>  > It works fine, but if longlines-mode is active, then when file is been
>  > modified by external program, I get not only my message, but before it I
>  > get question in minibuffer "filename.txt changed on disk; really edit
>  > the buffer? (y, n, r or C-h)". Why? I want only my message. How to
>  > disable this question?
> 
> Can you try the attached patch?   It's against CVS Emacs hence
> if you have any problems applying it please tell me.
> 

I coud not apply patch:

 > patch --dry-run <longlines.patch
(Stripping trailing CRs from patch.)
patching file longlines.el
Hunk #1 succeeded at 121 (offset -15 lines).
Hunk #2 FAILED at 162.
Hunk #3 FAILED at 207.
Hunk #4 FAILED at 223.
3 out of 4 hunks FAILED -- saving rejects to file longlines.el.rej
 >
 >
 > patch --dry-run -F 30 <longlines.patch
(Stripping trailing CRs from patch.)
patching file longlines.el
Hunk #1 succeeded at 121 (offset -15 lines).
Hunk #2 succeeded at 162 with fuzz 3 (offset -15 lines).
Hunk #3 FAILED at 207.
Hunk #4 FAILED at 223.
2 out of 4 hunks FAILED -- saving rejects to file longlines.el.rej
 >
 >
 >

-- 
With best regards
Dmitry Bolshakov