[NTG-context] Type-setting filenames

[richard.stephens at converteam.com]

I am using \filename to type-set filenames.  Some of these are very  long
(greater than 30 characters) and overhang
the right hand margin, sometimes even disappearing off the edge of the
page.  The first line break is just before the
full stop.  There are usually plenty of spaces in the names.  Can I get
ConTeXt to put a line-break into filenames?

Thanks,

Richard