--- a/samples/exec.js	Tue Jun 30 08:51:06 2015 -0700
+++ b/samples/exec.js	Wed Jul 01 16:26:25 2015 +0200
@@ -39,9 +39,10 @@
 $EXEC("cat", "Hello, world!")
 
 // Additional arguments can be passed after the stdin argument, as an array of
-// strings, or a sequence of varargs:
-$EXEC("ls", "" /* no stdin */, "-l", "-a")
-$EXEC("ls", "" /* no stdin */, ["-l", "-a"])
+// strings, or a sequence of varargs (if there is no stdin, null or undefined
+// can be passed):
+$EXEC("ls", undefined, "-l", "-a")
+$EXEC("ls", undefined, ["-l", "-a"])
 
 // Output of running external commands is returned from $EXEC:
 print($EXEC("ls"))

--- a/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptingFunctions.java	Tue Jun 30 08:51:06 2015 -0700
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptingFunctions.java	Wed Jul 01 16:26:25 2015 +0200
@@ -128,9 +128,9 @@
      * Nashorn extension: exec a string in a separate process.
      *
      * @param self   self reference
-     * @param args   string to execute, input and additional arguments, to be appended to {@code string}. Additional arguments can be passed as
-     *               either one JavaScript array, whose elements will be converted to strings; or as a sequence of
-     *               varargs, each of which will be converted to a string.
+     * @param args   string to execute, input and additional arguments, to be appended to {@code string}. Additional
+     *               arguments can be passed as either one JavaScript array, whose elements will be converted to
+     *               strings; or as a sequence of varargs, each of which will be converted to a string.
      *
      * @return output string from the request
      *
@@ -215,13 +215,13 @@
         errThread.start();
 
         // If input is present, pass on to process.
-        try (OutputStreamWriter outputStream = new OutputStreamWriter(process.getOutputStream())) {
-            if (input != UNDEFINED) {
+        if (!JSType.nullOrUndefined(input)) {
+            try (OutputStreamWriter outputStream = new OutputStreamWriter(process.getOutputStream())) {
                 final String in = JSType.toString(input);
                 outputStream.write(in, 0, in.length());
+            } catch (final IOException ex) {
+                // Process was not expecting input.  May be normal state of affairs.
             }
-        } catch (final IOException ex) {
-            // Process was not expecting input.  May be normal state of affairs.
         }
 
         // Wait for the process to complete.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/script/nosecurity/JDK-8130127.js	Wed Jul 01 16:26:25 2015 +0200
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8130127: streamline input parameter of Nashorn scripting $EXEC function
+ *
+ * Test different variants of stdin passing to $EXEC.
+ *
+ * @test
+ * @option -scripting
+ * @run
+ */
+
+var File = java.io.File,
+    sep = File.separator,
+    System = java.lang.System,
+    os = System.getProperty("os.name"),
+    win = os.startsWith("Windows"),
+    jjsName = "jjs" + (win ? ".exe" : ""),
+    javaHome = System.getProperty("java.home")
+
+var jjs = javaHome + "/../bin/".replace(/\//g, sep) + jjsName
+if (!new File(jjs).isFile()) {
+    jjs = javaHome + "/bin/".replace(/\//g, sep) + jjsName
+}
+
+var jjsCmd = jjs + " readprint.js"
+
+print($EXEC(jjsCmd))
+print($EXEC(jjsCmd, null))
+print($EXEC(jjsCmd, undefined))
+print($EXEC(jjsCmd, ""))
+
+print($EXEC(jjs, "print('hello')"))
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/script/nosecurity/JDK-8130127.js.EXPECTED	Wed Jul 01 16:26:25 2015 +0200
@@ -0,0 +1,6 @@
+
+
+
+
+hello
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/script/nosecurity/readprint.js	Wed Jul 01 16:26:25 2015 +0200
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * This is a dummy script accompanying JDK-8130127.js.
+ *
+ * @subtest
+ * @run ignore supplemental
+ */
+
+var l = readLine()
+print(l)
+