Re: longlines-show-hard-newlines sets modified flag

[martin rudalics]

> Indeed, if you do want to update the mode-line, then you might as well
> use set-buffer-modified-p, but then please add a short comment about it,
> like
>
>   (set-buffer-modified-p mod)   ; and update the mode line.

I was talking about the three remaining `set-buffer-modified-p's
in longlines.el.  All these may add or remove newlines and thus
change line and/or column numbers.  The two you bemoaned
initially will be changed to `restore-buffer-modified-p'.