Thanks for sharing this. I'm not on Gnome and don't need the option to choose an application every time I click on a link or a file. Nevertheless, seeing how other people approach a similar problem is interesting.

Looking through the source code briefly, it seems like it's almost a full re-implementation of `xdg-open`. My solution is in a different league. I didn't mean to replace `xdg-open` and aimed to augment `xdg-open` while being as simple as possible.