From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.devel Subject: Re: if-let/if-let*/and-let/.. Date: Sat, 10 Mar 2018 17:07:58 +0100 Message-ID: <87o9jv6hi9.fsf@web.de> References: <87sh9t4yrj.fsf@web.de> <877er5e9vx.fsf@web.de> <874llx9riy.fsf@web.de> <87r2oxtff3.fsf@web.de> <87a7vlgqzu.fsf@web.de> <83vae9qf0f.fsf@gnu.org> <87h8psx98a.fsf@web.de> <834llqptbj.fsf@gnu.org> <87d10d5lfl.fsf@web.de> <831sgtw9gi.fsf@gnu.org> <877eql5j1r.fsf@web.de> <83woylushg.fsf@gnu.org> <87y3j143b3.fsf@web.de> <83vae5un1s.fsf@gnu.org> <87k1uklwf7.fsf@web.de> <83muzguzn2.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1520698007 26801 195.159.176.226 (10 Mar 2018 16:06:47 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 10 Mar 2018 16:06:47 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.91 (gnu/linux) Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Mar 10 17:06:43 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 1euh19-0006qe-DS for ged-emacs-devel@m.gmane.org; Sat, 10 Mar 2018 17:06:43 +0100 Original-Received: from localhost ([::1]:51188 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1euh3A-0006e0-Bj for ged-emacs-devel@m.gmane.org; Sat, 10 Mar 2018 11:08:48 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60794) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1euh2Z-0006dl-VN for emacs-devel@gnu.org; Sat, 10 Mar 2018 11:08:13 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1euh2Z-0003GZ-4t for emacs-devel@gnu.org; Sat, 10 Mar 2018 11:08:11 -0500 Original-Received: from mout.web.de ([212.227.17.11]:58677) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1euh2V-0003Fd-B8; Sat, 10 Mar 2018 11:08:07 -0500 Original-Received: from drachen.dragon ([188.99.169.170]) by smtp.web.de (mrweb103 [213.165.67.124]) with ESMTPSA (Nemesis) id 0MYNzx-1f8HwH0oVd-00V85H; Sat, 10 Mar 2018 17:08:00 +0100 In-Reply-To: <83muzguzn2.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 10 Mar 2018 10:02:25 +0200") X-Provags-ID: V03:K0:+y7a/KJYFeB1DFcwAGkM6FFKUSHLliEXb0wMFXHxxQt1gcIlVGg KwMz2sAke7f6Av05s+Bpr8M9wowB7xNnkp/lWuxSGL7LRZjA65DaRVNwcHwtIcVHwBxu0iG SLKGZxAw382+6O54DwKiQjAYAuxp9aFzqFIRWVmVZwFtoHNSqO/EQKDumZGJyZhSJ63MVpN J5/zZSC68qM9KMLLZ8SzA== X-UI-Out-Filterresults: notjunk:1;V01:K0:lD4CkK45RsU=:c6ztQcdLYrt5A0FHXnzOXG J4hZ+Eg/9g/D3pYoIKHTFf/aiA7mQaLKOJCIvHUcTIz/tcnvwW4d/5QFkTuOeLzoTvZXHxv0n y6eMRfDOZw66+DmIoeC85OADsM6dum0otkWGpY1+5ZYkMTlBOJRQ9I8lrL5C85fYWhVwHSvW3 k851d0YGnINsOav2Aib4FU22p5xYEF9UQuhoai7veOUcJXlaL1IkdaTVuJ+X04/K8oNnhl3mq bPEj+L33XTF3d8yz8e4i0vjkJgMr5JwtnfYwMSBwoP2vdvM0z5Lno5kcYvLqqkXG6cnE48mSU M2W5PDcuEJPdi7KPJ5VR1+Hnp58g53zewoWAQrFNvsnjNaiQ+zihRJBqYbXOshB6ITwa60mpO KD9eBJkdFcpM2G77eOBcg61F+xtmxnXfBUggg4ABMESnvMAJZ2iLXCt5d2kI+l/XJyWvUnV+e a+i0TSgdNAhAHomg/xi0ijFiko5KVJN64I0uF574Yq7SuyeYpJxf/V8rG6il1OlHgZnlasiJX kAOF7VQb1C9LP1kBKQSxmUKueq/PpOBzmKJ80GDHd6McpXmD2CvyNDrAeYWH98KdjBrkUNwYw ENknVGCZPHxtHAT9elmJDnW5NQOyyyNNL5SC0r/rs6hYNzrERucKGpZG/PxAebWwqPh5roHQb LVK5+ebJhonEnOdw1Xm3qs++m0bue/aFrvGnfBA01VBts25FH7BN5C94cYYFsXqCbe3HXzxAW LTU6l94CpWMwhR8ql8Nf75HC96ntL7oz6C2sI5pf/rvjxoX58lK9+UZp3M2nJd5ZV+sqytyL X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 212.227.17.11 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:223582 Archived-At: Eli Zaretskii writes: > And it probably did make sense when the foo-let* were introduced. > It's just in retrospect that it doesn't. No, AFAIR it never made sense. The switch to new names, and declaring the old names obsolete, was done to avoid making a backward incompatible change. > > If you don't object to unite the two APIs in master, I'm ok with that > > decision. However, I then would like to change the NEWS entry in the > > release branch so that it doesn't mention the new foo-let* names, > > because these will be only synonyms for foo-let in subsequent releases, > > and letting NEWS introduce them now as something different would only > > cause confusion. > > Fine with me, thanks. Oh, I see that we still have a little problem with that: In emacs-26, we currently only have `and-let*', no `and-let' is defined - so what we present in NEWS would still be inconsistent/confusing - unless we also keep `and-let*' secret for now and only tell users that `if-let' and `when-let' have gotten extended semantics. That would not be problematic however, since and-let/and-let* is only a special case of when-let, the main improvement was the extension of the semantics of the variable binding list. Michael.