From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#52063: 28.0.60; Confusing presentation of lambda Date: Fri, 26 Nov 2021 13:28:25 +0100 Message-ID: <875ysf9k46.fsf@gnus.org> References: <83czmqaegb.fsf@gnu.org> <874k82vwe5.fsf@gnus.org> <831r35afde.fsf@gnu.org> <87v90hu36b.fsf@gnus.org> <83v90h8zjw.fsf@gnu.org> <87r1b5u1cl.fsf@gnus.org> <83pmqp8vps.fsf@gnu.org> <87v90ge5rc.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="25997"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: Philipp Stephani , Filipp Gunbin , 52063@debbugs.gnu.org, Stefan Monnier To: Jim Porter Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Nov 26 13:29:21 2021 Return-path: Envelope-to: geb-bug-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 1mqaLx-0006aH-1p for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 26 Nov 2021 13:29:21 +0100 Original-Received: from localhost ([::1]:33590 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mqaLv-0001Zu-V7 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 26 Nov 2021 07:29:19 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:40232) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mqaLe-0001Xm-8i for bug-gnu-emacs@gnu.org; Fri, 26 Nov 2021 07:29:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:47327) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mqaLd-0005Hp-WD for bug-gnu-emacs@gnu.org; Fri, 26 Nov 2021 07:29:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mqaLd-0008Bz-U3 for bug-gnu-emacs@gnu.org; Fri, 26 Nov 2021 07:29:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 26 Nov 2021 12:29:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 52063 X-GNU-PR-Package: emacs Original-Received: via spool by 52063-submit@debbugs.gnu.org id=B52063.163792971831458 (code B ref 52063); Fri, 26 Nov 2021 12:29:01 +0000 Original-Received: (at 52063) by debbugs.gnu.org; 26 Nov 2021 12:28:38 +0000 Original-Received: from localhost ([127.0.0.1]:58873 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mqaLG-0008BK-2a for submit@debbugs.gnu.org; Fri, 26 Nov 2021 07:28:38 -0500 Original-Received: from quimby.gnus.org ([95.216.78.240]:51166) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mqaLE-0008B5-4m for 52063@debbugs.gnu.org; Fri, 26 Nov 2021 07:28:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=jruw4WT8f8NDBGZ6cSDRuqy6cIzkukRHkIjIao5X2N8=; b=PyO3wBWI5I2cJGFcggm+NwZ3dZ FoheWLEQgB7TcQMBWyIve2Mk3RUfkikyTGunHe2CcfB/FehJuPBv7tZRcn5H3u9npoVuhKuWuWKFo 272eSdrtZjXhEs2J1SaKkBmERper70x86ESIUQqF6ulaYYdI/4PtrCeWxtFflMNwKsCM=; Original-Received: from [84.212.220.105] (helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mqaL4-0004aF-03; Fri, 26 Nov 2021 13:28:28 +0100 X-Now-Playing: Sylvain Chauveau's _Simple_: "Blanc (live)" In-Reply-To: (Jim Porter's message of "Thu, 25 Nov 2021 11:56:16 -0800") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:220865 Archived-At: Jim Porter writes: > It might be nice to print an empty arglist as "()" instead of "nil" > too. While both of those are equivalent, I think "()" is more > idiomatic when showing an arglist. Currently we have: > > (lambda () (setq foo 1)) > ;; => (closure (t) nil (setq foo 1)) The printer used here is a general Lisp printer, and doesn't know anything about the semantics. (And I don't think we can change that.) But Emacs 29 has a language-aware pp variant, which does what you suggest: (lambda () 'foo) => (closure (t) nil 'foo) (pp-emacs-lisp-code '(closure (t) nil 'foo)) => (closure (t) () 'foo) -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no