FIX: filters ignore media descriptions (#13837)

* FIX: filters ignore media descriptions

* remove parentheses to make codeclimate happy

* combine the text and run the regular expression only once.

https://github.com/tootsuite/mastodon/pull/13837#discussion_r431752581

* Fix use of “filter” instead of “compact”, fix coding style issues

Co-authored-by: Thibaut Girka <thib@sitedethib.com>

app/javascript/mastodon/actions/importer/normalizer.js

@@ -12,7 +12,7 @@ const makeEmojiMap = record => record.emojis.reduce((obj, emoji) => {
 
 export function searchTextFromRawStatus (status) {
   const spoilerText   = status.spoiler_text || '';
-  const searchContent = ([spoilerText, status.content].concat((status.poll && status.poll.options) ? status.poll.options.map(option => option.title) : [])).join('\n\n').replace(/<br\s*\/?>/g, '\n').replace(/<\/p><p>/g, '\n\n');
+  const searchContent = ([spoilerText, status.content].concat((status.poll && status.poll.options) ? status.poll.options.map(option => option.title) : [])).concat(status.media_attachments.map(att => att.description)).join('\n\n').replace(/<br\s*\/?>/g, '\n').replace(/<\/p><p>/g, '\n\n');
   return domParser.parseFromString(searchContent, 'text/html').documentElement.textContent;
 }
 

app/lib/feed_manager.rb

@@ -246,9 +246,14 @@ class FeedManager
     combined_regex = active_filters.reduce { |memo, obj| Regexp.union(memo, obj) }
     status         = status.reblog if status.reblog?
 
-    !combined_regex.match(Formatter.instance.plaintext(status)).nil? ||
+    combined_text = [
-      (status.spoiler_text.present? && !combined_regex.match(status.spoiler_text).nil?) ||
+      Formatter.instance.plaintext(status),
-      (status.preloadable_poll && !combined_regex.match(status.preloadable_poll.options.join("\n\n")).nil?)
+      status.spoiler_text,
+      status.preloadable_poll ? status.preloadable_poll.options.join("\n\n") : nil,
+      status.media_attachments.map(&:description).join("\n\n"),
+    ].compact.join("\n\n")
+
+    !combined_regex.match(combined_text).nil?
   end
 
   # Adds a status to an account's feed, returning true if a status was