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: let*: Wrong type argument: stringp, nil Date: Wed, 29 Sep 2021 05:57:52 +0200 Message-ID: <87lf3gqbi7.fsf@zoho.eu> References: <87lf3lrmos.fsf@gmx.net> <87ee9csyp0.fsf@gmx.net> <87a6k0sogz.fsf@gmx.net> 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="29678"; 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:Uw+7lVgkAvenYuMEyBqvV5zdIQY= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Sep 29 05:59:10 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 1mVQkQ-0007WJ-F3 for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 29 Sep 2021 05:59:10 +0200 Original-Received: from localhost ([::1]:47856 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mVQkP-0006XL-4F for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 28 Sep 2021 23:59:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39266) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVQjM-0006VK-JJ for help-gnu-emacs@gnu.org; Tue, 28 Sep 2021 23:58:04 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:33010) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVQjK-0003lZ-8K for help-gnu-emacs@gnu.org; Tue, 28 Sep 2021 23:58:04 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mVQjG-0005uV-9y for help-gnu-emacs@gnu.org; Wed, 29 Sep 2021 05:57:58 +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: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, 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:133368 Archived-At: Hongyi Zhao wrote: > (defun try/pyvenv-workon () > (when (and (buffer-file-name) > (locate-dominating-file (buffer-file-name) ".python-version")) > (let ((file (concat (locate-dominating-file (buffer-file-name) > ".python-version") ".python-version"))) > (pyvenv-workon > (with-temp-buffer > (insert-file-contents file) > (nth 0 (split-string (buffer-string)))))))) Use `let' so you don't have to hard-code the same data three times. -- underground experts united https://dataswamp.org/~incal