diffsoup: view interdiffs between github pull request versions per commit

[junglerobba]

https://github.com/junglerobba/diffsoup

name inspired by this post

jj interdiff is great, but it's a bit hard to use when reviewing PRs, especially those containing multiple commits, because then it involves a bunch of manual work copying around commit ids, fetching commits if it's someone else's code, figuring out which commit you actually want to compare / which ones didn't change at all. This tool is an attempt to do this automatically, so all you have to provide is a local copy of the repo and a pull request url.

This started out as a small bash script / fzf picker showing interdiffs, but grew into this tui application using jj-lib to make it more manageable.

It's all basically working around the fact that github etc always show the entire diff of a branch including incoming changes from trunk, even when using the small and well-hidden "Compare changes" button.

[jasikpark]

How does that work? Should diffsoup --from new-branch --to base work? I'm getting an error when I do so.

[jasikpark]

Ah, looks like if I pass git commits, it works. I'm guessing passing a PR url would grab the current values?

[junglerobba]

Ah yes the from and to flags don’t really serve a good purpose anymore, they’re just left over from the initial version before I implemented pulling the info from a PR directly.
They’re also kinda useless, because when you provide a PR url any arbitrary two versions of the PR can be compared, whereas the from and to flags basically do the same as jj interdiff already does, only over an entire branch (but then, git range-diff also does that…)

[thoughtpolice]

This one slipped by my notifications; glad I could help you solve the hardest problem of all (naming)! I might give this a try for jj itself, thank you!