Was it 15.0? I seem to recall it coming in one of the minor point releases in the 15.x line - and I remember it breaking some scripts mysteriously.
EDIT: ah, fun: they did include it in 15.0, but they decided to save the breaking change that removed backwards compatibility for 15.4. https://apple.stackexchange.com/a/479297
alt Hacker News
Was it 15.0? I seem to recall it coming in one of the minor point releases in the 15.x line - and I remember it breaking some scripts mysteriously.
EDIT: ah, fun: they did include it in 15.0, but they decided to save the breaking change that removed backwards compatibility for 15.4. https://apple.stackexchange.com/a/479297