From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Pascal J. Bourguignon" Newsgroups: gmane.emacs.help Subject: Re: How to quote a list of functions? Date: Fri, 14 Aug 2015 09:56:23 +0200 Organization: Informatimago Message-ID: <87vbcicnh4.fsf@kuiper.lan.informatimago.com> References: <871tfdjqjx.fsf@mbork.pl> <877fp5b52v.fsf@nl106-137-147.student.uu.se> <8737zs7uq3.fsf@mbork.pl> <87zj1vddkz.fsf@kuiper.lan.informatimago.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1439539232 3207 80.91.229.3 (14 Aug 2015 08:00:32 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 14 Aug 2015 08:00:32 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Aug 14 10:00:22 2015 Return-path: Envelope-to: geh-help-gnu-emacs@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 1ZQ9uU-0006r5-HS for geh-help-gnu-emacs@m.gmane.org; Fri, 14 Aug 2015 10:00:18 +0200 Original-Received: from localhost ([::1]:45154 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZQ9uT-0004uk-PJ for geh-help-gnu-emacs@m.gmane.org; Fri, 14 Aug 2015 04:00:17 -0400 Original-Path: usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 46 Original-X-Trace: individual.net 1s8JtSLw99OrFklzwKZe0Aukx3+mUFCGL9Xxye5Vt7dcFmOzp9 Cancel-Lock: sha1:YTliYjczN2M1OTVkYmQ3NTJhMzlmZTQ2NjlmMzg2NGJiYmVjMzBmMA== sha1:OLzQWHuEdIpwfYWMqWHJr7hb7Z4= Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Original-Xref: usenet.stanford.edu gnu.emacs.help:214291 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:106575 Archived-At: Emanuel Berg writes: > "Pascal J. Bourguignon" > writes: > >> Definitely not. >> >> The notion of type should still exist in the mind of >> the programmer, if not in the compiler! >> >> The first parameter of put is of type symbol >> (function x) returns an object of type function. >> While it's true that in emacs lisp, symbol is >> a subtype of function, the reverse is not true. >> Some functions are not symbols. Therefore, the >> Lyskoff Substitution Principle tells us that >> >> (put #'upcase-region 'disabled nil) >> >> is a gross error. It should be: >> >> (put 'upcase-region 'disabled nil) > > I'm not going to use this at all. I don't see the > benefit of it because if I misspell a function, I will > realize that immediately as the keystroke or otherwise > invocation won't work. Besides I don't want to stop > and think if I should but the sharp sign there or not. > I never did and it always worked. Part of the > pleasure with Lisp is not thinking like a computer, > but like a man, and this poor man's typing is a step > away from that while not offering any benefits what > I can see. The OP presented it as something you should > definitely do but the subsequent discussion hasn't > showed that by far, and even he himself couldn't say > why you should bother. You still should, because it happens just because of an implementation detail (that function returns a symbol, instead of a function object), and implementation can change. -- __Pascal Bourguignon__ http://www.informatimago.com/ “The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment.” -- Carl Bass CEO Autodesk