[PLUG] Trackball middle button pastes string twice

[Richard Owlett]

On 06/05/2017 01:50 PM, Rich Shepard wrote:
>[snip]
>
>    Sometimes the events following the KeymapNotify event are a pair of
> MotionNotify events. There is one ButtonRelease event for pressing the two
> buttons simultaneously. Also, sometimes (not in xev mode) only one copy of
> the string is pasted, but too often there are two with the second appended
> to the end of the first copy.
>

That paragraph reminds me of a problem I had long time ago 
distinguishing single and double clicks -- there was a timing adjustment 
that gave strange symptoms over a certain range. Can't recall if Windows 
or Linux.