[issue32775] fnmatch.translate() can produce a pattern which emits a nested set warning

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

It is easy to fix sets starting with '['. It is more hard to fix sets with doubled '-', '&', '|' or '~'.

>>> fnmatch.fnmatch('#', '[#--]')
/home/serhiy/py/cpython/Lib/fnmatch.py:46: FutureWarning: Possible set difference at position 6
  return re.compile(res).match
True

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assignee:  -> serhiy.storchaka
priority: normal -> high

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<https://bugs.python.org/issue32775>
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