metaKeyState function
Implementation
Function metaKeyState(Lexer lexer) {
lexer.take(["#", " "]);
lexer.ignore();
String chr = lexer.next();
while (!isColonTerminator(chr)) {
chr = lexer.next();
}
lexer.rewind();
lexer.emit(TokenType.MetaKey);
return metaValueState;
}