Exposing Symbols to $ContextPath

Question

There are a variety of Internal`context functions that are useful, such as InheritedBlock, Bag and StuffBag, etc., as well as many useful Developer` fu

Answer 1

A variation of Leonid's answer which applies on an earlier stage:

InternalSymbols={"Bag","BagLength","BagPart","StuffBag"}
$PreRead=#/.(InternalSymbols/.{s_String:>s->"Internal`"<>s})&

After typing this in a notebook, typing

?Bag

gives me

Internal`Bag
Attributes[Internal`Bag]={Protected}

while

?AbsSquare

gives

Information::notfound: Symbol AbsSquare not found.

but

?Internal`AbsSquare

gives

Internal`AbsSquare
Attributes[Internal`AbsSquare]={Listable,NumericFunction,Protected}

However it seems to only work in the notebook interface, not when using math on the command line.