Parse Error inside QuasiQuotes

[ericnething]

I am using haskell-mode version 20150920.858 from melpa. I updated a few days ago. The code below gives me the error Illegal Token: =

messageField :: Monad m => RenderMessage (HandlerSite m) FormMessage => Field m Text
messageField = Field
  { fieldParse = parseHelper $ Right
  , fieldView = \theId name attrs val isReq -> [whamlet|
$newline never
<input id="#{theId}" name="#{name}" maxlength="140" type="text" value="#{either id id val}" :isReq:required  *{attrs}>
  |]
  , fieldEnctype = UrlEncoded
  }

It is the <input> line that is causing the problem. Strangely, if I remove the quotations from value="#{either id id val}", the error goes away. Nothing inside the QuasiQuotes should be parsed.

[ivan-m]

This is a duplicate of #894