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bpo-29240: PEP 540: Add a new UTF-8 Mode (#855)

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* Add -X utf8 command line option, PYTHONUTF8 environment variable
  and a new sys.flags.utf8_mode flag.
* If the LC_CTYPE locale is "C" at startup: enable automatically the
  UTF-8 mode.
* Add _winapi.GetACP(). encodings._alias_mbcs() now calls
  _winapi.GetACP() to get the ANSI code page
* locale.getpreferredencoding() now returns 'UTF-8' in the UTF-8
  mode. As a side effect, open() now uses the UTF-8 encoding by
  default in this mode.
* Py_DecodeLocale() and Py_EncodeLocale() now use the UTF-8 encoding
  in the UTF-8 Mode.
* Update subprocess._args_from_interpreter_flags() to handle -X utf8
* Skip some tests relying on the current locale if the UTF-8 mode is
  enabled.
* Add test_utf8mode.py.
* _Py_DecodeUTF8_surrogateescape() gets a new optional parameter to
  return also the length (number of wide characters).
* pymain_get_global_config() and pymain_set_global_config() now
  always copy flag values, rather than only copying if the new value
  is greater than the old value.
This commit is contained in:
Victor Stinner 2017-12-13 12:29:09 +01:00 • committed by GitHub
parent c3e070f849
commit 91106cd9ff
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27 changed files with 598 additions and 183 deletions
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Python/bltinmodule.c
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@ -29,6 +29,9 @@ const char *Py_FileSystemDefaultEncoding = NULL; /* set by initfsencoding() */
int Py_HasFileSystemDefaultEncoding = 0;
#endif
const char *Py_FileSystemDefaultEncodeErrors = "surrogateescape";
/* UTF-8 mode (PEP 540): if non-zero, use the UTF-8 encoding, and change stdin
and stdout error handler to "surrogateescape". */
int Py_UTF8Mode = 0;
_Py_IDENTIFIER(__builtins__);
_Py_IDENTIFIER(__dict__);