Read moreはjsだけで実装されてるんだねえ
$ git show 5d5d1b5
:
--- a/app/javascript/mastodon/components/status_content.js
+++ b/app/javascript/mastodon/components/status_content.js
@@ -6,7 +6,7 @@ import { FormattedMessage } from 'react-intl';
import Permalink from './permalink';
import classnames from 'classnames';
-const MAX_HEIGHT = 322; // 20px * 16 (+ 2px padding at the top)
+const MAX_HEIGHT = 642; // 20px * 32 (+ 2px padding at the top)
: