Merge branch 'glitch' into main

15 files changed, 721 insertions, 173 deletions

diff --git a/app/javascript/flavours/glitch/actions/streaming.js b/app/javascript/flavours/glitch/actions/streaming.js
index 0253c24b2..35db5dcc9 100644
--- a/app/javascript/flavours/glitch/actions/streaming.js
+++ b/app/javascript/flavours/glitch/actions/streaming.js
@@ -1,3 +1,5 @@
+// @ts-check
+
 import { connectStream } from 'flavours/glitch/util/stream';
 import {
   updateTimeline,
@@ -19,24 +21,59 @@ import { getLocale } from 'mastodon/locales';
 
 const { messages } = getLocale();
 
-export function connectTimelineStream (timelineId, path, pollingRefresh = null, accept = null) {
+/**
+ * @param {number} max
+ * @return {number}
+ */
+const randomUpTo = max =>
+  Math.floor(Math.random() * Math.floor(max));
 
-  return connectStream (path, pollingRefresh, (dispatch, getState) => {
+/**
+ * @param {string} timelineId
+ * @param {string} channelName
+ * @param {Object.<string, string>} params
+ * @param {Object} options
+ * @param {function(Function, Function): void} [options.fallback]
+ * @param {function(object): boolean} [options.accept]
+ * @return {function(): void}
+ */
+export const connectTimelineStream = (timelineId, channelName, params = {}, options = {}) =>
+  connectStream(channelName, params, (dispatch, getState) => {
     const locale = getState().getIn(['meta', 'locale']);
 
+    let pollingId;
+
+    /**
+     * @param {function(Function, Function): void} fallback
+     */
+    const useFallback = fallback => {
+      fallback(dispatch, () => {
+        pollingId = setTimeout(() => useFallback(fallback), 20000 + randomUpTo(20000));
+      });
+    };
+
     return {
       onConnect() {
         dispatch(connectTimeline(timelineId));
+
+        if (pollingId) {
+          clearTimeout(pollingId);
+          pollingId = null;
+        }
       },
 
       onDisconnect() {
         dispatch(disconnectTimeline(timelineId));
+
+        if (options.fallback) {
+          pollingId = setTimeout(() => useFallback(options.fallback), randomUpTo(40000));
+        }
       },
 
       onReceive (data) {
         switch(data.event) {
         case 'update':
-          dispatch(updateTimeline(timelineId, JSON.parse(data.payload), accept));
+          dispatch(updateTimeline(timelineId, JSON.parse(data.payload), options.accept));
           break;
         case 'delete':
           dispatch(deleteFromTimelines(data.payload));
@@ -63,17 +100,60 @@ export function connectTimelineStream (timelineId, path, pollingRefresh = null,
       },
     };
   });
-}
 
+/**
+ * @param {Function} dispatch
+ * @param {function(): void} done
+ */
 const refreshHomeTimelineAndNotification = (dispatch, done) => {
   dispatch(expandHomeTimeline({}, () =>
     dispatch(expandNotifications({}, () =>
       dispatch(fetchAnnouncements(done))))));
 };
 
-export const connectUserStream      = () => connectTimelineStream('home', 'user', refreshHomeTimelineAndNotification);
-export const connectCommunityStream = ({ onlyMedia } = {}) => connectTimelineStream(`community${onlyMedia ? ':media' : ''}`, `public:local${onlyMedia ? ':media' : ''}`);
-export const connectPublicStream    = ({ onlyMedia, onlyRemote, allowLocalOnly } = {}) => connectTimelineStream(`public${onlyRemote ? ':remote' : (allowLocalOnly ? ':allow_local_only' : '')}${onlyMedia ? ':media' : ''}`, `public${onlyRemote ? ':remote' : (allowLocalOnly ? ':allow_local_only' : '')}${onlyMedia ? ':media' : ''}`);
-export const connectHashtagStream   = (id, tag, local, accept) => connectTimelineStream(`hashtag:${id}${local ? ':local' : ''}`, `hashtag${local ? ':local' : ''}&tag=${tag}`, null, accept);
-export const connectDirectStream    = () => connectTimelineStream('direct', 'direct');
-export const connectListStream      = id => connectTimelineStream(`list:${id}`, `list&list=${id}`);
+/**
+ * @return {function(): void}
+ */
+export const connectUserStream = () =>
+  connectTimelineStream('home', 'user', {}, { fallback: refreshHomeTimelineAndNotification });
+
+/**
+ * @param {Object} options
+ * @param {boolean} [options.onlyMedia]
+ * @return {function(): void}
+ */
+export const connectCommunityStream = ({ onlyMedia } = {}) =>
+  connectTimelineStream(`community${onlyMedia ? ':media' : ''}`, `public:local${onlyMedia ? ':media' : ''}`);
+
+/**
+ * @param {Object} options
+ * @param {boolean} [options.onlyMedia]
+ * @param {boolean} [options.onlyRemote]
+ * @param {boolean} [options.allowLocalOnly]
+ * @return {function(): void}
+ */
+export const connectPublicStream = ({ onlyMedia, onlyRemote, allowLocalOnly } = {}) =>
+  connectTimelineStream(`public${onlyRemote ? ':remote' : (allowLocalOnly ? ':allow_local_only' : '')}${onlyMedia ? ':media' : ''}`, `public${onlyRemote ? ':remote' : (allowLocalOnly ? ':allow_local_only' : '')}${onlyMedia ? ':media' : ''}`);
+
+/**
+ * @param {string} columnId
+ * @param {string} tagName
+ * @param {boolean} onlyLocal
+ * @param {function(object): boolean} accept
+ * @return {function(): void}
+ */
+export const connectHashtagStream = (columnId, tagName, onlyLocal, accept) =>
+  connectTimelineStream(`hashtag:${columnId}${onlyLocal ? ':local' : ''}`, `hashtag${onlyLocal ? ':local' : ''}`, { tag: tagName }, { accept });
+
+/**
+ * @return {function(): void}
+ */
+export const connectDirectStream = () =>
+  connectTimelineStream('direct', 'direct');
+
+/**
+ * @param {string} listId
+ * @return {function(): void}
+ */
+export const connectListStream = listId =>
+  connectTimelineStream(`list:${listId}`, 'list', { list: listId });
diff --git a/app/javascript/flavours/glitch/features/account/components/header.js b/app/javascript/flavours/glitch/features/account/components/header.js
index 572f34fa0..0af0935e6 100644
--- a/app/javascript/flavours/glitch/features/account/components/header.js
+++ b/app/javascript/flavours/glitch/features/account/components/header.js
@@ -66,6 +66,15 @@ class Header extends ImmutablePureComponent {
     identity_props: ImmutablePropTypes.list,
     onFollow: PropTypes.func.isRequired,
     onBlock: PropTypes.func.isRequired,
+    onMention: PropTypes.func.isRequired,
+    onDirect: PropTypes.func.isRequired,
+    onReport: PropTypes.func.isRequired,
+    onReblogToggle: PropTypes.func.isRequired,
+    onMute: PropTypes.func.isRequired,
+    onBlockDomain: PropTypes.func.isRequired,
+    onUnblockDomain: PropTypes.func.isRequired,
+    onEndorseToggle: PropTypes.func.isRequired,
+    onAddToList: PropTypes.func.isRequired,
     onEditAccountNote: PropTypes.func.isRequired,
     intl: PropTypes.object.isRequired,
     domain: PropTypes.string.isRequired,
diff --git a/app/javascript/flavours/glitch/features/account_timeline/components/header.js b/app/javascript/flavours/glitch/features/account_timeline/components/header.js
index 1bab05c72..8195735a1 100644
--- a/app/javascript/flavours/glitch/features/account_timeline/components/header.js
+++ b/app/javascript/flavours/glitch/features/account_timeline/components/header.js
@@ -24,7 +24,6 @@ export default class Header extends ImmutablePureComponent {
     onUnblockDomain: PropTypes.func.isRequired,
     onEndorseToggle: PropTypes.func.isRequired,
     onAddToList: PropTypes.func.isRequired,
-    onEditAccountNote: PropTypes.func.isRequired,
     hideTabs: PropTypes.bool,
     domain: PropTypes.string.isRequired,
   };
diff --git a/app/javascript/flavours/glitch/features/audio/index.js b/app/javascript/flavours/glitch/features/audio/index.js
index 4e85e3c58..7a2fb7fb6 100644
--- a/app/javascript/flavours/glitch/features/audio/index.js
+++ b/app/javascript/flavours/glitch/features/audio/index.js
@@ -68,11 +68,13 @@ class Audio extends React.PureComponent {
     const width  = this.player.offsetWidth;
     const height = this.props.fullscreen ? this.player.offsetHeight : (width / (16/9));
 
