This file is indexed.

/usr/lib/thunderbird/extensions/ is in lightning-l10n-en-gb 1:52.8.0-1~deb8u1.

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

File Mime Type Owner Mode Size
..
/usr/lib/thunderbird/extensions/langpack-en-gb@lightning.debian.org root:root 0o777