fix name 'str2kw' is not defined
fix name 'str2kw' is not defined

lino-framework/lino,lsaffre/lino,lsaffre/lino,lsaffre/lino,lsaffre/lino,lino-framework/lino,lino-framework/lino,lino-framework/lino,lsaffre/lino,lino-framework/lino