LexBasic.g4:136:15: reference to undefined rule: DOT

[ghost]

The fragment Dot is defined, not the fragment DOT, I think that is an error

[teverett]

in which grammar directory is this problem?

[ghost]

It is a problem in ANTLRv4Lexer.g4, it imports Lexbasic.g4, when using the antlr-grammar this problem occurred.

[teverett]

Is this still a problem? I see this in LexBasic.g4

fragment Dot : '.' ;

and this in ANTLRv4Lexer.g4

DOT : Dot ;

So "DOT" is defined as "Dot" which is defined as "'.'". I think it's ok like this?