In Emacs (23.4.1), how do I enable a minor mode (e.g. auto-fill-mode) for all files in a major mode (e.g. text-mode) under a directory (recursively)?
It doesn't look like directory-local variables can do ths, but I might be wrong.
You should use a text-mode hook. In your .emacs file:
Replace /home/foo/bar/blat with the path to the directory whose files you want to have auto-fill-mode enabled in when visited. Don't remove the caret.