tui: double-press Ctrl+C/Ctrl+D to quit

Replace the quit confirmation prompt menu with a transient footer hint.

The first press of Ctrl+C or Ctrl+D shows 'ctrl + <key> again to quit'
for 1s. Pressing the same key again within that window exits via a
shutdown-first flow so cleanup can run.

Remove leftover prompt-related config/events and rename the footer mode
to avoid Ctrl+C-specific naming. Update docs/snapshots and switch the
markdownlint-cli2 config to YAML.

Author: joshka-oai

.markdownlint-cli2.jsonc

@@ -0,0 +1,3 @@
+config:
+  MD013:
+    line_length: 100

.markdownlint-cli2.yaml

@@ -28,8 +28,6 @@ pub enum ConfigEdit {
     SetNoticeHideWorldWritableWarning(bool),
     /// Toggle the rate limit model nudge acknowledgement flag.
     SetNoticeHideRateLimitModelNudge(bool),
-    /// Toggle the exit confirmation prompt acknowledgement flag.
-    SetNoticeHideExitConfirmationPrompt(bool),
     /// Toggle the Windows onboarding acknowledgement flag.
     SetWindowsWslSetupAcknowledged(bool),
     /// Toggle the model migration prompt acknowledgement flag.
@@ -282,11 +280,6 @@ impl ConfigDocument {
                 &[Notice::TABLE_KEY, "hide_rate_limit_model_nudge"],
                 value(*acknowledged),
             )),
-            ConfigEdit::SetNoticeHideExitConfirmationPrompt(acknowledged) => Ok(self.write_value(
-                Scope::Global,
-                &[Notice::TABLE_KEY, "hide_exit_confirmation_prompt"],
-                value(*acknowledged),
-            )),
             ConfigEdit::SetNoticeHideModelMigrationPrompt(migration_config, acknowledged) => {
                 Ok(self.write_value(
                     Scope::Global,
@@ -621,14 +614,6 @@ impl ConfigEditsBuilder {
         self
     }
 
-    pub fn set_hide_exit_confirmation_prompt(mut self, acknowledged: bool) -> Self {
-        self.edits
-            .push(ConfigEdit::SetNoticeHideExitConfirmationPrompt(
-                acknowledged,
-            ));
-        self
-    }
-
     pub fn set_hide_model_migration_prompt(mut self, model: &str, acknowledged: bool) -> Self {
         self.edits
             .push(ConfigEdit::SetNoticeHideModelMigrationPrompt(
@@ -1023,33 +1008,6 @@ hide_rate_limit_model_nudge = true
         assert_eq!(contents, expected);
     }
 
-    #[test]
-    fn blocking_set_hide_exit_confirmation_prompt_preserves_table() {
-        let tmp = tempdir().expect("tmpdir");
-        let codex_home = tmp.path();
-        std::fs::write(
-            codex_home.join(CONFIG_TOML_FILE),
-            r#"[notice]
-existing = "value"
-"#,
-        )
-        .expect("seed");
-
-        apply_blocking(
-            codex_home,
-            None,
-            &[ConfigEdit::SetNoticeHideExitConfirmationPrompt(true)],
-        )
-        .expect("persist");
-
-        let contents =
-            std::fs::read_to_string(codex_home.join(CONFIG_TOML_FILE)).expect("read config");
-        let expected = r#"[notice]
-existing = "value"
-hide_exit_confirmation_prompt = true
-"#;
-        assert_eq!(contents, expected);
-    }
     #[test]
     fn blocking_set_hide_gpt5_1_migration_prompt_preserves_table() {
         let tmp = tempdir().expect("tmpdir");

codex-rs/core/src/config/edit.rs

@@ -552,8 +552,6 @@ pub struct Notice {
     pub hide_world_writable_warning: Option<bool>,
     /// Tracks whether the user opted out of the rate limit model switch reminder.
     pub hide_rate_limit_model_nudge: Option<bool>,
-    /// Tracks whether the exit confirmation prompt should be suppressed.
-    pub hide_exit_confirmation_prompt: Option<bool>,
     /// Tracks whether the user has seen the model migration prompt
     pub hide_gpt5_1_migration_prompt: Option<bool>,
     /// Tracks whether the user has seen the gpt-5.1-codex-max migration prompt

