From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thorsten Subject: [babel] What is `, (backquote comma)? Date: Wed, 21 Sep 2011 19:37:42 +0200 Message-ID: <867h51x0d5.fsf@googlemail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from eggs.gnu.org ([140.186.70.92]:54130) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R6R0m-0004zO-DL for emacs-orgmode@gnu.org; Wed, 21 Sep 2011 13:55:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R6R0k-0002lQ-FK for emacs-orgmode@gnu.org; Wed, 21 Sep 2011 13:55:08 -0400 Received: from lo.gmane.org ([80.91.229.12]:57776) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R6R0k-0002kD-AB for emacs-orgmode@gnu.org; Wed, 21 Sep 2011 13:55:06 -0400 Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1R6R0j-0004D0-EH for emacs-orgmode@gnu.org; Wed, 21 Sep 2011 19:55:05 +0200 Received: from e178189072.adsl.alicedsl.de ([85.178.189.72]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 21 Sep 2011 19:55:05 +0200 Received: from quintfall by e178189072.adsl.alicedsl.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 21 Sep 2011 19:55:05 +0200 List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: emacs-orgmode@gnu.org Hi List, in org-babel-expand-body:scheme (and e.g. org-babel-expand-body:emacs-lisp) I encounter something like this: (lambda (var) (format "%S" (print `(,(car var) ',(cdr var))))) While this part `(,(car var) ...) is explained in the manual (backquote and unquote), this part `(... ',(cdr var)) is a bit mysterious to me, and I do not find information about backquote( ... backquote comma ()) in the manuals or the web. Is that Emacs Lisp? What does that mean? Cheers Thorsten