Render `py::int_` as `int` in docstrings

include/pybind11/cast.h

@@ -1606,6 +1606,7 @@ template <typename base, typename deleter> struct is_holder_type<base, std::uniq
 
 template <typename T> struct handle_type_name { static constexpr auto name = _<T>(); };
 template <> struct handle_type_name<bytes> { static constexpr auto name = _(PYBIND11_BYTES_NAME); };
+template <> struct handle_type_name<int_> { static constexpr auto name = _("int"); };
 template <> struct handle_type_name<iterable> { static constexpr auto name = _("Iterable"); };
 template <> struct handle_type_name<iterator> { static constexpr auto name = _("Iterator"); };
 template <> struct handle_type_name<args> { static constexpr auto name = _("*args"); };

tests/test_pytypes.cpp

@@ -11,6 +11,8 @@
 
 
 TEST_SUBMODULE(pytypes, m) {
+    // test_int
+    m.def("get_int", []{return py::int_(0);});
     // test_list
     m.def("get_list", []() {
         py::list list;

tests/test_pytypes.py

@@ -5,6 +5,8 @@ import sys
 from pybind11_tests import pytypes as m
 from pybind11_tests import debug_enabled
 
+def test_int(doc):
+    assert doc(m.get_int) == "get_int() -> int"
 
 def test_list(capture, doc):
     with capture: