From: philipp.kraus@flashpixx.de   
      
   Hello,   
      
   I try to create my own language in EBNF structure. At this time I use   
   AntLR for creating the grammar and testing my grammar rules.   
   But AntLR seems to be a little bit buggy. Same grammar run in one   
   hand perfectly and on the other hand the grammar crashs AntLR down.   
      
   Do anyone know a tool for create grammars with a interpreter and   
   graphical view of the grammar? I use OS X and Linux and will take   
   the rules to C++ with Bison.   
      
   Thanks a lot   
      
   Phil   
      
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