runrig's solution also works very nicely with locales. In a locale where 'áÁéÉ' are all letters, for example, ($_ = "Á") =~ s/(á)/fix_case($1, 'é')/eig; will change $_ from "Á" to "É"!

In reply to Re: Re: Case-sensitive substitution with case-insensitive matches by chipmunk
in thread Case-sensitive substitution with case-insensitive matches by Anonymous Monk

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