fix issue 337 with incorrect calltips being generated for magics

IPython/core/interactiveshell.py

@@ -1287,6 +1287,7 b' class InteractiveShell(Configurable, Magic):'
             return 'not found'  # so callers can take other action
 
     def object_inspect(self, oname):
+        with self.builtin_trap:
         info = self._object_find(oname)
         if info.found:
             return self.inspector.info(info.obj, oname, info=info)

IPython/frontend/qt/console/frontend_widget.py

@@ -355,6 +355,12 b' class FrontendWidget(HistoryConsoleWidget, BaseFrontendMixin):'
             # line as string, later we can pass False to format_call and
             # syntax-highlight it ourselves for nicer formatting in the
             # calltip.
+            if rep['content']['ismagic']:
+                # Don't generate a call-tip for magics. Ideally, we should
+                # generate a tooltip, but not on ( like we do for actual
+                # callables.
+                call_info, doc = None, None
+            else:
             call_info, doc = call_tip(rep['content'], format_call=True)
             if call_info or doc:
                 self._call_tip_widget.show_call_info(call_info, doc)