-    if (this.props.cacheWidth) {
-      this.props.cacheWidth(width);
-    }
+    if (width && width != this.state.containerWidth) {
+      if (this.props.cacheWidth) {
+        this.props.cacheWidth(width);
+      }
 
-    this.setState({ width, height });
+      this.setState({ width, height });
+    }
   }
 
   setSeekRef = c => {
@@ -102,6 +104,10 @@ class Audio extends React.PureComponent {
   }
 
   componentDidUpdate (prevProps, prevState) {
+    if (this.player) {
+      this._setDimensions();
+    }
+
     if (prevProps.src !== this.props.src || this.state.width !== prevState.width || this.state.height !== prevState.height || prevProps.accentColor !== this.props.accentColor) {
       this._clear();
       this._draw();
@@ -113,6 +119,10 @@ class Audio extends React.PureComponent {
   }
 
   togglePlay = () => {
+    if (!this.audioContext) {
+      this._initAudioContext();
+    }
+
     if (this.state.paused) {
       this.setState({ paused: false }, () => this.audio.play());
     } else {
@@ -131,10 +141,6 @@ class Audio extends React.PureComponent {
   handlePlay = () => {
     this.setState({ paused: false });
 
-    if (this.canvas && !this.audioContext) {
-      this._initAudioContext();
-    }
-
     if (this.audioContext && this.audioContext.state === 'suspended') {
       this.audioContext.resume();
     }
@@ -254,8 +260,9 @@ class Audio extends React.PureComponent {
   }
 
   _initAudioContext () {
-    const context  = new AudioContext();
-    const source   = context.createMediaElementSource(this.audio);
+    const AudioContext = window.AudioContext || window.webkitAudioContext;
+    const context      = new AudioContext();
+    const source       = context.createMediaElementSource(this.audio);
 
     this.visualizer.setAudioContext(context, source);
     source.connect(context.destination);
diff --git a/app/javascript/flavours/glitch/features/compose/containers/warning_container.js b/app/javascript/flavours/glitch/features/compose/containers/warning_container.js
index b9b0a2644..ab9d2123a 100644
--- a/app/javascript/flavours/glitch/features/compose/containers/warning_container.js
+++ b/app/javascript/flavours/glitch/features/compose/containers/warning_container.js
@@ -6,7 +6,30 @@ import { FormattedMessage } from 'react-intl';
 import { me } from 'flavours/glitch/util/initial_state';
 import { profileLink, termsLink } from 'flavours/glitch/util/backend_links';
 
-const APPROX_HASHTAG_RE = /(?:^|[^\/\)\w])#(\w*[a-zA-Z·]\w*)/i;
+const buildHashtagRE = () => {
+  try {
+    const HASHTAG_SEPARATORS = "_\\u00b7\\u200c";
+    const ALPHA = '\\p{L}\\p{M}';
+    const WORD = '\\p{L}\\p{M}\\p{N}\\p{Pc}';
+    return new RegExp(
+      '(?:^|[^\\/\\)\\w])#((' +
+      '[' + WORD + '_]' +
+      '[' + WORD + HASHTAG_SEPARATORS + ']*' +
+      '[' + ALPHA + HASHTAG_SEPARATORS + ']' +
+      '[' + WORD + HASHTAG_SEPARATORS +']*' +
+      '[' + WORD + '_]' +
+      ')|(' +
+      '[' + WORD + '_]*' +
+      '[' + ALPHA + ']' +
+      '[' + WORD + '_]*' +
+      '))', 'iu'
+    );
+  } catch {
+    return /(?:^|[^\/\)\w])#(\w*[a-zA-Z·]\w*)/i;
+  }
+};
+
+const APPROX_HASHTAG_RE = buildHashtagRE();
 
