1 files changed, 17 insertions, 1 deletions
diff --git a/app/finders/branches_finder.rb b/app/finders/branches_finder.rb
index a62d47071d4..dc7b9f6a0ce 100644
--- a/app/finders/branches_finder.rb
+++ b/app/finders/branches_finder.rb
@@ -6,11 +6,12 @@ class BranchesFinder < GitRefsFinder
   end
 
   def execute(gitaly_pagination: false)
-    if gitaly_pagination && names.blank? && search.blank?
+    if gitaly_pagination && names.blank? && search.blank? && regex.blank?
       repository.branches_sorted_by(sort, pagination_params)
     else
       branches = repository.branches_sorted_by(sort)
       branches = by_search(branches)
+      branches = by_regex(branches)
       by_names(branches)
     end
   end
@@ -29,6 +30,11 @@ class BranchesFinder < GitRefsFinder
     @params[:per_page].presence
   end
 
+  def regex
+    @params[:regex].to_s.presence
+  end
+  strong_memoize_attr :regex
+
   def page_token
     "#{Gitlab::Git::BRANCH_REF_PREFIX}#{@params[:page_token]}" if @params[:page_token]
   end
@@ -45,4 +51,14 @@ class BranchesFinder < GitRefsFinder
       branch_names.include?(branch.name)
     end
   end
+
+  def by_regex(branches)
+    return branches unless regex
+
+    branch_filter = ::Gitlab::UntrustedRegexp.new(regex)
+
+    branches.select do |branch|
+      branch_filter.match?(branch.name)
+    end
+  end
 end