Support for <(sub|sup)> (Was: [this] as a synonym for [this][])

[John Gruber]

Jelks Cabaniss <jelks at jelks.nu> wrote on 04/04/05 at 7:07pm:

>   Ba^2+^ + OH^-^
> 
> would be equivalent to
> 
>   Ba[^2+^] + OH[^-^]

I think you need to abandon your idea that [ and ], with additional
interior punctuation, can be used to delimit any additional syntax.

They're used for links, and and they're used for images, and that's
it for brackets.

-J.G.