Negative options don't display well in --help output

[cgay]

This option

  add-option(parser,
             make(<flag-option>,
                  names: #("show-tests", "t"),
                  negative-names: #("quiet", "q"),
                  default: #t,
                  help: "Show each test result as tests complete."));

is displayed like this:

  -t, -q, --show-tests, --quiet   Show each test result as tests complete.

It should somehow make clear which options turn off the flag and which turn it on.

[cgay]

Also, the list of option names needs to have a maximum width because -t, -q, --show-tests, --quiet pushes the bulk of the help text way over to the right. Would be nice to have a library for producing columnar text output that makes this easier.