1 files changed, 2 insertions, 0 deletions

diff --git a/src/variable.h b/src/variable.h
index 241393e..890552a 100644
--- a/src/variable.h
+++ b/src/variable.h
@@ -123,4 +123,6 @@ Bu::Formatter &operator<<( Bu::Formatter &f, const Variable &v );
 Bu::ArchiveBase &operator<<( Bu::ArchiveBase &ar, const Variable &v );
 Bu::ArchiveBase &operator>>( Bu::ArchiveBase &ar, Variable &v );
 
+VarList operator-( const VarList &rBase, const VarList &rSub );
+
 #endif