class RSpec::Matchers::MultiMatcherDiff

def diffs(differ)
  @expected_list.map do |(expected, diff_label, actual)|
    diff = differ.diff(actual, expected)
    next if diff.strip.empty?
    if diff == "\e[0m\n\e[0m"
      "#{diff_label}\n" \
        "  <The diff is empty, are your objects producing identical `#inspect` output?>"
    else
      "#{diff_label}#{diff}"
    end
  end.compact.join("\n")
end