From: bobduff@shell01.TheWorld.com   
      
   Gene  writes:   
      
   >... The Ada front end of gcc is   
   > entirely hand-written, recursive descent.   
      
   Yes, and the GNAT Ada front end has just about the best syntactic   
   error recovery and syntax error messages I have ever seen in any   
   compiler.   
      
   >... Perl uses yacc (at least through v5) but with a hand-written   
   > tokenizer. Python seems to generate its own parser from a grammar   
   > during startup. Yada yada. At least for production compilers, it's   
   > more of a mixed bag than you infer.   
      
   Yes, it's mixed bag.  There are advantages and disadvantages to   
   either approach.   
      
   - Bob   
      
   --- SoupGate-Win32 v1.05   
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