class Cucumber::CucumberExpressions::CantEscape

def initialize(expression, index)
  super(build_message(
            index,
            expression,
            point_at(index),
            "Only the characters '{', '}', '(', ')', '\\', '/' and whitespace can be escaped",
            "If you did mean to use an '\\' you can use '\\\\' to escape it"
        ))
end