From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.help Subject: RE: Why is booleanp defined this way? Date: Fri, 17 Apr 2015 19:37:28 -0700 (PDT) Message-ID: <44598fef-6532-4b70-b3b1-c85edb0582f9@default> References: <87siby7au6.fsf@mbork.pl> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1429324689 19752 80.91.229.3 (18 Apr 2015 02:38:09 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 18 Apr 2015 02:38:09 +0000 (UTC) To: Marcin Borkowski , Help Gnu Emacs mailing list Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Apr 18 04:37:52 2015 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YjIdi-0005dR-6o for geh-help-gnu-emacs@m.gmane.org; Sat, 18 Apr 2015 04:37:50 +0200 Original-Received: from localhost ([::1]:44306 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YjIdh-00077T-Kp for geh-help-gnu-emacs@m.gmane.org; Fri, 17 Apr 2015 22:37:49 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51398) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YjIdV-00077N-KA for help-gnu-emacs@gnu.org; Fri, 17 Apr 2015 22:37:38 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YjIdQ-00023K-Ht for help-gnu-emacs@gnu.org; Fri, 17 Apr 2015 22:37:37 -0400 Original-Received: from aserp1040.oracle.com ([141.146.126.69]:43313) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YjIdQ-000236-9x for help-gnu-emacs@gnu.org; Fri, 17 Apr 2015 22:37:32 -0400 Original-Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t3I2bTMx022923 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Sat, 18 Apr 2015 02:37:30 GMT Original-Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userv0022.oracle.com (8.13.8/8.13.8) with ESMTP id t3I2bTOV020086 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Sat, 18 Apr 2015 02:37:29 GMT Original-Received: from abhmp0013.oracle.com (abhmp0013.oracle.com [141.146.116.19]) by userv0122.oracle.com (8.13.8/8.13.8) with ESMTP id t3I2bT2R009667; Sat, 18 Apr 2015 02:37:29 GMT In-Reply-To: <87siby7au6.fsf@mbork.pl> X-Priority: 3 X-Mailer: Oracle Beehive Extensions for Outlook 2.0.1.9 (901082) [OL 12.0.6691.5000 (x86)] X-Source-IP: userv0022.oracle.com [156.151.31.74] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 141.146.126.69 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:103796 Archived-At: If you grep for `booleanp' in the Emacs Lisp sources you will see that it is used pretty much exclusively as the value of property `safe-local-variable'. IOW, it is used (only) to declare that the value of this or that variable can be considered "safe" if it is `t' or `nil'. That's all.