From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: MON KEY Newsgroups: gmane.emacs.bugs Subject: bug#6878: bool-vectors of length 0 signal error when aref/aset the 0th element Date: Thu, 19 Aug 2010 13:09:35 -0400 Message-ID: References: <87r5hutw2q.fsf@stupidchicken.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: dough.gmane.org 1282239582 32069 80.91.229.12 (19 Aug 2010 17:39:42 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 19 Aug 2010 17:39:42 +0000 (UTC) Cc: Andreas Schwab , 6878@debbugs.gnu.org To: Chong Yidong Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Aug 19 19:39:41 2010 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Om95P-0000k3-0I for geb-bug-gnu-emacs@m.gmane.org; Thu, 19 Aug 2010 19:39:40 +0200 Original-Received: from localhost ([127.0.0.1]:54800 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Om95I-0004aI-Pe for geb-bug-gnu-emacs@m.gmane.org; Thu, 19 Aug 2010 13:39:24 -0400 Original-Received: from [140.186.70.92] (port=36633 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Om95B-0004Yy-Qo for bug-gnu-emacs@gnu.org; Thu, 19 Aug 2010 13:39:20 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Om94u-0002pg-67 for bug-gnu-emacs@gnu.org; Thu, 19 Aug 2010 13:39:01 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:45012) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Om94u-0002pa-4f for bug-gnu-emacs@gnu.org; Thu, 19 Aug 2010 13:39:00 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1Om8bt-0008B9-Rs; Thu, 19 Aug 2010 13:09:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: MON KEY Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-To: owner@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 19 Aug 2010 17:09:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 6878 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 6878-submit@debbugs.gnu.org id=B6878.128223771031429 (code B ref 6878); Thu, 19 Aug 2010 17:09:01 +0000 Original-Received: (at 6878) by debbugs.gnu.org; 19 Aug 2010 17:08:30 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Om8bN-0008As-Ct for submit@debbugs.gnu.org; Thu, 19 Aug 2010 13:08:29 -0400 Original-Received: from mail-ww0-f46.google.com ([74.125.82.46]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Om8bM-0008Am-AX for 6878@debbugs.gnu.org; Thu, 19 Aug 2010 13:08:28 -0400 Original-Received: by wwb22 with SMTP id 22so2752099wwb.15 for <6878@debbugs.gnu.org>; Thu, 19 Aug 2010 10:09:35 -0700 (PDT) Original-Received: by 10.216.71.132 with SMTP id r4mr911019wed.102.1282237775370; Thu, 19 Aug 2010 10:09:35 -0700 (PDT) Original-Received: by 10.216.65.140 with HTTP; Thu, 19 Aug 2010 10:09:35 -0700 (PDT) In-Reply-To: <87r5hutw2q.fsf@stupidchicken.com> X-Google-Sender-Auth: jkzAc0yGnQNx_0gjfWWKqxOkFFc X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Thu, 19 Aug 2010 13:09:01 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) 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: , Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:39639 Archived-At: On Thu, Aug 19, 2010 at 12:18 PM, Chong Yidong wrote: > MON KEY writes: > >> So why would/should Emacs let me create a bool-vectors that I can >> neither set nor get without signalling an error? > > You can vconcat them. > Yep: (let* ((ab (make-bool-vector 1 t)) (abeq (cons ab ab))) (vconcat (car abeq) (cdr abeq))) ;=>[t t] But, again, where is the `t' or `nil'? (let* ((ab (make-bool-vector 0 t)) (abeq (cons ab ab))) (vconcat (car abeq) (cdr abeq))) ;=> [] The manual says a `t' or `nil' "must" be there. -- /s_P\