#difftastic has been such a gamechanger for getting a sense of what actually is happening in diffs.
For a language like Clojure, one seemingly small change in s-exp structure normally shows up as a 50-line diff, but with a syntax aware #diff like difftastic, it only shows what has actually changed, ignoring the changes in indentation that usually happens.
Many thanks to @wilfredh for making, and continuing to maintain such a useful tool!
Install it!