this one is in SmaCC. I'll see if I can switch to your solution.I had a look at Nautilus add protocol for fun. 2303 entries for a subclass of MorphTreeModel :( I reduce that to 11 entries in AltBrowser add protocol for the same use case.
:( Same feeling here but we will live with it for now. I started to change to the feel of the pop up. Stef