$res or return html_page($ctx, 404, \$log);
$ref eq 'ARRAY' or return html_page($ctx, 500, \$log);
my ($git, $oid, $type, $size, $di) = @$res;
return show_other($ctx, $res, \$log, $fn) if $type ne 'blob';
$res or return html_page($ctx, 404, \$log);
$ref eq 'ARRAY' or return html_page($ctx, 500, \$log);
my ($git, $oid, $type, $size, $di) = @$res;
return show_other($ctx, $res, \$log, $fn) if $type ne 'blob';