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Date: Thu, 25 Aug 2011 19:34:44 +0200
Reply-To: Mailing list for the LaTeX3 project <[log in to unmask]>
Subject: l3keys: mirror boolean key
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From: Ulrike Fischer <[log in to unmask]>
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I have a boolean key 

\keys_define:nn { chessfss }
 { 
   sym .bool_set:N = \l_chessfss_sym_bool 
 }


Now I want to define a "mirrored" key  

no-sym 

so that "no-sym = true" sets  \l_chessfss_sym_bool to false. 

Is there some easy way? 


-- 
Ulrike Fischer

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