Hi,

   I found a bug with undo and selection. While putting together a simple recreate, I also found a buglet involving A-left/A-right on plain lists. First I'll describe the list bug. If you have a plain list before the first heading you can't use A-left or A-right to promote or demote list items. So given the file:

==== test 1 =========

- Stooge
    - moe
    - larry
    - curly

==================

If you got to the line with moe on it and use A-left to promote it I would expect to see

===== test 1 prime =======

- Stooge
   - moe
    - larry
    - curly

======================

It doesn't work because it's before the first heading. Not a big deal, but I though I'd mention it.

The second is more of an issue for someone like me who tends to live by undo and is also sloppy about have a selection. Given the file

==== test 2 =========

* brilliant
- Stooge
    - moe
    - larry
    - curly

==================

Now go to the line with moe and press A-left twice to get the file: (note: moe indented twice. larry and curly indented once)

==== test 2 prime ====

* brilliant
- Stooge
- moe
   - larry
   - curly

=================

Now select the region containing lines with moe and larry using what ever method you like. (The mouse is easy.) Do two undos. I would expect it to undo both promotes, restoring the file back to its contents in test 2. Instead I get: (curly never got demoted)

==== test 2 double prime ====

* brilliant
- Stooge
    - moe
    - larry
   - curly

========================

I'm assuming that regional undos are not a feature I'm unfamiliar with. This is with emacs 21.2.1 on cygwin running org 4.69a. I've seen similar on 21.1.1 on AIX and an older version org.

Edd