Convert line endings when creating ReplCodeLine, fixes KT-15861

(cherry picked from commit 894ee4c)

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/repl/GenericReplChecker.kt

@@ -18,6 +18,7 @@ package org.jetbrains.kotlin.cli.jvm.repl
 
 
 import com.intellij.openapi.Disposable
+import com.intellij.openapi.util.text.StringUtil
 import com.intellij.openapi.vfs.CharsetToolkit
 import com.intellij.psi.PsiFileFactory
 import com.intellij.psi.impl.PsiFileFactoryImpl
@@ -85,7 +86,7 @@ open class GenericReplChecker(
         stateLock.write {
             val scriptFileName = makeScriptBaseName(codeLine, generation)
             val virtualFile =
-                    LightVirtualFile("$scriptFileName${KotlinParserDefinition.STD_SCRIPT_EXT}", KotlinLanguage.INSTANCE, codeLine.code).apply {
+                    LightVirtualFile("$scriptFileName${KotlinParserDefinition.STD_SCRIPT_EXT}", KotlinLanguage.INSTANCE, StringUtil.convertLineSeparators(codeLine.code)).apply {
                         charset = CharsetToolkit.UTF8_CHARSET
                     }
             val psiFile: KtFile = psiFileFactory.trySetupPsiForFile(virtualFile, KotlinLanguage.INSTANCE, true, false) as KtFile?

compiler/tests/org/jetbrains/kotlin/cli/jvm/repl/GenericReplTest.kt

@@ -82,6 +82,23 @@ class GenericReplTest : TestCase() {
         Disposer.dispose(disposable)
     }
 
+    @Test
+    fun testReplCodeFormat() {
+
+        val disposable = Disposer.newDisposable()
+
+        val repl = TestRepl(disposable,
+                            listOf(File(KotlinIntegrationTestBase.getCompilerLib(), "kotlin-runtime.jar")),
+                            "kotlin.script.templates.standard.ScriptTemplateWithArgs")
+
+        val codeLine0 = ReplCodeLine(0, "val l1 = 1\r\nl1\r\n")
+        val res0 = repl.replCompiler?.check(codeLine0)
+        val res0c = res0 as? ReplCheckResult.Ok
+        TestCase.assertNotNull("Unexpected compile result: $res0", res0c)
+
+        Disposer.dispose(disposable)
+    }
+
     @Test
     fun testRepPackage() {