[BUGLET] Short form of options with an optional parameter are not very clear

I just stumbled over the "git status -uno" form, and it took me some time to realize that "no" was a parameter to -u, rather than aggregated (and undocumented) -n and -o.

Whereas the manpage does document the "-u[<mode>]" syntax, which dissipate the misunderstanding, --help output does not, listing "-u" in a way that appears not to take any option.

Looks like the --help output would gain from having the optional parameter displayed in the short form...