On macOS they will be merged, similarly text find will match ss or ß. That said lossy case conversion is indeed a general problem, which is why the ease of case

On macOS they will be merged, similarly text find will match ss or ß. That said lossy case conversion is indeed a general problem, which is why the ease of case conversion in older text APIs cause problems - and indeed the general assumptions that there are cases, or whether or not the case is actually important. But then apps also continue to believe that one key press == one character, in the face of reality - not helped by the early browser english centric APIs: onkeypress, down, etc being the primary mode of handling text entry when not deferring to the browser. There are better web APIs nowadays, and hopefully things like the standard IMEs that English people use (emoji input on macOS, for example), mean that more devs actually think about these things, though in general everytime I encounter some site taking over text entry themselves I assume that they're broken for non-english or at least non-alphabet based languages.