Yes, the Python standard library (like many other implementations) chose to do the "easy" way instead of the "correct" one. Correct case-folding in Greek is co

Yes, the Python standard library (like many other implementations) chose to do the "easy" way instead of the "correct" one. Correct case-folding in Greek is complicated, since it might introduce diaeresis in the next vowel, if the accents are removed: Μάιος - ΜΑΪΟΣ. All this means that correct handling is not reversible, which introduces a slew of other problems.