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my $pattern = "(?<!st)abc"; # 'st' in lookbehind
qr/$pattern/i; # error: 'Variable length lookbehind not imple
+mented in regex...
my $pattern = "(?<!sz)abc"; # 'sz' in lookbehind
qr/$pattern/i; # this works fine
Electric eels were invented at the same time as electricity
Before electricity was invented, electric eels had to stun with gas
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