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simontatham@hachyderm.io ("Simon Tatham") wrote:
In the old #ASCII days, you could change a letter between upper and lower case by XORing its character code with 0x20. Of course, if you tried this with anything that wasn't a letter, you'd get nonsense results.
If you try that with #Unicode code points, it sometimes works, and sometimes doesn't. But Unicode can deliver much more impressive nonsense when it doesn't.
A fun example I just found: the "lower-case" version of CAR is NO PEDESTRIANS.
>>> chr(ord('🚗') ^ 0x20)
'🚷'