# This patch file was generated by NetBeans IDE
# Following Index: paths are relative to: C:\Users\fm\Documents\NetBeansProjects\NetBeans\main-silver
# This patch can be applied using context Tools: Patch action on respective folder.
# It uses platform neutral UTF-8 encoding and \n newlines.
# Above lines and this line are ignored by the patching process.
Index: o.n.bootstrap/apichanges.xml
--- o.n.bootstrap/apichanges.xml
+++ o.n.bootstrap/apichanges.xml
@@ -85,6 +85,22 @@
         </description>
         <issue number="201731"/>
     </change>
+     <change id="netbeans.ignore.dupmodule">
+        <api name="launcher"/>
+        <summary>Property to replace DuplicateException with warning log only</summary>
+        <version major="2" minor="63"/>
+        <date day="24" month="7" year="2013"/>
+        <author login="mantlik"/>
+        <compatibility addition="yes" binary="compatible" semantic="compatible" />
+        <description>
+        <p>
+            See <a href="@TOP@architecture-summary.html#systemproperty-netbeans.ignore.dupmodule">
+                netbeans.ignore.dupmodule
+            </a> for details.
+        </p>
+        </description>
+        <issue number="232229"/>
+    </change>
   </changes>
 
   <!-- Now the surrounding HTML text and document structure: -->
Index: o.n.bootstrap/arch.xml
--- o.n.bootstrap/arch.xml
+++ o.n.bootstrap/arch.xml
@@ -617,6 +617,15 @@
                     waits to synchronize with system clipboard. Defaults to 1000ms.
                 </api>
             </li>
+            <li>
+                <api type="export" group="systemproperty" name="netbeans.ignore.dupmodule" category="devel">
+                    By default ModuleManager throws <code>DuplicateException</code> when an attempt is made
+                    to load an already loaded module.
+                    One can change this behavior by providing <code>-Dnetbeans.ignore.dupmodule=true</code>
+                    since version 2.63. When <code>-Dnetbeans.ignore.dupmodule=true</code> is provided,
+                    attempt of duplicate loading is logged instead of throwing <code>DuplicateException</code>.
+                </api>
+            </li>
         </ul>
         <p>
             There are also some options passed to the launcher (interpreted
Index: o.n.bootstrap/manifest.mf
--- o.n.bootstrap/manifest.mf
+++ o.n.bootstrap/manifest.mf
@@ -1,6 +1,6 @@
 Manifest-Version: 1.0
 OpenIDE-Module: org.netbeans.bootstrap/1
-OpenIDE-Module-Specification-Version: 2.62
+OpenIDE-Module-Specification-Version: 2.63
 OpenIDE-Module-Localizing-Bundle: org/netbeans/Bundle.properties
 OpenIDE-Module-Recommends: org.netbeans.NetigsoFramework
 
Index: o.n.bootstrap/src/org/netbeans/ModuleManager.java
--- o.n.bootstrap/src/org/netbeans/ModuleManager.java
+++ o.n.bootstrap/src/org/netbeans/ModuleManager.java
@@ -892,8 +892,14 @@
     private void subCreate(Module m) throws DuplicateException {
         Module old = get(m.getCodeNameBase());
         if (old != null) {
+            if (System.getProperty("netbeans.ignore.dupmodule", "false").equalsIgnoreCase("false")) {
             throw new DuplicateException(old, m);
+            } else {
+                // ignore duplicate module, log and gracefuly exit
+                Util.err.warning("Duplicate loading ignored: " + old + " and " + m);
+                return;
         }
+        }
         modules.add(m);
         modulesByName.put(m.getCodeNameBase(), m);
         providersOf.possibleProviderAdded(m);