Added unicode escape writing to avoid pesky encoding issues.

src/delombok/lombok/delombok/Delombok.java

@@ -327,10 +327,14 @@ public class Delombok {
 		File outFile = new File(base, fileName);
 		outFile.getParentFile().mkdirs();
 		FileOutputStream out = new FileOutputStream(outFile);
-		return new OutputStreamWriter(out, charset);
+		return createUnicodeEscapeWriter(out);
 	}
 	
 	private Writer createStandardOutWriter() {
-		return new OutputStreamWriter(System.out, charset);
+		return createUnicodeEscapeWriter(System.out);
+	}
+	
+	private Writer createUnicodeEscapeWriter(OutputStream out) {
+		return new UnicodeEscapeWriter(new OutputStreamWriter(out, charset), charset);
 	}
 }

src/delombok/lombok/delombok/UnicodeEscapeWriter.java

@@ -0,0 +1,47 @@
+package lombok.delombok;
+import java.io.IOException;
+import java.io.Writer;
+import java.nio.charset.Charset;
+import java.nio.charset.CharsetEncoder;
+
+public class UnicodeEscapeWriter extends Writer {
+	private final Writer writer;
+	private CharsetEncoder encoder;
+
+	public UnicodeEscapeWriter(Writer writer, Charset charset) {
+		this.writer = writer;
+		encoder = charset.newEncoder();
+	}
+	
+	@Override
+	public void close() throws IOException {
+		writer.close();
+	}
+
+	@Override
+	public void flush() throws IOException {
+		writer.flush();
+	}
+
+	@Override
+	public final void write(char[] cbuf, int off, int len) throws IOException {
+		int start = off;
+		int index = start;
+		int end = off + len;
+		while (index < end) {
+			if (!encoder.canEncode(cbuf[index])) {
+				writer.write(cbuf, start, index - start);
+				writeUnicodeEscape(cbuf[index]);
+				start = index + 1;
+			}
+			index++;
+		}
+		if (start < end) {
+			writer.write(cbuf, start, end - start);
+		}
+	}
+	
+	protected void writeUnicodeEscape(char c) throws IOException {
+		writer.write("\\u" + Integer.toHexString(c));
+	}
+}