class Byebug::Command

def format_subcmds
  header = names.join('|')
  s = "  List of \"#{header}\" subcommands:\n  --\n"
  w = self::Subcommands.map(&:name).max_by(&:size).size
  self::Subcommands.each do |subcmd|
    s += format("  %s %-#{w}s -- %s\n", header, subcmd.name, subcmd.help)
  end
  s + "\n"
end