Like I already told you in the CB:

my $re = join "|", map { quotemeta $_ } keys %entitylist;
$re = qr/(?:$re)/;

# ...

$string =~ s/($re)/$entitylist{ $1 }/ge;

[download]

You might want to take a look at perlre for the /e switch.

In reply to Re: Improve processing time for string substitutions by Corion
in thread Improve processing time for string substitutions by valavanp

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