On 09.05.25 21:50, Robert Haas wrote:
I always struggle a bit to remember our policy on these issues -- to the best of my knowledge, we haven't documented it anywhere, and I think we probably should. I believe the way it works is that whenever a function depends on the operating system's timestamp or locale definitions, we decide it has to be stable, not immutable. We don't expect those things to be updated very often, but we know sometimes they do get updated.
I don't understand how this discussion got to the conclusion that functions that depend on the locale cannot be immutable. Note that the top-level functions lower, upper, and initcap themselves are immutable.
