--- /usr/local/lib/python3.2/configparser.py.bak	2011-04-16 23:56:43.555353059 +0800
+++ /usr/local/lib/python3.2/configparser.py	2011-04-16 23:56:54.136352944 +0800
@@ -481,17 +481,17 @@
                 if m is None:
                     raise InterpolationSyntaxError(option, section,
                         "bad interpolation variable reference %r" % rest)
-                path = parser.optionxform(m.group(1)).split(':')
+                path = m.group(1).split(':')
                 rest = rest[m.end():]
                 sect = section
                 opt = option
                 try:
                     if len(path) == 1:
-                        opt = path[0]
+                        opt = parser.optionxform(path[0])
                         v = map[opt]
                     elif len(path) == 2:
                         sect = path[0]
-                        opt = path[1]
+                        opt = parser.optionxform(path[1])
                         v = parser.get(sect, opt, raw=True)
                     else:
                         raise InterpolationSyntaxError(