Filter out disallowed control chars (#14057)

Author: HaHaWTH

paper-server/patches/sources/net/minecraft/commands/Commands.java.patch

@@ -101,7 +101,7 @@
                  StackTraceElement[] stackTrace = e.getStackTrace();
 
                  for (int i = 0; i < Math.min(stackTrace.length, 3); i++) {
-@@ -366,7 +_,11 @@
+@@ -366,12 +_,16 @@
              return ContextChain.tryFlatten(command.getContext().build(commandString))
                  .orElseThrow(() -> CommandSyntaxException.BUILT_IN_EXCEPTIONS.dispatcherUnknownCommand().createWithContext(command.getReader()));
          } catch (CommandSyntaxException e) {
@@ -114,6 +114,12 @@
              if (e.getInput() != null && e.getCursor() >= 0) {
                  int cursor = Math.min(e.getInput().length(), e.getCursor());
                  MutableComponent context = Component.empty()
+                     .withStyle(ChatFormatting.GRAY)
+-                    .withStyle(s -> s.withClickEvent(new ClickEvent.SuggestCommand("/" + commandString)));
++                    .withStyle(s -> s.withClickEvent(new ClickEvent.SuggestCommand("/" + net.minecraft.util.StringUtil.filterText(commandString)))); // Paper - Filter out disallowed control chars
+                 if (cursor > 10) {
+                     context.append(CommonComponents.ELLIPSIS);
+                 }
 @@ -383,7 +_,17 @@
                  }