I've been trying to find a way to communicate between termux work and android apps, and eventually stumbled across xdg-open, which in Linux "opens a file or URL in the user's preferred application". I have a test html file in my termux area that I'd like to open in Firefox -- which I've set as my default. However if I invoke xdg-open on it, it only gives me a choice of Chrome, plus some other irrelevant options. Anyone know what's going on here -- and how to get what I want?