This file is indexed.

/usr/share/kde4/apps/kconf_update/proxytype.pl is in kdelibs5-data 4:4.8.2-0ubuntu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/usr/bin/perl
# the script is called with interpreter, so don't worry about the path

while(<>)
{
    $useproxy = 1 if /UseProxy=true/;
    $usepac = 1 if /Proxy Config Script=.*\S/;
}
printf ("# DELETE UseProxy\n");
$proxytype = $useproxy ? ($usepac ? 2 : 1) : 0;
print "ProxyType=$proxytype\n" if $proxytype;