fix key spelling errors, type errors, things-should-not-be-comments errors Change-Id: I3ce12873aa78002bca686bd88404771895b05d30
nix search: Disallow empty regex (cherry picked from commit 1c260fa6d1f47d83954792771d0614db163cc3bc) Change-Id: Iaaf3605c24a342fcb05d0b534a9f305533d3b5fa