Variable Entry contains wrong value

[Angus]

hello

cas and home share the Entry setting. That means while using algebraic entry returns 1 in both home and cas. textbook entry returns 0.
However when set to rpn in home the cas falls back to texbook-entry, but still returns 2.
Cas complies with the home setting when algebraic is chosen.

I would suggest that Entry always returns the value currently in use / if the setting is overridden by an other mode this one should be returned for consistency.