in reply to Infinite Recursion of a Stringin thread Double Interpolation of a String
my $max_recurs = 10;
$max_recurs-- while $string =~ ... && $max_recurs;
warn "Too many recursive substitutions on '$string'"
if !$max_recurs && $^W;
There is no Extraterrestrial life
There aren't any suitably capable Extraterrestrials
Interstellar travel is too difficult
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