[issue10639] reindent.py converts newlines to platform default

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

I did a bit of testing on demo files.  The first one I tested with had mixed EOLs, in which case the newlines attribute will be a tuple and open(..., newline=r.newlines) will fail.  For reference: http://docs.python.org/dev/library/io#io.TextIOBase.newlines

What would be the best behavior in such cases?  Refuse the temptation to guess and exit?

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nosy: +pitrou
status: pending -> open

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