It would seem from this alleged code that Tor and TAILS are handled differently. TAILS-related searches are being fingerprinted:

// START_DEFINITION
/*
These variables define terms and websites relating to the TAILs (The Amnesic
Incognito Live System) software program, a comsec mechanism advocated by
extremists on extremist forums.
*/

$TAILS_terms=word(‘tails’ or ‘Amnesiac Incognito Live System’) and word(‘linux’
or ’ USB ’ or ’ CD ’ or ‘secure desktop’ or ’ IRC ’ or ‘truecrypt’ or ’ tor ‘);
$TAILS_websites=(‘tails.boum.org/’) or (‘linuxjournal.com/content/linux*’);
// END_DEFINITION

// START_DEFINITION
/*
This fingerprint identifies users searching for the TAILs (The Amnesic
Incognito Live System) software program, viewing documents relating to TAILs,
or viewing websites that detail TAILs.
*/
fingerprint(‘ct_mo/TAILS’)=
fingerprint(‘documents/comsec/tails_doc’) or web_search($TAILS_terms) or
url($TAILS_websites) or html_title($TAILS_websites);
// END_DEFINITION

It doesn’t seem that merely searching for Tor gets you fingerprinted, visiting the Tor Project site does:

// START_DEFINITION
/*
The fingerprint identifies sessions visiting the Tor Project website from
non-fvey countries.
*/
fingerprint(‘anonymizer/tor/torpoject_visit’)=http_host(‘www.torproject.org’)

The users from these countries seem to be excluded:

and not(xff_cc(‘US’ OR ‘GB’ OR ‘CA’ OR ‘AU’ OR ‘NZ’));
// END_DEFINITION