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$sep = unpack "H*", $sep // "";
$ find site_perl/5.28.0 -name \*.pm | wc -l 11735 ... $ perl -nE'/^=head2.*L<(.*?)\|/ and$x{$1}++;END{say scalar keys %x}' 5 +.28.0/x86_64-linux-thread-multi-ld/perllocal.pod 1483