 const mapStateToProps = state => ({
   needsLockWarning: state.getIn(['compose', 'privacy']) === 'private' && !state.getIn(['accounts', me, 'locked']),
diff --git a/app/javascript/flavours/glitch/reducers/compose.js b/app/javascript/flavours/glitch/reducers/compose.js
index a2cac88ac..daf857541 100644
--- a/app/javascript/flavours/glitch/reducers/compose.js
+++ b/app/javascript/flavours/glitch/reducers/compose.js
@@ -501,8 +501,11 @@ export default function compose(state = initialState, action) {
   case COMPOSE_DOODLE_SET:
     return state.mergeIn(['doodle'], action.options);
   case REDRAFT:
+    const do_not_federate = action.status.get('local_only', false);
+    let text = action.raw_text || unescapeHTML(expandMentions(action.status));
+    if (do_not_federate) text = text.replace(/ ?👁\ufe0f?\u200b?$/, '');
     return state.withMutations(map => {
-      map.set('text', action.raw_text || unescapeHTML(expandMentions(action.status)));
+      map.set('text', text);
       map.set('content_type', action.content_type || 'text/plain');
       map.set('in_reply_to', action.status.get('in_reply_to_id'));
       map.set('privacy', action.status.get('visibility'));
@@ -511,6 +514,10 @@ export default function compose(state = initialState, action) {
       map.set('caretPosition', null);
       map.set('idempotencyKey', uuid());
       map.set('sensitive', action.status.get('sensitive'));
+      map.update(
+        'advanced_options',
+        map => map.merge(new ImmutableMap({ do_not_federate }))
+      );
 
       if (action.status.get('spoiler_text').length > 0) {
         map.set('spoiler', true);
diff --git a/app/javascript/flavours/glitch/util/stream.js b/app/javascript/flavours/glitch/util/stream.js
index 0cb2b228f..640455b33 100644
--- a/app/javascript/flavours/glitch/util/stream.js
+++ b/app/javascript/flavours/glitch/util/stream.js
@@ -1,87 +1,236 @@
+// @ts-check
+
 import WebSocketClient from '@gamestdio/websocket';
 
-const randomIntUpTo = max => Math.floor(Math.random() * Math.floor(max));
+/**
+ * @type {WebSocketClient | undefined}
+ */
+let sharedConnection;
 
-const knownEventTypes = [
-  'update',
-  'delete',
-  'notification',
-  'conversation',
-  'filters_changed',
-];
+/**
+ * @typedef Subscription
+ * @property {string} channelName
+ * @property {Object.<string, string>} params
+ * @property {function(): void} onConnect
+ * @property {function(StreamEvent): void} onReceive
+ * @property {function(): void} onDisconnect
+ */
 
-export function connectStream(path, pollingRefresh = null, callbacks = () => ({ onConnect() {}, onDisconnect() {}, onReceive() {} })) {
-  return (dispatch, getState) => {
-    const streamingAPIBaseURL = getState().getIn(['meta', 'streaming_api_base_url']);
-    const accessToken = getState().getIn(['meta', 'access_token']);
-    const { onConnect, onDisconnect, onReceive } = callbacks(dispatch, getState);
+ /**
+  * @typedef StreamEvent
+  * @property {string} event
+  * @property {object} payload
+  */
 
-    let polling = null;
+/**
+ * @type {Array.<Subscription>}
+ */
+const subscriptions = [];
 
-    const setupPolling = () => {
-      pollingRefresh(dispatch, () => {
-        polling = setTimeout(() => setupPolling(), 20000 + randomIntUpTo(20000));
-      });
-    };
+/**
+ * @type {Object.<string, number>}
+ */
+const subscriptionCounters = {};
+
+/**
+ * @param {Subscription} subscription
+ */
+const addSubscription = subscription => {
+  subscriptions.push(subscription);
+};
+
+/**
+ * @param {Subscription} subscription
+ */
+const removeSubscription = subscription => {
+  const index = subscriptions.indexOf(subscription);
+
+  if (index !== -1) {
+    subscriptions.splice(index, 1);
+  }
+};
+
+/**
+ * @param {Subscription} subscription
+ */
+const subscribe = ({ channelName, params, onConnect }) => {
+  const key = channelNameWithInlineParams(channelName, params);
+
+  subscriptionCounters[key] = subscriptionCounters[key] || 0;
+
+  if (subscriptionCounters[key] === 0) {
+    sharedConnection.send(JSON.stringify({ type: 'subscribe', stream: channelName, ...params }));
+  }
+
+  subscriptionCounters[key] += 1;
+  onConnect();
+};
+
+/**
+ * @param {Subscription} subscription
+ */
+const unsubscribe = ({ channelName, params, onDisconnect }) => {
+  const key = channelNameWithInlineParams(channelName, params);
 
-    const clearPolling = () => {
-      if (polling) {
-        clearTimeout(polling);
-        polling = null;
+  subscriptionCounters[key] = subscriptionCounters[key] || 1;
+
+  if (subscriptionCounters[key] === 1 && sharedConnection.readyState === WebSocketClient.OPEN) {
+    sharedConnection.send(JSON.stringify({ type: 'unsubscribe', stream: channelName, ...params }));
+  }
+
+  subscriptionCounters[key] -= 1;
+  onDisconnect();
+};
+
+const sharedCallbacks = {
+  connected () {
+    subscriptions.forEach(subscription => subscribe(subscription));
+  },
+
+  received (data) {
+    const { stream } = data;
+
+    subscriptions.filter(({ channelName, params }) => {
+      const streamChannelName = stream[0];
+
+      if (stream.length === 1) {
+        return channelName === streamChannelName;
       }
-    };
 
-    const subscription = getStream(streamingAPIBaseURL, accessToken, path, {
-      connected () {
-        if (pollingRefresh) {
-          clearPolling();
-        }
+      const streamIdentifier = stream[1];
 
-        onConnect();
-      },
+      if (['hashtag', 'hashtag:local'].includes(channelName)) {
+        return channelName === streamChannelName && params.tag === streamIdentifier;
+      } else if (channelName === 'list') {
+        return channelName === streamChannelName && params.list === streamIdentifier;
+      }
 
-      disconnected () {
-        if (pollingRefresh) {
-          polling = setTimeout(() => setupPolling(), randomIntUpTo(40000));
-        }
+      return false;
+    }).forEach(subscription => {
+      subscription.onReceive(data);
+    });
+  },
 
