Mark inline difference between old and new paths when a file is renamed

4 files changed, 50 insertions, 11 deletions

diff --git a/app/assets/stylesheets/framework/files.scss b/app/assets/stylesheets/framework/files.scss
index 00cb756b376..c7f3604850d 100644
--- a/app/assets/stylesheets/framework/files.scss
+++ b/app/assets/stylesheets/framework/files.scss
@@ -36,6 +36,20 @@
       }
     }
 
+    .filename {
+      &.old {
+        span.idiff {
+          background-color: #f8cbcb;
+        }
+      }
+
+      &.new {
+        span.idiff {
+          background-color: #a6f3a6;
+        }
+      }
+    }
+
     .left-options {
       margin-top: -3px;
     }
@@ -158,3 +172,15 @@
     }
   }
 }
+
+span.idiff {
+  &.left {
+    border-top-left-radius: 2px;
+    border-bottom-left-radius: 2px;
+  }
+
+  &.right {
+    border-top-right-radius: 2px;
+    border-bottom-right-radius: 2px;
+  }
+}
diff --git a/app/helpers/diff_helper.rb b/app/helpers/diff_helper.rb
index 62971d1e14b..0b4fda12788 100644
--- a/app/helpers/diff_helper.rb
+++ b/app/helpers/diff_helper.rb
@@ -1,4 +1,13 @@
 module DiffHelper
+  def mark_inline_diffs(old_line, new_line)
+    old_diffs, new_diffs = Gitlab::Diff::InlineDiff.new(old_line, new_line).inline_diffs
+
+    marked_old_line = Gitlab::Diff::InlineDiffMarker.new(old_line).mark(old_diffs).html_safe
+    marked_new_line = Gitlab::Diff::InlineDiffMarker.new(new_line).mark(new_diffs).html_safe
+
+    [marked_old_line, marked_new_line]
+  end
+
   def diff_view
     params[:view] == 'parallel' ? 'parallel' : 'inline'
   end
@@ -55,7 +64,7 @@ module DiffHelper
     if line.blank?
       "  ".html_safe
     else
-      line.html_safe
+      line
     end
   end
 
diff --git a/app/views/notify/repository_push_email.html.haml b/app/views/notify/repository_push_email.html.haml
index 3dd2595f1ad..f2e405b14fd 100644
--- a/app/views/notify/repository_push_email.html.haml
+++ b/app/views/notify/repository_push_email.html.haml
@@ -18,7 +18,7 @@
         %div
           %span by #{commit.author_name}
           %i at #{commit.committed_date.to_s(:iso8601)}
-        %pre.commit-message 
+        %pre.commit-message
           = commit.safe_message
 
   %h4 #{pluralize @message.diffs_count, "changed file"}:
diff --git a/app/views/projects/diffs/_file.html.haml b/app/views/projects/diffs/_file.html.haml
index fc0eaef2286..3ac058a3bf8 100644
--- a/app/views/projects/diffs/_file.html.haml
+++ b/app/views/projects/diffs/_file.html.haml
@@ -7,16 +7,20 @@
           = submodule_link(blob, @commit.id, project.repository)
     - else
       = blob_icon blob.mode, blob.name
-      = link_to "#diff-#{i}" do
-        %strong
-          = diff_file.new_path
 
-      - if diff_file.deleted_file
-        deleted
-      - elsif diff_file.renamed_file
-        renamed from
-        %strong
-          = diff_file.old_path
+      = link_to "#diff-#{i}" do
+        - if diff_file.renamed_file
+          - old_path, new_path = mark_inline_diffs(diff_file.old_path, diff_file.new_path)
+          %strong.filename.old
+            = old_path
+          →
+          %strong.filename.new
+            = new_path
+        - else
+          %strong
+            = diff_file.new_path
+          - if diff_file.deleted_file
+            deleted
 
       - if diff_file.mode_changed?
         %small