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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Tue, 2 Aug 2022 19:16:23 +0200
Subject: [PATCH] Fix command preprocess cancelling and command changing
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index e88c82aac6d9947c7205f865c18146e7a5756b40..1ff25ce408aba3620455f74e1535b5862b3bbdf9 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -2259,13 +2259,24 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
PlayerCommandPreprocessEvent event = new PlayerCommandPreprocessEvent(this.getCraftPlayer(), command, new LazyPlayerSet(this.server));
this.cserver.getPluginManager().callEvent(event);
- if (event.isCancelled()) {
- return;
- }
command = event.getMessage().substring(1);
- ParseResults<CommandSourceStack> parseresults = this.parseCommand(command);
- Map<String, PlayerChatMessage> map = (packet.command().equals(command)) ? this.collectSignedArguments(packet, PreviewableCommand.of(parseresults)) : Collections.emptyMap();
+ // Paper start - send message headers for cancelled or changed commands
+ ParseResults<CommandSourceStack> parseresults = this.parseCommand(packet.command());
+ Map<String, PlayerChatMessage> map = this.collectSignedArguments(packet, PreviewableCommand.of(parseresults));
+ if (event.isCancelled() || !packet.command().equals(command)) {
+ for (final PlayerChatMessage message : map.values()) {
+ player.server.getPlayerList().broadcastMessageHeader(message, Set.of());
+ }
+ if (event.isCancelled()) {
+ return;
+ }
+
+ // Remove signatures if the command was changed and use the changed command source stack
+ map.clear();
+ parseresults = this.parseCommand(command);
+ }
+ // Paper end
// CraftBukkit end
Iterator iterator = map.values().iterator();
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