public static boolean isInvalidChar(char c) {
		if (c < ' ') { // non-printable ASCII
			return true;
		}

		for (char element : INVALIDCHARS) {
			if (c == element) {
				return true;
			}
		}
		return false;
	}
Returns true if the specified char
is not valid for use in a symbol name
@param c the character to be tested as a valid symbol character.
@return return true if c is an invalid char within a symbol name, else false
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/symbol/SymbolUtilities.java