[antlr-interest] Reg Multi-line comments

[Gavin Lambert]

At 00:34 17/07/2009, Michael wrote:
 >> MLB : '/*' ( options { greedy = false; } : .* )
 >> ( '*/' | { print error message }
 >> { skip(); }
 >> ;
 >>
 >> You might need EOF rather just empty alt.
 >
 >I tried that too and it gives an error:

The problem here is that with the end text potentially empty the 
wildcard will consume all input.  You need to use Jim's suggested 
replacement for the wildcard as well in order to limit the scope.

Or another alternative replacement:

MLB : '/*' (~'*' | '*' ~'/')*
       ( '*/' | { print error message }
       { skip(); }
   ;

You *might* need to change ~'*' above to ~('*' | EOF), but I think 
it's ok as is.