+ if dpkg --compare-versions "$2" lt 1.1~exp4; then
+ # apt-key before 0.9.10 could leave empty keyrings around
+ find /etc/apt/trusted.gpg.d/ -name '*.gpg' | while read keyring; do
+ if ! test -s "$keyring"; then
+ rm -f "$keyring"
+ fi
+ done
+ fi
+