diff --git a/app/lib/quote_formatter.rb b/app/lib/quote_formatter.rb
index 69c5b7456..d51f938b5 100644
--- a/app/lib/quote_formatter.rb
+++ b/app/lib/quote_formatter.rb
@@ -16,4 +16,17 @@ class QuoteFormatter
     link = encode_and_link_urls(url)
     html.sub(/(<[^>]+>)\z/, "<span class=\"quote-inline\"><br/>QT: #{link}</span>\\1")
   end
+
+  def format_in_quote(status, **options)
+    # format_in_quoteを定義、引数statusと**options
+    html = format(status)
+    return '' if html.empty?
+    doc = Nokogiri::HTML.parse(html, nil, 'utf-8')
+    html = doc.css('body')[0].inner_html
+    html.sub!(/^<p>(.+)<\/p>$/, '\1')
+    html = Sanitize.clean(html).delete("\n").truncate(150)
+    html = encode_custom_emojis(html, status.emojis) if options[:custom_emojify]
+    html.html_safe
+  end
+  
 end