mixin to fix RichTextCompiler not handling newlines correctly

Author: ghzdude

src/main/java/gregtech/mixins/mui2/TextCompilerMixin.java

@@ -0,0 +1,27 @@
+package gregtech.mixins.mui2;
+
+import com.cleanroommc.modularui.drawable.text.RichTextCompiler;
+import com.llamalad7.mixinextras.injector.wrapoperation.Operation;
+import com.llamalad7.mixinextras.injector.wrapoperation.WrapOperation;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+
+// todo remove once fixed in mui2
+@Mixin(value = RichTextCompiler.class, remap = false)
+public abstract class TextCompilerMixin {
+
+    @Shadow
+    protected abstract void newLine();
+
+    @WrapOperation(method = "compile",
+                   at = @At(value = "INVOKE",
+                            target = "Lcom/cleanroommc/modularui/drawable/text/RichTextCompiler;compileString(Ljava/lang/String;)V"))
+    public void fixString(RichTextCompiler instance, String c, Operation<Void> original) {
+        String[] lines = c.replace("\\n", "/n").split("/n");
+        for (int i = 0; i < lines.length; i++) {
+            original.call(instance, lines[i]);
+            if (i + 1 != lines.length) newLine();
+        }
+    }
+}

src/main/resources/mixins.gregtech.mui2.json

@@ -7,7 +7,9 @@
   "injectors": {
     "maxShiftBy": 10
   },
-  "mixins": [],
+  "mixins": [
+    "TextCompilerMixin"
+  ],
   "client": [
     "LangKeyMixin"
   ],