Add a reference to the name mangling description in the tutorial to the index. (GH-10138)

miss-islington · andresdelfino · web-flow · commit d06b60fca35d · 2018-11-07T10:30:12.000-08:00
(cherry picked from commit c5eec44) Co-authored-by: Andrés Delfino <adelfino@gmail.com>
diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst
@@ -620,6 +620,9 @@ be treated as a non-public part of the API (whether it is a function, a method
 or a data member).  It should be considered an implementation detail and subject
 to change without notice.
 
+.. index::
+   pair: name; mangling
+
 Since there is a valid use-case for class-private members (namely to avoid name
 clashes of names with names defined by subclasses), there is limited support for
 such a mechanism, called :dfn:`name mangling`.  Any identifier of the form
