Been using Emacs 24 for more than an year, but not an expert. Following this answer I installed emacs25 from Kevin Kelly's repo. I haven't configured anything on this version yet and I still get an error message saying "Use font-lock-support-mode rather than calling lazy-lock-mode" every time I do
M-x. Can someone explain this error and what to do about it?
I tried going to the customize menu and set value of font-lock-support-mode from "mode-specific" to "lazy-lock", but I couldn't save the changes beyond that session.