[issue12178] csv writer doesn't escape escapechar

[Skip Montanaro]

Skip Montanaro added the comment:

The patch looked okay to me, and when applied to the 2.7 source, the new tests pass muster.

I'm not going to pretend I know where this patch should be applied. That's for someone else to pronounce.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue12178>
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