class Byebug::CommandProcessor

def one_cmd(commands, context, input)
  if cmd = commands.find{ |c| c.match(input) }
    if context.dead? && cmd.class.need_context
      print "Command is unavailable\n"
    else
      cmd.execute
    end
  else
    unknown_cmd = commands.find{ |c| c.class.unknown }
    if unknown_cmd
      unknown_cmd.execute
    else
      errmsg "Unknown command: \"#{input}\".  Try \"help\".\n"
    end
  end
end