this post was submitted on 24 Feb 2026
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The default
difftoolisvimdiff, which is not a GUI program. But no, the point ofdifftoolis to iterate through files to diff and pass the different versions to an external program. There are many external CLI and TUI diffing programs. The point, though, is that the git CLI is still the driver of everything and you still have the full range of options available togit diff, rather than some GUI program being the driver, which are universally limited in what they can do.Personally, I load regular
git diffoutput into a vim buffer via:read. Unified diff is largely superior to side by side diffs, IMO, because most of the time, changes in one file are accompanied by changes in a number of other files, so it's useful to be able to quickly follow a thread of changed calls or whatnot. And with unified diff output, you can see and manipulate hunks directly.