[issue2142] difflib.unified_diff(...) produces invalid patches

[Ray.Allen]

Ray.Allen <ysj.ray at gmail.com> added the comment:

This is really a bug, but why it's not fixed during such a long time?

Since trentm's python_difflib_no_eol.patch patch failed against the current trunk, I modified it to work again, also a patch against py3k.

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nosy: +ysj.ray
Added file: http://bugs.python.org/file17332/issue_2142_trunk.diff

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