Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- `app/models/public_feed.rb`:
  Upstream refactored a bit, glitch-soc had specific code for local-only
  statuses.
  Updated glitch-soc's specific code accordingly.

lib/enumerable.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+module Enumerable
+  # TODO: Remove this once stop to support Ruby 2.6
+  if RUBY_VERSION < '2.7.0'
+    def filter_map
+      if block_given?
+        result = []
+        each do |element|
+          res = yield element
+          result << res if res
+        end
+        result
+      else
+        Enumerator.new do |yielder|
+          result = []
+          each do |element|
+            res = yielder.yield element
+            result << res if res
+          end
+          result
+        end
+      end
+    end
+  end
+end

lib/mastodon/maintenance_cli.rb

@@ -160,6 +160,7 @@ module Mastodon
       deduplicate_tags!
       deduplicate_webauthn_credentials!
 
+      Scenic.database.refresh_materialized_view('instances', concurrently: true, cascade: false) if ActiveRecord::Migrator.current_version >= 2020_12_06_004238
       Rails.cache.clear
 
       @prompt.say 'Finished!'
@@ -188,6 +189,11 @@ module Mastodon
       else
         ActiveRecord::Base.connection.add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true
       end
+
+      @prompt.say 'Reindexing textual indexes on accounts…'
+      ActiveRecord::Base.connection.execute('REINDEX INDEX search_index;')
+      ActiveRecord::Base.connection.execute('REINDEX INDEX index_accounts_on_uri;')
+      ActiveRecord::Base.connection.execute('REINDEX INDEX index_accounts_on_url;')
     end
 
     def deduplicate_users!

lib/paperclip/attachment_extensions.rb

@@ -27,7 +27,7 @@ module Paperclip
       return true  if original_filename == other_filename
       return false if original_filename.nil?
 
-      formats = styles.values.map(&:format).compact
+      formats = styles.values.filter_map(&:format)
 
       return false if formats.empty?
 

lib/paperclip/color_extractor.rb

@@ -142,7 +142,7 @@ module Paperclip
       g = 0.0
       b = 0.0
 
-      if s == 0.0
+      if s.zero?
         r = l.to_f
         g = l.to_f
         b = l.to_f # achromatic