From 391e2f7a266b703d7d7606aee6e36cabb624b82f Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Wed, 19 Oct 2022 10:04:49 +0100
Subject: [PATCH] Make META-INF/spring/logback-pattern-rules repeatable

See gh-32756
---
 .../boot/logging/logback/SpringBootJoranConfigurator.java      | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/SpringBootJoranConfigurator.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/SpringBootJoranConfigurator.java
index cec2a5209d..3b47df87be 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/SpringBootJoranConfigurator.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/SpringBootJoranConfigurator.java
@@ -55,6 +55,7 @@ import org.springframework.aot.hint.TypeReference;
 import org.springframework.beans.factory.aot.BeanFactoryInitializationAotContribution;
 import org.springframework.beans.factory.aot.BeanFactoryInitializationCode;
 import org.springframework.boot.logging.LoggingInitializationContext;
+import org.springframework.core.CollectionFactory;
 import org.springframework.core.io.ByteArrayResource;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.core.io.Resource;
@@ -320,7 +321,7 @@ class SpringBootJoranConfigurator extends JoranConfigurator {
 		}
 
 		private InputStream asInputStream(Map<String, String> patternRuleRegistry) {
-			Properties properties = new Properties();
+			Properties properties = CollectionFactory.createSortedProperties(true);
 			patternRuleRegistry.forEach(properties::setProperty);
 			ByteArrayOutputStream bytes = new ByteArrayOutputStream();
 			try {