XkbSetRepeatKeys works for setting global key repeat but it doesn't work for setting repeat rate for individual keys.

We're directly setting the structs now:

        /* Turn off key-repeat for modifier keys, on for others */
        /* First set them all on */
        for(i=0; i < XkbPerKeyBitArraySize; i++)
            ctrl->per_key_repeat[i] = -1;

        /* Now turn off the modifiers */
        for(i=0; i < 32; i++) {
            unsigned char keycode;
            
            keycode = keyInfo.modifierKeycodes[i][0];
            if(keycode)
                ClearBit(ctrl->per_key_repeat, keycode + MIN_KEYCODE);

            keycode = keyInfo.modifierKeycodes[i][1];
            if(keycode)
                ClearBit(ctrl->per_key_repeat, keycode + MIN_KEYCODE);
        }

And that didn't quite work... some random bits would not get set the way I wanted, but then we threw this bit of kludge in:

        /* Hurray for data duplication */
        if (pDev->kbdfeed)
            memcpy(pDev->kbdfeed->ctrl.autoRepeats, ctrl->per_key_repeat, XkbPerKeyBitArraySize);