[MACTCL] Scrollbar generates <Expose> events under Aqua 8.6?

[Tim B. <tn...@sh...>]

Can someone confirm the following behavior under CVS Aqua 8.6:
Source the script below.
Click and hold the scrollbar thumb -> prints <Expose> message
Release the scrollbar thumb -> prints another <Expose> message
Click and drag the scrollbar thumb -> prints multiple <Expose> messages

This is unrelated to  ID:3086887 "Aqua <Expose> events redraw whole 
subwindow"
even though subwindows are getting redrawn just be clicking in the 
scrollbar.

-- Tim Baker

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toplevel .t
frame .t.f -width 200 -height 200
scrollbar .t.f.v -orient vertical
.t.f.v set 0.0 0.1
pack .t.f -expand yes -fill both
pack .t.f.v -side right -fill y
pack propagate .t.f false
bind all <Expose> { puts "Expose %W %x %y %w %h" }