[issue639266] Tkinter sliently discards all backgrond Tcl errors

[Mark Lawrence]

Changes by Mark Lawrence <breamoreboy at yahoo.co.uk>:


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title: Tkinter sliently discards all Tcl errors -> Tkinter sliently discards all backgrond Tcl errors

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue639266>
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