Added the magic flag to regexes to say whether it is useful for magic to use

src/core/operations/ParseUNIXFilePermissions.mjs

@@ -30,6 +30,7 @@ class ParseUNIXFilePermissions extends Operation {
             {
                 match:  "^\\s*d[rxw-]{9}\\s*$",
                 flags:  "",
+                magic:  true,
                 args:   []
             }
         ]);