### Problem to solve When reviewing an MR, I often use the filter text box to limit the list of files shown in a diff. This is particularly useful if I'm only reviewing the gitlab-ce~3412464 portion of an MR - I can limit my review by filtering on `vue` or `js` or `scss`, for example. However, this filter only applies to the file _list_ not the diffs themselves. Even if I filter the file list down to a single file, _all_ of the diffs are still shown:  It would be nice if this filter applied to the file diffs as well. ### Intended users gitlab-ce~9335216 ### Proposal Filter both the file list **and** the diffs based on the filter text. ### Links / references