Signature formatting for sphinx

example/example11.ref

 Help on built-in function kw_func in module example
 
 kkww__ffuunncc(...)
-    Signature : (x : int, y : int) -> NoneType
+    kw_func(x : int, y : int)
 
 Help on built-in function kw_func2 in module example
 
 kkww__ffuunncc22(...)
-    Signature : (x : int = 100L, y : int = 200L) -> NoneType
+    kw_func2(x : int = 100L, y : int = 200L)
 
 Help on built-in function kw_func3 in module example
 
 kkww__ffuunncc33(...)
-    Signature : (data : unicode = u'Hello world!') -> NoneType
+    kw_func3(data : unicode = u'Hello world!')
 
 Help on built-in function kw_func4 in module example
 
 kkww__ffuunncc44(...)
-    Signature : (myList : list<int> = [13L, 17L]) -> NoneType
+    kw_func4(myList : list<int> = [13L, 17L])
 
 kw_func(x=5, y=10)
 kw_func(x=5, y=10)
@@ -28,7 +28,7 @@ kw_func(x=100, y=10)
 kw_func(x=5, y=10)
 kw_func(x=5, y=10)
 Caught expected exception: Incompatible function arguments. The following argument types are supported:
-    1. (x : int = 100L, y : int = 200L) -> NoneType
+    1. (x : int = 100L, y : int = 200L)
 
 kw_func4: 13 17 
 kw_func4: 1 2 3 

example/example5.ref

@@ -13,7 +13,7 @@ Rabbit is a parrot
 Polly is a parrot
 Molly is a dog
 The following error is expected: Incompatible function arguments. The following argument types are supported:
-    1. (example.Dog) -> NoneType
+    1. (example.Dog)
 
 Callback function 1 called!
 False

include/pybind11/pybind11.h

@@ -81,7 +81,7 @@ public:
 
         /* Generate a readable signature describing the function's arguments and return value types */
         using detail::descr;
-        PYBIND11_DESCR signature = cast_in::name() + detail::_(" -> ") + cast_out::name();
+        PYBIND11_DESCR signature = cast_in::name();
 
         /* Register the function with Python from generic (non-templated) code */
         initialize(rec, signature.text(), signature.types(), sizeof...(Args));
@@ -157,7 +157,7 @@ protected:
 
         /* Generate a readable signature describing the function's arguments and return value types */
         using detail::descr;
-        PYBIND11_DESCR signature = cast_in::name() + detail::_(" -> ") + cast_out::name();
+        PYBIND11_DESCR signature = cast_in::name();
 
         /* Register the function with Python from generic (non-templated) code */
         initialize(rec, signature.text(), signature.types(), sizeof...(Args));
@@ -298,7 +298,7 @@ protected:
         for (auto it = chain_start; it != nullptr; it = it->next) {
             if (chain)
                 signatures += std::to_string(++index) + ". ";
-            signatures += "Signature : ";
+            signatures += rec->name;
             signatures += it->signature;
             signatures += "\n";
             if (it->doc && strlen(it->doc) > 0) {