-        onDisconnect();
+  disconnected () {
+    subscriptions.forEach(({ onDisconnect }) => onDisconnect());
+  },
+
+  reconnected () {
+    subscriptions.forEach(subscription => subscribe(subscription));
+  },
+};
+
+/**
+ * @param {string} channelName
+ * @param {Object.<string, string>} params
+ * @return {string}
+ */
+const channelNameWithInlineParams = (channelName, params) => {
+  if (Object.keys(params).length === 0) {
+    return channelName;
+  }
+
+  return `${channelName}&${Object.keys(params).map(key => `${key}=${params[key]}`).join('&')}`;
+};
+
+/**
+ * @param {string} channelName
+ * @param {Object.<string, string>} params
+ * @param {function(Function, Function): { onConnect: (function(): void), onReceive: (function(StreamEvent): void), onDisconnect: (function(): void) }} callbacks
+ * @return {function(): void}
+ */
+export const connectStream = (channelName, params, callbacks) => (dispatch, getState) => {
+  const streamingAPIBaseURL = getState().getIn(['meta', 'streaming_api_base_url']);
+  const accessToken = getState().getIn(['meta', 'access_token']);
+  const { onConnect, onReceive, onDisconnect } = callbacks(dispatch, getState);
+
+  // If we cannot use a websockets connection, we must fall back
+  // to using individual connections for each channel
+  if (!streamingAPIBaseURL.startsWith('ws')) {
+    const connection = createConnection(streamingAPIBaseURL, accessToken, channelNameWithInlineParams(channelName, params), {
+      connected () {
+        onConnect();
       },
 
       received (data) {
         onReceive(data);
       },
 
-      reconnected () {
-        if (pollingRefresh) {
-          clearPolling();
-          pollingRefresh(dispatch);
-        }
+      disconnected () {
+        onDisconnect();
+      },
 
+      reconnected () {
         onConnect();
       },
-
     });
 
-    const disconnect = () => {
-      if (subscription) {
-        subscription.close();
-      }
-
-      clearPolling();
+    return () => {
+      connection.close();
     };
+  }
+
+  const subscription = {
+    channelName,
+    params,
+    onConnect,
+    onReceive,
+    onDisconnect,
+  };
+
+  addSubscription(subscription);
+
+  // If a connection is open, we can execute the subscription right now. Otherwise,
+  // because we have already registered it, it will be executed on connect
+
+  if (!sharedConnection) {
+    sharedConnection = /** @type {WebSocketClient} */ (createConnection(streamingAPIBaseURL, accessToken, '', sharedCallbacks));
+  } else if (sharedConnection.readyState === WebSocketClient.OPEN) {
+    subscribe(subscription);
+  }
 
-    return disconnect;
+  return () => {
+    removeSubscription(subscription);
+    unsubscribe(subscription);
   };
-}
+};
+
+const KNOWN_EVENT_TYPES = [
+  'update',
+  'delete',
+  'notification',
+  'conversation',
+  'filters_changed',
+  'encrypted_message',
+  'announcement',
+  'announcement.delete',
+  'announcement.reaction',
+];
+
+/**
+ * @param {MessageEvent} e
+ * @param {function(StreamEvent): void} received
+ */
+const handleEventSourceMessage = (e, received) => {
+  received({
+    event: e.type,
+    payload: e.data,
+  });
+};
 
+/**
+ * @param {string} streamingAPIBaseURL
+ * @param {string} accessToken
+ * @param {string} channelName
+ * @param {{ connected: Function, received: function(StreamEvent): void, disconnected: Function, reconnected: Function }} callbacks
+ * @return {WebSocketClient | EventSource}
+ */
+const createConnection = (streamingAPIBaseURL, accessToken, channelName, { connected, received, disconnected, reconnected }) => {
+  const params = channelName.split('&');
 
-export default function getStream(streamingAPIBaseURL, accessToken, stream, { connected, received, disconnected, reconnected }) {
-  const params = stream.split('&');
-  stream = params.shift();
+  channelName = params.shift();
 
   if (streamingAPIBaseURL.startsWith('ws')) {
-    params.unshift(`stream=${stream}`);
     const ws = new WebSocketClient(`${streamingAPIBaseURL}/api/v1/streaming/?${params.join('&')}`, accessToken);
 
     ws.onopen      = connected;
@@ -92,11 +241,19 @@ export default function getStream(streamingAPIBaseURL, accessToken, stream, { co
     return ws;
   }
 
-  stream = stream.replace(/:/g, '/');
+  channelName = channelName.replace(/:/g, '/');
+
+  if (channelName.endsWith(':media')) {
+    channelName = channelName.replace('/media', '');
+    params.push('only_media=true');
+  }
+
   params.push(`access_token=${accessToken}`);
-  const es = new EventSource(`${streamingAPIBaseURL}/api/v1/streaming/${stream}?${params.join('&')}`);
+
+  const es = new EventSource(`${streamingAPIBaseURL}/api/v1/streaming/${channelName}?${params.join('&')}`);
 
   let firstConnect = true;
+
   es.onopen = () => {
     if (firstConnect) {
       firstConnect = false;
@@ -105,15 +262,12 @@ export default function getStream(streamingAPIBaseURL, accessToken, stream, { co
       reconnected();
     }
   };
-  for (let type of knownEventTypes) {
-    es.addEventListener(type, (e) => {
-      received({
-        event: e.type,
-        payload: e.data,
-      });
-    });
-  }
-  es.onerror = disconnected;
+
+  KNOWN_EVENT_TYPES.forEach(type => {
+    es.addEventListener(type, e => handleEventSourceMessage(/** @type {MessageEvent} */ (e), received));
+  });
+
+  es.onerror = /** @type {function(): void} */ (disconnected);
 
   return es;
 };
diff --git a/app/javascript/mastodon/actions/streaming.js b/app/javascript/mastodon/actions/streaming.js
index d998fcac4..beb5c6a4a 100644
--- a/app/javascript/mastodon/actions/streaming.js
+++ b/app/javascript/mastodon/actions/streaming.js
@@ -1,3 +1,5 @@
+// @ts-check
+
 import { connectStream } from '../stream';
 import {
   updateTimeline,
@@ -19,24 +21,59 @@ import { getLocale } from '../locales';
 
 const { messages } = getLocale();
 
-export function connectTimelineStream (timelineId, path, pollingRefresh = null, accept = null) {
+/**
+ * @param {number} max
+ * @return {number}
+ */
+const randomUpTo = max =>
+  Math.floor(Math.random() * Math.floor(max));
 
-  return connectStream (path, pollingRefresh, (dispatch, getState) => {
+/**
+ * @param {string} timelineId
+ * @param {string} channelName
+ * @param {Object.<string, string>} params
+ * @param {Object} options
+ * @param {function(Function, Function): void} [options.fallback]
+ * @param {function(object): boolean} [options.accept]
+ * @return {function(): void}
+ */
+export const connectTimelineStream = (timelineId, channelName, params = {}, options = {}) =>
+  connectStream(channelName, params, (dispatch, getState) => {
     const locale = getState().getIn(['meta', 'locale']);
 
