From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: New macro `seq-let' in seq.el Date: Tue, 05 May 2015 15:56:57 -0400 Message-ID: References: <87y4l8fbbc.fsf@petton.fr> <87h9rqlvlq.fsf@petton.fr> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1430855872 16748 80.91.229.3 (5 May 2015 19:57:52 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 5 May 2015 19:57:52 +0000 (UTC) Cc: Bozhidar Batsov , emacs-devel To: Nicolas Petton Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue May 05 21:57:41 2015 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 1YpiyK-0004e3-SR for ged-emacs-devel@m.gmane.org; Tue, 05 May 2015 21:57:41 +0200 Original-Received: from localhost ([::1]:41375 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YpiyK-00046q-BI for ged-emacs-devel@m.gmane.org; Tue, 05 May 2015 15:57:40 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45546) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ypiy8-00043w-5l for emacs-devel@gnu.org; Tue, 05 May 2015 15:57:29 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ypiy4-0008KR-IV for emacs-devel@gnu.org; Tue, 05 May 2015 15:57:28 -0400 Original-Received: from mercure.iro.umontreal.ca ([132.204.24.67]:58796) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ypiy4-0008KJ-Ds for emacs-devel@gnu.org; Tue, 05 May 2015 15:57:24 -0400 Original-Received: from hidalgo.iro.umontreal.ca (hidalgo.iro.umontreal.ca [132.204.27.50]) by mercure.iro.umontreal.ca (Postfix) with ESMTP id D7DCC85C9A; Tue, 5 May 2015 15:57:22 -0400 (EDT) Original-Received: from lechon.iro.umontreal.ca (lechon.iro.umontreal.ca [132.204.27.242]) by hidalgo.iro.umontreal.ca (Postfix) with ESMTP id AC5211E5B8D; Tue, 5 May 2015 15:56:57 -0400 (EDT) Original-Received: by lechon.iro.umontreal.ca (Postfix, from userid 20848) id 88DD0B41A0; Tue, 5 May 2015 15:56:57 -0400 (EDT) In-Reply-To: <87h9rqlvlq.fsf@petton.fr> (Nicolas Petton's message of "Tue, 05 May 2015 20:36:49 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) X-DIRO-MailScanner-Information: Please contact the ISP for more information X-DIRO-MailScanner: Found to be clean X-DIRO-MailScanner-SpamCheck: n'est pas un polluriel, SpamAssassin (score=-2.82, requis 5, autolearn=not spam, ALL_TRUSTED -2.82, MC_TSTLAST 0.00) X-DIRO-MailScanner-From: monnier@iro.umontreal.ca X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 132.204.24.67 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:186262 Archived-At: > PS: `pcase--u1' is pretty long (almost 200 loc), is there any reason not > to refactor it? As it is now I will have a very hard time understanding > what is does exactly. You shouldn't need to know how pcase--u1 works. You just need to write a pcase-macro which turns (seq ...) patterns into other (more primitive) pcase patterns. E.g. it could turn (seq a b) into a pattern like (and (pred seq-p) (app (elt 0) a) (app (elt 1) b)). Stefan