codex-rs/core/src/config/types.rs

@@ -721,14 +721,7 @@ impl App {
                 self.on_conversation_history_for_backtrack(tui, ev).await?;
             }
             AppEvent::Exit(mode) => match mode {
-                ExitMode::ShutdownFirst { confirm } => {
-                    let prompt_hidden = self.chat_widget.exit_confirmation_prompt_hidden();
-                    if confirm && !prompt_hidden {
-                        self.chat_widget.open_exit_confirmation_prompt();
-                    } else {
-                        self.chat_widget.submit_op(Op::Shutdown);
-                    }
-                }
+                ExitMode::ShutdownFirst => self.chat_widget.submit_op(Op::Shutdown),
                 ExitMode::Immediate => {
                     return Ok(false);
                 }
@@ -1093,9 +1086,6 @@ impl App {
             AppEvent::UpdateRateLimitSwitchPromptHidden(hidden) => {
                 self.chat_widget.set_rate_limit_switch_prompt_hidden(hidden);
             }
-            AppEvent::UpdateExitConfirmationPromptHidden(hidden) => {
-                self.chat_widget.set_exit_confirmation_prompt_hidden(hidden);
-            }
             AppEvent::PersistFullAccessWarningAcknowledged => {
                 if let Err(err) = ConfigEditsBuilder::new(&self.config.codex_home)
                     .set_hide_full_access_warning(true)
@@ -1141,21 +1131,6 @@ impl App {
                     ));
                 }
             }
-            AppEvent::PersistExitConfirmationPromptHidden => {
-                if let Err(err) = ConfigEditsBuilder::new(&self.config.codex_home)
-                    .set_hide_exit_confirmation_prompt(true)
-                    .apply()
-                    .await
-                {
-                    tracing::error!(
-                        error = %err,
-                        "failed to persist exit confirmation prompt preference"
-                    );
-                    self.chat_widget.add_error_message(format!(
-                        "Failed to save exit confirmation preference: {err}"
-                    ));
-                }
-            }
             AppEvent::PersistModelMigrationPromptAcknowledged {
                 from_model,
                 to_model,

codex-rs/tui/src/app.rs

@@ -158,9 +158,6 @@ pub(crate) enum AppEvent {
     /// Update whether the full access warning prompt has been acknowledged.
     UpdateFullAccessWarningAcknowledged(bool),
 
-    /// Update whether the exit confirmation prompt should be hidden.
-    UpdateExitConfirmationPromptHidden(bool),
-
     /// Update whether the world-writable directories warning has been acknowledged.
     #[cfg_attr(not(target_os = "windows"), allow(dead_code))]
     UpdateWorldWritableWarningAcknowledged(bool),
@@ -171,9 +168,6 @@ pub(crate) enum AppEvent {
     /// Persist the acknowledgement flag for the full access warning prompt.
     PersistFullAccessWarningAcknowledged,
 
-    /// Persist the acknowledgement flag for the exit confirmation prompt.
-    PersistExitConfirmationPromptHidden,
-
     /// Persist the acknowledgement flag for the world-writable directories warning.
     #[cfg_attr(not(target_os = "windows"), allow(dead_code))]
     PersistWorldWritableWarningAcknowledged,
@@ -226,8 +220,8 @@ pub(crate) enum AppEvent {
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub(crate) enum ExitMode {
-    /// Shutdown core and exit after completion; `confirm` controls the prompt.
-    ShutdownFirst { confirm: bool },
+    /// Shutdown core and exit after completion.
+    ShutdownFirst,
     /// Exit the UI loop immediately without waiting for shutdown.
     ///
     /// This skips `Op::Shutdown`, so any in-flight work may be dropped and

codex-rs/tui/src/app_event.rs

@@ -1,3 +1,5 @@
+use crate::key_hint;
+use crate::key_hint::KeyBinding;
 use crate::key_hint::has_ctrl_or_alt;
 use crossterm::event::KeyCode;
 use crossterm::event::KeyEvent;
@@ -48,7 +50,6 @@ use codex_protocol::custom_prompts::CustomPrompt;
 use codex_protocol::custom_prompts::PROMPTS_CMD_PREFIX;
 
 use crate::app_event::AppEvent;
-use crate::app_event::ExitMode;
 use crate::app_event_sender::AppEventSender;
 use crate::bottom_pane::textarea::TextArea;
 use crate::bottom_pane::textarea::TextAreaState;
@@ -107,7 +108,8 @@ pub(crate) struct ChatComposer {
     active_popup: ActivePopup,
     app_event_tx: AppEventSender,
     history: ChatComposerHistory,
-    ctrl_c_quit_hint: bool,
+    quit_shortcut_expires_at: Option<Instant>,
+    quit_shortcut_key: KeyBinding,
     esc_backtrack_hint: bool,
     use_shift_enter_hint: bool,
     dismissed_file_popup_token: Option<String>,
@@ -160,7 +162,8 @@ impl ChatComposer {
             active_popup: ActivePopup::None,
             app_event_tx,
             history: ChatComposerHistory::new(),
-            ctrl_c_quit_hint: false,
+            quit_shortcut_expires_at: None,
+            quit_shortcut_key: key_hint::ctrl(KeyCode::Char('c')),
             esc_backtrack_hint: false,
             use_shift_enter_hint,
             dismissed_file_popup_token: None,
@@ -457,16 +460,37 @@ impl ChatComposer {
         }
     }
 
