[issue43689] difflib: mention other "problematic" characters in documentation

[Jürgen Gmach]

New submission from Jürgen Gmach <juergen.gmach at googlemail.com>:

In the documentation you can currently read for the "?"-output:

"These lines can be confusing if the sequences contain tab characters."

>From first hand experience :-), I can assure it is also very confusing for other types of whitespace characters, such as spaces and line breaks.

I'd like to add the other characters to the documentation.

----------
assignee: docs at python
components: Documentation
messages: 389961
nosy: docs at python, jugmac00
priority: normal
pull_requests: 23879
severity: normal
status: open
title: difflib: mention other "problematic" characters in documentation
versions: Python 3.10, Python 3.6, Python 3.7, Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43689>
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