I have a lexer rule listing all the acceptable symbols:
ALL_SYMBOLS: ('!' | '#' | '%' | '^' | '-' | '+' | '=' | '<' | '>'
| ',' | '.' |'?' | '/' | '*' ); // and more......
But sometimes I also want a parser rule to match all symbols except
say "! #", "+ =" or "+ - * /". Because I have different needs at
different time, I want to specify a rule using ALL_SYMBOLS except some
symbols. How should one write such a rule?
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