Python 3 preparation: update next() usage for iterators. Tool-assisted patch. Note that various classes in TAL code with next() methods are not actually Python iterators and so are not changed in this patch, but roundup/cgi/ZTUtils/Iterator.py includes the IterIter class which converts between the two styles of iterator.

def audit_html_files(db, cl, nodeid, newvalues):
    if 'type' in newvalues and newvalues['type'] == 'text/html':
        newvalues['type'] = 'text/plain'
    

def init(db):
    db.file.audit('set', audit_html_files)
    db.file.audit('create', audit_html_files)