Is the informal German good-bye usually spelled with the Eszett, or with double esses?
Wasn’t there a spelling reform in the nineties that nuked the Eszett?
No, the spelling reform didn’t “nuke” it. It merely eliminated its use following “short” vowels and made it mandatory following “long” vowels.
From what I learned in my 4 years of German in High School…it is spelled with an eszett.
-n
Definitely an eszett.
Native speaker here.
Is that a weird-looking word or what?
In my opinion, backed up by German wikipedia and the Duden, it is normally written with a single s, even if both alternatives seem to be possible.
With bonus multilanguage trivia at the end of the wiki article 