Using %X in $index_format

Hi, I am using "%4C %Z %?X?@& ? %{%b %d} %-15.15n (%?M?»%3M&%4c?) %s" as my $index_format. This works well with mutt, but with mutt-kz "%?X?@& ?" does not seem to work as expected. My goal with that bit was to show "@" when the message has an attachment and " " otherwise. I looked in init.h, the docs for $index_format seem to mention %X so I am not sure what I am doing wrong. Any ideas? If I wanted to fix this bug myself, which part of the source should I look at? It would be great if someone could point me in the right direction. Thanks, -- Suvayu Open source is the future. It sets us free.