[issue4676] python3 closes + home keys

[Weeble]

Weeble <clockworksaint at gmail.com> added the comment:

I have experienced similar problems in Python 2.6.1 on Windows, and
found them to be due to Tk 8.5. I posted my findings here:

http://mail.python.org/pipermail/idle-dev/2009-January/002738.html

In summary, Tk 8.5 changed the name of the "anchor" mark to be unique to
each Text widget. The code to make the home key toggle between column 0
and the start of the text tries to make use of the "anchor" mark and
gets confused.

In the email I proposed a simple fix which I'm testing out right now.
Should I attach it as a patch?

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nosy: +weeble

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