From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Chunyang Xu Newsgroups: gmane.emacs.bugs Subject: bug#24875: 26.0.50; In Dotted Pair Notation, the read function returns CDR if CAR is absent Date: Fri, 04 Nov 2016 21:36:38 +0800 Message-ID: <87fun7v02h.fsf@xuchunyang.me> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1478274064 14553 195.159.176.226 (4 Nov 2016 15:41:04 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 4 Nov 2016 15:41:04 +0000 (UTC) To: 24875@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Nov 04 16:40:58 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1c2gbL-0006sw-9y for geb-bug-gnu-emacs@m.gmane.org; Fri, 04 Nov 2016 16:40:19 +0100 Original-Received: from localhost ([::1]:39436 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c2gbO-0003Cq-6d for geb-bug-gnu-emacs@m.gmane.org; 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Fri, 04 Nov 2016 10:09:45 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c2fBb-0005GF-Fc for bug-gnu-emacs@gnu.org; Fri, 04 Nov 2016 10:09:43 -0400 Original-Received: from smtpbg132.qq.com ([113.108.23.42]:41623) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c2fBa-000598-Ph for bug-gnu-emacs@gnu.org; Fri, 04 Nov 2016 10:09:39 -0400 X-QQ-mid: bizesmtp8t1478266599twhzx3gfc Original-Received: from ubuntu (unknown [180.126.93.86]) by esmtp4.qq.com (ESMTP) with SMTP id 0 for ; Fri, 04 Nov 2016 21:36:39 +0800 (CST) X-QQ-SSF: 0110000000200020F112B00A0000000 X-QQ-FEAT: M7qaDlReithJPOAcJM34FB+w2zQEyUI+ut9+aitzeaFfeqlpD+bGQpa+dVDwQ xpIFie9BCNm+zYP7bHVPyZcTuHeDHbgwVa6CdeWKlsVKSqwdrOQCOyBfKyNSKp8hW5P/uqL kr3tjtY4mNec8OC4ZrkqARPmVM9WBlft9IIlClI175Y1VMLVDCaSza78cWx3mudH8hIYX4G +w0yDoEfCpBHiXKJZn2XtG8PX3tbET8l9Wl+eiU9ZCgZk7Z+WuxqDAdRD/xErqGk= X-QQ-GoodBg: 0 X-QQ-SENDSIZE: 520 X-QQ-Bgrelay: 1 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Mailman-Approved-At: Fri, 04 Nov 2016 11:40:00 -0400 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:125341 Archived-At: For example, I eval this in the *scratch* buffer: (read "( . 123)") =E2=87=92 123 (read "(1 . ( . (3 . nil)))") =E2=87=92 (1 3) I can't find explanation about this behavior in elisp manual. Is it expected? According to an answer [1] by wasamasa on Emacs StackExchange, Guile behaves the same, but other Lisp interpreters (csi, pil and sbcl) and MIT-Scheme don't permit reading this. [1] http://emacs.stackexchange.com/a/28410/3889