[antlr-interest] Another composite grammar issue

[Bill Andersen]

I have two lexer grammars, A and B, such that B imports A.  I compile A and get an A.tokens file generated.  Then I compile B.  I expect B.tokens to have all the token definitions in A.tokens.  This works.  But, when I compile B, A.tokens seems to be re-generated and then includes all token definitions from B as well.  In short, after compiling B, B.tokens = A.tokens.

I suspect this isn't correct.