redirect non-existing directory request to that directory with file name appended

[Matthew Smith <chedderslam@xxxxxxxxx>]

Right now I have this:

RewriteCond %{REQUEST_FILENAME} !-d

RewriteCond %{REQUEST_FILENAME} !-f

RewriteRule . /index.cfm [L]

Which works, but does not do what I want

Rather than redirecting to the root index.cfm, I would like to have it directed to the nonexistent directory with "\index.cfm" appended.  Sounds weird, I know, but this will trigger the onMissingTemplate component in coldfusion, rather than giving me the standard apache 404.

so /directory/item-1/ should go to /directory/item-1/index.cfm

Thank you.