[antlr-interest] funny error message

[Terence Parr]

Thanks guys.  good work.  I have change the error msg templates:

UNREACHABLE_ALTS(alts) ::= <<
The following alternatives can never be matched: <alts; separator=",">< 
\n>
 >>

UNREACHABLE_TOKENS(tokens) ::= <<
The following token definitions can never be matched because prior  
tokens match the same input: <tokens; separator=",">
 >>

pushed to depot.

Ter