Index: Lib/idlelib/PyShell.py
===================================================================
--- Lib/idlelib/PyShell.py	(revision 65732)
+++ Lib/idlelib/PyShell.py	(working copy)
@@ -1061,7 +1061,8 @@
         return "break"
 
     def home_callback(self, event):
-        if event.state != 0 and event.keysym == "Home":
+        if (event.state & 12) != 0 and event.keysym == "Home":
+            # state&1==shift, state&4==control, state&8==alt
             return # <Modifier-Home>; fall back to class binding
         if self.text.compare("iomark", "<=", "insert") and \
            self.text.compare("insert linestart", "<=", "iomark"):