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/Include/sysmodule.h b/Include/sysmodule.h
index e43f378..c00901b 100644
--- a/Include/sysmodule.h
+++ b/Include/sysmodule.h
@@ -27,6 +27,9 @@
PyAPI_FUNC(void) PySys_AddWarnOptionUnicode(PyObject *);
PyAPI_FUNC(int) PySys_HasWarnOptions(void);
+PyAPI_FUNC(void) PySys_AddXOption(const wchar_t *);
+PyAPI_FUNC(PyObject *) PySys_GetXOptions(void);
+
#ifdef __cplusplus
}
#endif