Feature request: Find in list filters

I would find it very useful if, when examining a list filter, I could hit Cmd-F and search the list for a particular string. I’m thinking of something that could pop up like what happens with the Features tab of the Font Info dialog.

So that, if I have some old huge encoding list and I want to find “dotlessi” to change it to “idotless”, for example.

I put it on the list but not very high. You can always copy paste the hole text in the text editor of your choice.