[issue13301] the script Tools/i18n/msgfmt.py allows arbitrary code execution via po files

[Ezio Melotti]

Changes by Ezio Melotti <ezio.melotti at gmail.com>:


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nosy: +barry, benjamin.peterson, ezio.melotti, georg.brandl
stage:  -> patch review
versions:  -Python 2.6, Python 3.1, Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13301>
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