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bpo-42236: Enhance init and encoding documentation (GH-23109)

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Enhance the documentation of the Python startup, filesystem encoding
and error handling, locale encoding. Add a new "Python UTF-8 Mode"
section.

* Add "locale encoding" and "filesystem encoding and error handler"
  to the glossary
* Remove documentation from Include/cpython/initconfig.h: move it to
  Doc/c-api/init_config.rst.
* Doc/c-api/init_config.rst:

  * Document command line options and environment variables
  * Document default values.

* Add a new "Python UTF-8 Mode" section in Doc/library/os.rst.
* Add warnings to Py_DecodeLocale() and Py_EncodeLocale() docs.
* Document how Python selects the filesystem encoding and error
  handler at a single place: PyConfig.filesystem_encoding and
  PyConfig.filesystem_errors.
* PyConfig: move orig_argv member at the right place.
This commit is contained in:
Victor Stinner 2020-11-02 16:49:54 +01:00 • committed by GitHub
parent 301822859b
commit 4b9aad4999
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19 changed files with 735 additions and 520 deletions
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11
Doc/c-api/unicode.rst
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@ -783,7 +783,7 @@ system.
:c:data:`Py_FileSystemDefaultEncoding` (the locale encoding read at
Python startup).
This function ignores the Python UTF-8 mode.
This function ignores the :ref:`Python UTF-8 Mode <utf8-mode>`.
.. seealso::
@ -819,7 +819,7 @@ system.
:c:data:`Py_FileSystemDefaultEncoding` (the locale encoding read at
Python startup).
This function ignores the Python UTF-8 mode.
This function ignores the :ref:`Python UTF-8 Mode <utf8-mode>`.
.. seealso::
@ -878,8 +878,7 @@ conversion function:
.. c:function:: PyObject* PyUnicode_DecodeFSDefaultAndSize(const char *s, Py_ssize_t size)
Decode a string using :c:data:`Py_FileSystemDefaultEncoding` and the
:c:data:`Py_FileSystemDefaultEncodeErrors` error handler.
Decode a string from the :term:`filesystem encoding and error handler`.
If :c:data:`Py_FileSystemDefaultEncoding` is not set, fall back to the
locale encoding.
@ -899,8 +898,8 @@ conversion function:
.. c:function:: PyObject* PyUnicode_DecodeFSDefault(const char *s)
Decode a null-terminated string using :c:data:`Py_FileSystemDefaultEncoding`
and the :c:data:`Py_FileSystemDefaultEncodeErrors` error handler.
Decode a null-terminated string from the :term:`filesystem encoding and
error handler`.
If :c:data:`Py_FileSystemDefaultEncoding` is not set, fall back to the
locale encoding.