dont create dmails when mentioned in a quote block #2466

app/logical/mentionable.rb

@@ -16,10 +16,32 @@ module Mentionable
     end
   end
 
+  def strip_quote_blocks(str)
+    stripped = ""
+    str.gsub!(/\s*\[quote\](?!\])\s*/m, "\n\n[quote]\n\n")
+    str.gsub!(/\s*\[\/quote\]\s*/m, "\n\n[/quote]\n\n")
+    str.gsub!(/(?:\r?\n){3,}/, "\n\n")
+    str.strip!
+    nest = 0
+    str.split(/\n{2}/).each do |block|
+      if block == "[quote]"
+        nest += 1
+
+      elsif block == "[/quote]"
+        nest -= 1
+
+      elsif nest == 0
+        stripped << "#{block}\n"
+      end
+    end
+
+    stripped
+  end
+
   def queue_mention_messages
     title = self.class.mentionable_option(:title)
     from_id = read_attribute(self.class.mentionable_option(:user_field))
-    text = read_attribute(self.class.mentionable_option(:message_field))
+    text = strip_quote_blocks(read_attribute(self.class.mentionable_option(:message_field)))
 
     text.scan(DText::MENTION_REGEXP).each do |mention|
       mention.gsub!(/(?:^\s*@)|(?:[:;,.!?\)\]<>]$)/, "")