Connect storing output in database to DisplayHook.log_output

IPython/core/displayhook.py

@@ -277,10 +277,14 b' class DisplayHook(Configurable):'
                 self.shell.user_ns.update(to_main)
                 self.shell.user_ns['_oh'][self.prompt_count] = result
 
-    def log_output(self, result):
+    def log_output(self, format_dict):
         """Log the output."""
         if self.shell.logger.log_output:
-            self.shell.logger.log_write(repr(result), 'output')
+            self.shell.logger.log_write(format_dict['text/plain'], 'output')
+        # Write output to the database. Does nothing unless history
+        # output logging is enabled.
+        self.shell.history_manager.store_output(self.prompt_count,
+                                                format_dict['text/plain'])
 
     def finish_displayhook(self):
         """Finish up all displayhook activities."""
@@ -300,7 +304,7 b' class DisplayHook(Configurable):'
             format_dict = self.compute_format_data(result)
             self.write_format_data(format_dict)
             self.update_user_ns(result)
-            self.log_output(result)
+            self.log_output(format_dict)
             self.finish_displayhook()
 
     def flush(self):