@Leo is about getting values for script/Evaluator columns (mostly related tothis post. )
AFAIK, besides abusing Rename Scripts, there's no other way to obtain those values for that purpose. And I was using Evaluator Val() function to embed code (using {=..=}) precisely because with that you can obtain the value without characters being replaced or filtered. And to avoid having to run multiple "renames", I group them into a single pattern to use in a preset. But sometimes the problems mentioned above happens.
I think being able to get the value of a script/Evaluator column via scripting without having to resort to these "tricks" would be very welcome.