Hi Xorg, in this FVWM issue:
https://github.com/fvwmorg/fvwm3/issues/861 bits 13 and 14 encoding the XKB group index in event->xkey.state on behalf of the XKB extension interfere with FVWM's modifier handling. At least that is what I have understood so far from my tests and https://www.x.org/releases/X11R7.6/doc/libX11/specs/XKB/xkblib.html#xkb_state_to_core_protocol_state_transformation Is there anything better than just masking out bits 13 and 14 in event->xkey.state as I have proposed as solution for that issue? Is there some constant that represents these two bits? I have tried searching the Xorg sources and the web but couldn't find anything more enlighting than above section in the XKB library specification. Thanks