Textwrap to conform to UAX #14

[JulienPalard]

BPO	41975
Nosy	@JulienPalard, @verhovsky

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-10-08.13:19:58.790>
labels = ['library']
title = 'Textwrap to conform to https://www.unicode.org/reports/tr14/tr14-45.html'
updated_at = <Date 2021-02-22.14:17:30.356>
user = 'https://github.com/JulienPalard'

bugs.python.org fields:

activity = <Date 2021-02-22.14:17:30.356>
actor = 'boris'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-10-08.13:19:58.790>
creator = 'mdk'
dependencies = []
files = []
hgrepos = []
issue_num = 41975
keywords = []
message_count = 1.0
messages = ['378247']
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priority = 'normal'
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status = 'open'
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url = 'https://bugs.python.org/issue41975'
versions = []

[JulienPalard]

Currently it looks like our textwrap.fill implementation does not conforms to the Unicode Line Breaking Algorithm from the unicode standard.

Should this be enhanced?

If so, as a sidenote, it could be nice to have the override parameter of libunistring 1 to prohibit line breaking at specific places where the algorithm would normally break but where a human don't expect it to.

[arhadthedev]

@malemburg, @ezio-melotti, @benjaminp (as Unicode experts)