+    let pollingId;
+
+    /**
+     * @param {function(Function, Function): void} fallback
+     */
+    const useFallback = fallback => {
+      fallback(dispatch, () => {
+        pollingId = setTimeout(() => useFallback(fallback), 20000 + randomUpTo(20000));
+      });
+    };
+
     return {
       onConnect() {
         dispatch(connectTimeline(timelineId));
+
+        if (pollingId) {
+          clearTimeout(pollingId);
+          pollingId = null;
+        }
       },
 
       onDisconnect() {
         dispatch(disconnectTimeline(timelineId));
+
+        if (options.fallback) {
+          pollingId = setTimeout(() => useFallback(options.fallback), randomUpTo(40000));
+        }
       },
 
       onReceive (data) {
         switch(data.event) {
         case 'update':
-          dispatch(updateTimeline(timelineId, JSON.parse(data.payload), accept));
+          dispatch(updateTimeline(timelineId, JSON.parse(data.payload), options.accept));
           break;
         case 'delete':
           dispatch(deleteFromTimelines(data.payload));
@@ -63,17 +100,59 @@ export function connectTimelineStream (timelineId, path, pollingRefresh = null,
       },
     };
   });
-}
 
+/**
+ * @param {Function} dispatch
+ * @param {function(): void} done
+ */
 const refreshHomeTimelineAndNotification = (dispatch, done) => {
   dispatch(expandHomeTimeline({}, () =>
     dispatch(expandNotifications({}, () =>
       dispatch(fetchAnnouncements(done))))));
 };
 
-export const connectUserStream      = () => connectTimelineStream('home', 'user', refreshHomeTimelineAndNotification);
-export const connectCommunityStream = ({ onlyMedia } = {}) => connectTimelineStream(`community${onlyMedia ? ':media' : ''}`, `public:local${onlyMedia ? ':media' : ''}`);
-export const connectPublicStream    = ({ onlyMedia, onlyRemote } = {}) => connectTimelineStream(`public${onlyRemote ? ':remote' : ''}${onlyMedia ? ':media' : ''}`, `public${onlyRemote ? ':remote' : ''}${onlyMedia ? ':media' : ''}`);
-export const connectHashtagStream   = (id, tag, local, accept) => connectTimelineStream(`hashtag:${id}${local ? ':local' : ''}`, `hashtag${local ? ':local' : ''}&tag=${tag}`, null, accept);
-export const connectDirectStream    = () => connectTimelineStream('direct', 'direct');
-export const connectListStream      = id => connectTimelineStream(`list:${id}`, `list&list=${id}`);
+/**
+ * @return {function(): void}
+ */
+export const connectUserStream = () =>
+  connectTimelineStream('home', 'user', {}, { fallback: refreshHomeTimelineAndNotification });
+
+/**
+ * @param {Object} options
+ * @param {boolean} [options.onlyMedia]
+ * @return {function(): void}
+ */
+export const connectCommunityStream = ({ onlyMedia } = {}) =>
+  connectTimelineStream(`community${onlyMedia ? ':media' : ''}`, `public:local${onlyMedia ? ':media' : ''}`);
+
+/**
+ * @param {Object} options
+ * @param {boolean} [options.onlyMedia]
+ * @param {boolean} [options.onlyRemote]
+ * @return {function(): void}
+ */
+export const connectPublicStream = ({ onlyMedia, onlyRemote } = {}) =>
+  connectTimelineStream(`public${onlyRemote ? ':remote' : ''}${onlyMedia ? ':media' : ''}`, `public${onlyRemote ? ':remote' : ''}${onlyMedia ? ':media' : ''}`);
+
+/**
+ * @param {string} columnId
+ * @param {string} tagName
+ * @param {boolean} onlyLocal
+ * @param {function(object): boolean} accept
+ * @return {function(): void}
+ */
+export const connectHashtagStream = (columnId, tagName, onlyLocal, accept) =>
+  connectTimelineStream(`hashtag:${columnId}${onlyLocal ? ':local' : ''}`, `hashtag${onlyLocal ? ':local' : ''}`, { tag: tagName }, { accept });
+
+/**
+ * @return {function(): void}
+ */
+export const connectDirectStream = () =>
+  connectTimelineStream('direct', 'direct');
+
+/**
+ * @param {string} listId
+ * @return {function(): void}
+ */
+export const connectListStream = listId =>
+  connectTimelineStream(`list:${listId}`, 'list', { list: listId });
diff --git a/app/javascript/mastodon/features/account/components/header.js b/app/javascript/mastodon/features/account/components/header.js
index 9613b0b9e..61ecf045d 100644
--- a/app/javascript/mastodon/features/account/components/header.js
+++ b/app/javascript/mastodon/features/account/components/header.js
@@ -66,6 +66,16 @@ class Header extends ImmutablePureComponent {
     identity_props: ImmutablePropTypes.list,
     onFollow: PropTypes.func.isRequired,
     onBlock: PropTypes.func.isRequired,
+    onMention: PropTypes.func.isRequired,
+    onDirect: PropTypes.func.isRequired,
+    onReport: PropTypes.func.isRequired,
+    onReblogToggle: PropTypes.func.isRequired,
+    onMute: PropTypes.func.isRequired,
+    onBlockDomain: PropTypes.func.isRequired,
+    onUnblockDomain: PropTypes.func.isRequired,
+    onEndorseToggle: PropTypes.func.isRequired,
+    onAddToList: PropTypes.func.isRequired,
+    onEditAccountNote: PropTypes.func.isRequired,
     intl: PropTypes.object.isRequired,
     domain: PropTypes.string.isRequired,
   };
diff --git a/app/javascript/mastodon/features/account_timeline/components/header.js b/app/javascript/mastodon/features/account_timeline/components/header.js
index 4e1b27466..abb15edcc 100644
--- a/app/javascript/mastodon/features/account_timeline/components/header.js
+++ b/app/javascript/mastodon/features/account_timeline/components/header.js
@@ -23,7 +23,6 @@ export default class Header extends ImmutablePureComponent {
     onUnblockDomain: PropTypes.func.isRequired,
     onEndorseToggle: PropTypes.func.isRequired,
     onAddToList: PropTypes.func.isRequired,
-    onEditAccountNote: PropTypes.func.isRequired,
     hideTabs: PropTypes.bool,
     domain: PropTypes.string.isRequired,
   };
diff --git a/app/javascript/mastodon/features/audio/index.js b/app/javascript/mastodon/features/audio/index.js
index 1ab1c3117..5b8172694 100644
--- a/app/javascript/mastodon/features/audio/index.js
+++ b/app/javascript/mastodon/features/audio/index.js
@@ -115,6 +115,10 @@ class Audio extends React.PureComponent {
   }
 
   togglePlay = () => {
+    if (!this.audioContext) {
+      this._initAudioContext();
+    }
+
     if (this.state.paused) {
       this.setState({ paused: false }, () => this.audio.play());
     } else {
@@ -133,10 +137,6 @@ class Audio extends React.PureComponent {
   handlePlay = () => {
     this.setState({ paused: false });
 
