Fix a bug in Rev 1.10 - Windows can't handle a leading ':' if the

user's PYTHONPATH is empty (though Linux can).
Modified Files:
	idle idle.py idle.pyw

Lib/idlelib/idle

@@ -14,7 +14,10 @@ except ImportError:
         if idledir != os.getcwd():
             # We're not in the IDLE directory, help the subprocess find run.py
             pypath = os.environ.get('PYTHONPATH', '')
-            os.environ['PYTHONPATH'] = pypath + ':' + idledir
+            if pypath:
+                os.environ['PYTHONPATH'] = pypath + ':' + idledir
+            else:
+                os.environ['PYTHONPATH'] = idledir
         PyShell.main()
 else:
     idlelib.PyShell.main()

Lib/idlelib/idle.py

@@ -14,7 +14,10 @@ except ImportError:
         if idledir != os.getcwd():
             # We're not in the IDLE directory, help the subprocess find run.py
             pypath = os.environ.get('PYTHONPATH', '')
-            os.environ['PYTHONPATH'] = pypath + ':' + idledir
+            if pypath:
+                os.environ['PYTHONPATH'] = pypath + ':' + idledir
+            else:
+                os.environ['PYTHONPATH'] = idledir
         PyShell.main()
 else:
     idlelib.PyShell.main()

Lib/idlelib/idle.pyw

@@ -12,7 +12,10 @@ except ImportError:
         if idledir != os.getcwd():
             # We're not in the IDLE directory, help the subprocess find run.py
             pypath = os.environ.get('PYTHONPATH', '')
-            os.environ['PYTHONPATH'] = pypath + ':' + idledir
+            if pypath:
+                os.environ['PYTHONPATH'] = pypath + ':' + idledir
+            else:
+                os.environ['PYTHONPATH'] = idledir
         PyShell.main()
 else:
     idlelib.PyShell.main()