Maybe issue:Blank chars is removed when call RuleContext.getText() and ParseTree.getText()

[Flying Xu]

Hello, I use antlr v4 for parse my sql statement, such as "select a a a from b", but I got following error message:
"no viable alternative at input: 'selectaaafromb' " // blank chars between tokens is removed.
"select a a a from b" ----call getText()---> "selectaaafromb"
I debug the code and found this:

I create a subclass by override method: 'getText(Interval interval)', it's solved.
Same issue in code: RuleContent.getText();

It is better for add a blank char between tokens when assemble text?

sorry for I am not good at English.

Kind regards

flying