search regex for the Category Description field

First, thank you for this incredible plugin. I’ve been using it for years!

For a while I’ve been wanting a way to search and replace the text in the category descriptions of my site’s many categories. I haven’t figured out how to do something like this with Search Regex. I’m hoping there still might be a way. Meanwhile, I’m going to try and build such a tool from scratch — if only to learn something new.

Thank you again, Aharon