Fix Python 2.2 idiom.

git-svn-id: http://scons.tigris.org/svn/scons/trunk@4093 fdb21ef1-2011-0410-befe-b5e4ea1792b1

diff --git a/src/engine/SCons/Variables/__init__.py b/src/engine/SCons/Variables/__init__.py
index f203677e0c2dfd1b2ae1fb98d08478043852c7de..b1a228862968367c5c3cb6b5c68535a7bd8c6383 100644 (file)
--- a/src/engine/SCons/Variables/__init__.py
+++ b/src/engine/SCons/Variables/__init__.py
@@ -99,7 +99,9 @@ class Variables:
         # options might be added after the 'unknown' dict has been set up,
         # so we remove the key and all its aliases from that dict
         for alias in list(option.aliases) + [ option.key ]:
-          if alias in self.unknown:
+          # TODO(1.5)
+          #if alias in self.unknown:
+          if alias in self.unknown.keys():
             del self.unknown[alias]
 
     def keys(self):