[issue22364] Improve some re error messages using regex for hints

[Terry J. Reedy]

Terry J. Reedy added the comment:

I already said we should either stick with what we have if better (and gave examples, including sticking with 'cannot') or possibly combine the best of both if we can improve on both.  13 should use 'bytes-like' (already changed?). There is no review button.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22364>
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