activate-mode-local-bindingsactivate-mode-local-bindings is a compiled Lisp function in `
mode-local.el'. (activate-mode-local-bindings &optional MODE) Activate variables defined locally in MODE and its parents. That is, copy mode local bindings into corresponding buffer local variables. If MODE is not specified it defaults to current `major-mode'. Return the alist of buffer-local variables that have been changed. Elements are (SYMBOL . PREVIOUS-VALUE), describing one variable.