2 files changed, 53 insertions, 0 deletions
diff --git a/src/XF86Config-parser/Merge.c b/src/XF86Config-parser/Merge.c
index e302e5e..67ba8e2 100644
--- a/src/XF86Config-parser/Merge.c
+++ b/src/XF86Config-parser/Merge.c
@@ -713,6 +713,38 @@ static int xconfigMergeLayout(XConfigPtr dstConfig, XConfigPtr srcConfig)
 
 
 /*
+ * xconfigMergeExtensions() - Updates information in the destination's extension
+ * section with that of the source's extension section. 
+ * Currently considering composite extension only.
+ *
+ */
+static int  xconfigMergeExtensions(XConfigPtr dstConfig, XConfigPtr srcConfig)
+{
+   if (srcConfig->extensions) {
+        XConfigOptionPtr option;
+
+        /* Extension section was not found, create a new one */
+        if (!dstConfig->extensions) {
+            dstConfig->extensions =
+                (XConfigExtensionsPtr) calloc(1, sizeof(XConfigExtensionsRec));
+            if (!dstConfig->extensions) return 0;
+        }
+
+        option = srcConfig->extensions->options;
+        while (option) {
+            xconfigMergeOption(&(dstConfig->extensions->options),
+                               &(srcConfig->extensions->options),
+                               xconfigOptionName(option),
+                               &(dstConfig->extensions->comment));
+            option = option->next;
+        }
+    }
+
+    return 1;
+
+} /* xconfigMergeExtensions() */
+
+/*
  * xconfigMergeConfigs() - Merges the source X configuration with the
  * destination X configuration.
  *
@@ -763,6 +795,13 @@ int xconfigMergeConfigs(XConfigPtr dstConfig, XConfigPtr srcConfig)
         return 0;
     }
 
+    /* Merge the extensions */
+    
+    if (!xconfigMergeExtensions(dstConfig, srcConfig)) {
+        return 0;
+    }
+
+
     return 1;
 
 } /* xconfigMergeConfigs() */
diff --git a/src/gtk+-2.x/ctkdisplayconfig.c b/src/gtk+-2.x/ctkdisplayconfig.c
index c848bad..a525326 100644
--- a/src/gtk+-2.x/ctkdisplayconfig.c
+++ b/src/gtk+-2.x/ctkdisplayconfig.c
@@ -7187,6 +7187,20 @@ static int generateXConfig(CtkDisplayConfig *ctk_object, XConfigPtr *pConfig)
         goto fail;
     }
 
+    if (go.supports_extension_section && layout->xinerama_enabled) {
+
+        if (!config->extensions) {
+            config->extensions = calloc(1, sizeof(XConfigExtensionsRec));
+        }
+
+        /* remove any existing composite extension option and then add the option*/
+        xconfigRemoveNamedOption(&(config->extensions->options), "Composite",
+                                 NULL);
+        xconfigAddNewOption(&config->extensions->options, "Composite", "Disable");
+
+    }
+
+
 
     *pConfig = config;