### Description If a merge request changes a file, it's easy enough to edit that file from the merge request itself. But if you want to change a different file, perhaps because it's a new, empty merge request, then it's hard to get started. We should make it easy to edit files directly from the MR. ### Proposal ### Links / references * Related: https://gitlab.com/gitlab-org/gitlab-ce/issues/28558 ### Documentation blurb (Write the start of the documentation of this feature here, include: 1. Why should someone use it; what's the underlying problem. 2. What is the solution. 3. How does someone use this During implementation, this can then be copied and used as a starter for the documentation.)