From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Sebastian Tennant Newsgroups: gmane.emacs.help Subject: Re: add-hook Date: Thu, 07 Jun 2007 13:00:44 +0300 Message-ID: <87r6ooccdv.fsf@moley.org> References: <87bqft5no4.fsf@moley.org> <87tztktes8.fsf@ambire.localdomain> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1181210476 28339 80.91.229.12 (7 Jun 2007 10:01:16 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Thu, 7 Jun 2007 10:01:16 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Jun 07 12:01:15 2007 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1HwEnr-0000do-46 for geh-help-gnu-emacs@m.gmane.org; Thu, 07 Jun 2007 12:01:15 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HwEnq-0002gg-3Z for geh-help-gnu-emacs@m.gmane.org; Thu, 07 Jun 2007 06:01:14 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HwElZ-0002Ae-5B for help-gnu-emacs@gnu.org; Thu, 07 Jun 2007 05:58:53 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HwElV-00029h-St for help-gnu-emacs@gnu.org; Thu, 07 Jun 2007 05:58:51 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HwElV-00029I-Bb for help-gnu-emacs@gnu.org; Thu, 07 Jun 2007 05:58:49 -0400 Original-Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1HwElV-00027O-1Z for help-gnu-emacs@gnu.org; Thu, 07 Jun 2007 05:58:49 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1HwElM-0005iV-Op for help-gnu-emacs@gnu.org; Thu, 07 Jun 2007 11:58:40 +0200 Original-Received: from 85.105.17.65 ([85.105.17.65]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 07 Jun 2007 11:58:40 +0200 Original-Received: from sebyte by 85.105.17.65 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 07 Jun 2007 11:58:40 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 38 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 85.105.17.65 User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.0.95 (gnu/linux) Cancel-Lock: sha1:0WqeQxPerRaQZS2PcwY2IRuB6pU= X-detected-kernel: Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:44745 Archived-At: Quoth Thien-Thi Nguyen : > () Sebastian Tennant > () Thu, 07 Jun 2007 03:20:33 +0300 > > Perhaps someone could explain why it is lambda > functions don't need to be quoted in this context? > > in elisp, the form `(lambda ARGS BODY)' is self-quoting in > all contexts, like numbers and strings. sometimes you see: > > (function (lambda ...)) > #'(lambda ...) > > these serve as hints to the byte compiler that the form > should be compiled. on the other hand, if you see: > > '(lambda ...) > > then that tells the compiler to treat the form as data (DON'T compile). > if you aren't byte compiling, quoting is strictly optional. > > thi Many thanks. I was aware that everything boils down to lambda functions in lisp but it hadn't occured to me that they are self quoting in all contexts, although now I think about it I realise they _have_ to be self-quoting, given that they are one of the fundamental building blocks... (info "(elisp)Anonymous Functions"): In Lisp, a function is a list that starts with `lambda', a byte-code function compiled from such a list, or alternatively a primitive subr-object; names are "extra." Sebastian