Fix undo backspace on macOS

src/config/mod.rs

@@ -152,6 +152,9 @@ fn default_global_vars() -> Vec<MatchVariable> {
 fn default_modulo_path() -> Option<String> {
     None
 }
+fn default_mac_post_inject_delay() -> u64 {
+    100
+}
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct Configs {
@@ -235,6 +238,9 @@ pub struct Configs {
 
     #[serde(default = "default_secure_input_watcher_interval")]
     pub secure_input_watcher_interval: i32,
+    
+    #[serde(default = "default_mac_post_inject_delay")]
+    pub mac_post_inject_delay: u64,
 
     #[serde(default = "default_secure_input_notification")]
     pub secure_input_notification: bool,

src/engine.rs

@@ -306,6 +306,13 @@ impl<
                 .set_clipboard(&previous_clipboard_content);
         }
 
+        // On macOS, because the keyinjection is async, we need to wait a bit before
+        // giving back the control. Otherwise, the injected actions will be handled back
+        // by espanso itself.
+        if cfg!(target_os = "macos") {
+            std::thread::sleep(std::time::Duration::from_millis(config.mac_post_inject_delay));
+        }
+
         // Re-allow espanso to interpret actions
         self.is_injecting.store(false, Release);
 

src/matcher/scrolling.rs

@@ -106,13 +106,6 @@ impl<'a, R: MatchReceiver, M: ConfigManager<'a>> super::Matcher for ScrollingMat
             .word_separators
             .contains(&c.chars().nth(0).unwrap_or_default());
 
-        // Workaround needed on macos to consider espanso replacement key presses as separators.
-        if cfg!(target_os = "macos") {
-            if c.len() > 1 {
-                is_current_word_separator = true;
-            }
-        }
-
         let mut was_previous_char_a_match = self.was_previous_char_a_match.borrow_mut(); 
         (*was_previous_char_a_match) = false;