Given a list @words, verify that a string $target contains all words in any order, using one regular expression.

Constructs a regular expression using an "and" operation, using positive forward lookaheads.

ONCE:
my $regex = join "", "^(?s)", map "(?=.*?\Q$_\E)", @words;
$regex = qr/$regex/;
...
AS_NEEDED:
$found_all = $target =~ $regex;

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In reply to Verify string contains ALL words in list by merlyn

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