-    pub fn set_ctrl_c_quit_hint(&mut self, show: bool, has_focus: bool) {
-        self.ctrl_c_quit_hint = show;
-        if show {
-            self.footer_mode = FooterMode::CtrlCReminder;
-        } else {
-            self.footer_mode = reset_mode_after_activity(self.footer_mode);
-        }
+    /// Show the transient "press again to quit" hint for `key`.
+    ///
+    /// The owner (`BottomPane`/`ChatWidget`) is responsible for scheduling a
+    /// redraw after [`super::QUIT_SHORTCUT_TIMEOUT`] so the hint can disappear
+    /// even when the UI is otherwise idle.
+    pub fn show_quit_shortcut_hint(&mut self, key: KeyBinding, has_focus: bool) {
+        self.quit_shortcut_expires_at = Instant::now()
+            .checked_add(super::QUIT_SHORTCUT_TIMEOUT)
+            .or_else(|| Some(Instant::now()));
+        self.quit_shortcut_key = key;
+        self.footer_mode = FooterMode::QuitShortcutReminder;
+        self.set_has_focus(has_focus);
+    }
+
+    /// Clear the "press again to quit" hint immediately.
+    pub fn clear_quit_shortcut_hint(&mut self, has_focus: bool) {
+        self.quit_shortcut_expires_at = None;
+        self.footer_mode = reset_mode_after_activity(self.footer_mode);
         self.set_has_focus(has_focus);
     }
 
+    /// Whether the quit shortcut hint should currently be shown.
+    ///
+    /// This is time-based rather than event-based: it may become false without
+    /// any additional user input, so the UI schedules a redraw when the hint
+    /// expires.
+    pub(crate) fn quit_shortcut_hint_visible(&self) -> bool {
+        self.quit_shortcut_expires_at
+            .is_some_and(|expires_at| Instant::now() < expires_at)
+    }
+
     fn next_large_paste_placeholder(&mut self, char_count: usize) -> String {
         let base = format!("[Pasted Content {char_count} chars]");
         let next_suffix = self.large_paste_counters.entry(char_count).or_insert(0);
@@ -1184,11 +1208,7 @@ impl ChatComposer {
                 modifiers: crossterm::event::KeyModifiers::CONTROL,
                 kind: KeyEventKind::Press,
                 ..
-            } if self.is_empty() => {
-                self.app_event_tx
-                    .send(AppEvent::Exit(ExitMode::ShutdownFirst { confirm: true }));
-                (InputResult::None, true)
-            }
+            } if self.is_empty() => (InputResult::None, false),
             // -------------------------------------------------------------
             // History navigation (Up / Down) – only when the composer is not
             // empty or when the cursor is at the correct position, to avoid
@@ -1687,7 +1707,7 @@ impl ChatComposer {
             return false;
         }
 
-        let next = toggle_shortcut_mode(self.footer_mode, self.ctrl_c_quit_hint);
+        let next = toggle_shortcut_mode(self.footer_mode, self.quit_shortcut_hint_visible());
         let changed = next != self.footer_mode;
         self.footer_mode = next;
         changed
@@ -1698,7 +1718,7 @@ impl ChatComposer {
             mode: self.footer_mode(),
             esc_backtrack_hint: self.esc_backtrack_hint,
             use_shift_enter_hint: self.use_shift_enter_hint,
-            is_task_running: self.is_task_running,
+            quit_shortcut_key: self.quit_shortcut_key,
             context_window_percent: self.context_window_percent,
             context_window_used_tokens: self.context_window_used_tokens,
         }
@@ -1708,8 +1728,13 @@ impl ChatComposer {
         match self.footer_mode {
             FooterMode::EscHint => FooterMode::EscHint,
             FooterMode::ShortcutOverlay => FooterMode::ShortcutOverlay,
-            FooterMode::CtrlCReminder => FooterMode::CtrlCReminder,
-            FooterMode::ShortcutSummary if self.ctrl_c_quit_hint => FooterMode::CtrlCReminder,
+            FooterMode::QuitShortcutReminder if self.quit_shortcut_hint_visible() => {
+                FooterMode::QuitShortcutReminder
+            }
+            FooterMode::QuitShortcutReminder => FooterMode::ShortcutSummary,
+            FooterMode::ShortcutSummary if self.quit_shortcut_hint_visible() => {
+                FooterMode::QuitShortcutReminder
+            }
             FooterMode::ShortcutSummary if !self.is_empty() => FooterMode::ContextOnly,
             other => other,
         }
@@ -2250,16 +2275,16 @@ mod tests {
         });
 
         snapshot_composer_state("footer_mode_ctrl_c_quit", true, |composer| {
-            composer.set_ctrl_c_quit_hint(true, true);
+            composer.show_quit_shortcut_hint(key_hint::ctrl(KeyCode::Char('c')), true);
         });
 
         snapshot_composer_state("footer_mode_ctrl_c_interrupt", true, |composer| {
             composer.set_task_running(true);
-            composer.set_ctrl_c_quit_hint(true, true);
+            composer.show_quit_shortcut_hint(key_hint::ctrl(KeyCode::Char('c')), true);
         });
 
         snapshot_composer_state("footer_mode_ctrl_c_then_esc_hint", true, |composer| {
-            composer.set_ctrl_c_quit_hint(true, true);
+            composer.show_quit_shortcut_hint(key_hint::ctrl(KeyCode::Char('c')), true);
             let _ = composer.handle_key_event(KeyEvent::new(KeyCode::Esc, KeyModifiers::NONE));
         });