Can your fucking language do this?

http://perl6advent.wordpress.com/2012/12/18/day-18-formulas-resistance-is-futile/


Seriously, i really want to know if there are some "real world" languages that can implement such syntax "extensions"

>>4
I know that any language can implement a text parser for any expression. That's not a big deal. I'm not talking about that. I'm talking about "extending" the language for understanding such expressions.