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Once more unto the Wide character (U+XXXX) in substitution (s///) | Aristotle [blogs.perl.org]
https://blogs.perl.org/users/aristotle/2025/03/once-more-subst-widechar-warning.html
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I wrote very elliptically about this warning and received some helpful comments with the standard advice about how to proceed when encountering it. Except unfortunately that advice will be of no use when you encounter this warning.
