Issue #16829: IDLE printing no longer fails if there are spaces or other
special characters in the file path.
diff --git a/Lib/idlelib/IOBinding.py b/Lib/idlelib/IOBinding.py
index e429c10..8078c3f 100644
--- a/Lib/idlelib/IOBinding.py
+++ b/Lib/idlelib/IOBinding.py
@@ -7,6 +7,7 @@
 
 import os
 import types
+import pipes
 import sys
 import codecs
 import tempfile
@@ -503,7 +504,7 @@
         else: #no printing for this platform
             printPlatform = False
         if printPlatform:  #we can try to print for this platform
-            command = command % filename
+            command = command % pipes.quote(filename)
             pipe = os.popen(command, "r")
             # things can get ugly on NT if there is no printer available.
             output = pipe.read().strip()