notifications: BEL and OSC-777 now focuses the window on notification activation

Or put more propertly; if the notification daemon, and the
notification helper used by foot has been configured
properly (i.e. they both support XDG activation tokens), notifications
generated by BEL and OSC-777 will now raise/focus the window when the
default action of the notification is activated - typically by
clicking the notification.

Closes #1822

CHANGELOG.md

@@ -69,6 +69,14 @@
 
 * `cursor.unfocused-style` is now effective even when `cursor.style`
   is not `block`.
+* Activating a notification triggered with OSC-777, or BEL, now
+  focuses the foot window, if XDG activation tokens are supported by
+  the compositor, the notification daemon, and the notification helper
+  used by foot (i.e. `desktop-notifications.command`). This has been
+  supported for OSC-99 since 1.18.0, and now we also support it for
+  BEL and OSC-777 ([#1822][1822]).
+
+[1822]: https://codeberg.org/dnkl/foot/issues/1822
 
 
 ### Deprecated

osc.c

@@ -558,9 +558,10 @@ osc_notify(struct terminal *term, char *string)
     }
 
     notify_notify(term, &(struct notification){
-        .title = (char *)title,
-        .body = (char *)msg,
+        .title = xstrdup(title),
+        .body = xstrdup(msg),
         .expire_time = -1,
+        .focus = true,
     });
 }
 

terminal.c

@@ -3597,9 +3597,10 @@ term_bell(struct terminal *term)
 
     if (term->conf->bell.notify) {
         notify_notify(term, &(struct notification){
-            .title = (char *)"Bell",
-            .body = (char *)"Bell in terminal",
+            .title = xstrdup("Bell"),
+            .body = xstrdup("Bell in terminal"),
             .expire_time = -1,
+            .focus = true,
         });
     }