by default, try to preserve the order

core/src/main/resources/lib/form/hetero-list.jelly

@@ -58,6 +58,10 @@ THE SOFTWARE.
     <st:attribute name="menuAlign">
       Menu alignment against the button. Defaults to tl-bl
     </st:attribute>
+    <st:attribute name="honorOrder">
+      If true, insert new addition by default to their 'desired' location, which
+      is the order induced by the descriptors.
+    </st:attribute>
   </st:documentation>
   <d:taglib uri="local">
     <d:tag name="body">
@@ -96,7 +100,7 @@ THE SOFTWARE.
   </d:taglib>
 
   <j:set var="targetType" value="${attrs.targetType?:it.class}"/>
-  <div class="hetero-list-container ${hasHeader?'with-drag-drop':''} ${attrs.oneEach?'one-each':''}">
+  <div class="hetero-list-container ${hasHeader?'with-drag-drop':''} ${attrs.oneEach?'one-each':''} ${attrs.honorOrder?'honor-order':''}">
     <!-- display existing items -->
     <j:forEach var="i" items="${attrs.items}">
       <j:set var="descriptor" value="${i.descriptor}" />

core/src/main/resources/lib/hudson/project/config-publishers.jelly

@@ -34,6 +34,7 @@ THE SOFTWARE.
                      items="${it.publishersList}"
                      oneEach="true"
                      menuAlign="bl-tl"
+                     honorOrder="true"
                      addCaption="${%Add post-build action}"/>
     </f:block>
   </f:section>

war/src/main/webapp/scripts/hudson-behavior.js

@@ -556,7 +556,53 @@ var jenkinsRules = {
             var scroll = document.body.scrollTop;
 
             renderOnDemand(findElementsBySelector(nc,"TR.config-page")[0],function() {
-                insertionPoint.insert({after:nc});
+                function findInsertionPoint() {
+                    // given the element to be inserted 'prospect',
+                    // and the array of existing items 'current',
+                    // and preferred ordering function, return the position in the array
+                    // the prospect should be inserted.
+                    // (for example 0 if it should be the first item)
+                    function findBestPosition(prospect,current,order) {
+                        function desirability(pos) {
+                            var count=0;
+                            for (var i=0; i<current.length; i++) {
+                                if ((i<pos) == (order(current[i])<=order(prospect)))
+                                    count++;
+                            }
+                            return count;
+                        }
+
+                        var bestScore = -1;
+                        var bestPos = 0;
+                        for (var i=0; i<=current.length; i++) {
+                            var d = desirability(i);
+                            if (bestScore<=d) {// prefer to insert them toward the end
+                                bestScore = d;
+                                bestPos = i;
+                            }
+                        }
+                        return bestPos;
+                    }
+
+                    var current = e.childElements().findAll(function(e) {return e.match("DIV.repeated-chunk")});
+
+                    function o(did) {
+                        if (Object.isElement(did))
+                            did = did.getAttribute("descriptorId");
+                        for (var i=0; i<templates.length; i++)
+                            if (templates[i].descriptorId==did)
+                                return i;
+                        return 0; // can't happen
+                    }
+
+                    var bestPos = findBestPosition(t.descriptorId, current, o);
+                    if (bestPos<current.length)
+                        return current[bestPos];
+                    else
+                        return insertionPoint;
+                }
+                (e.hasClassName("honor-order") ? findInsertionPoint() : insertionPoint).insert({before:nc});
+
                 if(withDragDrop)    prepareDD(nc);
 
                 new YAHOO.util.Anim(nc, {
@@ -589,10 +635,7 @@ var jenkinsRules = {
             menuButton.getMenu().showEvent.subscribe(function() {
                 var items = menuButton.getMenu().getItems();
                 for(i=0; i<items.length; i++) {
-                    // TEST
-                    if (has(templates[i].descriptorId)) {
-                        items[i].cfg.setProperty("disabled",true);
-                    }
+                    items[i].cfg.setProperty("disabled",has(templates[i].descriptorId));
                 }
             });
         }