Add help option to all command !

[hymkor]

By /? , /help , -help or -h

[tomato3713]

I tried to add a help option easily.
(There are some parts where the implementation is not clean, but ...)

master...tomato3713:add-build-in-cmd-help

It works in the following way.

$ pwd -h
Print the current working drive and directory.

$ pwd -help
Usage: pwd -N (N:digit) -L -P

    Print the current working drive and directory.
    Options:
        -N: N is digit. Print the N-previous directory.
        -L: Use PWD from environment, even if it contains symlinks. (default)
        -P: avoid symlinks.

If this works, why not add a help option for commands other than pwd as well?

[hymkor]

Not a bad idea.
But, Nyagos has many commands to change.
It will be late to start changes.

[tomato3713]

Would you like to change commands before adding help option?