Handle AltGr as literal char in textarea

codex-rs/tui/src/bottom_pane/textarea.rs

@@ -247,6 +247,16 @@ impl TextArea {
             } if modifiers == (KeyModifiers::CONTROL | KeyModifiers::ALT) => {
                 self.delete_backward_word()
             },
+            KeyEvent {
+                code: KeyCode::Char(c),
+                modifiers,
+                ..
+            } if modifiers.contains(KeyModifiers::ALT)
+                && modifiers.contains(KeyModifiers::CONTROL) =>
+            {
+                // AltGr on many keyboards reports as Ctrl+Alt; treat it as a literal char.
+                self.insert_str(&c.to_string());
+            }
             KeyEvent {
                 code: KeyCode::Backspace,
                 modifiers: KeyModifiers::ALT,
@@ -1454,6 +1464,17 @@ mod tests {
         assert_eq!(t.cursor(), 3);
     }
 
+    #[test]
+    fn altgr_ctrl_alt_char_inserts_literal() {
+        let mut t = ta_with("");
+        t.input(KeyEvent::new(
+            KeyCode::Char('c'),
+            KeyModifiers::CONTROL | KeyModifiers::ALT,
+        ));
+        assert_eq!(t.text(), "c");
+        assert_eq!(t.cursor(), 1);
+    }
+
     #[test]
     fn cursor_vertical_movement_across_lines_and_bounds() {
         let mut t = ta_with("short\nloooooooooong\nmid");