Change to <<open-module>>: always pop up the dialog, using the current

selection as the default value.  This is easier to use habitually.

Lib/idlelib/EditorWindow.py

@@ -411,11 +411,10 @@ class EditorWindow:
             name = ""
         else:
             name = name.strip()
-        if not name:
         name = tkSimpleDialog.askstring("Module",
                  "Enter the name of a Python module\n"
                  "to search on sys.path and open:",
-                     parent=self.text)
+                 parent=self.text, initialvalue=name)
         if name:
             name = name.strip()
         if not name: