[docs] [issue11186] pydoc: HTMLDoc.index() doesn't support PEP 383

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

Oops, my isUndecodableFilename() example is wrong. PEP 383 only uses U+DC80..U+DCFF range:

def isUndecodableFilename(filename):
  return any((0xDC80 <= ord(ch) <= 0xDCFF) for ch in filename)

Example of undecodable filename: b'bla\xe9\xff.py' with UTF-8 filesystem encoding is decoded as 'bla\uDCE9\uDCFF.py'.

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