Add a forgotten default value for ignored_paths

1 files changed, 3 insertions, 2 deletions

diff --git a/tool/sync_default_gems.rb b/tool/sync_default_gems.rb
index ce6a6dd0ae..1f2e0ddf4d 100755
--- a/tool/sync_default_gems.rb
+++ b/tool/sync_default_gems.rb
@@ -572,15 +572,16 @@ module SyncDefaultGems
       elsif /^CONFLICT/ =~ result
         # Forcibly remove any files that we don't want to copy to this repository.
         # We also ignore them as new `toplevels` even when they don't conflict.
+        ignored_paths = []
         case gem
         when "rubygems"
           # We don't copy any vcr_cassettes to this repository. Because the directory does not
           # exist, rename detection doesn't work. So it starts with the original path `bundler/`.
-          ignored_paths = %w[bundler/spec/support/artifice/vcr_cassettes]
+          ignored_paths += %w[bundler/spec/support/artifice/vcr_cassettes]
         when "yarp"
           # Rename detection never works between ruby/ruby/doc and ruby/yarp/docs
           # since ruby/ruby/doc is not something owned by YARP.
-          ignored_paths = %w[docs/]
+          ignored_paths += %w[docs/]
         end
         ignored_paths.each do |path|
           if File.exist?(path)