Typing: Option+Shift+- types an em dash outside Outline view (#1933)

Alt+Shift+- is Word's Collapse shortcut, which only runs in Outline view, but
dispatch claimed the key and swallowed the typed character everywhere. An Alt
shortcut whose command is disabled now leaves the key to typing.

crates/ui-egui/src/keys.rs

@@ -126,6 +126,11 @@ fn dispatch(app: &mut WordApp, key: Key, m: Modifiers) -> bool {
     let Some(name) = key_name(key) else { return false };
     let reg = app.session.registry.clone();
     if let Some(spec) = app.session.keymap.resolve(&reg, &combo(m, name, true)) {
+        // Option+Shift+- types an em dash on macOS; Word's Alt+Shift+- (Collapse) only works in
+        // Outline view, so elsewhere the key stays typing (#1933).
+        if m.alt && !crate::widgets::enabled(app, spec.id) {
+            return false;
+        }
         let _ = app.run(spec.id, json!({}));
         return true;
     }
@@ -726,6 +731,17 @@ mod tests {
         egui::Event::Key { key, physical_key: Some(key), pressed, repeat, modifiers: Modifiers { alt: true, ..Default::default() } }
     }
 
+    /// Option+Shift+- types an em dash outside Outline view, where Word's Alt+Shift+- (Collapse)
+    /// can't run, so its shortcut doesn't swallow the character (#1933).
+    #[test]
+    fn disabled_alt_shortcut_leaves_the_typed_character() {
+        let (ctx, mut a) = alt_frame_app();
+        let alt_shift = Modifiers { alt: true, shift: true, ..Default::default() };
+        let key = |pressed| egui::Event::Key { key: Key::Minus, physical_key: Some(Key::Minus), pressed, repeat: false, modifiers: alt_shift };
+        alt_frame(&ctx, &mut a, vec![key(true), egui::Event::Text("\u{2014}".into()), key(false)]);
+        assert_eq!(a.session.doc.plain_text(wordcraft_doc::StoryRef::Body).trim_end(), "\u{2014}");
+    }
+
     /// Holding a digit with Alt adds it once: its auto-repeat presses don't (#961).
     #[test]
     fn alt_code_ignores_auto_repeat() {