xdg-open doesn't allow more than 64 characters after the protocol:// part

This may actually not be a bug I guess but I still think it's a bit strange.

Our application is using quite a lot more than 64 characters there so I'm wondering whether we're breaking some standard (I can't find anything about what the length can be).

But at least our problem is that our application does not launch properly which may be our own fault but in case it's not I wanted to check whether this 64 character limitation is actually based on some specification somewhere or whether this is just a random decision and if so, whether this length should perhaps be increased?