From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: Pascal Bourguignon Newsgroups: gmane.emacs.help Subject: Re: What's wrong with value? Date: 06 Feb 2003 21:31:11 +0100 Organization: informatimago.com Sender: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Message-ID: <874r7h5ey8.fsf@thalassa.informatimago.com> References: <871y2l73pv.fsf@thalassa.informatimago.com> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1044563751 10386 80.91.224.249 (6 Feb 2003 20:35:51 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Thu, 6 Feb 2003 20:35:51 +0000 (UTC) Return-path: Original-Received: from monty-python.gnu.org ([199.232.76.173]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 18gskL-0002gc-00 for ; Thu, 06 Feb 2003 21:35:45 +0100 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.10.13) id 18gskN-0000Nx-05 for gnu-help-gnu-emacs@m.gmane.org; Thu, 06 Feb 2003 15:35:47 -0500 Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!bloom-beacon.mit.edu!iad-peer.news.verio.net!news.verio.net!fu-berlin.de!uni-berlin.de!thalassa.informatimago.COM!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 42 Original-NNTP-Posting-Host: thalassa.informatimago.com (212.87.205.57) Original-X-Trace: fu-berlin.de 1044563473 40509755 212.87.205.57 (16 [41911]) User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 Original-Xref: shelby.stanford.edu gnu.emacs.help:109888 Original-To: help-gnu-emacs@gnu.org X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1b5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Help: List-Post: List-Subscribe: , List-Archive: List-Unsubscribe: , Errors-To: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Xref: main.gmane.org gmane.emacs.help:6393 X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:6393 David Kastrup writes: > Jesper Harder writes: > > > Pascal Bourguignon writes: > > > > > What's happening with this symbol: > > > > > > (setq value :toto) ;; C-x C-e, :toto appears in Mini-buffer. > > > (show value) ;; But value has not been assigned! > > > ==> nil > > > > > > Note that while 'value is a method defined with eieio > > > > I don't think eieio is the culprit. > > > > Try it with a clean 'emacs -q --no-site-file' -- the same thing happens. > > Very mysterious! > > (defun eval-last-sexp (eval-last-sexp-arg-internal) > "Evaluate sexp before point; print value in minibuffer. > Interactively, with prefix argument, print output into current buffer." > (interactive "P") > (if (null eval-expression-debug-on-error) > (eval-last-sexp-1 eval-last-sexp-arg-internal) > (let ((old-value (make-symbol "t")) new-value value) > (let ((debug-on-error old-value)) > (setq value (eval-last-sexp-1 eval-last-sexp-arg-internal)) > (setq new-value debug-on-error)) > (unless (eq old-value new-value) > (setq debug-on-error new-value)) > value))) Yes, I thought about something like that. Hence the interest of lexical scoping of Common-Lisp... Thank you. -- __Pascal_Bourguignon__ http://www.informatimago.com/ ---------------------------------------------------------------------- There is a fault in reality. Do not adjust your minds. -- Salman Rushdie