From bf7d0ccd75fed8cf8ba529744e08a71779c39401 Mon Sep 17 00:00:00 2001
From: Georg Brandl <georg@python.org>
Date: Sat, 25 Jul 2015 17:04:06 +0200
Subject: [PATCH] Fixes #1887: note that graph name needs quotes if non
 alphanumeric.

---
 doc/ext/graphviz.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/ext/graphviz.rst b/doc/ext/graphviz.rst
index 9b34b48fe..d5a5969f4 100644
--- a/doc/ext/graphviz.rst
+++ b/doc/ext/graphviz.rst
@@ -53,6 +53,10 @@ It adds these directives:
 
          "bar" -- "baz";
 
+   .. note:: The graph name is passed unchanged to Graphviz.  If it contains
+      non-alphanumeric characters (e.g. a dash), you will have to double-quote
+      it.
+
 
 .. rst:directive:: digraph