module Byebug::ThreadFunctions

def parse_thread_num(subcmd, arg)
  return errmsg("\"#{subcmd}\" needs a thread number") if '' == arg
  thread_num, err = get_int(arg, subcmd, 1)
  return errmsg(err) unless thread_num
  Byebug.contexts.find { |c| c.thnum == thnum }
end