1 files changed, 5 insertions, 0 deletions

diff --git a/app/helpers/revisions_helper.rb b/app/helpers/revisions_helper.rb
index fdb51f8..a629013 100644
--- a/app/helpers/revisions_helper.rb
+++ b/app/helpers/revisions_helper.rb
@@ -1,2 +1,7 @@
 module RevisionsHelper
+  # Human-readable label for a diff endpoint -- "head"/"draft"/"autosave"
+  # get their name; anything else is a revision number.
+  def describe_page_reference(ref)
+    %w[head draft autosave].include?(ref.to_s) ? ref.to_s.capitalize : "revision #{ref}"
+  end
 end