[docs] [issue12731] python lib re uses obsolete sense of \w in full violation of UTS#18 RL1.2a

[Ezio Melotti]

Ezio Melotti <ezio.melotti at gmail.com> added the comment:

The failing re tests after PEP 393 are:
FAIL lib re found non alphanumeric string  'cafe'
FAIL lib re found non alphanumeric string  'Ⓚ'
FAIL lib re found non alphanumeric string  ''
FAIL lib re found non alphanumeric string  ''
FAIL lib re found non alphanumeric string  'connector‿punctuation'
FAIL lib re found non alphanumeric string  'Ὰ_Στο_Διάολο'
FAIL lib re found non alphanumeric string  '𐌰𐍄𐍄𐌰‿𐌿𐌽𐍃𐌰𐍂‿𐌸𐌿‿𐌹𐌽‿𐌷𐌹𐌼𐌹𐌽𐌰𐌼'
FAIL lib re found all alphanumeric string  '¹²³'
FAIL lib re found all alphanumeric string  '₁₂₃'
FAIL lib re found all alphanumeric string  '¼½¾'
FAIL lib re found all alphanumeric string  '⑶'

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