Issue #6181: Fixed minor bugs in tkinter.Listbox methods:
bbox(), curselection() and get().
diff --git a/Lib/lib-tk/Tkinter.py b/Lib/lib-tk/Tkinter.py
index 02014d0..d3d7d83 100644
--- a/Lib/lib-tk/Tkinter.py
+++ b/Lib/lib-tk/Tkinter.py
@@ -2569,22 +2569,19 @@
     def activate(self, index):
         """Activate item identified by INDEX."""
         self.tk.call(self._w, 'activate', index)
-    def bbox(self, *args):
+    def bbox(self, index):
         """Return a tuple of X1,Y1,X2,Y2 coordinates for a rectangle
-        which encloses the item identified by index in ARGS."""
-        return self._getints(
-            self.tk.call((self._w, 'bbox') + args)) or None
+        which encloses the item identified by the given index."""
+        return self._getints(self.tk.call(self._w, 'bbox', index)) or None
     def curselection(self):
-        """Return list of indices of currently selected item."""
-        # XXX Ought to apply self._getints()...
-        return self.tk.splitlist(self.tk.call(
-            self._w, 'curselection'))
+        """Return the indices of currently selected item."""
+        return self._getints(self.tk.call(self._w, 'curselection')) or ()
     def delete(self, first, last=None):
         """Delete items from FIRST to LAST (included)."""
         self.tk.call(self._w, 'delete', first, last)
     def get(self, first, last=None):
         """Get list of items from FIRST to LAST (included)."""
-        if last:
+        if last is not None:
             return self.tk.splitlist(self.tk.call(
                 self._w, 'get', first, last))
         else: