[Gretl-devel] Negation operator

Forgive me if this has already been spotted, but I think that something has gone wrong with the negation operator in the latest CVS. I have recompiled gretl this morning [1.7.6rc1, 28/7/08] and found that I had repeated problems with the syntax if !isnull(var). After beating my head against a brick wall I have established that if a = b .. else .. endif works fine, but if a != b .. else .. endif generates an error message reporting that there is an "unmatched if". Gordon