<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=346634) </details> <!--IssueSummary end--> <!-- This template is a great use for issues that are feature::additions or technical tasks for larger issues.--> ### Proposal When reviewing a Merge request it's common to encounter inadvertent changes, that one might want to revert. To be kind I typically type a "```suggestion" block that suggests reverting the change, which can be quickly applied. I'd like to see a control added to the "Commenting on lines" message box that would insert that revert suggestion snippet. I imagine it could fit in well in between the buttons that add lists, tables etc, as seen in the (unedited) screenshot below.  Such a button could make it easier for reviewer & developer (sometimes the same person) to undo changes quickly, without leaving GitLab & breaking flow. In particular it would alleviate both from having to comment "Revert this" and apply that change somewhere else.