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

Conflicts:
- `app/javascript/mastodon/actions/compose.js`:
  Not a “real” conflict, but change too close to a change we made to
  fix the vanilla WebUI locally pushing authored local-only toots in the
  public TL view.

spec/lib/feed_manager_spec.rb

@@ -531,4 +531,29 @@ RSpec.describe FeedManager do
       expect(Redis.current).to have_received(:publish).with("timeline:#{receiver.id}", deletion)
     end
   end
+
+  describe '#clear_from_timeline' do
+    let(:account)          { Fabricate(:account) }
+    let(:followed_account) { Fabricate(:account) }
+    let(:target_account)   { Fabricate(:account) }
+    let(:status_1)         { Fabricate(:status, account: followed_account) }
+    let(:status_2)         { Fabricate(:status, account: target_account) }
+    let(:status_3)         { Fabricate(:status, account: followed_account, mentions: [Fabricate(:mention, account: target_account)]) }
+    let(:status_4)         { Fabricate(:status, mentions: [Fabricate(:mention, account: target_account)]) }
+    let(:status_5)         { Fabricate(:status, account: followed_account, reblog: status_4) }
+    let(:status_6)         { Fabricate(:status, account: followed_account, reblog: status_2) }
+    let(:status_7)         { Fabricate(:status, account: followed_account) }
+
+    before do
+      [status_1, status_3, status_5, status_6, status_7].each do |status|
+        Redis.current.zadd("feed:home:#{account.id}", status.id, status.id)
+      end
+    end
+
+    it 'correctly cleans the timeline' do
+      FeedManager.instance.clear_from_timeline(account, target_account)
+
+      expect(Redis.current.zrange("feed:home:#{account.id}", 0, -1)).to eq [status_1.id.to_s, status_7.id.to_s]
+    end
+  end
 end