How does the input file look like that produces the empty output?
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: Renaming headers works for some files but fails for some files by choroba
in thread Renaming headers works for some files but fails for some files by MVRS

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