bug#30834: 27.0.50; posn-at-point and display-line-numbers-mode

[Andreas Röhler]

On 16.03.2018 17:19, Sebastien Chapuis wrote:
> > In use here:
> >
> > (defun ar-count-lines (&optional beg end)
> >    "Count lines in accessible part of buffer.
> >
> > See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=7115";
> >    (interactive)
> >    (let ((beg (or beg (point-min)))
> >         (end (or end (point)))
> >         erg)
> >      (if (bolp)
> >         (setq erg (1+ (count-lines beg end)))
> >        (setq erg (count-lines beg end)))
> >      (when (called-interactively-p 'any) (message "%s" erg))
> >      erg))
>
> Sorry, I forgot to mention that the interesting value is the X position.
> Is it still related to count-lines ?
>
> --
> Sebastien Chapuis

Sorry, my fault. Referred to a bug in count-lines, which occurs at BOL.

As its docu says, the return value may differ: "but can be one more if 
START is not equal to END and the greater of them is not at the start of 
a line."

Seems unrelated here.