Re: fill-paragrapch set the buffer to changed when there is none

[Lennart Borgman]

Richard Stallman wrote:
>     If you do fill-paragraph on a paragraph that is already filled in an 
>     Elisp buffer there is an undo entry added and the buffer is set to 
>     modified. Is that correct?
>
> It would be better to avoid modifying the buffer.  This has not been
> implemented because it isn't trivial to do.
>   
Would it be possible to just set the modified flag correctly? Can the 
undo list be truncated?