Re: [Emacs-diffs] emacs-25 d7084f2: Fix todo-mode use of minibuffer completion keymap (bug#23695).

[Stefan Monnier]

> -  (let ((map minibuffer-local-completion-map))
> -    (define-key map " " nil)
> +  (let ((minibuffer-local-completion-map
> +         (copy-keymap minibuffer-local-completion-map)))
> +    (define-key minibuffer-local-completion-map " " 'self-insert-command)

Why bind it to `self-insert-command` rather than to nil?


        Stefan


PS: You can avoid copying with something like

  (let ((minibuffer-local-completion-map
         (let ((map (make-sparse-keymap)))
           (set-parent-keymap map minibuffer-local-completion-map)
           (define-key minibuffer-local-completion-map
                       " " 'self-insert-command))))