[issue34928] string method .upper() converts 'ß' to 'SS' instead of 'ẞ'

Karthikeyan Singaravelan added the comment: No problem. Thanks for the confirmation I am closing this as a duplicate. -- resolution: -> duplicate stage: -> resolved status: open -> closed superseder: -> Germany made the upper case ß official. 'ß'.upper() should now return ẞ.

[issue34928] string method .upper() converts 'ß' to 'SS' instead of 'ẞ'

Marc Richter added the comment: Sorry then; that did not show up in my search :/ Yes, seems like this is duplicating that one. -- ___ Python tracker ___

[issue34928] string method .upper() converts 'ß' to 'SS' instead of 'ẞ'

Karthikeyan Singaravelan added the comment: Thanks for the report and details but I think this exact case was already discussed in issue30810. -- nosy: +xtreak ___ Python tracker

[issue34928] string method .upper() converts 'ß' to 'SS' instead of 'ẞ'

Steven D'Aprano added the comment: We match the Unicode specification, not arbitrary language rules. (Austrian and Swiss German are, I believe, phasing out ß altogether, and haven't added an uppercase variant.) Until the Unicode consortium change their case conversion rules, it is still

[issue34928] string method .upper() converts 'ß' to 'SS' instead of 'ẞ'

New submission from Marc Richter : There's a special letter in German orthography called "eszett" (ß). This letter had no uppercase variant for hundreds of years until 2017, there was an uppercase variant added to the official German orthography called "capital eszett" (ẞ) [1]. Python's