--- /dev/null
+--TEST--
+Test of Sieve relational extension (RFC5231)
+--SKIPIF--
+--FILE--
+<?php
+include '../lib/rcube_sieve_script.php';
+
+$txt = '
+require ["relational","comparator-i;ascii-numeric"];
+# rule:[redirect]
+if header :value "ge" :comparator "i;ascii-numeric"
+ ["X-Spam-score"] ["14"] {redirect "test@test.tld";}
+';
+
+$s = new rcube_sieve_script($txt);
+echo $s->as_text();
+
+?>
+--EXPECT--
+require ["relational","comparator-i;ascii-numeric"];
+# rule:[redirect]
+if header :value "ge" :comparator "i;ascii-numeric" "X-Spam-score" "14"
+{
+ redirect "test@test.tld";
+}