I'd like to run a hook for specific file extensions (i.e. not modes). I have zero experience with elisp, so I cargo-cult coded this:
(defun set_tab_mode ()
(when (looking-at-p "\\.cat")
(insert "OK")
(orgtbl-mode)))
(add-hook 'find-file-hook 'set_tab_mode)
(Should set orgtbl minor mode for files with suffix .cat and insert text "OK", i.e. it's not only a mode setting question). Unfortunately it does not work.