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