File: //usr/lib64/python2.7/site-packages/mercurial/posix.pyc
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>>> for f in [b'/absolute/path/to/file',
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... b'path/to/directory/',
... b'/multiple/path//separators',
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... b'']:
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Check whether the given path is on a filesystem with UNIX-like exec flags
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Normalize a filename for OS X-compatible comparison:
- escape-encode invalid characters
- decompose to NFD
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- omit ignored characters [200c-200f, 202a-202e, 206a-206f,feff]
>>> normcase(b'UPPER')
'upper'
>>> normcase(b'Caf\xc3\xa9')
'cafe\xcc\x81'
>>> normcase(b'\xc3\x89')
'e\xcc\x81'
>>> normcase(b'\xb8\xca\xc3\xca\xbe\xc8.JPG') # issue3918
'%b8%ca%c3\xca\xbe%c8.jpg'
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