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> The advent of emojis and emoji ZWJ sequences make those kind of "characters" especially common. They're already common through MacOS filesystems. MacOS by st

• masklinn 10y ago
  > ä into ¨+a You've reversed the encoding (the combining character follows, so U+00E4 decomposes to U+0061 U+0308), and that's a simpler case as combining characters are combining, they have very specific properties which mark them as combining characters and as continuation of a grapheme. AFAIK that's not the case for ZWJ sequences. There's also a case to be made for reverse(WOMAN ZWJ HEAVY BLACK HEART ZWJ MAN) to be MAN ZWJ HEAVY BLACK HEART ZWJ WOMAN (sadly the latter does not seem to be handled correctly, at least by Apple's rendering system, it fails to combine into a single "couple" glyph)