--- a/src/jdk.jpackage/share/classes/jdk/jpackage/internal/AbstractAppImageBuilder.java	Thu Jan 10 15:34:33 2019 -0500
+++ b/src/jdk.jpackage/share/classes/jdk/jpackage/internal/AbstractAppImageBuilder.java	Tue Jan 22 09:24:58 2019 -0500
@@ -204,7 +204,7 @@
                 CLASSPATH.fetchFrom(params).split("[ :;]")));
 
         // The main app is required to be a jar, modular or unnamed.
-        if (mainModule != null && 
+        if (mainModule != null &&
                 (mainJarType == ModFile.ModType.Unknown ||
                 mainJarType == ModFile.ModType.ModularJar)) {
             out.println("app.mainmodule=" + mainModule);