There is a to_lower_case extension available now. I have a use case that would utilize to_upper_case and would like to see it supported. Specifically I am wanting to filter when the entire line is uppercase. I can filter for lower (@==to_lower_case(@)) or mixed case (!(@==to_lower_case(@))) but I can't match on an all uppercase string.

I would like the to_upper_case function to be supported.