Proof-of-concept: Link version to corresponding announcement

options.js

Index: options.js
===================================================================
--- a/options.js
+++ b/options.js
@@ -646,15 +646,67 @@
     ext.backgroundPage.sendMessage(
     {
       type: "app.get",
-      what: "addonVersion"
+      what: "info"
     },
-    function(addonVersion)
+    function(info)
     {
-      E("abp-version").textContent = addonVersion;
-    });
-    getDocLink("releases", function(link)
-    {
-      E("link-version").setAttribute("href", link);
+      E("abp-version").textContent = info.addonVersion;
+
+      // Don't link version for development builds 
+      if (info.addonVersion.split(".").length > 3)
+        return;
+
+      E("version").setAttribute("href", "#");
+      E("version").addEventListener("click", function(event)
+      {
+        event.preventDefault();
+
+        fetch("https://adblockplus.org/atom/?section=releases&limit=100").then(function(response)
+        {
+          return repsonse.ok ? response.text() : "";
+        }).then(
+          function(text)
+          {
+            var doc = new DOMParser().parseFromString(text, "application/xml");
+            var entries = doc.getElementsByTagName("entry");
+            for (var i = 0; i < entries.length; i++)
+            {
+              var entry = entries[i];
+              var title = entry.getElementsByTagName("title")[0];
+              if (!title)
+                continue;
+
+              var lowerCaseTitleText = title.textContent.toLowerCase();
+              if (lowerCaseTitleText.split(/\W+/).indexOf(info.application) == -1)
+                continue;
+              if (lowerCaseTitleText.split(/\s+/).indexOf(info.addonVersion) == -1)
+                continue;
+
+              var links = entry.getElementsByTagName("link");
+              for (var j = 0; j < links.length; j++)
+              {
+                var link = links[j];
+                var href = link.getAttribute("href");
+
+                if (link.getAttribute("rel") == "alternate" && href)
+                  return href;
+              }
+            }
+          },
+          function()
+          {
+            return null;
+          }
+        ).then(function(url)
+        {
+          if (url)
+            document.location.href = url;
+          else
+            getDocLink("releases", function(link)
+            {
+              document.location.href = link;
+            });
+        });
     });
 
     getDocLink("contribute", function(link)