-    if (this.canvas && !this.audioContext) {
-      this._initAudioContext();
-    }
-
     if (this.audioContext && this.audioContext.state === 'suspended') {
       this.audioContext.resume();
     }
@@ -269,8 +269,9 @@ class Audio extends React.PureComponent {
   }
 
   _initAudioContext () {
-    const context  = new AudioContext();
-    const source   = context.createMediaElementSource(this.audio);
+    const AudioContext = window.AudioContext || window.webkitAudioContext;
+    const context      = new AudioContext();
+    const source       = context.createMediaElementSource(this.audio);
 
     this.visualizer.setAudioContext(context, source);
     source.connect(context.destination);
diff --git a/app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.js b/app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.js
index 360a7af6a..e8a36a923 100644
--- a/app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.js
+++ b/app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.js
@@ -315,7 +315,7 @@ class EmojiPickerDropdown extends React.PureComponent {
 
         this.setState({ loading: false });
       }).catch(() => {
-        this.setState({ loading: false });
+        this.setState({ loading: false, active: false });
       });
     }
 
diff --git a/app/javascript/mastodon/features/compose/containers/warning_container.js b/app/javascript/mastodon/features/compose/containers/warning_container.js
index 8200a319f..bf0660ea9 100644
--- a/app/javascript/mastodon/features/compose/containers/warning_container.js
+++ b/app/javascript/mastodon/features/compose/containers/warning_container.js
@@ -5,7 +5,30 @@ import PropTypes from 'prop-types';
 import { FormattedMessage } from 'react-intl';
 import { me } from '../../../initial_state';
 
-const APPROX_HASHTAG_RE = /(?:^|[^\/\)\w])#(\w*[a-zA-Z·]\w*)/i;
+const buildHashtagRE = () => {
+  try {
+    const HASHTAG_SEPARATORS = '_\\u00b7\\u200c';
+    const ALPHA = '\\p{L}\\p{M}';
+    const WORD = '\\p{L}\\p{M}\\p{N}\\p{Pc}';
+    return new RegExp(
+      '(?:^|[^\\/\\)\\w])#((' +
+      '[' + WORD + '_]' +
+      '[' + WORD + HASHTAG_SEPARATORS + ']*' +
+      '[' + ALPHA + HASHTAG_SEPARATORS + ']' +
+      '[' + WORD + HASHTAG_SEPARATORS +']*' +
+      '[' + WORD + '_]' +
+      ')|(' +
+      '[' + WORD + '_]*' +
+      '[' + ALPHA + ']' +
+      '[' + WORD + '_]*' +
+      '))', 'iu',
+    );
+  } catch {
+    return /(?:^|[^\/\)\w])#(\w*[a-zA-Z·]\w*)/i;
+  }
+};
+
+const APPROX_HASHTAG_RE = buildHashtagRE();
 
 const mapStateToProps = state => ({
   needsLockWarning: state.getIn(['compose', 'privacy']) === 'private' && !state.getIn(['accounts', me, 'locked']),
diff --git a/app/javascript/mastodon/stream.js b/app/javascript/mastodon/stream.js
index 0cb2b228f..640455b33 100644
--- a/app/javascript/mastodon/stream.js
+++ b/app/javascript/mastodon/stream.js
@@ -1,87 +1,236 @@
+// @ts-check
+
 import WebSocketClient from '@gamestdio/websocket';
 
-const randomIntUpTo = max => Math.floor(Math.random() * Math.floor(max));
+/**
+ * @type {WebSocketClient | undefined}
+ */
+let sharedConnection;
 
-const knownEventTypes = [
-  'update',
-  'delete',
-  'notification',
-  'conversation',
-  'filters_changed',
-];
+/**
+ * @typedef Subscription
+ * @property {string} channelName
+ * @property {Object.<string, string>} params
+ * @property {function(): void} onConnect
+ * @property {function(StreamEvent): void} onReceive
+ * @property {function(): void} onDisconnect
+ */
 
-export function connectStream(path, pollingRefresh = null, callbacks = () => ({ onConnect() {}, onDisconnect() {}, onReceive() {} })) {
-  return (dispatch, getState) => {
-    const streamingAPIBaseURL = getState().getIn(['meta', 'streaming_api_base_url']);
-    const accessToken = getState().getIn(['meta', 'access_token']);
-    const { onConnect, onDisconnect, onReceive } = callbacks(dispatch, getState);
+ /**
+  * @typedef StreamEvent
+  * @property {string} event
+  * @property {object} payload
+  */
 
-    let polling = null;
+/**
+ * @type {Array.<Subscription>}
+ */
+const subscriptions = [];
 
-    const setupPolling = () => {
-      pollingRefresh(dispatch, () => {
-        polling = setTimeout(() => setupPolling(), 20000 + randomIntUpTo(20000));
-      });
-    };
+/**
+ * @type {Object.<string, number>}
+ */
+const subscriptionCounters = {};
+
+/**
+ * @param {Subscription} subscription
+ */
+const addSubscription = subscription => {
+  subscriptions.push(subscription);
+};
+
+/**
+ * @param {Subscription} subscription
+ */
+const removeSubscription = subscription => {
+  const index = subscriptions.indexOf(subscription);
+
+  if (index !== -1) {
+    subscriptions.splice(index, 1);
+  }
+};
+
+/**
+ * @param {Subscription} subscription
+ */
+const subscribe = ({ channelName, params, onConnect }) => {
+  const key = channelNameWithInlineParams(channelName, params);
+
+  subscriptionCounters[key] = subscriptionCounters[key] || 0;
+
+  if (subscriptionCounters[key] === 0) {
+    sharedConnection.send(JSON.stringify({ type: 'subscribe', stream: channelName, ...params }));
+  }
+
+  subscriptionCounters[key] += 1;
+  onConnect();
+};
+
+/**
+ * @param {Subscription} subscription
+ */
+const unsubscribe = ({ channelName, params, onDisconnect }) => {
+  const key = channelNameWithInlineParams(channelName, params);
 
