jdk/src/java.base/share/classes/sun/launcher/LauncherHelper.java

@@ -79,10 +79,13 @@
 import java.util.Set;
 import java.util.TreeSet;
 import java.util.jar.Attributes;
 import java.util.jar.JarFile;
 import java.util.jar.Manifest;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
 import jdk.internal.misc.VM;
 
 
 public final class LauncherHelper {
 

@@ -903,11 +906,11 @@
     {
         initOutput(printToStderr);
 
         ModuleFinder finder = jdk.internal.module.ModuleBootstrap.finder();
 
-        int colon = optionFlag.indexOf(':');
+        int colon = optionFlag.indexOf('=');
         if (colon == -1) {
             finder.findAll().stream()
                 .sorted(Comparator.comparing(ModuleReference::descriptor))
                 .forEach(md -> {
                     ostream.println(midAndLocation(md.descriptor(),