Changing
if efam == family and eaddr == address and num == enum:
to
if efam == family and eaddr == address and (num == enum or
enum == ""):
in get_best_auth() in Xlib/xauth.py appears to be an effective
fix/workaround; this allows an Xauthority entry with a missing display
number to match any display.
Alternatively, and slightly more conservatively, adding:
if enum == "" and ename not in matches:
enum = num
before the original line will match the entry only if a display-specific
entry is not also present in the Xauthority file.
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https://bugs.launchpad.net/bugs/1885304
Title:
Python Xlib applications report 'Can't connect to display ":0": No
protocol specified' if XAUTH authentication is needed
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