[master] d6a5687 Document do_esi

[Tollef Fog Heen]

commit d6a5687f01bd09d96a868820c11beaf0c518ee5d
Author: Tollef Fog Heen <tfheen at varnish-software.com>
Date:   Wed Aug 10 11:31:37 2011 +0200

    Document do_esi
    
    Put esi → do_esi in upgrade checklist, fix markup typo.
    
    Fixes #974

diff --git a/doc/sphinx/installation/upgrade.rst b/doc/sphinx/installation/upgrade.rst
index 5cb5ad7..1a31733 100644
--- a/doc/sphinx/installation/upgrade.rst
+++ b/doc/sphinx/installation/upgrade.rst
@@ -78,7 +78,7 @@ becomes
 ``req.hash`` is replaced with ``hash_data()``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-You no longer append to the hash with +=, so
+You no longer append to the hash with ``+=``, so
 
 	set req.hash += req.url;
 
@@ -86,6 +86,17 @@ becomes
 
 	hash_data(req.url);
 
+``esi`` is replaced with ``beresp.do_esi``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+You no longer enable ESI with ``esi``, so
+
+	esi;
+
+in ``vcl_fetch`` becomes
+
+	set beresp.do_esi = true;
+
 ``pass`` in ``vcl_fetch`` renamed to ``hit_for_pass``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~