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#!/usr/bin/perl -T
use strict;
use URI::Escape;
use CGI qw/:standard/;
my $unsafestring = "\$5/[3454]/this is a windows filename.asp";
my $safestring = uri_escape($unsafestring);
my $unescstring = uri_unescape($safestring);
print header,
start_html("start"),
p("unsafe URL: $unsafestring\n"),
p("url_escape(): $safestring\n"),
p("$unescstring: $unescstring\n"),
end_html;
exit;
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