system commands with shell expansion

[Phillip Lord]

       I'm a little stuck. I want to run a system 
command ("makeinfo" if you are interested). The problem is that I need
to pass it an argument like "*texi". And its not working, presumably
because the exec command does not operate through a shell. 

       I've also tried using the arg file parameter. This doesn't work
because ant expands the path for me. And arg does not take a fileset
either. 

       Any ideas?

       Phil