Some field values in the Xauthority file have special meanings:
- a value of 65535 in the 'family' field means that the entry will
match a connection of any family on any address
- an empty string in the 'display number' field means that the entry
will match a connection on any display number
This behaviour is documented at:
https://cgit.freedesktop.org/xorg/lib/libXau/tree/AuGetBest.c#n109
aarzilli
Paul Sbarra
Andrew Gallant (Ocelot)