DEBUGGER__.thread_list

# File tmp/rubies/ruby-3.0.5/lib/debug.rb, line 1003
def thread_list(num)
  th = get_thread(num)
  if th == Thread.current
    @stdout.print "+"
  else
    @stdout.print " "
  end
  @stdout.printf "%d ", num
  @stdout.print th.inspect, "\t"
  file = context(th).instance_eval{@file}
  if file
    @stdout.print file,":",context(th).instance_eval{@line}
  end
  @stdout.print "\n"
end