[issue20491] textwrap: Non-breaking space not honored

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

The code of the textwrap module was changed since publishing the last patch. Proposed patch resolves conflicts and addresses Eric's comments.

Maybe add breaking Unicode spaces (OGHAM SPACE MARK, EN QUAD, etc) to _whitespace?

I think in future we should implement the Unicode line breaking algorithm [1].

[1] http://www.unicode.org/reports/tr14/

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Added file: http://bugs.python.org/file44968/honor-non-breaking-spaces2.patch

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