From: e0726905@student.tuwien.ac.at   
      
   e0726905 wrote:   
   > Hi,   
   >   
   > I have been playing around with regular expressions for the last few   
   > weeks, implementing the automaton generation algorithms from the dragon   
   > book and taking at the existing tools.   
   > Now a few questions have sprung, that I haven't been able to answer: ...   
      
   Thanks for all the answers, they've really been helping me to understand   
   some of the problems/tradeoffs of writing language recognizers/tokenizers.   
      
   fabian.   
      
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