Re: [PATCH] New command `outline-narrow-to-subtree'

[Bastien]

Hi Leo,

Leo <address@hidden> writes:

> We add an interface function narrow-to-subtree which is bound globally
> to C-x n s.
>
> (defvar narrow-to-subtree-function nil
>   "Function to call to narrow to a subtree.")
>
> (defun narrow-to-subtree ()
>   (interactive)
>   (if (functionp narrow-to-subtree-function)
>       (funcall narrow-to-subtree-function)
>     (error "Don't know how to narrow to a subtree in current buffer")))
>
> then outline-mode, allout, org-mode and others can each provide its
> specific narrow-to-subtree-function.

I see how this solution would add the ̀narrow-to-subtree' command to the
narrow-map -- but what is a "subtree" outside org-mode and outline-mode?

If we add outline-narrow-to-subtree, then we have all we we need for Org
and outline-mode.

The question is then: does `narrow-map' need to know about every
narrow-to-* functions that mode can define for themselves?

I'd be curious about people's input.

-- 
 Bastien