That's not working for me. I'm typing this in the file list. It doesn't look like it thinks that a '~' is a command. The bar doesn't turn purple like when i put a *
You need Partial Matching to be turned off, otherwise it turns into ~(anything) which will match everything.
I don't think you can turn off partial matching for the Find-As-You-Type field but you can turn it off in the toolbar filter box (and in the Filter Bar in Opus 10).