[tbb-bugs] #13313 [Tor Browser]: Enable bundled fonts in Tor Browser

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Jul 2 12:07:19 UTC 2015

#13313: Enable bundled fonts in Tor Browser
     Reporter:  dcf          |      Owner:  tbb-team
         Type:  enhancement  |     Status:  new
     Priority:  normal       |  Milestone:
    Component:  Tor Browser  |    Version:
   Resolution:               |   Keywords:  tbb-fingerprinting-fonts
Actual Points:               |  Parent ID:
       Points:               |

Comment (by dcf):

 I got some advice from Firefox maintainers. One suggests that the best way
 to do the job is to put code in gfxPlatformFontList that filters the
 system font list (based on file name; we check that the names are within
 the whitelisted bundle directory). Another says that in order to disable
 system fallback, one should set the pref
 gfx.font_rendering.fallback.always_use_cmaps to true, which will cause the
 renderer to explicitly iterate through the list of known fonts.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13313#comment:11>
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