Space types that are to support shortcuts like this should call BPY_menu_do_shortcut(...) from the event queue read method (See winqreadtextspace in drawtext.c for example)
import Blender
from Blender import *
| <- cursor here suggests globals
Blender.Draw.gl| <- cursor here suggests all Draw members starting gl
Currently suggestions are listed in the console when the space is redrawn but will be presented as a menu-style list soon. Also to add are shortcut/activation keys to allow plugins to respond to certain key strokes.