[Bug-gnubg] More problems with edit mode

[Timothy Y. Chow]

What I am about to describe is something that I have unfortunately been 
unable to reproduce on demand.  However, I'm reporting it anyway in case 
someone else has had similar problems.

Sometimes, I will hold down the Ctrl key and drag a checker across the 
board.  In the process of doing so---and I think this tends to happen more 
often when I'm dragging a checker off the bar onto some point---sometimes 
a blot of the opposite color will get "hit" and will jump to the bar.  For 
example, say I Ctrl-drag a black checker from the bar to the 13pt, and 
there happens to be a White blot sitting on the 17pt.  After I release the 
mouse button, the black checker ends up on the 13pt as intended, but the 
White blot will jump from the 17pt to the bar.  I don't have to move over 
the White blot for this to happen, though it seems that the blots that get 
"hit" tend to be approximately "between" the start and end points of the 
drag.

Some other weird things can happen in the process.  I have sometimes ended 
up with 16 checkers of one color on the board.  (It reminds me of a 
sleight-of-hand artist.  Objects pop in and out unexpectedly, and all of a 
sudden there are more objects than you started with!)  At this point 
there's not much I can do other than to reset the board to the initial or 
final position, which usually eliminates the 16th checker.

Tim