I think this is for the codepoints that have both an emoji form and a non-emoji form? (And yeah, that's admittedly confusing for the app.) I think Unicode does

I think this is for the codepoints that have both an emoji form and a non-emoji form? (And yeah, that's admittedly confusing for the app.) I think Unicode does specify a way to force those codepoints to either the emoji form or the non-emoji form, but there is still an encoding that is ambiguous by spec, I think. E.g., the "TM" symbol falls into this; on macOS if you open the character selector and search "trade", you will get both variants. Edit: this: https://unicode.org/reports/tr51/#Presentation_Style https://unicode.org/reports/tr51/#Presentation_Style