@Lutrinus That's a can of worms I'm going to avoid for now, at least until I speak to some pros about it
@rutherford they just introduced it. Usually, if in german you write all caps, ß just becomes SS, so Straße -> STRASSE. On Passports, names have to be all caps, which is a problem if you have an ß in your name, because then your name is changed
@Lutrinus It's a controversial topic though, 'ß' has historically never had a capital form (and officially isn't even a letter). Some people strongly support it, but I have heard good arguments against.
@rutherford Yeah, but I guess it's just a legal formality. People would get in trouble at borders because their names were written differently on different documents. I've never used it.
@Lutrinus One could argue that educating passport control officials about the ß might be better than inventing a new symbol, but then again, I don't know the specifics.
It's certainly true that having a string with different character lengths depending on whether it's upper or lowercase could be problematic.
I have a hard time imagining any OCR-system at an airport that can’t deal with lowercase letters. They were able to do so in the 1960s.
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