I want to debug a program's behaviour when the user has no default web browser set, but I'm not sure how I'd return to this state after setting one. I know that I can set my default browser via xdg-settings set default-web-browser <value>, but what if I want to unset it, i.e., make it so that I don't have a default browser?
So far I've tried running
$ xdg-settings set default-web-browser ''
Which resulted in
xdg-settings: no parameter value given
I also tried
$ xdg-settings set default-web-browser ' '
Which resulted in
xdg-settings: invalid application name
I'm using a minimal installation of Alpine Linux running i3 in X.Org.