triagebot: Amend a review to include a link to what was changed since

[samueltardieu]

This feature adds a handy link to each review message (it doesn't create a new comment) that allows the reviewer or other people to check what has been changed in the PR since the review took place.

changelog: none

r? flip1995

[samueltardieu]

Example: rust-lang/rust#145924 (review)

The advantage, compared to GitHub's compare button, is that it is cumulative should other changes take place.

[flip1995]

I also saw that in the Rust repo. Isn't this redundant with the range-diff? Wouldn't it make sense to implement the range-diff in this way?

All questions for triagebot. But I think this is nice to have in the repo!

[samueltardieu]

I also saw that in the Rust repo. Isn't this redundant with the range-diff? Wouldn't it make sense to implement the range-diff in this way?

They are different: range-diff summarizes what has changed even though a rebase occurred, while this option shows all changes that happened since a review happened.

One advantage is, for example, if you make a review and the submitter pushes several changes, you can see a summary of the changes between the version you reviewed and the new one. Both options "solve" different problems.