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

From: Andreas Röhler <[email-masked]>
Date: Fri, 16 Mar 2018 22:41:10 +0100

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.