--- a/src/luan/modules/RegexLuan.java	Sun Apr 13 20:59:22 2025 -0600
+++ b/src/luan/modules/RegexLuan.java	Mon Apr 14 12:46:45 2025 -0600
@@ -2,6 +2,7 @@
 
 import java.util.regex.Pattern;
 import java.util.regex.Matcher;
+import java.util.regex.PatternSyntaxException;
 import luan.Luan;
 import luan.LuanMutable;
 import luan.LuanTable;
@@ -13,8 +14,12 @@
 	public Pattern pattern;
 	private boolean immutable = false;
 
-	public RegexLuan(String s) {
-		this.pattern = Pattern.compile(s);
+	public RegexLuan(String s) throws LuanException {
+		try {
+			this.pattern = Pattern.compile(s);
+		} catch(java.util.regex.PatternSyntaxException e) {
+			throw new LuanException(e.getMessage(),e);
+		}
 	}
 
 	@Override public boolean isImmutable() {
@@ -41,7 +46,7 @@
 		int n = m.groupCount();
 		Object[] rtn = new Object[2+n];
 		rtn[0] = m.start() + 1;
-		rtn[1] = m.end();
+		rtn[1] = m.end() + 1;
 		for( int i=0; i<n; i++ ) {
 			rtn[2+i] = m.group(i+1);
 		}

--- a/src/luan/modules/swing/Abstract_button.luan	Sun Apr 13 20:59:22 2025 -0600
+++ b/src/luan/modules/swing/Abstract_button.luan	Mon Apr 14 12:46:45 2025 -0600
@@ -26,6 +26,9 @@
 	if key == "text" then
 		return abstract_button.java.getText()
 	end
+	if key == "is_selected" then
+		return abstract_button.java.isSelected()
+	end
 	return fail
 end
 
@@ -36,6 +39,10 @@
 		abstract_button.java.setText(value)
 		return
 	end
+	if key == "is_selected" then
+		abstract_button.java.setSelected(value)
+		return
+	end
 	return fail
 end