From 703d7d3fd99810656a5d6afdacb8580ebfc32782 Mon Sep 17 00:00:00 2001
From: Christian Dupuis <cdupuis@gopivotal.com>
Date: Sun, 16 Feb 2014 14:05:25 +0100
Subject: [PATCH] Prevent EmptyStackException in case no stack of prompts is
 empty

---
 .../springframework/boot/cli/command/shell/ShellPrompts.java  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/shell/ShellPrompts.java b/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/shell/ShellPrompts.java
index a792801a7f4..bdc8e296a4d 100644
--- a/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/shell/ShellPrompts.java
+++ b/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/shell/ShellPrompts.java
@@ -43,7 +43,9 @@ public class ShellPrompts {
 	 * @see #pushPrompt(String)
 	 */
 	public void popPrompt() {
-		this.prompts.pop();
+		if (!this.prompts.isEmpty()) {
+			this.prompts.pop();
+		}
 	}
 
 	/**