Clients that use plugin systems may require multiple calls to
XIQueryVersion from different plugins. The current error handling requires
client-side synchronisation of version numbers.
The first call to XIQueryVersion defines the server behaviour. Once cached,
always return that version number to any clients. Unless a client requests a
version lower than the first defined one, then a BadValue must be returned
to be protocol-compatible.
Introduced in 2c23ef83b0
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
ea51e9b287