From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Mark Oteiza Newsgroups: gmane.emacs.devel Subject: Re: [Emacs-diffs] master 4612b2a 1/2: Implement and-let* Date: Tue, 12 Sep 2017 13:29:58 -0400 Message-ID: <20170912172958.GA11109@holos.localdomain> References: <20170912171813.26498.77867@vcs0.savannah.gnu.org> <20170912171815.13B9520DE6@vcs0.savannah.gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: blaine.gmane.org 1505237416 16207 195.159.176.226 (12 Sep 2017 17:30:16 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 12 Sep 2017 17:30:16 +0000 (UTC) User-Agent: Mutt/1.9.0 (2017-09-02) Cc: emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Sep 12 19:30:10 2017 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 1drp0h-0003oa-3L for ged-emacs-devel@m.gmane.org; Tue, 12 Sep 2017 19:30:07 +0200 Original-Received: from localhost ([::1]:37796 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drp0o-0007oC-AR for ged-emacs-devel@m.gmane.org; Tue, 12 Sep 2017 13:30:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52722) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drp0f-0007ns-3s for emacs-devel@gnu.org; Tue, 12 Sep 2017 13:30:05 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1drp0a-0007wn-7d for emacs-devel@gnu.org; Tue, 12 Sep 2017 13:30:05 -0400 Original-Received: from mail-qt0-x234.google.com ([2607:f8b0:400d:c0d::234]:37198) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1drp0a-0007vd-3v for emacs-devel@gnu.org; Tue, 12 Sep 2017 13:30:00 -0400 Original-Received: by mail-qt0-x234.google.com with SMTP id b1so17437801qtc.4 for ; Tue, 12 Sep 2017 10:30:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=udel-edu.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=EsEuuEbLEmdrl1Fv3wGRJkOPq656BciLOwk+r8ZnPxA=; b=feIh12CUNFhSvxL0FZItCCR2bOaI5hkIzoq9ob8XyYVchUff/O/2vzi2LCT1nwrGoY i1khuCVZV67myjZFpoSS4OxR0qNslbsSgXyBJHtoNcqHQ5MM4D9DKeYzhrDpJbVbfPcV dJNweGGGgA9/e1lkwwv4znO7ozLEObenvinCRf0DS1er2sb1A804DYiMryQnt5h2Fp0M W3KII9yku0wJ5ryxdbSqtGLlsdHXsMEE3ftDBqrYFBlM23Em2ao0H0MlsXnZPQ4cVcih h3vQSoJuVVuVxQ93I9dUf8Yi+zYFiqEZwW8wDwM6dhImjVu7zzRBJBa4roM7uoY6+r3u wnGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=EsEuuEbLEmdrl1Fv3wGRJkOPq656BciLOwk+r8ZnPxA=; b=P8Ev+5FW2vy2uFB+XjPxwAfijcduxObv/Y7sRHNNpRAxdjjCdL8n8nFYDSD3c2njrQ YCr1JjEBLnEJYkkiN9yWqMXu9Rs9++aHgMN5IfF2+/CduG293k5Qx0gQCedBiCeEBd/4 62ZDpBIcXwpn4rUogUuDDNnp7kyixw0hBOd25WCm76V7Wp0Zm0MmTbLJ4lyRb+SKUSy1 n+7JA1gKFVpWLaGR76Dhc7uR2qoMeGBBIriSTj6qO3Y8fAP9EAkL4wCiY26f5HL0NJml n3sW7EA0ysD8AZTtvxtGdLmA11XvoC73T+CCXQeW/drObpr3+0STORI8MrU/qtlXezV+ 2R3w== X-Gm-Message-State: AHPjjUhCGcwSDYGz0S/7kbttKQcR/pF80YP6pPy6bwQ9GrkJNweS7gMB YSIroIpdg3yPYG86FDN0mReW X-Google-Smtp-Source: AOwi7QDcya9WZz3vkPDzCZucCEzfAp2OGEVnRg1SeduOxFzH5SbR5SGSFD4/2XBjXOiXfg1qpVFH2g== X-Received: by 10.237.61.108 with SMTP id h41mr21693884qtf.213.1505237399283; Tue, 12 Sep 2017 10:29:59 -0700 (PDT) Original-Received: from holos.localdomain (pool-173-67-36-61.bltmmd.fios.verizon.net. [173.67.36.61]) by smtp.gmail.com with ESMTPSA id j7sm7837603qth.25.2017.09.12.10.29.58 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 12 Sep 2017 10:29:58 -0700 (PDT) Original-Received: by holos.localdomain (Postfix, from userid 1000) id 4D4F568221; Tue, 12 Sep 2017 13:29:58 -0400 (EDT) Content-Disposition: inline In-Reply-To: X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400d:c0d::234 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:218142 Archived-At: On 12/09/17 at 01:21pm, Stefan Monnier wrote: > > (internal--build-binding-value-form): Extend to account for > > solitary symbols and (EXPR) items in binding varlist. > > We're forced to accept those forms in `let` and `let*` for historical > reasons, but why do we want to also accept them in newer constructs? Solitary symbols are expanded as x -> (x (and PREV x)), so it's not the historical behavior. (EXPR) means EXPR is an s-expression, which doesn't make sense in let or let*, e.g.: (let (x) (and-let* (((null x))) "it's null"))