[issue36152] IDLE: Remove close_when_done from colorizer close()

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

Thanks for digging up the history.  I would have approved without, but feel better with.  Using the colorizer close method to close a window seemed flakey to me, and it seems someone else thought the same long ago.  I suspect the machinery was left to avoid breaking external uses.  PEP 434 changed this avoidance being *necessary*.  (I am sure I have seen a SO answer with percolator + colorizer, as in turtledemo.)

IDLE has had a too many shutdown bugs and still has some.  Not adding one was my main concern when reviewing.

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<https://bugs.python.org/issue36152>
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