Really interesting. Sloppy specifications and a regression in Python bite Spotify “in the bum,” as Twitter user @danielsamuels put it.
Spotify supports unicode usernames which we are a bit proud of (not many services allow you to have ☃, the unicode snowman, as a username). However, it has also been a reliable source of pain over the years. This is the story of one time when it bit us pretty badly and how we spent Easter dealing with it.
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