When I turn on auto revert tail mode on a elfeed-log buffer I get error "buffer is not visiting file" in the mini buffer.
So now what?
I don't know elfeed-log, but my crystal ball suggests, in order:
tin the elfeed-log buffer and try step 1 again.
As the message says the elfeed-log buffer is not visting a file but it's automatically updated by elfeed itself
As a quick and dirty solution, this can be considered.
(add-hook 'after-change-functions (lambda (_b _e _len) (let ((my-window (get-buffer-window (current-buffer) t))) (set-window-point my-window (point))))) nil t)
Issued within the buffer.