From 3f836a44ccc507713b4cfcc87149e5853e02185a Mon Sep 17 00:00:00 2001
From: The-Lum <86879521+The-Lum@users.noreply.github.com>
Date: Fri, 8 Dec 2023 21:20:22 +0000
Subject: [PATCH] fix: allow (`int` corresponding of) unicode value for `Chr`
 builtin fct That fixes partialy #1571.

---
 src/net/sourceforge/plantuml/tim/stdlib/Chr.java      | 4 ++--
 test/net/sourceforge/plantuml/tim/stdlib/ChrTest.java | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/net/sourceforge/plantuml/tim/stdlib/Chr.java b/src/net/sourceforge/plantuml/tim/stdlib/Chr.java
index 622230500..7fdc13f2b 100644
--- a/src/net/sourceforge/plantuml/tim/stdlib/Chr.java
+++ b/src/net/sourceforge/plantuml/tim/stdlib/Chr.java
@@ -59,8 +59,8 @@ public class Chr extends SimpleReturnFunction {
 	public TValue executeReturnFunction(TContext context, TMemory memory, LineLocation location, List<TValue> values,
 			Map<String, TValue> named) throws EaterException, EaterExceptionLocated {
 		try {
-			final char value = (char) values.get(0).toInt();
-			return TValue.fromString("" + value);
+			final String value = String.valueOf(Character.toChars(values.get(0).toInt()));
+			return TValue.fromString(value);
 		} catch (Throwable t) {
 			return TValue.fromString("\0");
 		}
diff --git a/test/net/sourceforge/plantuml/tim/stdlib/ChrTest.java b/test/net/sourceforge/plantuml/tim/stdlib/ChrTest.java
index cf3886aaa..97eb1ece3 100644
--- a/test/net/sourceforge/plantuml/tim/stdlib/ChrTest.java
+++ b/test/net/sourceforge/plantuml/tim/stdlib/ChrTest.java
@@ -32,9 +32,9 @@ class ChrTest {
 			" 34   , '\"' ",
 			" 224  , à ",
 			" 233  , é ",
-// TODO: fix `%chr` to allow Unicode chars, the corresponding tests are here:
-//			" 128512 , 😀 ",
-//			" 128512 , \uD83D\uDE00 ",
+// DONE: fix `%chr` to allow Unicode chars, the corresponding tests are here:
+			" 128512 , 😀 ",
+			" 128512 , \uD83D\uDE00 ",
 	})
 	void executeReturnFunctionChrTest(Integer input, String expected) throws EaterException, EaterExceptionLocated {
 		Chr cut = new Chr();