Capturing only works only works if protocol is exposed as false intially under Firefox

[Thaodan]

Hey, I've noticed that registering the protocol only works for me with Firefox (104) if I first expose the org-protocol with false and then click a link with the org-protocol like this:
data:text/html,<a href="org-protocol://resolve?domain=Bold">Link</a>

Source:
https://www.reddit.com/r/firefox/comments/6p6470/comment/dpap5ok/?context=3

[alphapapa]

Hi,

I'm not sure I completely understand. Are you proposing an update to the documentation?

[Thaodan]

Yes. While I'm not exactly sure why this has happened but for my case this was needed to have the protocol recognized.

[alphapapa]

Ok, feel free to send a pull request for the readme. Please mention this in a separate paragraph so it's clear that we're not sure whether it's always necessary.

[stefan2904]

Since I needed to configure a fresh Firefox, I just tried to reproduce this. After setting network.protocol-handler.expose.org-protocol to false (and no other org-protocol related flags), and using your html, I end up with this dialog, where clicking on the right button does not open any further dialogs and nothing is invoked:

Than I noticed that firefox automatically figured out which desktop entry to use (probably using xdg):

But opening any org-protocol link still does not invoke it. (manually invoking xdg-open "org-protocol://foo" works.)