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, 9 insertions, 0 deletions

diff --git a/app/services/git_push_service.rb b/app/services/git_push_service.rb
index 1e1be8cd04b..b7af80055bf 100644
--- a/app/services/git_push_service.rb
+++ b/app/services/git_push_service.rb
@@ -42,7 +42,12 @@ class GitPushService < BaseService
       # Collect data for this git push
       @push_commits = @project.repository.commits_between(params[:oldrev], params[:newrev])
       process_commit_messages
+
+      # Update the bare repositories info/attributes file using the contents of the default branches
+      # .gitattributes file
+      update_gitattributes if is_default_branch?
     end
+
     # Update merge requests that may be affected by this push. A new branch
     # could cause the last commit of a merge request to change.
     update_merge_requests
@@ -54,6 +59,10 @@ class GitPushService < BaseService
     perform_housekeeping
   end
 
+  def update_gitattributes
+    @project.repository.copy_gitattributes(params[:ref])
+  end
+
   def update_main_language
     # Performance can be bad so for now only check main_language once
     # See https://gitlab.com/gitlab-org/gitlab-ce/issues/14937