Can't Rewind Regular File After read-char

[Olin Shivers <shivers@clark.lcs.mit.edu>]

Yep, that's a bug, all right.

I'm away from my sources, but I'm sure it's a buffered I/O synchronisation
problem.

Hope you didn't fry any radiation therapy patients or take out any investment
banks with the software.

Thanks for the report.
        -Olin