Ensure that when a workspace is removed from the middle of the list, the

_NET_WM_DESKTOP props on windows on following workspaces are correctly set.

src/core/screen.c

@@ -1157,6 +1157,7 @@ meta_screen_remove_workspace (MetaScreen *screen, MetaWorkspace *workspace,
 {
   GList         *l;
   MetaWorkspace *neighbour = NULL;
+  GList         *next = NULL;
 
   l = screen->workspaces;
   while (l)
@@ -1165,6 +1166,9 @@ meta_screen_remove_workspace (MetaScreen *screen, MetaWorkspace *workspace,
 
       if (w == workspace)
         {
+          if (l->next)
+            next = l->next;
+
           if (l->prev)
             neighbour = l->prev->data;
           else if (l->next)
@@ -1191,6 +1195,16 @@ meta_screen_remove_workspace (MetaScreen *screen, MetaWorkspace *workspace,
 
   set_number_of_spaces_hint (screen, g_list_length (screen->workspaces));
 
+  l = next;
+  while (l)
+    {
+      MetaWorkspace *w = l->data;
+
+      meta_workspace_update_window_hints (w);
+
+      l = l->next;
+    }
+
   meta_screen_queue_workarea_recalc (screen);
 
   g_object_notify (G_OBJECT (screen), "n-workspaces");

src/core/workspace.c

@@ -498,6 +498,20 @@ meta_workspace_index (MetaWorkspace *workspace)
   return ret;
 }
 
+void
+meta_workspace_update_window_hints (MetaWorkspace *workspace)
+{
+  GList *l = workspace->windows;
+  while (l)
+    {
+      MetaWindow *win = l->data;
+
+      meta_window_set_current_workspace_hint (win);
+
+      l = l->next;
+    }
+}
+
 /* get windows contained on workspace, including workspace->windows
  * and also sticky windows.
  */

src/include/workspace.h

@@ -72,4 +72,7 @@ void meta_workspace_activate (MetaWorkspace *workspace, guint32 timestamp);
 void meta_workspace_activate_with_focus (MetaWorkspace *workspace,
                                          MetaWindow    *focus_this,
                                          guint32        timestamp);
+
+void meta_workspace_update_window_hints (MetaWorkspace *workspace);
+
 #endif