Failure to do it may result in strange error messages or even crashes,
in admittedly convoluted cases that are normally syntax errors, like:
    def f(*xx, __debug__): pass

Catch BytesWarning exceptions.

 * Check fs encoding value on Windows
 * Ignore LANG= test on Windows and Mac OS X (fs encoding is hardcoded on these
   platforms)

error handler, or strict error handler on Windows.

 * Rewrite os.fsencode() documentation
 * Improve os.fsencode and os.fsdecode() tests using the new PYTHONFSENCODING
   environment variable

filesystem encoding is not related to sys.sizeof()

(Also fix a name ordering in the ACKS file.)

(the other functions where not affected by the recent change)

filesystem encoding.

initfsencoding() displays also a better error message if get_codeset() failed.

Matthew Ahrens.

Database (Py_UNICODE_TOLOWER, Py_UNICODE_ISDECIMAL, and others) now accept
and return characters from the full Unicode range (Py_UCS4).

The differences from Python code are few:
- unicodedata.numeric(), unicodedata.decimal() and unicodedata.digit()
  now return the correct value for large code points
- repr() may consider more characters as printable.

It is not sure it will be beneficial, though, since process launching is
more expensive under Windows than it is under Linux.

 * Use the current filesystem encoding instead of always using utf-8
 * Enable the test on Mac OS X
 * Use TESTFN_UNENCODABLE and TESTFN_UNICODE instead of arbitrary filenames
 * To decode a filename, use strict error handler instead surrogateescape for
   mbcs encoding (on Windows)
 * Use TESTFN_UNENCODABLE (if available) for the directory name

Skip the test if no non-ascii filename can be created.

... to get the filename as a unicode object, instead of a byte string. Function
needed to support unencodable filenames. Deprecate PyModule_GetFilename() in
favor on the new function.

Encode unicode strings to the terminal encoding with backslashreplace error (as
Python does for sys.stderr) before writing them to sys.stdout. It fixes
UnicodeEncodeError on writing non-ascii characters in an ascii terminal (C
locale: ASCII encoding).

To get links to the C functions