Understanding save-excursion

Understanding save-excursion

[Deniz Dogan]

Why isn't point and mark restored after calling this function?

(defun mark-paragraph-and-sort-lines ()
  (interactive "*")
  (save-excursion
    (mark-paragraph)
    (sort-lines nil (point) (mark))))

-- 
Deniz Dogan

Re: Understanding save-excursion

[David Kastrup]

Deniz Dogan <deniz.a.m.dogan@gmail.com> writes:

> Why isn't point and mark restored after calling this function?
>
> (defun mark-paragraph-and-sort-lines ()
>   (interactive "*")
>   (save-excursion
>     (mark-paragraph)
>     (sort-lines nil (point) (mark))))

What makes you think they aren't restored?  Point and mark are saved in
_pointers_, and pointers move along with text that is copied.

This would presumably do what you want if point was saved in a
rear-sticky pointer and mark in a front-sticky pointer.  Or just in
integers.

As it is, it is not all too clear what happens when you transfer
material to and from the boundaries of the region.

-- 
David Kastrup