#10542: Add 4 macros to work with surrogates: Py_UNICODE_IS_SURROGATE, Py_UNICODE_IS_HIGH_SURROGATE, Py_UNICODE_IS_LOW_SURROGATE, Py_UNICODE_JOIN_SURROGATES.
diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index a69757b..e635514 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -195,6 +195,27 @@
possible. This macro does not raise exceptions.
+These APIs can be used to work with surrogates:
+
+.. c:macro:: Py_UNICODE_IS_SURROGATE(ch)
+
+ Check if *ch* is a surrogate (``0xD800 <= ch <= 0xDFFF``).
+
+.. c:macro:: Py_UNICODE_IS_HIGH_SURROGATE(ch)
+
+ Check if *ch* is an high surrogate (``0xD800 <= ch <= 0xDBFF``).
+
+.. c:macro:: Py_UNICODE_IS_LOW_SURROGATE(ch)
+
+ Check if *ch* is a low surrogate (``0xDC00 <= ch <= 0xDFFF``).
+
+.. c:macro:: Py_UNICODE_JOIN_SURROGATES(high, low)
+
+ Join two surrogate characters and return a single Py_UCS4 value.
+ *high* and *low* are respectively the leading and trailing surrogates in a
+ surrogate pair.
+
+
Plain Py_UNICODE
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