> Keeping the existing capitalization of ß → SS, you need to define a "uppercase S that used to be ß" character. Even more complicated, there is a capital form

> Keeping the existing capitalization of ß → SS, you need to define a "uppercase S that used to be ß" character. Even more complicated, there is a capital form of ß: https://en.wikipedia.org/wiki/%C3%9F https://en.wikipedia.org/wiki/%C3%9F > Until 2017, there was no official capital form of ⟨ß⟩; a capital form was nevertheless frequently used in advertising and government bureaucratic documents.[10]: 211 In June of that year, the Council for German Orthography officially adopted a rule that ⟨ẞ⟩ would be an option for capitalizing ⟨ß⟩ besides the previous capitalization as ⟨SS⟩ (i.e., variants STRASSE and STRAẞE would be accepted as equally valid).[11] [12] Prior to this time, it was recommended to render ⟨ß⟩ as ⟨SS⟩ in allcaps except when there was ambiguity, in which case it should be rendered as ⟨SZ⟩. The common example for such a case was IN MASZEN (in Maßen "in moderate amounts") vs. IN MASSEN (in Massen "in massive amounts"), where the difference between the spelling in ⟨ß⟩ vs. ⟨ss⟩ could actually reverse the conveyed meaning.[citation needed] No character encoding standard can save you from that kind of complexity. You need special-case code on a language-by-language basis.