[issue32097] doctest does not consider \r\n a <BLANKLINE>

[Terry J. Reedy]

Change by Terry J. Reedy <tjreedy at udel.edu>:


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versions:  -Python 3.4, Python 3.5, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32097>
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