Instead of setting a global variable and using it once in one line of code wouldn't it be more beneficial to just take the contents of the variable and place it where it is used, and take out the whole variable all together? This in particular applies to %url %reg and %nick. I am still trying to find out where exactly you use %nick because i can't find one instance of it other than stating it.

The way I look at it is the fewer variables the better. I usually go the extra mile to use hash tables just to avoid them. Although for smaller stuff it is unavoidable. :[ /var > /set