From fa690a7e5fa4ff357217864909c531fc996d8ea4 Mon Sep 17 00:00:00 2001
From: Thibault Genessay <tibogens@gmail.com>
Date: Tue, 1 Mar 2016 13:01:36 +0100
Subject: [PATCH] Added shell=True to Popen() on win32

This allows 'dot.exe' to be found when called with 'dot', as long as
'dot.exe' is in the PATH.
---
 sphinxtools/inheritance.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/sphinxtools/inheritance.py b/sphinxtools/inheritance.py
index b1dc5318..d2c970bf 100644
--- a/sphinxtools/inheritance.py
+++ b/sphinxtools/inheritance.py
@@ -269,9 +269,18 @@ class InheritanceDiagram(object):
         dot_args.extend(['-Tpng', '-o' + outfn])
         dot_args.extend(['-Tcmapx', '-o' + mapfile])
 
+        popen_args = {
+            'stdout': PIPE,
+            'stdin': PIPE,
+            'stderr': PIPE
+        }
+        
+        if sys.platform == 'win32':
+            popen_args['shell'] = True
+
         try:
 
-            p = Popen(dot_args, stdout=PIPE, stdin=PIPE, stderr=PIPE)
+            p = Popen(dot_args, **popen_args)
 
         except OSError as err: