OpenLayers.Util.getArgs returns wrong result with fragment identifiers, null

values in params, etc. From fredj. With tests! (Hooray for fredj)
Closes #734.


git-svn-id: http://svn.openlayers.org/trunk/openlayers@3284 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Util.js

@@ -609,16 +609,27 @@ OpenLayers.Util.getArgs = function(url) {
     if(url == null) {
         url = window.location.href;
     }
-    var query = (url.indexOf('?') != -1) ? url.substring(url.indexOf('?') + 1) 
-                                         : '';
+
+    var start = url.indexOf('?');
+    var stop = url.indexOf('#');
     
+    if (start != -1) {
+        if (stop != -1) {
+            var query = url.substring(start + 1, stop);
+        } else {
+            var query = url.substring(start + 1);
+        }
+    } else {
+        return {};
+    }
+        
     var args = new Object();
     pairs = query.split(/[&;]/);
     for(var i = 0; i < pairs.length; ++i) {
         keyValue = pairs[i].split(/=/);
         if(keyValue.length == 2) {
             args[decodeURIComponent(keyValue[0])] =
-                decodeURIComponent(keyValue[1]);
+                decodeURIComponent(keyValue[1]) || '';
         }
     }
     return args;