simple question revisited

*To*: mathgroup at smc.vnet.net*Subject*: [mg69872] simple question revisited*From*: dimmechan at yahoo.com*Date*: Tue, 26 Sep 2006 00:59:38 -0400 (EDT)

Hello again. Finally searching a bit I found in the Mathematica Book I found something. For my case of interest it is: optsfunc = Function[e, Options[Unevaluated[e]], HoldFirst]; Select[Names["*"], MemberQ[ToExpression[#1, InputForm, optsfunc], SameTest -> _] & ] {"Complement", "FixedPoint", "FixedPointList", "Intersection", "Union"} And now there is no message. As I guess before despite the presence of the message everything was ok. Anyway I keep wondering why the message appeared.