From 3abd987584ef7606882a80219d59a3bc13c07283 Mon Sep 17 00:00:00 2001
From: Willem <willemtsade.git.5785@distributedrebirth.love>
Date: Tue, 7 Jan 2025 19:41:28 +0100
Subject: [PATCH] Fixed java unicode bug in string of unknown char exception

---
 .../java/org/x4o/o2o/fc18/FourCornerUnicodeImport.java     | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerUnicodeImport.java b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerUnicodeImport.java
index 4a70ad3..f098a65 100644
--- a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerUnicodeImport.java
+++ b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerUnicodeImport.java
@@ -183,7 +183,12 @@ public class FourCornerUnicodeImport {
 					continue;
 				}
 			}
-			throw new IllegalArgumentException("Unsupported char: '" + ((char)codePoint) + "' 0x" + Integer.toHexString(codePoint));
+			StringBuilder err = new StringBuilder();
+			err.append("Unsupported char: '");
+			err.appendCodePoint(codePoint);
+			err.append("' 0x");
+			err.append(Integer.toHexString(codePoint));
+			throw new IllegalArgumentException(err.toString());
 		}
 		return result;
 	}