bug#3396: next-line and previous-line do not work correctly near long lines

[Jason Rumney]

Shannon Jones wrote:
> Hit C-p. This *should* put the cursor at the beginning of the line of X's.  
> Instead, it puts the cursor at the left column on the screen, but somewhere in 
> the middle of the line of X's.

This is intentional, see etc/NEWS under the heading "Editing Changes in 
Emacs 23.1".


> This is different from Emacs 22.  I noticed this when writing macros that do 
> something to one line, then move to the next line at the end macro to prepare 
> for the next run.  The macro failed on lines that were longer than my screen 
> width.
>   

The effect of this change on keyboard macros is currently being 
discussed on emacs-devel.