From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Newsgroups: gmane.emacs.help Subject: Re: Understanding the "let" construct and the setting of variables Date: Fri, 18 Dec 2020 23:31:12 +0100 Message-ID: <20201218223112.GA27773@tuxteam.de> References: <87zh2d1byp.fsf@fastmail.fm> <87o8is26nu.fsf@fastmail.fm> <87wnxeyh8x.fsf@zoho.eu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="2fHTh5uZTiUOsy+g" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="19148"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/1.5.21 (2010-09-15) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Dec 18 23:35:51 2020 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 1kqOLm-0004r3-4e for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 18 Dec 2020 23:35:50 +0100 Original-Received: from localhost ([::1]:35488 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kqOLl-0004wn-73 for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 18 Dec 2020 17:35:49 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:45720) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kqOHS-000385-HH for help-gnu-emacs@gnu.org; Fri, 18 Dec 2020 17:31:23 -0500 Original-Received: from mail.tuxteam.de ([5.199.139.25]:39822) by eggs.gnu.org with esmtps (TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.90_1) (envelope-from ) id 1kqOHN-0003Kq-C6 for help-gnu-emacs@gnu.org; Fri, 18 Dec 2020 17:31:22 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tuxteam.de; s=mail; h=From:In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject:To:Date; bh=jGK+TrKM+hQDlbVDXOZtxY06yV1KAhw5zxROqn1ByMc=; b=b3h4rmo9VRjKXSF0u02UEJfqOXxjU0zeux33eIZ0rPdwTjKUrc3KhmRZwR41hKW1gCE3ND8BR69vhCmuDr8Qfx1J0y3PGQjnI6FmghnPXHW/mC3eZRgSx5N+1tNCpdajK7/eIQphRzOuSg1XBLgSEV00YlSUBL/71E6ncOPPOPD6obfAj6gHvdkDyEW4/rwHNae5ZfY6oNC9k01TppPpvKLJtu8MSMM09rIO3fz9ImFyvZK4SjxXM06+pupDkbIVlPNQFaTwP3ufYIjGQ/kspQRvpF1xNbFiU/BVmLQPrFsXQVVhYXVQyK5dbh/bAGe172xA19Dhpq7pFWTA8Cfyaw==; Original-Received: from tomas by mail.tuxteam.de with local (Exim 4.80) (envelope-from ) id 1kqOHI-0007I5-T4 for help-gnu-emacs@gnu.org; Fri, 18 Dec 2020 23:31:12 +0100 Content-Disposition: inline In-Reply-To: <87wnxeyh8x.fsf@zoho.eu> Received-SPF: pass client-ip=5.199.139.25; envelope-from=tomas@tuxteam.de; helo=mail.tuxteam.de X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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:126537 Archived-At: --2fHTh5uZTiUOsy+g Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Dec 18, 2020 at 09:46:38PM +0100, Emanuel Berg via Users list for t= he GNU Emacs text editor wrote: > steve-humphreys wrote: >=20 > > This gets me to "defvar" [...] > Just think of defvar as a way of telling Emacs and everyone > else, "I intend to use a variable with this name." Especially the "everyone else" part. You use defvar especially when you want your package's users "hey, here is a knob you can tweak to adjust the package to your needs...". Cheers - t --2fHTh5uZTiUOsy+g Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAl/dLbAACgkQBcgs9XrR2kZG8wCeK5jCIn7Q5WbRqLwBVSjsPluu /+wAn3Va6FhL4jCInIqpnK0PuzTDOg// =7t/J -----END PGP SIGNATURE----- --2fHTh5uZTiUOsy+g--