--- programs/boost_1_43_0/boost/preprocessor/seq/cat.hpp	2005-09-05 09:58:27.000000000 +0200
+++ workspace/booster/boost/preprocessor/seq/cat.hpp	2010-07-24 20:18:53.740352993 +0200
@@ -26,7 +26,7 @@
     BOOST_PP_IF( \
         BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)), \
         BOOST_PP_SEQ_CAT_I, \
-        BOOST_PP_SEQ_HEAD(seq) BOOST_PP_TUPLE_EAT_1 \
+        BOOST_PP_SEQ_HEAD \
     )(seq) \
     /**/
 # define BOOST_PP_SEQ_CAT_I(seq) BOOST_PP_SEQ_FOLD_LEFT(BOOST_PP_SEQ_CAT_O, BOOST_PP_SEQ_HEAD(seq), BOOST_PP_SEQ_TAIL(seq))