ExpandThread tweaking.

Also fix code trying to $.off `ExpandThread.cb.toggle`.

src/Miscellaneous/ExpandThread.coffee

@@ -6,7 +6,7 @@ ExpandThread =
       name: 'Thread Expansion'
       cb:   @node
   node: ->
-    return unless span = $ '.summary', @OP.nodes.root.parentNode
+    return unless span = $.x 'following-sibling::span[contains(@class,"summary")][1]', @OP.nodes.root
     a = $.el 'a',
       textContent: "+ #{span.textContent}"
       className: 'summary'
@@ -15,8 +15,7 @@ ExpandThread =
     $.replace span, a
 
   cbToggle: ->
-    op = Get.postFromRoot @previousElementSibling
-    ExpandThread.toggle op.thread
+    ExpandThread.toggle Get.threadFromRoot @parentNode
 
   toggle: (thread) ->
     threadRoot = thread.OP.nodes.root.parentNode
@@ -24,7 +23,6 @@ ExpandThread =
 
     switch thread.isExpanded
       when false, undefined
-        thread.isExpanded = 'loading'
         for post in $$ '.thread > .postContainer', threadRoot
           ExpandComment.expand Get.postFromRoot post
         unless a
@@ -42,60 +40,58 @@ ExpandThread =
 
       when true
         thread.isExpanded = false
-        if a
-          a.textContent = a.textContent.replace '-', '+'
-          #goddamit moot
-          num = if thread.isSticky
-            1
-          else switch g.BOARD.ID
-            # XXX boards config
-            when 'b', 'vg', 'q' then 3
-            when 't' then 1
-            else 5
-          replies = $$('.thread > .replyContainer', threadRoot)[...-num]
-          for reply in replies
-            if Conf['Quote Inlining']
-              # rm clones
-              inlined.click() while inlined = $ '.inlined', reply
-            $.rm reply
-        for post in $$ '.thread > .postContainer', threadRoot
+        #goddamit moot
+        num = if thread.isSticky
+          1
+        else switch g.BOARD.ID
+          # XXX boards config
+          when 'b', 'vg', 'q' then 3
+          when 't' then 1
+          else 5
+        posts = $$ ".thread > .replyContainer", threadRoot
+        for post in [thread.OP.nodes.root].concat posts[-num..]
           ExpandComment.contract Get.postFromRoot post
+        return unless a
+        a.textContent = a.textContent.replace '-', '+'
+        for reply in posts[...-num]
+          if Conf['Quote Inlining']
+            # rm clones
+            inlined.click() while inlined = $ '.inlined', reply
+          $.rm reply
     return
 
   parse: (req, thread, a) ->
     return if a.textContent[0] is '+'
-    {status} = req
-    if status not in [200, 304]
-      a.textContent = "Error #{req.statusText} (#{status})"
-      $.off a, 'click', ExpandThread.cb.toggle
+    if req.status not in [200, 304]
+      a.textContent = "Error #{req.statusText} (#{req.status})"
+      $.off a, 'click', ExpandThread.cbToggle
       return
 
     thread.isExpanded = true
     a.textContent = a.textContent.replace '× Loading...', '-'
 
-    posts = JSON.parse(req.response).posts
-    if spoilerRange = posts[0].custom_spoiler
-      Build.spoilerRange[g.BOARD] = spoilerRange
+    {posts} = JSON.parse req.response
+    if spoilerRange = posts.shift().custom_spoiler
+      Build.spoilerRange[thread.board] = spoilerRange
 
-    replies  = posts[1..]
-    posts    = []
-    nodes    = []
-    for reply in replies
-      if post = thread.posts[reply.no]
-        nodes.push post.nodes.root
+    postsObj  = []
+    postsRoot = []
+    for post in posts
+      if post = thread.posts[post.no]
+        postsRoot.push post.nodes.root
         continue
-      node = Build.postFromObject reply, thread.board.ID
-      post = new Post node, thread, thread.board
-      link = $ 'a[title="Highlight this post"]', node
+      root = Build.postFromObject post, thread.board.ID
+      post = new Post root, thread, thread.board
+      link = $ 'a[title="Highlight this post"]', root
       link.href = "res/#{thread}#p#{post}"
       link.nextSibling.href = "res/#{thread}#q#{post}"
-      posts.push post
-      nodes.push node
-    Main.callbackNodes Post, posts
-    $.after a, nodes
+      postsObj.push  post
+      postsRoot.push root
+    Main.callbackNodes Post, postsObj
+    $.after a, postsRoot
 
     # Enable 4chan features.
     if Conf['Enable 4chan\'s Extension']
-      $.globalEval "Parser.parseThread(#{thread.ID}, 1, #{nodes.length})"
+      $.globalEval "Parser.parseThread(#{thread.ID}, 1, #{postsRoot.length})"
     else
-      Fourchan.parseThread thread.ID, 1, nodes.length
+      Fourchan.parseThread thread.ID, 1, postsRoot.length