class Byebug::UpCommand

def description
  %{up[ count]\tmove to higher frame}
end

def execute
  pos = get_int(@match[1], "Up")
  return unless pos
  adjust_frame(pos, false)
end

def names
  %w(up)
end

def regexp
  /^\s* u(?:p)? (?:\s+(.*))?$/x
end