Indirect tag in an expression binding?

[nminchin]

don't use the tag expression function, if you do end up finding this function. This should only ever be used in expression tag expressions:

@PGriffith

The tag() function can't be optimized the same way indirect tag bindings can, so it's a performance pitfall.

@pturmel

Really, if you are using the tag() expression function in a User Interface binding, you are screwing up. Full stop.

The only appropriate place to use the tag() expression function is to perform indirection within an expression tag. Nowhere else.