with Emacs, so adding a general post-redisplay-hook ma= y enable plenty of things that we're not thinking about (and at worst, pe= ople won't use it much, just like the currently existing pre-redisplay-fu= nction). Plus, it's not obvious that we could stretch such a capture-after-redispl= ay flag to cover all screencasting use cases. For example, since capturin= g and saving a screenshot takes time, we'd probably want to let Lisp code= decide for each redisplay cycle whether to take a screenshot or not; it = could decide this based on time elapsed since the last screenshot, or oth= er factors. What do you think? 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