Support supressing text file diffs on the default branch with .gitattributes

This is a combination of 3 commits.

- Update the bare repositories info/attributes if the default branch is updated
- Check the diff attributes of a file before showing a diff
- Update CHANGELOG

1 files changed, 13 insertions, 13 deletions

diff --git a/app/views/projects/diffs/_file.html.haml b/app/views/projects/diffs/_file.html.haml
index 83a8d7ae9bf..0f04fc5d33c 100644
--- a/app/views/projects/diffs/_file.html.haml
+++ b/app/views/projects/diffs/_file.html.haml
@@ -40,19 +40,19 @@
         = view_file_btn(diff_commit.id, diff_file, project)
 
   .diff-content.diff-wrap-lines
-    -# Skipp all non non-supported blobs
+    - # Skip all non non-supported blobs
     - return unless blob.respond_to?('text?')
     - if diff_file.too_large?
-      .nothing-here-block
-        This diff could not be displayed because it is too large.
-    - else
-      - if blob_text_viewable?(blob)
-        - if diff_view == 'parallel'
-          = render "projects/diffs/parallel_view", diff_file: diff_file, project: project, blob: blob, index: i
-        - else
-          = render "projects/diffs/text_file", diff_file: diff_file, index: i
-      - elsif blob.image?
-        - old_file = project.repository.prev_blob_for_diff(diff_commit, diff_file)
-        = render "projects/diffs/image", diff_file: diff_file, old_file: old_file, file: blob, index: i, diff_refs: diff_refs
+      .nothing-here-block This diff could not be displayed because it is too large.
+    - elsif blob_text_viewable?(blob) && !project.repository.diffable?(blob)
+      .nothing-here-block This diff was suppressed by a .gitattributes entry.
+    - elsif blob_text_viewable?(blob)
+      - if diff_view == 'parallel'
+        = render "projects/diffs/parallel_view", diff_file: diff_file, project: project, blob: blob, index: i
       - else
-        .nothing-here-block No preview for this file type
+        = render "projects/diffs/text_file", diff_file: diff_file, index: i
+    - elsif blob.image?
+      - old_file = project.repository.prev_blob_for_diff(diff_commit, diff_file)
+      = render "projects/diffs/image", diff_file: diff_file, old_file: old_file, file: blob, index: i, diff_refs: diff_refs
+    - else
+      .nothing-here-block No preview for this file type