Bug #1287: make os.environ.pop() work as expected.
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index bc4cf42..0e46741 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -118,10 +118,11 @@
If the platform supports the :func:`unsetenv` function, you can delete items in
this mapping to unset environment variables. :func:`unsetenv` will be called
automatically when an item is deleted from ``os.environ``, and when
- :meth:`os.environ.clear` is called.
+ one of the :meth:`pop` or :meth:`clear` methods is called.
.. versionchanged:: 2.6
- Also unset environment variables when calling :meth:`os.environ.clear`.
+ Also unset environment variables when calling :meth:`os.environ.clear`
+ and :meth:`os.environ.pop`.
.. function:: chdir(path)