Re: storing mouse-movement events in recent-keys and keyboard macros

[Richard Stallman]

    I'm working on a small patch which will store only the first and the
    last in a series of mouse movements (in the same window) in the
    list, i.e. it would tell you where the move started, where it ended,
    but not how it got there :-)

That seems like a good change.  Also, maybe arrange to notice
when help-echo events are separated only by mouse-movement events
and discard the excess help-echo event anyway.