>   C-h k runs the command describe-key
 > which showed me
 >   C-x t runs the command jidanni-tidy-buffer
 >   which is an interactive compiled Lisp function in `/home/jidanni/.emacs.elc'.
 > But when I clicked that filename, I got
 >   find-library-name: Can't find library /home/jidanni/.emacs.el
 > Why of course. It's in .emacs, not .emacs.el.

Could you please test the attached patch (it should work regardless of
whether your dot-emacs file is called .emacs or .emacs.el).