/usr/share/m17n/tg.lnm is in m17n-db 1.7.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(language name tg nil) (de "Немисӣ") (en "Англисӣ") (fr "Фаронсавӣ") (zh "Чинӣ")