Nice code. It's even easier with HTML::TokeParser::Simple, though.

use HTML::TokeParser::Simple;

my $p = HTML::TokeParser::Simple->new( "foo.html" )
   or die "can't open foo.html: $!\n";
while( my $t = $p->get_token ) {
   if( $t->is_start_tag('font') ) {
       my $attr = $t->return_attr;
       delete $attr->{face};
       my $attributes =  join( " ", map { qq{$_="$attr->{$_}"} } keys 
+%$attr );
       print "<font $attributes>";
   } else {
       print $t->as_is;
   }
}
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Cheers,
Ovid

New address of my CGI Course.
Silence is Evil (feel free to copy and distribute widely - note copyright text)