[usrbinbash]

The real usecases where I need deterministic select, are so few that a small performance loss doesn't matter to me.

[tapirl]

Sometimes, it is not related to performance loss, it is related to implementation cleanness and complexity.

[usrbinbash]

A separate `select` with empty `default` is about as simple and clean as it gets. It is easy to read, easy to reason about, and, most importantly, conveys the intention of the code perfectly.