Revert "bpo-34589: Add -X coerce_c_locale command line option (GH-9378)" (GH-9430)

* Revert "bpo-34589: Add -X coerce_c_locale command line option (GH-9378)"

This reverts commit dbdee0073cf0b88fe541980ace1f650900f455cc.

* Revert "bpo-34589: C locale coercion off by default (GH-9073)"

This reverts commit 7a0791b6992d420dc52536257f2f093851ed7215.

* Revert "bpo-34589: Make _PyCoreConfig.coerce_c_locale private (GH-9371)"

This reverts commit 188ebfa475a6f6aa2d0ea14ca8e1fbe7865b6d27.

2 files changed, 1 insertions, 22 deletions

diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index cd3b241..b61df8a 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -438,22 +438,13 @@ Miscellaneous options
      * Set the :attr:`~sys.flags.dev_mode` attribute of :attr:`sys.flags` to
        ``True``
 
-   * ``-X utf8`` enables UTF-8 mode (:pep:`540`) for operating system interfaces, overriding
+   * ``-X utf8`` enables UTF-8 mode for operating system interfaces, overriding
      the default locale-aware mode. ``-X utf8=0`` explicitly disables UTF-8
      mode (even when it would otherwise activate automatically).
      See :envvar:`PYTHONUTF8` for more details.
    * ``-X pycache_prefix=PATH`` enables writing ``.pyc`` files to a parallel
      tree rooted at the given directory instead of to the code tree. See also
      :envvar:`PYTHONPYCACHEPREFIX`.
-   * ``-X coerce_c_locale`` or ``-X coerce_c_locale=1`` tries to coerce the C
-     locale (:pep:`538`).
-     ``-X coerce_c_locale=0`` skips coercing the legacy ASCII-based C and POSIX
-     locales to a more capable UTF-8 based alternative.
-     ``-X coerce_c_locale=warn`` will cause Python to emit warning messages on
-     ``stderr`` if either the locale coercion activates, or else if a locale
-     that *would* have triggered coercion is still active when the Python
-     runtime is initialized.
-     See :envvar:`PYTHONCOERCECLOCALE` for more details.
 
    It also allows passing arbitrary values and retrieving them through the
    :data:`sys._xoptions` dictionary.
@@ -473,9 +464,6 @@ Miscellaneous options
    .. versionadded:: 3.7
       The ``-X importtime``, ``-X dev`` and ``-X utf8`` options.
 
-   .. versionadded:: 3.7.1
-      The ``-X coerce_c_locale`` option.
-
    .. versionadded:: 3.8
       The ``-X pycache_prefix`` option.
 
@@ -862,8 +850,6 @@ conflict.
    order to force the interpreter to use ``ASCII`` instead of ``UTF-8`` for
    system interfaces.
 
-   Also available as the :option:`-X` ``coerce_c_locale`` option.
-
    Availability: \*nix
 
    .. versionadded:: 3.7
diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst
index 6cd9d46..f53a026 100644
--- a/Doc/whatsnew/3.7.rst
+++ b/Doc/whatsnew/3.7.rst
@@ -2494,10 +2494,3 @@ versions, it respected an ill-defined subset of those environment variables,
 while in Python 3.7.0 it didn't read any of them due to :issue:`34247`). If
 this behavior is unwanted, set :c:data:`Py_IgnoreEnvironmentFlag` to 1 before
 calling :c:func:`Py_Initialize`.
-
-:c:func:`Py_Initialize` and :c:func:`Py_Main` cannot enable the C locale
-coercion (:pep:`538`) anymore: it is always disabled. It can now only be
-enabled by the Python program ("python3).
-
-New :option:`-X` ``coerce_c_locale`` command line option to control C locale
-coercion (:pep:`538`).