Fix custom emojis not detected when used in content warning (#5049)

app/lib/formatter.rb

@@ -63,6 +63,12 @@ class Formatter
     Sanitize.fragment(html, config)
   end
 
+  def format_spoiler(status)
+    html = encode(status.spoiler_text)
+    html = encode_custom_emojis(html, status.emojis)
+    html.html_safe # rubocop:disable Rails/OutputSafety
+  end
+
   private
 
   def encode(html)

app/models/status.rb

@@ -132,7 +132,7 @@ class Status < ApplicationRecord
   end
 
   def emojis
-    CustomEmoji.from_text(text, account.domain)
+    CustomEmoji.from_text([spoiler_text, text].join(' '), account.domain)
   end
 
   after_create :store_uri, if: :local?

app/views/stream_entries/_detailed_status.html.haml

@@ -15,7 +15,7 @@
   .status__content.p-name.emojify<
     - if status.spoiler_text?
       %p{ style: 'margin-bottom: 0' }<
-        %span.p-summary> #{status.spoiler_text}&nbsp;
+        %span.p-summary> #{Formatter.instance.format_spoiler(status)}&nbsp;
         %a.status__content__spoiler-link{ href: '#' }= t('statuses.show_more')
     .e-content{ lang: status.language, style: "display: #{status.spoiler_text? ? 'none' : 'block'}; direction: #{rtl_status?(status) ? 'rtl' : 'ltr'}" }= Formatter.instance.format(status, custom_emojify: true)
 

app/views/stream_entries/_simple_status.html.haml

@@ -16,7 +16,7 @@
   .status__content.p-name.emojify<
     - if status.spoiler_text?
       %p{ style: 'margin-bottom: 0' }<
-        %span.p-summary> #{status.spoiler_text}&nbsp;
+        %span.p-summary> #{Formatter.instance.format_spoiler(status)}&nbsp;
         %a.status__content__spoiler-link{ href: '#' }= t('statuses.show_more')
     .e-content{ lang: status.language, style: "display: #{status.spoiler_text? ? 'none' : 'block'}; direction: #{rtl_status?(status) ? 'rtl' : 'ltr'}" }= Formatter.instance.format(status, custom_emojify: true)