Diff is incredibly useful on its own. I use diff a lot, and I think 95% of my use of diff is to figure out what has changed without any intention to apply a pat

Diff is incredibly useful on its own. I use diff a lot, and I think 95% of my use of diff is to figure out what has changed without any intention to apply a patch. Furthermore, it’s likely been 20 years since I used “patch” - I almost never apply an entire diff/patch, but rather parts of it interactively with kdiff3 or beyondcompare