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: trunk r117969: Font-lock `cl-flet*', too. Date: Sun, 28 Sep 2014 21:30:11 -0400 Message-ID: References: <87bnpz981y.fsf@zigzag.favinet> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1411954259 15245 80.91.229.3 (29 Sep 2014 01:30:59 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 29 Sep 2014 01:30:59 +0000 (UTC) Cc: emacs-devel@gnu.org To: Leo Liu Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Sep 29 03:30:51 2014 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 1XYPnf-0006Un-It for ged-emacs-devel@m.gmane.org; Mon, 29 Sep 2014 03:30:51 +0200 Original-Received: from localhost ([::1]:33842 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XYPne-0004z1-Vp for ged-emacs-devel@m.gmane.org; Sun, 28 Sep 2014 21:30:50 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:43853) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XYPnF-0004wg-TR for emacs-devel@gnu.org; Sun, 28 Sep 2014 21:30:33 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XYPn8-0004ly-Ea for emacs-devel@gnu.org; Sun, 28 Sep 2014 21:30:25 -0400 Original-Received: from ironport2-out.teksavvy.com ([206.248.154.181]:20378) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XYPn8-0004kS-BO for emacs-devel@gnu.org; Sun, 28 Sep 2014 21:30:18 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ArUGAIDvNVNFxKjo/2dsb2JhbABZgwaDSsA9gRcXdIIlAQEBAQIBViMFCwsOJhIUGA0kiAQI0hkXjnoHhDgEqRmBaoNMIQ X-IPAS-Result: ArUGAIDvNVNFxKjo/2dsb2JhbABZgwaDSsA9gRcXdIIlAQEBAQIBViMFCwsOJhIUGA0kiAQI0hkXjnoHhDgEqRmBaoNMIQ X-IronPort-AV: E=Sophos;i="4.97,753,1389762000"; d="scan'208";a="91138776" Original-Received: from 69-196-168-232.dsl.teksavvy.com (HELO pastel.home) ([69.196.168.232]) by ironport2-out.teksavvy.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 28 Sep 2014 21:30:12 -0400 Original-Received: by pastel.home (Postfix, from userid 20848) id 042C37CFD; Sun, 28 Sep 2014 21:30:11 -0400 (EDT) In-Reply-To: (Leo Liu's message of "Mon, 29 Sep 2014 07:09:10 +0800") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 206.248.154.181 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:174788 Archived-At: > I compare the expansions of these two forms and they look quite similar > to me. What kind of inefficiency do you have in mind? Notice the `setq's? These make a big difference in lexical-binding code (since they mean that we can't close over the var's value but have to close over the var's memory location, which gets reified as a cons cell). Stefan