[skrebbel]

Many IDEs have built in support for this and I find it very useful. Good that it is coming to the command line too!

It works great as a code review tool, too. Agree on a marker, add review comments to code, commit to source control and tell your team mate about it. It's just about at-your-fingertips as diffs-with-comments tools (like github PRs), and way lighter on the tooling. You also see all the context, not just the changed lines. Eg:

    // REVIEW(me): This is getting big, maybe split into two classes?

In smaller teams (say, <5 people on a single shared codebase) I've found this to work remarkably well.