jetring-diff keyring1.gpg keyring2.gpg
Given two gpg keyrings, it displays a diff of the changes between the two keyrings. The diff is designed to be sure to show a change whenever anything changes between the two keyrings, with human readability as a secondary criteria. (It is based on gpg --with-colons output.)
This is a low-level command, that is run by higher-level commands like jetring-review.
Joey Hess, <email@example.com>.