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: pcase-if-let? Date: Fri, 30 Mar 2018 03:52:47 +0200 Message-ID: <87d0zm2uts.fsf@web.de> References: <871sg3eqi5.fsf@web.de> <0e8139b0-b59c-1d7e-29db-66170858f8ca@lanl.gov> <87woxvd947.fsf@web.de> <87605filw6.fsf@web.de> <60dc117a-7ee2-42d2-acbc-49dae9ec6ae1@default> <871sg3ijgf.fsf@web.de> <87woxvh2s4.fsf@web.de> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1522374668 4239 195.159.176.226 (30 Mar 2018 01:51:08 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 30 Mar 2018 01:51:08 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Mar 30 03:51:04 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 1f1jC3-000101-B1 for ged-emacs-devel@m.gmane.org; Fri, 30 Mar 2018 03:51:03 +0200 Original-Received: from localhost ([::1]:48892 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f1jE6-0004vt-PO for ged-emacs-devel@m.gmane.org; Thu, 29 Mar 2018 21:53:10 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59746) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f1jDw-0004vF-UI for emacs-devel@gnu.org; Thu, 29 Mar 2018 21:53:01 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f1jDs-0002Xl-0v for emacs-devel@gnu.org; Thu, 29 Mar 2018 21:53:01 -0400 Original-Received: from mout.web.de ([212.227.15.4]:58129) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1f1jDr-0002XT-Mf for emacs-devel@gnu.org; Thu, 29 Mar 2018 21:52:55 -0400 Original-Received: from drachen.dragon ([88.75.99.135]) by smtp.web.de (mrweb002 [213.165.67.108]) with ESMTPSA (Nemesis) id 0LkPRz-1eQSnS0A1b-00cRDH; Fri, 30 Mar 2018 03:52:49 +0200 In-Reply-To: (Stefan Monnier's message of "Thu, 29 Mar 2018 07:59:19 -0400") X-Provags-ID: V03:K0:vxN4ONXjsIwE4H/i9XwpDhxd8+5EVJ9VZp45ce3n34Zs46mFby/ 6Ir+WZww7eAkq+28fvc6LB7Qr+KJZI7UC6lD9yqB2rp6GXS/rl+k/r/EIYmD0MUmUessgjw oil1d76tHMBFIsevlvDARgjgIbNPpTJ0pPIVzJWB1XVW7jX9IpdXsyXXodTl5V+ZIFApcxW SJ5lY2AGMWr5RF5a6xTcQ== X-UI-Out-Filterresults: notjunk:1;V01:K0:SDaX8z0Pm0Q=:YgB7BucgWainz96mMMA+P9 y1Mc9Z2WRDxAYqY2Hw9ZIMRQpN5xjWGdCZH7O9nN3q3n8eYQ/3pzK8RFkgva0Ii9lNaWKdSIf jKwQMrt+dX77Phte4WkmgrC6F3/+PaDFGYC2ifSOThLIr5sWAOc9sJa9M7SfleFuamtwQVzhG gz4i9gA+xTsV8stNBosHzo2rQUJ2nMWIIapWLXsZWHJLPhztkrTwg8LewE4cODbjtnsfAcVUX Z/HjAJAqt1g6hO+s87G6R+ICSM7r72UplTyprycVrO7yy5J7PP9ip6qBXRLhKxdAZ8oBzS/z5 cn4zjMX5Bj8Dn34noZQAFx3/dr0YRk4Bv4HKA3PQA+xsgUZjia0+G3iXYMuVl03ISANB38xKf xaIcAhztUBIUA/BaYiaF1qY++WrtT2euxoRHI2x7IzhLWt4BvOJFKhNQVcyzcR544jfWJtj4O vHVdsfOXklpluC6FJgTKSPdeXDyrAIXBgVODIf2YYVYLbolu65f+syG/nLlVEEVvxOnO2Ncpe HYnxYHFemt2cXte2jKZaWWVoAvtULfjcIYXu+SZ4Ll3959rokoLNbD7onxGLfRifX+dOwX9A3 0eK6isfpXJWU5X8RoXJLWi0vNxp7zFJHH5RAohxPdjQNYtWHyWvWZ32F7u+CqH06rhg6d7UXk jtnUk8/203wfSKSBUVIh2Vl28IFK1tYYkYrLimDgrdyDnYQE4gaBwfixfoUYbx7khpPgim9RE VeH6wNbwFMCpiUvi5xmV4YvhVJ4QkbRxO9n+DqD2AWLCqtSDzzTvXpI2QfFxytJOEtLaUqDN X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 212.227.15.4 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:224170 Archived-At: Stefan Monnier writes: > Oh, right we need the `let*` kind of scoping. I call it `if-matching' for now (like in "if [given clauses are] matching [do this else that]"). Apropos "let*": I realized it's semantically absolutely the same as `pcase-let*' but executing an else branch when not all patterns match (what pcase-let* silently assumes). So I guess I should rather look how these are implemented. Michael.