bug#24725: 25.1.50; vc-region-history may exceed max line number of file in repository

[Dmitry Gutov]

Hi!

On 18.10.2016 17:27, Tino Calancha wrote:
> emacs -Q lisp/vc/vc.el
> C-x h
> M-x vc-region-history RET
> fatal: file vc.el has only 2921 lines
> ;; vc.el has 2922 lines but Git ignores the last empty line.

With your patch, what will happen if the file does not end with a 
newline (which can be some people's or tools' preference)?

Currently, in that case the above scenario works fine. Maybe we need a 
different check, rather than substracting.

Or try (line-number-at-pos (1- (point-max))) instead of (1- 
(line-number-at-pos (point-max))).