From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Miles Bader Newsgroups: gmane.emacs.devel Subject: Re: lexical-binding questions Date: Sun, 06 May 2012 09:08:41 +0900 Message-ID: <878vh62mt2.fsf@catnip.gol.com> References: <871umzrvfw.fsf@gmail.com> <87wr4rqg6g.fsf@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1336262935 20711 80.91.229.3 (6 May 2012 00:08:55 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sun, 6 May 2012 00:08:55 +0000 (UTC) Cc: emacs-devel@gnu.org, Thierry Volpiatto To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun May 06 02:08:54 2012 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 1SQp1x-0002Np-CX for ged-emacs-devel@m.gmane.org; Sun, 06 May 2012 02:08:53 +0200 Original-Received: from localhost ([::1]:48776 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SQp1w-0007Ph-BJ for ged-emacs-devel@m.gmane.org; Sat, 05 May 2012 20:08:52 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:54073) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SQp1t-0007Pc-H3 for emacs-devel@gnu.org; Sat, 05 May 2012 20:08:50 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SQp1r-0006tp-Qi for emacs-devel@gnu.org; Sat, 05 May 2012 20:08:49 -0400 Original-Received: from smtp11.dentaku.gol.com ([203.216.5.73]:39349) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SQp1r-0006ou-BY; Sat, 05 May 2012 20:08:47 -0400 Original-Received: from 218.231.154.2.eo.eaccess.ne.jp ([218.231.154.2] helo=catnip.gol.com) by smtp11.dentaku.gol.com with esmtpa (Dentaku) (envelope-from ) id 1SQp1n-0002Jz-0X; Sun, 06 May 2012 09:08:43 +0900 Original-Received: by catnip.gol.com (Postfix, from userid 1000) id D02B3DFC1; Sun, 6 May 2012 09:08:41 +0900 (JST) System-Type: x86_64-unknown-linux-gnu In-Reply-To: (Stefan Monnier's message of "Sat, 05 May 2012 09:29:39 -0400") Original-Lines: 19 X-Virus-Scanned: ClamAV GOL (outbound) X-Abuse-Complaints: abuse@gol.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 203.216.5.73 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:150309 Archived-At: Stefan Monnier writes: >> Also, in CL, the declare spec is placed at the beginning of the let > [...] >> Why does it behave differently from CL? > > Because it forces the interpreter to check for the presence of > a `declare' every time it sees a `let', even though it will only find > one once per century or so. > It's an OK design for a language where there's always going to be > a pre-processing of some sort before evaluation but for Emacs's pure > naive interpreter it's inconvenient. It doesn't seem _that_ inconvenient (or inefficient)... -miles -- Conservative, n. A statesman enamored of existing evils, as opposed to a Liberal, who wants to replace them with new ones.