[issue22619] Possible implementation of negative limit for traceback functions

[Dmitry Kazakov]

Changes by Dmitry Kazakov <jsbfox at gmail.com>:


Added file: http://bugs.python.org/file36899/9cb7aaad1d85.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22619>
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