fix

ntfy-daemon/src/models.rs

@@ -15,7 +15,7 @@ fn emoji_map() -> &'static HashMap<String, String> {
 }
 
 fn validate_topic(topic: &str) -> Result<&str, Error> {
-    let re = Regex::new(r"^([A-z]|[0-9]|_)+$").unwrap();
+    let re = Regex::new(r"^\w+$").unwrap();
     if re.is_match(topic) {
         Ok(topic)
     } else {