Wikimedia Bugzilla is closed!

Typing x<sup>2</sup> is hard, and looks ugly in the markup.  Let's borrow TeX
markup and make x^{2} mean the same thing.  (Brackets would be mandatory, however.)

Examples:

x^{3}      --> x<sup>3</sup>               (powers)
CO_{2}     --> CO<sub>2</sub>              (carbon dioxide symbol)
1^{st}     --> 1<sup>st</sup>              (ordinals)
^{2}H_{2}O --> <sup>2</sup>H<sub>2</sub>O  (isotopes)
y^{x^{2}}  --> y<sup>x<sup>2</sup></sup>   (nested powers)

I can't think of anything this would conflict with, can you?