Make use of a few CoffeeScript filters.

lib/$.coffee

@@ -24,8 +24,7 @@ $.formData = (form) ->
   if form instanceof HTMLFormElement
     return new FormData form
   fd = new FormData()
-  for key, val of form
+  for key, val of form when val
-    continue unless val
     # XXX GM bug
     # if val instanceof Blob
     if val.size and val.name

src/General/Header.coffee

@@ -199,8 +199,7 @@ Header =
       '#boardNavDesktopFoot a[href*="boards.4chan.org"]'
     ].join ', '
     path = if useCatalog then 'catalog' else ''
-    for a in as
+    for a in as when not a.dataset.only
-      continue if a.dataset.only
       a.pathname = "/#{a.pathname.split('/')[1]}/#{path}"
     return
   toggleCatalogLinks: ->

src/General/Post.coffee

@@ -167,8 +167,7 @@ class Post
     return if file
     # Get quotelinks/backlinks to this post
     # and paint them (Dead).
-    for quotelink in Get.allQuotelinksLinkingTo @
+    for quotelink in Get.allQuotelinksLinkingTo @ when not $.hasClass quotelink, 'deadlink'
-      continue if $.hasClass quotelink, 'deadlink'
       $.add quotelink, $.tn '\u00A0(Dead)'
       $.addClass quotelink, 'deadlink'
     return

src/General/Settings.coffee

@@ -277,8 +277,7 @@ Settings =
             '%board'
           else
             c
-      for key, val of Config.hotkeys
+      for key, val of Config.hotkeys when key of data.Conf
-        continue unless key of data.Conf
         data.Conf[key] = data.Conf[key].replace(/ctrl|alt|meta/g, (s) -> "#{s[0].toUpperCase()}#{s[1..]}").replace /(^|.+\+)[A-Z]$/g, (s) ->
           "Shift+#{s[0...-1]}#{s[-1..].toLowerCase()}"
       data.Conf.WatchedThreads = data.WatchedThreads

src/Posting/QR.coffee

@@ -176,9 +176,7 @@ QR =
         types[type].push val
     loadPersonas: (type, arr) ->
       list = $ "#list-#{type}", QR.nodes.el
-      for val in arr
+      for val in arr when val
-        # XXX Firefox displays empty <option>s in the completion list.
-        continue unless val
         $.add list, $.el 'option',
           textContent: val
       return