From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: [Emacs-diffs] master 938d252 4/4: Make regex matching reentrant; update syntax during match Date: Tue, 19 Jun 2018 11:26:31 -0700 Organization: UCLA Computer Science Department Message-ID: <9a00633f-6bf3-86e5-ea03-7a92e53ea70c@cs.ucla.edu> References: <20180616204650.8423.73499@vcs0.savannah.gnu.org> <20180616204653.86AFC203CB@vcs0.savannah.gnu.org> <04e89d2beffedcc102b811863910c1ec.squirrel@dancol.org> <20180618115941.4f22a9d3@jabberwock.cb.piermont.com> <1de38eca2662563e9e08006c88a6d2e5.squirrel@dancol.org> <20180619094005.11465a87@jabberwock.cb.piermont.com> <20180619094442.41287e4b@jabberwock.cb.piermont.com> <20180619103002.4f000018@jabberwock.cb.piermont.com> <20180619103325.7d79befb@jabberwock.cb.piermont.com> <9a5f3904-8298-b5e3-cd97-b525f602cc63@dancol.org> <20180619113729.3d1a4c0b@jabberwock.cb.piermont.com> <68752b66-75d2-a732-6ce2-3d8a13b7ff37@cs.ucla.edu> <52b0e14e-8358-0337-ee66-e76795736799@cs.ucla.edu> <43853f30c2daec6b5f116396f07d640d.squirrel@dancol.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1529432717 28524 195.159.176.226 (19 Jun 2018 18:25:17 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 19 Jun 2018 18:25:17 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 Cc: emacs-devel@gnu.org, Stefan Monnier , "Perry E. Metzger" To: Daniel Colascione Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Jun 19 20:25:13 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fVLJX-0007HE-00 for ged-emacs-devel@m.gmane.org; Tue, 19 Jun 2018 20:25:11 +0200 Original-Received: from localhost ([::1]:44365 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fVLLe-0005R5-5D for ged-emacs-devel@m.gmane.org; Tue, 19 Jun 2018 14:27:22 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:42541) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fVLKv-0005R0-LG for emacs-devel@gnu.org; Tue, 19 Jun 2018 14:26:38 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fVLKr-0006Hs-Mu for emacs-devel@gnu.org; Tue, 19 Jun 2018 14:26:37 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:37394) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fVLKr-0006H2-D5 for emacs-devel@gnu.org; Tue, 19 Jun 2018 14:26:33 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 31AD8160DFC; Tue, 19 Jun 2018 11:26:32 -0700 (PDT) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id TXHStleOyzri; Tue, 19 Jun 2018 11:26:31 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 6C4A6160DFE; Tue, 19 Jun 2018 11:26:31 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id t0s_hQ2vFsNu; Tue, 19 Jun 2018 11:26:31 -0700 (PDT) Original-Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 500D7160DFD; Tue, 19 Jun 2018 11:26:31 -0700 (PDT) Openpgp: preference=signencrypt Autocrypt: addr=eggert@cs.ucla.edu; prefer-encrypt=mutual; keydata= xsFNBEyAcmQBEADAAyH2xoTu7ppG5D3a8FMZEon74dCvc4+q1XA2J2tBy2pwaTqfhpxxdGA9 Jj50UJ3PD4bSUEgN8tLZ0san47l5XTAFLi2456ciSl5m8sKaHlGdt9XmAAtmXqeZVIYX/UFS 96fDzf4xhEmm/y7LbYEPQdUdxu47xA5KhTYp5bltF3WYDz1Ygd7gx07Auwp7iw7eNvnoDTAl KAl8KYDZzbDNCQGEbpY3efZIvPdeI+FWQN4W+kghy+P6au6PrIIhYraeua7XDdb2LS1en3Ss mE3QjqfRqI/A2ue8JMwsvXe/WK38Ezs6x74iTaqI3AFH6ilAhDqpMnd/msSESNFt76DiO1ZK QMr9amVPknjfPmJISqdhgB1DlEdw34sROf6V8mZw0xfqT6PKE46LcFefzs0kbg4GORf8vjG2 Sf1tk5eU8MBiyN/bZ03bKNjNYMpODDQQwuP84kYLkX2wBxxMAhBxwbDVZudzxDZJ1C2VXujC OJVxq2kljBM9ETYuUGqd75AW2LXrLw6+MuIsHFAYAgRr7+KcwDgBAfwhPBYX34nSSiHlmLC+ KaHLeCLF5ZI2vKm3HEeCTtlOg7xZEONgwzL+fdKo+D6SoC8RRxJKs8a3sVfI4t6CnrQzvJbB n6gxdgCu5i29J1QCYrCYvql2UyFPAK+do99/1jOXT4m2836j1wARAQABzSBQYXVsIEVnZ2Vy dCA8ZWdnZXJ0QGNzLnVjbGEuZWR1PsLBfgQTAQIAKAUCTIByZAIbAwUJEswDAAYLCQgHAwIG FQgCCQoLBBYCAwECH In-Reply-To: <43853f30c2daec6b5f116396f07d640d.squirrel@dancol.org> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 131.179.128.68 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:226529 Archived-At: On 06/19/2018 11:16 AM, Daniel Colascione wrote: > Do you think the glib regex maintainers would be amenable to adding 1) > external iterator support (that we'd use to deal with the gap), and 2) > user-pluggable callouts (which we'd use to implement Emacs-specific > assertions)? I'd rather not have a huge pile of ifdefs the way we do now. > I'd much prefer using maintained extension points. We could add those to Gnulib. I think we could also add them to Glibc eventually, though that would require more consensus. The main question to my mind is whether we'd want the extension points to be visible to Glibc users. If not, most likely we'd need some ifdefs, though I expect we wouldn't need a huge pile of them (as glibc code can assume GCC optimization).