message: Fix ?via= args in SpecPermalinkConstructor.js
diff: @@ -73,18 +73,16 @@ export default class SpecPermalinkConstructor extends PermalinkConstructor {
  // Probably a group, no further parsing needed.
  return PermalinkParts.forGroup(entity);
  } else if (entity[0] === '#' || entity[0] === '!') {
  - if (parts.length === 1) {
  - return PermalinkParts.forRoom(entity, []);
  + if (parts.length === 1) { // room without event permalink
  + const [roomId, query=""] = entity.split("?");
  + const via = query.split(/&?via=/g).filter(p => !!p);
  + return PermalinkParts.forRoom(roomId, via);
  }
  // rejoin the rest because v3 events can have slashes (annoyingly)
  const eventIdAndQuery = parts.length > 1 ? parts.slice(1).join('/') : "";
  - const secondaryParts = eventIdAndQuery.split("?");
  -
  - const eventId = secondaryParts[0];
  - const query = secondaryParts.length > 1 ? secondaryParts[1] : "";
  -
  - const via = query.split("via=").filter(p => !!p);
  + const [eventId, query=""] = eventIdAndQuery.split("?");
  + const via = query.split(/&?via=/g).filter(p => !!p);
  return PermalinkParts.forEvent(entity, eventId, via);
  } else {
  