Automatically add -- after script/expression in kotlin runner

#KT-37987 fixed

compiler/cli/cli-runner/src/org/jetbrains/kotlin/runner/runners.kt

@@ -141,6 +141,9 @@ class ScriptRunner(private val path: String) : RunnerWithCompiler() {
             addClasspathArgIfNeeded(classpath)
             add("-script")
             add(path)
+            if (arguments.isNotEmpty() && arguments.first() != "--") {
+                add("--")
+            }
             addAll(arguments)
         }
         runCompiler(compilerClasspath, compilerArgs)
@@ -153,6 +156,9 @@ class ExpressionRunner(private val code: String) : RunnerWithCompiler() {
             addClasspathArgIfNeeded(classpath)
             add("-expression")
             add(code)
+            if (arguments.isNotEmpty() && arguments.first() != "--") {
+                add("--")
+            }
             addAll(arguments)
         }
         runCompiler(compilerClasspath, compilerArgs)

compiler/testData/launcher/printargs.kts

@@ -0,0 +1 @@
+println(args.joinToString())

compiler/tests/org/jetbrains/kotlin/cli/LauncherScriptTest.kt

@@ -176,6 +176,41 @@ class LauncherScriptTest : TestCaseWithTmpdir() {
         )
     }
 
+    fun testCommandlineProcessing() {
+        runProcess(
+            "kotlin",
+            "-e",
+            "println(args.joinToString())",
+            "-a",
+            "b",
+            expectedStdout = "-a, b\n"
+        )
+        runProcess(
+            "kotlin",
+            "-e",
+            "println(args.joinToString())",
+            "--",
+            "-a",
+            "b",
+            expectedStdout = "-a, b\n"
+        )
+        runProcess(
+            "kotlin",
+            "$testDataDirectory/printargs.kts",
+            "-a",
+            "b",
+            expectedStdout = "-a, b\n"
+        )
+        runProcess(
+            "kotlin",
+            "$testDataDirectory/printargs.kts",
+            "--",
+            "-a",
+            "b",
+            expectedStdout = "-a, b\n"
+        )
+    }
+
     fun testLegacyAssert() {
         runProcess(
             "kotlinc",