[issue29125] Shell injection via TIX_LIBRARY when using tkinter.tix

[Larry Hastings]

Larry Hastings added the comment:

I don't understand the fix.  Does this really prevent the injection?

I would fix it this way:

    if tixlib is not None and os.path.exists(tixlib):

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29125>
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