Request a convenient way to see review comments together with the resulting code changes

[LouisStrous]

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I request the ability to conveniently and simultaneously view unresolved review comments and the code changes that were made since that review.

It appears that GitHub currently cannot simultaneously show these in a single view, see https://github.com/orgs/community/discussions/152334. I can see the review comments in the context of the old code changes that they apply to (e.g., in the "Conversation" view) but then the new code changes that were made to resolve the review comments aren't simultaneously visible. Or I can see the new code changes (e.g., in the "Files changed" view configured to show the changes since the last review) but then the review comments that prompted those changes aren't visible.

I can work around this problem by arranging two separate browser windows side by side, one to show the old review comments and one to show the new code changes, but then I need a very wide screen and I have to do the work figuring out which new code change is associated with which old review comment. The latter is tedious and an excellent candidate for automation.

This means that the process of reviewing code changes isn't as convenient as it could be. To complete a code review I need to inspect the new code changes, check that they resolve the old review comments, and then mark those old review comments as resolved. This would be most conveniently done in a view that simultaneously showed the review comments, the old code changes that they applied to, and the new code changes that were made after those review comments.

One way in which it could be done is to display a three-way comparison, as is common for resolving merge conflicts. The "A" version could be the base commit of the previous review (or the oldest commit that has unresolved review comments associated with it). The "B" version could be the last commit included in the previous review, which is equal to the base commit of the latest changes. And the "C" version could be the most recent commit. The "A" and "B" versions could have the (unresolved) review comments in them, as in the "Conversations" view. This, too, requires a wide screen, but not nearly as wide as having two separate browser windows as required by the current workaround.

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