Father Chrysostomos wrote: >glob has no prototype, but I think it should have (_). Looks right to me. >lock has \$, but allows lock %foo, so what should it be? The argument class is OA_SCALARREF, and its behaviour in ck_fun() is actually to allow *anything*. tied() uses that argument class too, and has prototype (\[$@%*]). (\[$@%*]) is at least pretty close; are there any cases that OA_SCALARREF accepts that (\[$@%*]) doesn't? For those ops whose checker is ck_fun() or ck_rfun(), you should attempt a mechanical translation of PL_opargs[] to prototypes and see how that compares against what pp_prototype() yields. Of course, as a subtask you'd have to decide the proper prototype rendition of each OA_* argument class. -zeframThread Previous