mark frozen items in dump weights action

platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupImpl.java

@@ -458,6 +458,10 @@ public class LookupImpl extends LightweightHint implements Lookup, Disposable {
     }
   }
 
+  public boolean isFrozen(@NotNull LookupElement element) {
+    return myFrozenItems.contains(element);
+  }
+
   private boolean addExactPrefixItems(DefaultListModel model, Set<LookupElement> firstItems, final Collection<LookupElement> elements) {
     List<LookupElement> sorted = new SortedList<LookupElement>(new Comparator<LookupElement>() {
       public int compare(LookupElement o1, LookupElement o2) {

platform/lang-impl/src/com/intellij/internal/DumpLookupElementWeights.java

@@ -82,7 +82,10 @@ public class DumpLookupElementWeights extends AnAction implements DumbAware {
       for (String s : toExclude) {
         weight = StringUtil.replace(weight, s, "", false);
       }
-      final String s = item.getLookupString() + weight;
+      while (weight.contains(", ,")) {
+        weight = weight.replaceAll(", ,", ",");
+      }
+      final String s = item.getLookupString() + (lookup.isFrozen(item) ? "\t_first_\t" : "\t") + weight;
       System.out.println(s);
       LOG.info(s);
       if (i == count - 1) {