From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Bill Wohler Newsgroups: gmane.emacs.devel Subject: Re: defvars at compile time Date: Thu, 16 Mar 2006 14:51:12 -0800 Organization: Newt Software Message-ID: <87zmjqovfj.fsf@olgas.newt.com> References: <20403.1141690692@olgas.newt.com> <3861.1142268982@olgas.newt.com> <22907.1142318606@olgas.newt.com> <3669.1142364565@olgas.newt.com> <7035.1142372131@olgas.newt.com> <28215.1142437339@olgas.newt.com> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: sea.gmane.org 1142549526 29218 80.91.229.2 (16 Mar 2006 22:52:06 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Thu, 16 Mar 2006 22:52:06 +0000 (UTC) Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Mar 16 23:52:04 2006 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1FK1K0-0001Up-R6 for ged-emacs-devel@m.gmane.org; Thu, 16 Mar 2006 23:51:57 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1FK1K0-0007Xi-Aw for ged-emacs-devel@m.gmane.org; Thu, 16 Mar 2006 17:51:56 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1FK1Jl-0007Xc-VB for emacs-devel@gnu.org; Thu, 16 Mar 2006 17:51:42 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1FK1Jk-0007WP-A9 for emacs-devel@gnu.org; Thu, 16 Mar 2006 17:51:41 -0500 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1FK1Jk-0007WH-5O for emacs-devel@gnu.org; Thu, 16 Mar 2006 17:51:40 -0500 Original-Received: from [80.91.229.2] (helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA:32) (Exim 4.52) id 1FK1OU-00011W-1I for emacs-devel@gnu.org; Thu, 16 Mar 2006 17:56:34 -0500 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1FK1Ja-0001Rr-BS for emacs-devel@gnu.org; Thu, 16 Mar 2006 23:51:30 +0100 Original-Received: from h-68-165-4-28.snvacaid.dynamic.covad.net ([68.165.4.28]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 16 Mar 2006 23:51:30 +0100 Original-Received: from wohler by h-68-165-4-28.snvacaid.dynamic.covad.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 16 Mar 2006 23:51:30 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-To: emacs-devel@gnu.org Original-Lines: 24 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: h-68-165-4-28.snvacaid.dynamic.covad.net User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) Cancel-Lock: sha1:OTxKFvNcH0bly6jy6yMpAOKsfh0= X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:51721 Archived-At: bojohan+news@dd.chalmers.se (Johan Bockgård) writes: > Kevin Rodgers writes: > >> (defmacro symbol-value-safe (symbol) >> "Return SYMBOL's value, but avoid signaling an error if it is void. >> If SYMBOL is void, return nil." > [...] > > ,----[ C-h f bound-and-true-p RET ] > | bound-and-true-p is a Lisp macro in `bindings.el'. > | (bound-and-true-p VAR) > | > | Return the value of symbol VAR if it is bound, else nil. > `---- Nice. Too bad it's not available in XEmacs (21). Funny name. Seems like value-if-bound would be more accurate. -- Bill Wohler http://www.newt.com/wohler/ GnuPG ID:610BD9AD Maintainer of comp.mail.mh FAQ and MH-E. Vote Libertarian! If you're passed on the right, you're in the wrong lane.