I just stumbled on a very strange little bug (that may or may not be worth the time to fix).
If you evaluate
r (lower case R, no quotes or anything), in the text console, or in a parameter expression, or anywhere else, it evaluates to the string “zip”.
To reproduce it, just type “r” into the console and hit enter, or use it as the expression in an Eval DAT.
My guess is that it is a temporary variable that somehow leaked into the global namespace from some script somewhere. If it can be located, it would just need to be cleared out with
del r after it’s done being used. It doesn’t seem to be in the