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$ perl -MURI::Escape -le 'print uri_unescape("%C2%A3")' | od -tx1
0000000 c2 a3 0a
0000003

$ perl -MURI::Escape -MDevel::Peek -e 'Dump uri_unescape("%C2%A3")'
SV = PVMG(0x1762450) at 0x16ceff0
...
  PV = 0x16e5c90 "\302\243"\0
  CUR = 2
  LEN = 8