Add latest changes from gitlab-org/gitlab@master

2 files changed, 9 insertions, 3 deletions

diff --git a/app/assets/javascripts/diffs/store/actions.js b/app/assets/javascripts/diffs/store/actions.js
index e4f79e76cad..5a3d836a158 100644
--- a/app/assets/javascripts/diffs/store/actions.js
+++ b/app/assets/javascripts/diffs/store/actions.js
@@ -626,7 +626,7 @@ export function switchToFullDiffFromRenamedFile({ commit, dispatch, state }, { d
     .then(({ data }) => {
       const lines = data.map((line, index) =>
         prepareLineForRenamedFile({
-          diffViewType: state.diffViewType,
+          diffViewType: window.gon?.features?.unifiedDiffLines ? 'inline' : state.diffViewType,
           line,
           diffFile,
           index,
@@ -638,6 +638,7 @@ export function switchToFullDiffFromRenamedFile({ commit, dispatch, state }, { d
         viewer: {
           ...diffFile.alternate_viewer,
           automaticallyCollapsed: false,
+          manuallyCollapsed: false,
         },
       });
       commit(types.SET_CURRENT_VIEW_DIFF_FILE_LINES, { filePath: diffFile.file_path, lines });
diff --git a/app/assets/javascripts/diffs/store/mutations.js b/app/assets/javascripts/diffs/store/mutations.js
index 2aeecf6e9f5..096c4f69439 100644
--- a/app/assets/javascripts/diffs/store/mutations.js
+++ b/app/assets/javascripts/diffs/store/mutations.js
@@ -378,8 +378,13 @@ export default {
   },
   [types.SET_CURRENT_VIEW_DIFF_FILE_LINES](state, { filePath, lines }) {
     const file = state.diffFiles.find(f => f.file_path === filePath);
-    const currentDiffLinesKey =
-      state.diffViewType === 'inline' ? 'highlighted_diff_lines' : 'parallel_diff_lines';
+    let currentDiffLinesKey;
+
+    if (window.gon?.features?.unifiedDiffLines || state.diffViewType === 'inline') {
+      currentDiffLinesKey = 'highlighted_diff_lines';
+    } else {
+      currentDiffLinesKey = 'parallel_diff_lines';
+    }
 
     file[currentDiffLinesKey] = lines;
   },