From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.lisp.guile.user Subject: Re: Guile 2.0.9, reader: Cannot 'read' an '*unspecified*' value Date: Tue, 03 Nov 2015 16:26:07 +0100 Organization: Organization?!? Message-ID: <87h9l3yui8.fsf@fencepost.gnu.org> References: <87611jxk33.fsf@elephant.savannah> <87pozr9m7e.fsf@T420.taylan> <87lhafyuq9.fsf@fencepost.gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1446564634 14663 80.91.229.3 (3 Nov 2015 15:30:34 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 3 Nov 2015 15:30:34 +0000 (UTC) To: guile-user@gnu.org Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Tue Nov 03 16:30:18 2015 Return-path: Envelope-to: guile-user@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 1ZtdXN-0001MJ-Vy for guile-user@m.gmane.org; Tue, 03 Nov 2015 16:30:18 +0100 Original-Received: from localhost ([::1]:49392 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtdXN-0001lR-Ct for guile-user@m.gmane.org; Tue, 03 Nov 2015 10:30:17 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60208) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtdXE-0001kS-Oe for guile-user@gnu.org; Tue, 03 Nov 2015 10:30:09 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZtdXA-0007LT-O6 for guile-user@gnu.org; Tue, 03 Nov 2015 10:30:08 -0500 Original-Received: from plane.gmane.org ([80.91.229.3]:53881) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtdXA-0007L5-Ik for guile-user@gnu.org; Tue, 03 Nov 2015 10:30:04 -0500 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1ZtdX9-00018h-G4 for guile-user@gnu.org; Tue, 03 Nov 2015 16:30:03 +0100 Original-Received: from x2f43c7e.dyn.telefonica.de ([2.244.60.126]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 03 Nov 2015 16:30:03 +0100 Original-Received: from dak by x2f43c7e.dyn.telefonica.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 03 Nov 2015 16:30:03 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 36 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: x2f43c7e.dyn.telefonica.de X-Face: 2FEFf>]>q>2iw=B6, xrUubRI>pR&Ml9=ao@P@i)L:\urd*t9M~y1^:+Y]'C0~{mAl`oQuAl \!3KEIp?*w`|bL5qr,H)LFO6Q=qx~iH4DN; i"; /yuIsqbLLCh/!U#X[S~(5eZ41to5f%E@'ELIi$t^ Vc\LWP@J5p^rst0+('>Er0=^1{]M9!p?&:\z]|;&=NP3AhB!B_bi^]Pfkw User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) Cancel-Lock: sha1:GgvBE+sVyTRK2aa+MzBZJhJDg68= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-user-bounces+guile-user=m.gmane.org@gnu.org Original-Sender: guile-user-bounces+guile-user=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.user:12132 Archived-At: David Kastrup writes: > taylanbayirli@gmail.com (Taylan Ulrich "Bayırlı/Kammer") writes: > >> Artyom Poptsov writes: >> >>> Hello Guilers, >>> >>> it seems that currently there's no way to 'read' back an >>> '*unspecified*' value, > > *unspecified* works reasonably fine in most circumstances. > > scheme@(guile-user)> (make-vector 3) > $1 = #(# # #) > scheme@(guile-user)> #(# # #) > While reading expression: > ERROR: In procedure scm_lreadr: #:2:3: Unknown # object: #\< > scheme@(guile-user)> #(*unspecified* *unspecified* *unspecified*) > $2 = #(*unspecified* *unspecified* *unspecified*) > scheme@(guile-user)> > > It seems like printing *unspecified* as # is not actually > doing anybody much of a favor, though. Though #(*unspecified* *unspecified* *unspecified*) is not actually an alternative, being a vector of three symbols. Cough cough. (vector *unspecified* *unspecified* *unspecified*) does read back properly but of course that does not turn *unspecified* into an actual print form of *unspecified*. Sorry for this particular brain fart. -- David Kastrup