[antlr-interest] Match A with exception of B .....how do I do that?

[Vlastimil Adamovsky]

Thank you Johannes,
 
I am still wrestling with ANLR and learning the secret ways ....:)))
You write: 
 
"but for better error messages it is recommend just to match the superset
and to check in the parser for incorrect characters."
 
How do I do that? BTW, yor suggestion with "C : (~B)=> A;" did not work for me, 
but it is possible it is all my fault. I like your second suggestion better, but don't know how 
do it.......I find the ANTLR an amazing software, but still it takes time to "get it"...
 
Vlastimil 



      
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