Issue #10089: Add support for arbitrary -X options on the command-line.
They can be retrieved through a new attribute `sys._xoptions`.
diff --git a/Doc/c-api/sys.rst b/Doc/c-api/sys.rst
index 232cec0..252bd1a 100644
--- a/Doc/c-api/sys.rst
+++ b/Doc/c-api/sys.rst
@@ -127,6 +127,21 @@
.. versionadded:: 3.2
+.. c:function:: void PySys_AddXOption(const wchar_t *s)
+
+ Parse *s* as a set of :option:`-X` options and add them to the current
+ options mapping as returned by :c:func:`PySys_GetXOptions`.
+
+ .. versionadded:: 3.2
+
+.. c:function:: PyObject *PySys_GetXOptions()
+
+ Return the current dictionary of :option:`-X` options, similarly to
+ :data:`sys._xoptions`. On error, *NULL* is returned and an exception is
+ set.
+
+ .. versionadded:: 3.2
+
.. _processcontrol: