fix: send shifted punctuation as text in kitty mode

refs #1105

3 files changed, 110 insertions, 0 deletions

diff --git a/docs/next/CHANGELOG.md b/docs/next/CHANGELOG.md
index 36eade52..e4220a98 100644
--- a/docs/next/CHANGELOG.md
+++ b/docs/next/CHANGELOG.md
@@ -18,6 +18,7 @@
 - Bumped the client/server protocol version to 15 for socket API placement mutation event and response compatibility.
 
 ### Fixed
+- Windows clients now send shifted punctuation such as `!`, `?`, and `:` as literal text to Kitty-keyboard-mode pane apps, fixing Kiro CLI TUI prompts while preserving modified key chords. (#1105)
 - `herdr --remote` now prints clean remote attach failures and SSH authentication guidance instead of Rust Debug-formatted I/O errors when SSH authentication is denied. (#1034)
 - `herdr server stop` now stops Windows named-pipe servers instead of failing with `named pipes do not support I/O timeouts`. (#1113)
 - `herdr server stop` now waits until both server sockets are unreachable before returning, avoiding an immediate first-start failure when restarting right after replacing the binary.
diff --git a/src/app/api/panes.rs b/src/app/api/panes.rs
index 14c62942..fdda8750 100644
--- a/src/app/api/panes.rs
+++ b/src/app/api/panes.rs
@@ -2013,6 +2013,35 @@ mod tests {
     }
 
     #[tokio::test]
+    async fn api_pane_send_keys_sends_shifted_punctuation_as_text_in_kitty_mode() {
+        let (mut app, pane_id) = app_with_test_workspace();
+        let internal_pane_id = app.state.workspaces[0].tabs[0].root_pane;
+        let (runtime, mut rx) =
+            crate::terminal::TerminalRuntime::test_with_channel_and_scrollback_bytes(
+                80,
+                24,
+                0,
+                b"\x1b[>7u",
+                1,
+            );
+        app.state.insert_test_runtime(internal_pane_id, runtime);
+
+        let response = app.handle_api_request(crate::api::schema::Request {
+            id: "req".into(),
+            method: crate::api::schema::Method::PaneSendKeys(PaneSendKeysParams {
+                pane_id,
+                keys: vec!["shift+?".into()],
+            }),
+        });
+
+        let success: SuccessResponse = serde_json::from_str(&response).unwrap();
+        assert_eq!(success.id, "req");
+        assert_eq!(success.result, ResponseResult::Ok {});
+        assert_eq!(rx.try_recv().unwrap(), bytes::Bytes::from_static(b"?"));
+        assert!(rx.try_recv().is_err());
+    }
+
+    #[tokio::test]
     async fn api_pane_send_input_keys_accept_key_combo_chords() {
         let (mut app, pane_id, mut rx) = app_with_send_key_runtime(1);
 
diff --git a/src/input/encode.rs b/src/input/encode.rs
index 79ec0bf6..b10f8003 100644
--- a/src/input/encode.rs
+++ b/src/input/encode.rs
@@ -379,9 +379,39 @@ fn shifted_text_char(key: &TerminalKey, ch: char) -> Option<char> {
         return Some(ch.to_ascii_uppercase());
     }
 
+    if is_shifted_ascii_punctuation(ch) {
+        return Some(ch);
+    }
+
     None
 }
 
+fn is_shifted_ascii_punctuation(ch: char) -> bool {
+    matches!(
+        ch,
+        '!' | '@'
+            | '#'
+            | '$'
+            | '%'
+            | '^'
+            | '&'
+            | '*'
+            | '('
+            | ')'
+            | '_'
+            | '+'
+            | '{'
+            | '}'
+            | '|'
+            | ':'
+            | '"'
+            | '<'
+            | '>'
+            | '?'
+            | '~'
+    )
+}
+
 fn canonical_kitty_char(ch: char, mods: KeyModifiers) -> char {
     if mods.contains(KeyModifiers::SHIFT) && ch.is_ascii_uppercase() {
         ch.to_ascii_lowercase()
@@ -849,6 +879,56 @@ mod tests {
     }
 
     #[test]
+    fn kitty_shifted_punctuation_literals_send_text() {
+        for ch in "!@#$%^&*()_+{}|:\"<>?~".chars() {
+            let key = TerminalKey::new(KeyCode::Char(ch), KeyModifiers::SHIFT);
+            let encoded = encode_terminal_key(key, KeyboardProtocol::Kitty { flags: 7 });
+            assert_eq!(encoded, ch.to_string().into_bytes(), "ch={ch}");
+        }
+    }
+
+    #[test]
+    fn kitty_shifted_punctuation_release_does_not_emit_text() {
+        let key = TerminalKey::new(KeyCode::Char('?'), KeyModifiers::SHIFT)
+            .with_kind(crossterm::event::KeyEventKind::Release);
+        assert_eq!(
+            encode_terminal_key(key, KeyboardProtocol::Kitty { flags: 7 }),
+            b""
+        );
+    }
+
+    #[test]
+    fn kitty_shifted_punctuation_does_not_infer_layout() {
+        let key = TerminalKey::new(KeyCode::Char('1'), KeyModifiers::SHIFT);
+        assert_eq!(
+            encode_terminal_key(key, KeyboardProtocol::Kitty { flags: 7 }),
+            b"\x1b[49;2:1u"
+        );
+    }
+
+    #[test]
+    fn kitty_modified_shifted_punctuation_stays_modified_key() {
+        for (modifiers, expected) in [
+            (
+                KeyModifiers::CONTROL | KeyModifiers::SHIFT,
+                b"\x1b[33;6:1u".as_slice(),
+            ),
+            (
+                KeyModifiers::ALT | KeyModifiers::SHIFT,
+                b"\x1b[33;4:1u".as_slice(),
+            ),
+            (
+                KeyModifiers::SUPER | KeyModifiers::SHIFT,
+                b"\x1b[33;10:1u".as_slice(),
+            ),
+        ] {
+            let key = TerminalKey::new(KeyCode::Char('!'), modifiers);
+            let encoded = encode_terminal_key(key, KeyboardProtocol::Kitty { flags: 7 });
+            assert_eq!(encoded, expected, "modifiers={modifiers:?}");
+        }
+    }
+
+    #[test]
     fn release_bytes_gated_on_report_event_types() {
         for code in [KeyCode::Enter, KeyCode::Backspace] {
             let release = KeyEvent::new_with_kind(