are mathematical operations part of the exempt list like a regular expression or a space? specifically =, +, -, *, /, ^ and % ? (equals, add, subtract, multiply, divide, power, modulus)
say: var %a = %b + %c
This is native mIRC functionality.
Also: what about regsubex with the use of markers, obviously \0 is out of the question because it contains a digit, but does the replacement part also fall into the realm of the exempt list or just the expression itself?