Index: externals/Harpy/Tools/sign.eagle
==================================================================
--- externals/Harpy/Tools/sign.eagle
+++ externals/Harpy/Tools/sign.eagle
@@ -28,16 +28,28 @@
   #
   exit 1
 }
 
 proc isScriptFile { fileName } {
-  return [expr {
-    [file extension $fileName] eq ".tcl" || \
-    [file extension $fileName] eq ".tk" || \
-    [file extension $fileName] eq ".test" || \
-    [file extension $fileName] eq ".eagle"
-  }]
+  switch -exact -- [file extension $fileName] {
+    .tcl -
+    .tk -
+    .test -
+    .eagle {
+      return true
+    }
+    .xml {
+      set uri [object invoke Eagle._Constants.Xml ScriptNamespaceUri]
+      set data [readFile $fileName]
+
+      if {[string first $uri $data] != -1} then {
+        return true
+      }
+    }
+  }
+
+  return false
 }
 
 proc isKeyRingFile { fileName } {
   if {[file extension $fileName] ne ".eagle"} then {
     return false

Index: externals/Harpy/Tools/sign.eagle.harpy
==================================================================
--- externals/Harpy/Tools/sign.eagle.harpy
+++ externals/Harpy/Tools/sign.eagle.harpy
@@ -19,50 +19,50 @@
 <Certificate xmlns="https://eagle.to/2011/harpy"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <Protocol>None</Protocol>
   <Vendor>Mistachkin Systems</Vendor>
-  <Id>aeb64257-f1ab-4ff0-8c27-534ea397c772</Id>
+  <Id>cfe88817-22c8-4629-a084-9e7cbbff6108</Id>
   <HashAlgorithm>SHA512</HashAlgorithm>
   <EntityType>Script</EntityType>
-  <TimeStamp>2020-10-18T03:10:28.0680987Z</TimeStamp>
+  <TimeStamp>2020-11-20T03:07:10.8573165Z</TimeStamp>
   <Duration>-1.00:00:00</Duration>
   <Key>0x9559f6017247e3e2</Key>
   <Signature>
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   </Signature>
 </Certificate>