Eliminate redundant network request for reply data for preview in 4chan X catalog.

src/General/Index.coffee

@@ -663,6 +663,7 @@ Index =
     Index.liveThreadDict    = {}
     Index.threadPosition    = {}
     Index.parsedThreads     = {}
+    Index.replyData         = {}
     for data, i in Index.liveThreadData
       Index.liveThreadDict[data.no] = data
       Index.threadPosition[data.no] = i
@@ -670,6 +671,9 @@ Index =
       obj.filterResults = results = Filter.test obj
       obj.isOnTop  = results.top
       obj.isHidden = results.hide or ThreadHiding.isHidden(obj.boardID, obj.threadID)
+      if data.last_replies
+        for reply in data.last_replies
+          Index.replyData["#{g.BOARD}.#{reply.no}"] = reply
     if Index.liveThreadData[0]
       Build.spoilerRange[g.BOARD.ID] = Index.liveThreadData[0].custom_spoiler
     g.BOARD.threads.forEach (thread) ->

src/classes/Fetcher.coffee

@@ -4,6 +4,16 @@ class Fetcher
       @insert post
       return
 
+    # 4chan X catalog data
+    if (post = Index.replyData?["#{@boardID}.#{@postID}"])
+      board  = g.boards[@boardID]
+      thread = g.threads["#{@boardID}.#{@threadID}"]
+      post = new Post Build.postFromObject(post, @boardID), thread, board
+      post.isFetchedQuote = true
+      Main.callbackNodes 'Post', [post]
+      @insert post
+      return
+
     @root.textContent = "Loading post No.#{@postID}..."
     if @threadID
       $.cache "//a.4cdn.org/#{@boardID}/thread/#{@threadID}.json", (e, isCached) =>