[antlr-interest] Syntactic predicate in lexer rule

[Terence Parr]

On Jan 1, 2006, at 7:01 PM, Martin Traverso wrote:
> FLOAT:  (DIGITS '.' DIGITS) => DIGITS '.' DIGITS;

An alt with a single pred makes no sense, I'm afraid.  Predicates  
indicate which of 2+ alts to match.

Ter