class Reline::KeyStroke

def match_status(input)
  matching = key_mapping.matching?(input)
  matched = key_mapping.get(input)
  if matching && matched
    MATCHING_MATCHED
  elsif matching
    MATCHING
  elsif matched
    MATCHED
  elsif input[0] == ESC_BYTE
    match_unknown_escape_sequence(input, vi_mode: @config.editing_mode_is?(:vi_insert, :vi_command))
  else
    s = input.pack('c*').force_encoding(@encoding)
    if s.valid_encoding?
      s.size == 1 ? MATCHED : UNMATCHED
    else
      # Invalid string is MATCHING (part of valid string) or MATCHED (invalid bytes to be ignored)
      MATCHING_MATCHED
    end
  end
end