title: enabling rails page caching causes http header charset to disappears
body: <p>I need charset to be utf-8, which seem to be the case by default. Recently I enabled page caching for a few static pages:</p>
  
  <pre><code>caches_page :about
  </code></pre>
  
  <p>The caching works fine, and I see the corresponding about.html and contact.html pages generated in my /public folder, except when the page renders, it's no longer in utf-8.</p>
  
  <p>After googling for a bit I tried looking at the http headers with wget, before and after caching:</p>
  
  <p>first time:</p>
  
  <pre><code>$wget --server-response http://localhost:3000/about
  
  HTTP request sent, awaiting response... 
   1 HTTP/1.1 200 OK
   2 X-Ua-Compatible: IE=Edge
   3 Etag: "f7b0b4dea015140f3b5ad90c3a392bef"
   4 Connection: Keep-Alive
   5 Content-Type: text/html; charset=utf-8
   6 Date: Sun, 12 Jun 2011 03:44:22 GMT
   7 Server: WEBrick/1.3.1 (Ruby/1.8.7/2009-06-12)
   8 X-Runtime: 0.235347
   9 Content-Length: 5520
  10 Cache-Control: max-age=0, private, must-revalidate
  </code></pre>
  
  <p>cached:</p>
  
  <pre><code>$wget --server-response http://localhost:3000/about
  
  Resolving localhost... 127.0.0.1
  Connecting to localhost[127.0.0.1]:3000... connected.
  HTTP request sent, awaiting response... 
   1 HTTP/1.1 200 OK
   2 Last-Modified: Sun, 12 Jun 2011 03:34:42 GMT
   3 Connection: Keep-Alive
   4 Content-Type: text/html
   5 Date: Sun, 12 Jun 2011 03:39:53 GMT
   6 Server: WEBrick/1.3.1 (Ruby/1.8.7/2009-06-12)
   7 Content-Length: 5783
  </code></pre>
  
  <p>as a result the page displays in ISO-8859-1 and I get a bunch of garbled text. Does anyone know how I can prevent this undesirable result? Thank you.</p>