bug#28874: display-line-numbers-mode and split window vertically

bug#28874: display-line-numbers-mode and split window vertically

[Konrad Podczeck]

Wth the pretest 26.0.90 version (for a Mac, obtained from https://emacsformacosx.com/builds), I observe the following:

(a) open a file with more than 10000 lines.

(b) turn on display-line-numbers-mode

(c) scroll down to the end of the buffer and the back to the beginning, so that you see only a part of the buffer where all line numbers have just two digits

(d) now do Menu>File>New Window Below

Then the range where the line numbers appear shrinks. Removing the split by middle-mouse clicking on the splitting mode-line makes that range increases again. For me, this behaviour is not convincing. Now do Menu>File>New Window Below another time and then in the lower half of the spilt scroll down, and you end up with two parts which have different with of the ranges showing the line numbers, which, for me, looks rather ugly.

bug#28874: display-line-numbers-mode and split window vertically

[Eli Zaretskii]

On October 17, 2017 2:53:15 PM GMT+03:00, Konrad Podczeck <konrad.podczeck@univie.ac.at> wrote:
> Wth the pretest 26.0.90 version (for a Mac, obtained from
> https://emacsformacosx.com/builds), I observe the following:
> 
> (a) open a file with more than 10000 lines.
> 
> (b) turn on display-line-numbers-mode
> 
> (c) scroll down to the end of the buffer and the back to the
> beginning, so that you see only a part of the buffer where all line
> numbers have just two digits
> 
> (d) now do Menu>File>New Window Below
> 
> Then the range where the line numbers appear shrinks. Removing the
> split by middle-mouse clicking on the splitting mode-line makes that
> range increases again. For me, this behaviour is not convincing. Now
> do Menu>File>New Window Below another time and then in the lower half
> of the spilt scroll down, and you end up with two parts which have
> different with of the ranges showing the line numbers, which, for me,
> looks rather ugly.

This is not a bug, but intended behavior.  If you don't like it, customize
display-line-numbers-grow-only to a non-nil value.

bug#28874: display-line-numbers-mode and split window vertically

[Konrad Podczeck]

Thanks for the reply and the information. With (setq display-line-numbers-grow-only t) the behaviour is fine for me.





> Am 17.10.2017 um 14:36 schrieb Eli Zaretskii <eliz@gnu.org>:
> 
> On October 17, 2017 2:53:15 PM GMT+03:00, Konrad Podczeck <konrad.podczeck@univie.ac.at> wrote:
>> Wth the pretest 26.0.90 version (for a Mac, obtained from
>> https://emacsformacosx.com/builds), I observe the following:
>> 
>> (a) open a file with more than 10000 lines.
>> 
>> (b) turn on display-line-numbers-mode
>> 
>> (c) scroll down to the end of the buffer and the back to the
>> beginning, so that you see only a part of the buffer where all line
>> numbers have just two digits
>> 
>> (d) now do Menu>File>New Window Below
>> 
>> Then the range where the line numbers appear shrinks. Removing the
>> split by middle-mouse clicking on the splitting mode-line makes that
>> range increases again. For me, this behaviour is not convincing. Now
>> do Menu>File>New Window Below another time and then in the lower half
>> of the spilt scroll down, and you end up with two parts which have
>> different with of the ranges showing the line numbers, which, for me,
>> looks rather ugly.
> 
> This is not a bug, but intended behavior.  If you don't like it, customize
> display-line-numbers-grow-only to a non-nil value.

bug#28874: display-line-numbers-mode and split window vertically

[Eli Zaretskii]

> From: Konrad Podczeck <konrad.podczeck@univie.ac.at>
> Date: Tue, 17 Oct 2017 21:14:41 +0200
> Cc: bug-gnu-emacs@gnu.org,
>  28874@debbugs.gnu.org
> 
> Thanks for the reply and the information. With (setq display-line-numbers-grow-only t) the behaviour is fine for me.

Thanks, I'm therefore closing the bug.