module Byebug::ThreadFunctions

def parse_thread_num(subcmd, arg)

def parse_thread_num(subcmd, arg)
  if '' == arg
    errmsg "\"#{subcmd}\" needs a thread number"
    nil
  else
    thread_num = get_int(arg, subcmd, 1)
    return nil unless thread_num
    get_context(thread_num)
  end
end