[Dev-luatex] \luaclose undefined

\pdfoutput=1 \directlua1{ tex.print("Hello World"); } \luaclose1 \bye produces: This is luaTeX, Version 3.141592-snapshot-2007051713 (Web2C 7.5.6) (minimal2.tex ! Undefined control sequence. l.7 \luaclose 1 ? Shouldn't this work? (Same with latest snapshot.) Regards olli