From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: How to tame compiler? Date: Sat, 01 May 2021 00:56:32 +0200 Message-ID: <87k0ojfkkf.fsf@zoho.eu> References: <874kfn292f.fsf@disroot.org> <87eeerh1g9.fsf@zoho.eu> <87sg37flpu.fsf@zoho.eu> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28540"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:p+uF0IqchZCEqKR0r6g2tNs/sW8= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sat May 01 00:57:09 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lcc4K-0007L0-Pp for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 01 May 2021 00:57:08 +0200 Original-Received: from localhost ([::1]:52758 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lcc4J-00068b-T2 for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 30 Apr 2021 18:57:07 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55976) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lcc3v-00068U-9l for help-gnu-emacs@gnu.org; Fri, 30 Apr 2021 18:56:43 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:58276) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lcc3t-0007lj-K7 for help-gnu-emacs@gnu.org; Fri, 30 Apr 2021 18:56:43 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1lcc3s-0006nL-9M for help-gnu-emacs@gnu.org; Sat, 01 May 2021 00:56:40 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:129237 Archived-At: Stefan Monnier wrote: >>> Here, as in your other example, you have to use `eval`, >>> because `command-history` was defined to contain a list of >>> ELisp expressions and those can't be used other than via >>> `eval`. >>> >>> So I'll grant you a pass for this time. >>> >>> If you were in a position to control the format of history >>> variable, then you wouldn't have to use `eval` here, OTOH: >>> you could define that variable to hold a list of >>> *functions* and you'd just use `funcall` instead of >>> `eval`. >> >> OK, clear... > > Of course, you can't "search" for functions the way you do > with the `cl-find-if`, and functions can't be printed in > a user-friendly way, so there's a good reason for > `command-history` not to contain just functions. > > So if you wanted to replace it with a history that can be > used without `eval`, you'd probably make the new variable > contain a list where every element is of the form (FUNCTION > . ARGS), so that you'd replace `eval` with `apply`, and > you'd recommend that the FUNCTION be a symbol rather than an > anonymous function, to be sure that it can be compared and > printed in a useful way. Okay, no, we are using `eval' and it works. If someone says we shouldn't do it we say we do it because of the format of `command-history'. If they say anything more after that I don't feel we have to say anything. -- underground experts united https://dataswamp.org/~incal