val helper function

updatedshmup.p8

@@ -459,6 +459,16 @@ function parser:saveas(prev, name, sel)
  self[name] = sel and prev[sel] or prev
 end
 
+-- returns its args, ignoring
+-- prev. Used to stuff things
+-- into prev. args are packed
+-- if there's multiple.
+function parser:val(_, ...)
+ local ret := pack(...)
+ if (#ret == 1) return ret[1]
+ return ret
+end
+
 -->8
 --ship behavior