-    const clearPolling = () => {
-      if (polling) {
-        clearTimeout(polling);
-        polling = null;
+  subscriptionCounters[key] = subscriptionCounters[key] || 1;
+
+  if (subscriptionCounters[key] === 1 && sharedConnection.readyState === WebSocketClient.OPEN) {
+    sharedConnection.send(JSON.stringify({ type: 'unsubscribe', stream: channelName, ...params }));
+  }
+
+  subscriptionCounters[key] -= 1;
+  onDisconnect();
+};
+
+const sharedCallbacks = {
+  connected () {
+    subscriptions.forEach(subscription => subscribe(subscription));
+  },
+
+  received (data) {
+    const { stream } = data;
+
+    subscriptions.filter(({ channelName, params }) => {
+      const streamChannelName = stream[0];
+
+      if (stream.length === 1) {
+        return channelName === streamChannelName;
       }
-    };
 
-    const subscription = getStream(streamingAPIBaseURL, accessToken, path, {
-      connected () {
-        if (pollingRefresh) {
-          clearPolling();
-        }
+      const streamIdentifier = stream[1];
 
-        onConnect();
-      },
+      if (['hashtag', 'hashtag:local'].includes(channelName)) {
+        return channelName === streamChannelName && params.tag === streamIdentifier;
+      } else if (channelName === 'list') {
+        return channelName === streamChannelName && params.list === streamIdentifier;
+      }
 
-      disconnected () {
-        if (pollingRefresh) {
-          polling = setTimeout(() => setupPolling(), randomIntUpTo(40000));
-        }
+      return false;
+    }).forEach(subscription => {
+      subscription.onReceive(data);
+    });
+  },
 
-        onDisconnect();
+  disconnected () {
+    subscriptions.forEach(({ onDisconnect }) => onDisconnect());
+  },
+
+  reconnected () {
+    subscriptions.forEach(subscription => subscribe(subscription));
+  },
+};
+
+/**
+ * @param {string} channelName
+ * @param {Object.<string, string>} params
+ * @return {string}
+ */
+const channelNameWithInlineParams = (channelName, params) => {
+  if (Object.keys(params).length === 0) {
+    return channelName;
+  }
+
+  return `${channelName}&${Object.keys(params).map(key => `${key}=${params[key]}`).join('&')}`;
+};
+
+/**
+ * @param {string} channelName
+ * @param {Object.<string, string>} params
+ * @param {function(Function, Function): { onConnect: (function(): void), onReceive: (function(StreamEvent): void), onDisconnect: (function(): void) }} callbacks
+ * @return {function(): void}
+ */
+export const connectStream = (channelName, params, callbacks) => (dispatch, getState) => {
+  const streamingAPIBaseURL = getState().getIn(['meta', 'streaming_api_base_url']);
+  const accessToken = getState().getIn(['meta', 'access_token']);
+  const { onConnect, onReceive, onDisconnect } = callbacks(dispatch, getState);
+
+  // If we cannot use a websockets connection, we must fall back
+  // to using individual connections for each channel
+  if (!streamingAPIBaseURL.startsWith('ws')) {
+    const connection = createConnection(streamingAPIBaseURL, accessToken, channelNameWithInlineParams(channelName, params), {
+      connected () {
+        onConnect();
       },
 
       received (data) {
         onReceive(data);
       },
 
-      reconnected () {
-        if (pollingRefresh) {
-          clearPolling();
-          pollingRefresh(dispatch);
-        }
+      disconnected () {
+        onDisconnect();
+      },
 
+      reconnected () {
         onConnect();
       },
-
     });
 
-    const disconnect = () => {
-      if (subscription) {
-        subscription.close();
-      }
-
-      clearPolling();
+    return () => {
+      connection.close();
     };
+  }
+
+  const subscription = {
+    channelName,
+    params,
+    onConnect,
+    onReceive,
+    onDisconnect,
+  };
+
+  addSubscription(subscription);
+
+  // If a connection is open, we can execute the subscription right now. Otherwise,
+  // because we have already registered it, it will be executed on connect
+
+  if (!sharedConnection) {
+    sharedConnection = /** @type {WebSocketClient} */ (createConnection(streamingAPIBaseURL, accessToken, '', sharedCallbacks));
+  } else if (sharedConnection.readyState === WebSocketClient.OPEN) {
+    subscribe(subscription);
+  }
 
-    return disconnect;
+  return () => {
+    removeSubscription(subscription);
+    unsubscribe(subscription);
   };
-}
+};
+
+const KNOWN_EVENT_TYPES = [
+  'update',
+  'delete',
+  'notification',
+  'conversation',
+  'filters_changed',
+  'encrypted_message',
+  'announcement',
+  'announcement.delete',
+  'announcement.reaction',
+];
+
+/**
+ * @param {MessageEvent} e
+ * @param {function(StreamEvent): void} received
+ */
+const handleEventSourceMessage = (e, received) => {
+  received({
+    event: e.type,
+    payload: e.data,
+  });
+};
 
+/**
+ * @param {string} streamingAPIBaseURL
+ * @param {string} accessToken
+ * @param {string} channelName
+ * @param {{ connected: Function, received: function(StreamEvent): void, disconnected: Function, reconnected: Function }} callbacks
+ * @return {WebSocketClient | EventSource}
+ */
+const createConnection = (streamingAPIBaseURL, accessToken, channelName, { connected, received, disconnected, reconnected }) => {
+  const params = channelName.split('&');
 
-export default function getStream(streamingAPIBaseURL, accessToken, stream, { connected, received, disconnected, reconnected }) {
-  const params = stream.split('&');
-  stream = params.shift();
+  channelName = params.shift();
 
   if (streamingAPIBaseURL.startsWith('ws')) {
-    params.unshift(`stream=${stream}`);
     const ws = new WebSocketClient(`${streamingAPIBaseURL}/api/v1/streaming/?${params.join('&')}`, accessToken);
 
     ws.onopen      = connected;
@@ -92,11 +241,19 @@ export default function getStream(streamingAPIBaseURL, accessToken, stream, { co
     return ws;
   }
 
