Also the character class needs to be negated to search for characters not in the range and then the result negated (here with !~ instead of =~), otherwise he will only detect if the string has any asccii chars

$string !~ m/[^\x00-\x7f]/

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In reply to Re^2: How to determine if string contains non-ASCII characters ? by jethro
in thread How to determine if string contains non-ASCII characters ? by roadrunner

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