Firefox on Ubuntu saves it as a .txt file. Changing it to .url causes Nautilus to recognise it as an Internet Shortcut, but it still opens in the Text Editor by

Firefox on Ubuntu saves it as a .txt file. Changing it to .url causes Nautilus to recognise it as an Internet Shortcut, but it still opens in the Text Editor by default. I can choose to open it in Firefox, but Firefox has no idea what to do with it, and just tries to save it.