class RuboCop::Cop::Style::RedundantStringEscape

def allowed_escape?(node, range)
  escaped = range.source[(1..-1)]
  # Inside a single-quoted string, escapes (except \\ and \') do not have special meaning,
  # and so are not redundant, as they are a literal backslash.
  return true if interpolation_not_enabled?(node)
  # Strictly speaking a few single-letter chars are currently unnecessary to "escape", e.g.
  # d, but enumerating them is rather difficult, and their behavior could change over time
  # with different versions of Ruby so that e.g. /\d/ != /d/
  return true if /[\n\\[[:alnum:]]]/.match?(escaped[0])
  return true if escaped[0] == ' ' && (percent_array_literal?(node) || node.heredoc?)
  return true if disabling_interpolation?(range)
  return true if delimiter?(node, escaped[0])
  false
end