From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#59714: 30.0.50; (void-function cl-letf) Date: Wed, 30 Nov 2022 15:47:19 +0200 Message-ID: <837czclfko.fsf@gnu.org> References: <7e1c3a3e-ae44-630b-2343-23fe89eb0723@inventati.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31307"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 59714@debbugs.gnu.org To: Manuel Uberti Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Nov 30 14:48:13 2022 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 1p0NRd-0007xY-DG for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 30 Nov 2022 14:48:13 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p0NRX-00073B-It; 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Original-Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p0NRE-0001TS-LG; Wed, 30 Nov 2022 08:47:48 -0500 In-Reply-To: <7e1c3a3e-ae44-630b-2343-23fe89eb0723@inventati.org> (bug-gnu-emacs@gnu.org) 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:249497 Archived-At: > Date: Wed, 30 Nov 2022 07:45:51 +0100 > From: Manuel Uberti via "Bug reports for GNU Emacs, > the Swiss army knife of text editors" > > this is the problem: > > - emacs -Q > - Evaluate: (cl-letf (((default-value 'process-environment) nil))) > - You see the following error: > > Debugger entered--Lisp error: (void-function cl-letf) > (cl-letf (((default-value 'process-environment) nil))) > (progn (cl-letf (((default-value 'process-environment) nil)))) > eval((progn (cl-letf (((default-value 'process-environment) nil)))) t) > elisp--eval-last-sexp(nil) > eval-last-sexp(nil) > funcall-interactively(eval-last-sexp nil) > call-interactively(eval-last-sexp nil nil) > command-execute(eval-last-sexp) > > - Evaluate again: (cl-letf (((default-value 'process-environment) nil))) > > The error is not shown any more. Why is this a problem? Before you evaluate the offending expression, (featurep 'cl-lib) yields nil, after that it yields t (because Emacs needed to load that package). I don't see what is wrong here.