From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: "Garreau\, Alexandre" Newsgroups: gmane.emacs.devel Subject: Re: Why is there no `until' in elisp? Date: Wed, 17 Oct 2018 18:51:52 +0200 Message-ID: <87a7ncbjo7.fsf@portable.galex-713.eu> References: <87murdu6to.fsf@portable.galex-713.eu> <87y3axjusi.fsf@portable.galex-713.eu> <87pnw9gcjl.fsf@portable.galex-713.eu> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1539795005 3223 195.159.176.226 (17 Oct 2018 16:50:05 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 17 Oct 2018 16:50:05 +0000 (UTC) User-Agent: Gnus (5.13), GNU Emacs 25.1.1 (i686-pc-linux-gnu) Cc: emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Oct 17 18:50:01 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 1gCp1E-0000hi-Lw for ged-emacs-devel@m.gmane.org; Wed, 17 Oct 2018 18:50:00 +0200 Original-Received: from localhost ([::1]:38170 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gCp3L-0006bm-8g for ged-emacs-devel@m.gmane.org; Wed, 17 Oct 2018 12:52:11 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47556) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gCp39-0006Zr-V9 for emacs-devel@gnu.org; Wed, 17 Oct 2018 12:52:00 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gCp39-0005S9-A9 for emacs-devel@gnu.org; Wed, 17 Oct 2018 12:51:59 -0400 Original-Received: from portable.galex-713.eu ([2a00:5884:8305::1]:50814) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gCp39-0005Pe-0I for emacs-devel@gnu.org; Wed, 17 Oct 2018 12:51:59 -0400 Original-Received: from localhost ([::1] helo=portable.galex-713.eu) by portable.galex-713.eu with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gCp32-0005FI-RC; Wed, 17 Oct 2018 18:51:52 +0200 X-GPG-FINGERPRINT: E109 9988 4197 D7CB B0BC 5C23 8DEB 24BA 867D 3F7F X-Accept-Language: fr, en, it, eo In-Reply-To: (Stefan Monnier's message of "Wed, 17 Oct 2018 11:06:28 -0400") X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:5884:8305::1 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:230457 Archived-At: Le 17/10/2018 =C3=A0 11h06, Stefan Monnier a =C3=A9crit=C2=A0: >> No, `while' currently returns its last body, I just checked: >> (let ((x 0)) (while (< x 5) (setq x (+ 1 x))) 8)) > > The 8 in your test case is outside of `while`, so it just shows what > `let` returns, not what `while` returns. Try > > (let ((x 0)) (while (< x 5) (setq x (+ 1 x)))) > or > (let ((x 0)) (while (< x 5) (setq x (+ 1 x)) 8)) My bad! yours lack a closing paren, but yes indeed you are right!