arch-tag problem?

Hey everyone,

Is there any particular reason why tla will not recognise the  
following line as a correct arch-tag?

<?php /* arch-tag: 17B24542-9529-4E47-A1FB-4F799D873AAF */ ?>

If I change it to read:

<!-- arch-tag: 17B24542-9529-4E47-A1FB-4F799D873AAF -->

Everything works fine.  (But then the arch-tag shows up in my HTML,  
which I'd like to avoid...)
Did I stumble upon a bug or is this a Feature I Do Not Understand? :)


hellfish:~/work/2007/vdms/apps/backend/modules/country aderuwe$ tla -- 
version
The GNU Arch Revision Control System (tla) 1.3.5
tla--atai--1.3--patch-72, built on Feb 10 2007

on MacOS X 10.4.8


Alexander Deruwe