From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.devel Subject: Macro expansion: Why doesn't the invoked macro see (let (variables)) from the invoking one? Date: Wed, 8 Feb 2012 17:26:38 +0000 Message-ID: <20120208172638.GB3523@acm.acm> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1328722024 6818 80.91.229.3 (8 Feb 2012 17:27:04 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Wed, 8 Feb 2012 17:27:04 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Feb 08 18:27:04 2012 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1RvBIN-00078l-12 for ged-emacs-devel@m.gmane.org; Wed, 08 Feb 2012 18:27:03 +0100 Original-Received: from localhost ([::1]:38973 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RvBIM-0004Yn-Jd for ged-emacs-devel@m.gmane.org; Wed, 08 Feb 2012 12:27:02 -0500 Original-Received: from eggs.gnu.org ([140.186.70.92]:57235) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RvBIJ-0004Y4-7k for emacs-devel@gnu.org; Wed, 08 Feb 2012 12:27:00 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RvBIH-0007F1-No for emacs-devel@gnu.org; Wed, 08 Feb 2012 12:26:59 -0500 Original-Received: from colin.muc.de ([193.149.48.1]:22416 helo=mail.muc.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RvBIH-0007Eh-FX for emacs-devel@gnu.org; Wed, 08 Feb 2012 12:26:57 -0500 Original-Received: (qmail 64368 invoked by uid 3782); 8 Feb 2012 17:26:53 -0000 Original-Received: from acm.muc.de (pD9557B64.dip.t-dialin.net [217.85.123.100]) by colin.muc.de (tmda-ofmipd) with ESMTP; Wed, 08 Feb 2012 18:26:50 +0100 Original-Received: (qmail 31729 invoked by uid 1000); 8 Feb 2012 17:26:38 -0000 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-Delivery-Agent: TMDA/1.1.12 (Macallan) X-Primary-Address: acm@muc.de X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 193.149.48.1 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:148364 Archived-At: Hello, Emacs. One macro FOO binds a let variable, then invokes another macro BAR. BAR doesn't see this let variable. Why not? Is there anything I can do about this? (defmacro BAR () (message (if (boundp 'asdf) "asdf" "no asdf")) '(message "bar")) (defmacro FOO () (let (asdf) `(BAR))) -- Alan Mackenzie (Nuremberg, Germany).