No bugs since first introduced in the tree in May of 2008: http://bugs.gentoo.org/buglist.cgi?quicksearch=ALL+tibetan-machine-font
*** Bug 279860 has been marked as a duplicate of this bug. ***
Arches please proceed to mark as stable media-fonts/tibetan-machine-font-1.901
amd64/x86 stable, all arches done.