From 3e1ca69c91459b201210bb68e3f6915335af7a8c Mon Sep 17 00:00:00 2001
From: Mikhail Dzianishchyts <mikhail.dzianishchyts@gmail.com>
Date: Mon, 17 Aug 2026 11:47:37 +0300
Subject: [PATCH] Prevent JShell from unnecessarily redefining wrappers because
 of extra newlines

---
 .../src/test/java/org/dflib/jjava/distro/KernelExecutionIT.java | 2 --
 .../java/org/dflib/jjava/kernel/execution/CodeEvaluator.java    | 2 +-
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/jjava-distro/src/test/java/org/dflib/jjava/distro/KernelExecutionIT.java b/jjava-distro/src/test/java/org/dflib/jjava/distro/KernelExecutionIT.java
index 05bcb8c..1c1d68a 100644
--- a/jjava-distro/src/test/java/org/dflib/jjava/distro/KernelExecutionIT.java
+++ b/jjava-distro/src/test/java/org/dflib/jjava/distro/KernelExecutionIT.java
@@ -1,6 +1,5 @@
 package org.dflib.jjava.distro;
 
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
@@ -12,7 +11,6 @@ public class KernelExecutionIT extends ContainerizedKernelCase {
      * scenario passes even with the bug present.
      */
     @Test
-    @Disabled
     public void variableSurvivesLaterImports() throws Exception {
         KernelRun run = executeInKernel(
                 "%maven com.fasterxml.jackson.core:jackson-databind:2.21.2",
diff --git a/jjava-kernel/src/main/java/org/dflib/jjava/kernel/execution/CodeEvaluator.java b/jjava-kernel/src/main/java/org/dflib/jjava/kernel/execution/CodeEvaluator.java
index 9b93b85..e03b0ec 100644
--- a/jjava-kernel/src/main/java/org/dflib/jjava/kernel/execution/CodeEvaluator.java
+++ b/jjava-kernel/src/main/java/org/dflib/jjava/kernel/execution/CodeEvaluator.java
@@ -89,7 +89,7 @@ public Object eval(JShell shell, String code) {
 
     protected Object evalSingle(JShell shell, String code) {
 
-        List<SnippetEvent> events = shell.eval(code);
+        List<SnippetEvent> events = shell.eval(code.strip());
 
         Object result = null;