I see everyone using /wait 2.5 (for example) to script macros for battle combos, but the problem is the use of food changes this number and makes it more dynamic.

Is there any variable one can use to reference the Global Cooldown vs. a hardcoded number? For example:

/wait [timer-gcd]

Or something along those lines?

Or is there another, more efficient wait to macro a combination of moves other than /ac and /wait?