boolean function ( char arg0 ) { }
checks if c is a character that may be contained in a prolog predicate name that is enclosed in simple quotes . concode_field_sep PlaceHolder placeHolder concode_field_sep boolean isSingleSecondChar concode_elem_sep boolean isPredicateNameChar concode_elem_sep boolean isVarPrefix concode_elem_sep boolean isVarPrefix concode_elem_sep boolean isNonQualifiedPredicateNameChar concode_elem_sep boolean isNonQuotedPredicateNameChar concode_elem_sep boolean isNormalPredicateNameChar concode_elem_sep boolean isVarChar concode_elem_sep boolean isFunctorPrefix