From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: Native display of line numbers, improved
Date: Mon, 26 Jun 2017 11:28:23 -0400 [thread overview]
Message-ID: <jwvd19q93ly.fsf-monnier+gmane.emacs.devel@gnu.org> (raw)
In-Reply-To: 83podqsst5.fsf@gnu.org
Hi Eli,
I don't understand your comment: Alex is referring here to the approach
used in nlinum, which I chose specifically to avoid having to scan the
whole buffer.
Basically, start with a small value of display-line-number-width, and if
during display we find that this value is too small to fit the largest
displayed line-number, we increase it. So when you open a very large
buffer (but where only the first 60 lines are displayed), only 2 columns
will be used for line-numbers since "it's been enough so far"; if you
move to line 2000 and back, we'll now be using 4 columns (even though
2 would be sufficient). This means that column 0 does sometimes change,
but fairly rarely (only when you move to a line number with more digits
than what you've visited so far).
Stefan
>> >> 1. An option to never dynamically shrink 'display-line-number-width'
>> >> while still dynamically growing. I dislike having column 0 constantly
>> >> changing, so an option to only grow the width dynamically like in
>> >> (n)linum would be very appreciated.
>> >
>> > How is growing different from shrinking? Just wondering.
>>
>> Growing is necessary in the case where the width of the new line(s)
>> exceeds the current 'display-line-number-width'. Of course that can
>> be worked around by setting 'display-line-number-width' to a
>> sufficiently large number, but I would like it to be no larger than what
>> it needs to be for the current text in the buffer.
> You could do that by counting lines in the buffer in some suitable
> hook, and then setting the value of 'display-line-number-width'
> accordingly, right?
> My point is that doing what you want requires counting lines in the
> entire buffer, something that could take a considerable time. So
> doing that in the display code when people who'd like that could set
> that up for them using the existing facilities sounds uneconomical.
next prev parent reply other threads:[~2017-06-26 15:28 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-24 17:27 Native display of line numbers, improved Eli Zaretskii
2017-06-24 18:40 ` Clément Pit-Claudel
2017-06-24 18:51 ` Eli Zaretskii
2017-06-24 20:53 ` Stephen Berman
2017-06-25 14:07 ` Eli Zaretskii
2017-06-25 14:34 ` Stephen Berman
2017-06-25 15:10 ` Eli Zaretskii
2017-06-25 15:41 ` Stephen Berman
2017-06-25 16:02 ` Eli Zaretskii
2017-06-25 19:00 ` Stephen Berman
2017-06-24 21:23 ` Stephen Berman
2017-06-25 14:03 ` Eli Zaretskii
2017-06-25 14:34 ` Stephen Berman
2017-06-25 14:57 ` Eli Zaretskii
2017-07-17 22:20 ` line-number-mode at EOB (was: Native display of line numbers, improved) Stephen Berman
2017-07-18 4:16 ` line-number-mode at EOB Stefan Monnier
2017-07-18 14:04 ` Stephen Berman
2017-07-18 14:30 ` Stefan Monnier
2017-07-18 14:51 ` Eli Zaretskii
2017-07-18 15:04 ` Stefan Monnier
2017-07-20 20:25 ` Paul Eggert
2017-07-20 20:43 ` Stephen Berman
2017-07-20 21:19 ` Paul Eggert
2017-07-20 21:35 ` Stephen Berman
2017-07-18 14:55 ` line-number-mode at EOB (was: Native display of line numbers, improved) Eli Zaretskii
2017-07-18 16:33 ` line-number-mode at EOB Stephen Berman
2017-07-18 19:03 ` Eli Zaretskii
2017-07-18 20:38 ` Stephen Berman
2017-06-25 9:59 ` Native display of line numbers, improved martin rudalics
2017-06-25 13:54 ` Eli Zaretskii
2017-06-25 15:58 ` martin rudalics
2017-06-25 20:30 ` Alex
2017-06-26 2:39 ` Eli Zaretskii
2017-06-26 3:43 ` Alex
2017-06-26 3:50 ` Alex
2017-06-26 14:58 ` Eli Zaretskii
2017-06-26 19:41 ` Alex
2017-06-27 14:25 ` Eli Zaretskii
2017-06-29 20:25 ` Native line numbers column disappears at times Kaushal Modi
2017-06-30 6:00 ` Eli Zaretskii
2017-07-10 18:53 ` Kaushal Modi
2017-07-10 19:31 ` Eli Zaretskii
2017-07-10 20:56 ` Kaushal Modi
2017-06-26 14:54 ` Native display of line numbers, improved Eli Zaretskii
2017-06-26 15:28 ` Stefan Monnier [this message]
2017-06-26 15:56 ` Eli Zaretskii
2017-06-26 16:12 ` Stefan Monnier
2017-06-26 16:26 ` Eli Zaretskii
2017-06-26 19:36 ` Alex
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