From: march1896@gmail.com   
      
   Dear All:   
     I am writing a regexp lib which can be accessed on   
   http://code.google.com/p/snev/source/browse/#svn/trunk/tlab/regexp/new.   
   It use the theory in dragon book, regexp->NFA->DFA. but when I try to   
   match the '^'(begin of line) and '$'(end of line), some problems   
   occurs.   
     Other symbols except ^ and $ are 'really' characters, they can be   
   the weights of the edges, but ^ and $ are not.   
     And I try to match ^ and $ as '\n', and add '\n' to the ends of the   
   text, but it seems not a prefect solution.   
      
     Thanks.   
      
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