From e7de4e1a10aa66d4ef8f7992d5f25e9af691ebca Mon Sep 17 00:00:00 2001
From: Cardillan <122014763+cardillan@users.noreply.github.com>
Date: Wed, 30 Sep 2026 23:55:18 +0200
Subject: [PATCH] Fix empty statement fields shifting the remaining parameters
 (#12715)

* Fix empty statement fields shifting remaining parameters

* Fixed unit tests
---
 core/src/mindustry/logic/LStatement.java | 2 +-
 tests/src/test/java/LogicTests.java      | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/core/src/mindustry/logic/LStatement.java b/core/src/mindustry/logic/LStatement.java
index a0d7c71dad..69229fc275 100644
--- a/core/src/mindustry/logic/LStatement.java
+++ b/core/src/mindustry/logic/LStatement.java
@@ -90,7 +90,7 @@ public abstract class LStatement{
     /** Sanitizes variable input strings from text fields into values that will not break logic parsing. */
     public static String sanitize(String value){
         if(value.length() == 0){
-            return "";
+            return "null";
         }else if(value.length() == 1){
             if(value.charAt(0) == '"' || value.charAt(0) == ';' || value.charAt(0) == ' ' ||
             value.charAt(0) == '\n' || value.charAt(0) == '\t' || value.charAt(0) == '#'){
diff --git a/tests/src/test/java/LogicTests.java b/tests/src/test/java/LogicTests.java
index 140145398a..3265834ff8 100644
--- a/tests/src/test/java/LogicTests.java
+++ b/tests/src/test/java/LogicTests.java
@@ -123,7 +123,7 @@ public class LogicTests{
         Arguments.of("a bare single semicolon is invalid", ";", "invalid"),
         Arguments.of("a bare single space is invalid", " ", "invalid"),
         Arguments.of("a single ordinary character passes through unchanged", "a", "a"),
-        Arguments.of("empty input stays empty", "", ""),
+        Arguments.of("empty input gets converted to null", "", "null"),
         Arguments.of("a plain already-quoted value is untouched", "\"hello\"", "\"hello\""),
         Arguments.of("a unescaped quote at the end gets doubled", "\"hello\\\"", "\"hello\\\\\""),
         Arguments.of(
@@ -454,4 +454,4 @@ public class LogicTests{
     void crlfLabelsResolveToTheSameJumpLocationAsLfLabels(){
         assertDoesNotThrow(() -> load("loop:\r\njump loop always\r\n"));
     }
-}
\ No newline at end of file
+}