-  stream = stream.replace(/:/g, '/');
+  channelName = channelName.replace(/:/g, '/');
+
+  if (channelName.endsWith(':media')) {
+    channelName = channelName.replace('/media', '');
+    params.push('only_media=true');
+  }
+
   params.push(`access_token=${accessToken}`);
-  const es = new EventSource(`${streamingAPIBaseURL}/api/v1/streaming/${stream}?${params.join('&')}`);
+
+  const es = new EventSource(`${streamingAPIBaseURL}/api/v1/streaming/${channelName}?${params.join('&')}`);
 
   let firstConnect = true;
+
   es.onopen = () => {
     if (firstConnect) {
       firstConnect = false;
@@ -105,15 +262,12 @@ export default function getStream(streamingAPIBaseURL, accessToken, stream, { co
       reconnected();
     }
   };
-  for (let type of knownEventTypes) {
-    es.addEventListener(type, (e) => {
-      received({
-        event: e.type,
-        payload: e.data,
-      });
-    });
-  }
-  es.onerror = disconnected;
+
+  KNOWN_EVENT_TYPES.forEach(type => {
+    es.addEventListener(type, e => handleEventSourceMessage(/** @type {MessageEvent} */ (e), received));
+  });
+
+  es.onerror = /** @type {function(): void} */ (disconnected);
 
   return es;
 };
diff --git a/app/javascript/styles/mastodon/boost.scss b/app/javascript/styles/mastodon/boost.scss
index 3489428f8..4b6c9b82e 100644
--- a/app/javascript/styles/mastodon/boost.scss
+++ b/app/javascript/styles/mastodon/boost.scss
@@ -15,5 +15,8 @@ button.icon-button i.fa-retweet {
 }
 
 button.icon-button.disabled i.fa-retweet {
-  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' height='209' width='22'><path d='M 18.972656 1.2011719 C 18.829825 1.1881782 18.685932 1.2302188 18.572266 1.3300781 L 15.990234 3.5996094 C 15.58109 3.6070661 15.297269 3.609375 14.730469 3.609375 L 7.0996094 3.609375 L 9.4199219 6.4609375 L 9.4492188 6.5195312 L 12.664062 6.5195312 L 6.5761719 11.867188 C 6.5674697 11.818249 6.5507813 11.773891 6.5507812 11.720703 L 6.5507812 9.0195312 L 9.0507812 9.0195312 C 9.4207813 9.0495313 9.6792188 8.54 9.4492188 8.25 L 5.5 3.3496094 C 5.38 3.1796094 5.1607031 3.1003906 4.9707031 3.1503906 L 4.9707031 3.1601562 C 4.8707031 3.1901563 4.8 3.2598438 4.75 3.3398438 L 0.80078125 8.2402344 C 0.60078125 8.5402344 0.8292187 9.0190625 1.1992188 9.0390625 L 3.5996094 9.0390625 L 3.5996094 11.720703 C 3.5996094 13.045739 3.5690668 13.895038 3.6503906 14.4375 L 2.6152344 15.347656 C 2.3879011 15.547375 2.3754917 15.901081 2.5859375 16.140625 L 3.1464844 16.78125 C 3.3569308 17.020794 3.7101667 17.053234 3.9375 16.853516 L 19.892578 2.8359375 C 20.119911 2.6362188 20.134275 2.282513 19.923828 2.0429688 L 19.361328 1.4023438 C 19.256105 1.282572 19.115488 1.2141655 18.972656 1.2011719 z M 18.410156 6.7753906 L 15.419922 9.4042969 L 15.419922 9.9394531 L 14.810547 9.9394531 L 13.148438 11.400391 L 16.539062 15.640625 C 16.719062 15.890625 17.140313 15.890625 17.320312 15.640625 L 21.259766 10.740234 C 21.519766 10.460234 21.260625 9.9094531 20.890625 9.9394531 L 18.400391 9.9394531 L 18.400391 7.2402344 C 18.400391 7.0470074 18.407711 6.9489682 18.410156 6.7753906 z M 11.966797 12.439453 L 8.6679688 15.339844 L 14.919922 15.339844 L 12.619141 12.5 C 12.589141 12.48 12.590313 12.459453 12.570312 12.439453 L 11.966797 12.439453 z' fill='#{hex-color(darken($action-button-color, 13%))}' stroke-width='0'/></svg>");
+  &,
+  &:hover {
+    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' height='209' width='22'><path d='M 18.972656 1.2011719 C 18.829825 1.1881782 18.685932 1.2302188 18.572266 1.3300781 L 15.990234 3.5996094 C 15.58109 3.6070661 15.297269 3.609375 14.730469 3.609375 L 7.0996094 3.609375 L 9.4199219 6.4609375 L 9.4492188 6.5195312 L 12.664062 6.5195312 L 6.5761719 11.867188 C 6.5674697 11.818249 6.5507813 11.773891 6.5507812 11.720703 L 6.5507812 9.0195312 L 9.0507812 9.0195312 C 9.4207813 9.0495313 9.6792188 8.54 9.4492188 8.25 L 5.5 3.3496094 C 5.38 3.1796094 5.1607031 3.1003906 4.9707031 3.1503906 L 4.9707031 3.1601562 C 4.8707031 3.1901563 4.8 3.2598438 4.75 3.3398438 L 0.80078125 8.2402344 C 0.60078125 8.5402344 0.8292187 9.0190625 1.1992188 9.0390625 L 3.5996094 9.0390625 L 3.5996094 11.720703 C 3.5996094 13.045739 3.5690668 13.895038 3.6503906 14.4375 L 2.6152344 15.347656 C 2.3879011 15.547375 2.3754917 15.901081 2.5859375 16.140625 L 3.1464844 16.78125 C 3.3569308 17.020794 3.7101667 17.053234 3.9375 16.853516 L 19.892578 2.8359375 C 20.119911 2.6362188 20.134275 2.282513 19.923828 2.0429688 L 19.361328 1.4023438 C 19.256105 1.282572 19.115488 1.2141655 18.972656 1.2011719 z M 18.410156 6.7753906 L 15.419922 9.4042969 L 15.419922 9.9394531 L 14.810547 9.9394531 L 13.148438 11.400391 L 16.539062 15.640625 C 16.719062 15.890625 17.140313 15.890625 17.320312 15.640625 L 21.259766 10.740234 C 21.519766 10.460234 21.260625 9.9094531 20.890625 9.9394531 L 18.400391 9.9394531 L 18.400391 7.2402344 C 18.400391 7.0470074 18.407711 6.9489682 18.410156 6.7753906 z M 11.966797 12.439453 L 8.6679688 15.339844 L 14.919922 15.339844 L 12.619141 12.5 C 12.589141 12.48 12.590313 12.459453 12.570312 12.439453 L 11.966797 12.439453 z' fill='#{hex-color(darken($action-button-color, 13%))}' stroke-width='0'/></svg>");
+  }
 }