in windows XP, python 2.6.1, 2.6 , python 2.4
1. do an Edit | 'Find in files' [ it pop ups the Output Window with 
result]
2. Right click over one of the target lines found, click the 'goto file
\line' pop up

If the path in the target line has spaces, it will popup a window with 
title 'No special line' and message 'the line you point at doenst look 
like a valid file name followed by a line number'

posible fix:
in idlelib/OutputWindow.py
replace the literal
r'([^\s]+):\s*(\d+):'
with
r'([^\t\n\r\f\v]+):\s*(\d+):'

fair warning: seems to work in windows XP, dont know about other OSes