Support for digits/number in short/longName parameters

[KoalaBear84]

Just found out that a parameter like -1 does not work.

Is it intentional? :)

[SergeantSerk]

Wow I just came across the same thing, is short parameter digits not supported at all? I haven't really inspected the code but I don't see why it isn't supported.

For example, I'm trying to parse -4 and -6 to represent IPv4 and IPv6 respectively but these are coming up as false regardless.