- string sanitizing does not remove mid-line spaces

common_func.php

@@ -2,7 +2,7 @@
 
 function explode_list(string $str) : array {
     if (($str = trim($str, " \n\r\t\v\0,")) !== "") {
-        return array_map(fn($a) => trim($a), explode(",", str_replace(" ", "", $str)));
+        return array_map(fn($a) => trim($a), explode(",", trim($str)));
     } else {
         return [];
     }