German sharp S uppercase mapping

[Otto Stolz]

Hello,

am 2024-12-01 um 1:44 Uhr hat Steffen Nurpmeso geschrieben:
> Yes, and Straße/STRASSE is such a thing if there is Gasse/GASSE
> but which just has the same "S-sound", and always had since the
> earth existsed (1972).  Was it Gaße, ever? 

No, never.

In German orthography, double consonants mark the preceding vowel as 
being short (if there isn’t just a mere co-incidence in a compound,
e. g. “Mausschwanz” (mouse tail)). As the “a” in “Straße” is long,
you write “ß”; as the “a” in “Gasse” is short, you write “ss”.
Cf. <https://grammis.ids-mannheim.de/rechtschreibung/6173>
and <https://grammis.ids-mannheim.de/rechtschreibung/6180>.

Best wishes,
   Otto Stolz