My point was that, had they not been legacy characters (or were RT compatibility ignored) Unicode could still have supported them as composed characters. Though I personally still feel they are a kind of ligature or graphic, but luckily I’m not the dictator of the world :-).

We should be careful: someone on HN could write a proposal that they SHOULD be considered pre composed forms that should also have an un-composed sequence… so there will be not just 1 in a circle but 1 ZWJ circle, circle ZWJ 1 all considered the same…