Be more certain in the comment

lib/gitlab/email/reply_parser.rb

@@ -18,8 +18,9 @@ module Gitlab
         # not using /\s+$/ here because that deletes empty lines
         body = body.gsub(/[ \t]$/, '')
 
-        # TODO [jneen]: do we want to allow empty-quoting? (replies only containing a blockquote)
-        # EmailReplyTrimmer allows this as a special case, so we detect it manually here.
+        # NOTE: We currently don't support empty quotes.
+        # EmailReplyTrimmer allows this as a special case,
+        # so we detect it manually here.
         return "" if body.lines.all? { |l| l.strip.empty? || l.start_with?('>') }
 
         body.force_encoding(encoding).encode("UTF-8")