errors to stdout?

Hugs dumps errors, traces, and other diagnostics to stdout. It even has the rather perverse #define errorStream stdout (except on windows, it appears) so I assume there is a reason for it. However, I can't imagine the reason, and it is quite annoying to me. I am running "December 2001" hugs on Debian GNU/Linux. I looked at the CVS sources, and trace now seems to go to stderr, but errors still seem to go to stdout (I haven't tried it to be sure). Would you accept a patch to change everything to stderr? Andrew