Sphinx confuses me

The docs say that .. highlight:: sets a default language until the next
.. highlight:: command, but look at the rendered text on RTD it seemed
to only affect immediately following source block, not the one after
that.

Author: njsmith

docs/source/examples.rst

@@ -1,8 +1,6 @@
 Examples
 ========
 
-.. highlight:: python
-
 ..
    If we add any more examples then we should probably split this out
    into separate pages for each example
@@ -14,9 +12,11 @@ Minimal client, using synchronous I/O
 -------------------------------------
 
 .. literalinclude:: ../../examples/basic-client.py
+   :language: python
 
 
 Fairly complete server with error handling, using Curio for async I/O
 ---------------------------------------------------------------------
 
 .. literalinclude:: ../../examples/curio-server.py
+   :language: python