From a55e136708d93f39018512f640777efb9653c7a9 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sat, 1 Sep 2018 11:29:52 +0100
Subject: [PATCH] fix newlines in spigot tab list API

Spigots implementation around the header/footer strips newlines from the
header/footer, this patch allows the tab list header/footer to retain newlines.

diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index ce58cfc11e..143779dfc2 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -368,20 +368,20 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
     @Override
     public void setPlayerListHeader(String header) {
-        this.playerListHeader = CraftChatMessage.fromStringOrNull(header);
+        this.playerListHeader = CraftChatMessage.fromStringOrNull(header, true); // Paper - fix up spigot tab API
         updatePlayerListHeaderFooter();
     }
 
     @Override
     public void setPlayerListFooter(String footer) {
-        this.playerListFooter = CraftChatMessage.fromStringOrNull(footer);
+        this.playerListFooter = CraftChatMessage.fromStringOrNull(footer, true); // Paper - fix up spigot tab API
         updatePlayerListHeaderFooter();
     }
 
     @Override
     public void setPlayerListHeaderFooter(String header, String footer) {
-        this.playerListHeader = CraftChatMessage.fromStringOrNull(header);
-        this.playerListFooter = CraftChatMessage.fromStringOrNull(footer);
+        this.playerListHeader = CraftChatMessage.fromStringOrNull(header, true); // Paper - fix up spigot tab API
+        this.playerListFooter = CraftChatMessage.fromStringOrNull(footer, true); // Paper - fix up spigot tab API
         updatePlayerListHeaderFooter();
     }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftChatMessage.java b/src/main/java/org/bukkit/craftbukkit/util/CraftChatMessage.java
index a067e39d54..5e20a9a619 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftChatMessage.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftChatMessage.java
@@ -143,7 +143,13 @@ public final class CraftChatMessage {
     }
 
     public static IChatBaseComponent fromStringOrNull(String message) {
-        return (message == null || message.isEmpty()) ? null : fromString(message)[0];
+        // Paper start - fix up spigot tab API
+        return fromStringOrNull(message, false);
+    }
+
+    public static IChatBaseComponent fromStringOrNull(String message, boolean keepNewlines) {
+        return (message == null || message.isEmpty()) ? null : fromString(message, keepNewlines)[0];
+        // Paper end - fix up spigot tab API
     }
 
     public static IChatBaseComponent[] fromString(String message) {
-- 
2.20.1