duckduckgo: Switch to the util library.
duckduckgo: Switch to the util library.

Former-commit-id: dd98e0ee5f3494ebf8d5e2977d74c1ba5347e00e [formerly e3c65925d140b5d408030ace3006e3efaf135f30]
Former-commit-id: a191fd42d41b1a844438d6f440b79b50586e5f3a
torhve/ivar2,torhve/ivar2,haste/ivar2,torhve/ivar2