On Thu, Apr 30, 2009 at 07:08:37PM +0100, Rodolfo Medina wrote: > \def\temp <at> arg{#1}% [...] > \temp <at> arg [...] Looks like you've got some unwanted help here -- this is _not_ what I wrote. Something had replaced the at sign with " <at> ". Revert the change and it should work. Best, Oleg