From: Juri Linkov <juri@linkov.net>
To: Drew Adams <drew.adams@oracle.com>
Cc: 21092@debbugs.gnu.org
Subject: bug#21092: 25.0.50; Option `lazy-highlight-max-at-a-time' does not work
Date: Thu, 03 Sep 2015 01:40:10 +0300 [thread overview]
Message-ID: <87bndka1it.fsf@mail.linkov.net> (raw)
In-Reply-To: <e6087774-d809-4b4e-9343-c7937f170ef3@default> (Drew Adams's message of "Tue, 1 Sep 2015 17:07:11 -0700 (PDT)")
>> I tried to find a useful application for this feature, and finally found.
>
> Great. What's the application?
Reducing flicker.
>> > Whole buffer OR rest-of-buffer forward or backward. Au choix.
>> > Both behaviors are useful.
>>
>> Since you can scroll up or down, highlighting the whole buffer is
>> unavoidable.
>
> I don't understand. Can you elaborate a bit?
With ‘isearch-allow-scroll’ you can scroll backwards to previous
parts of the buffer that need to display highlighted matches too.
>> > A second question concerns how to control whether this acts
>> > only in the current search direction or in both directions.
>>
>> We can highlight only in the search direction because regexp
>> search might match different results depending on direction.
>> So you need to switch directions with ‘C-r’ to re-highlight
>> the buffer.
>
> You just said that "highlighting the whole buffer is unavoidable",
> so I am a bit confused. Now you seem to be saying that we can
> highlight only in one direction at a time. Maybe you could
> elaborate a bit here?
Highlighting the whole buffer needs to be in the same direction
as the current search direction. But ‘isearch-lazy-highlight-update’
already takes care about this.
> The difference is that I did not change the occurrences of
> `window-(start|end)' in `isearch-lazy-highlight-new-loop'.
> I wasn't sure it was needed (not fully understanding it),
> and I didn't notice a problem without it.
You can see the difference when scrolling by one line
with e.g. ‘scroll-down-line’.
next prev parent reply other threads:[~2015-09-02 22:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <<9e1b9e19-6a1e-4241-a3e6-2876509e1423@default>
[not found] ` <<7245a30d-355a-425e-b19b-1c9ecc5e94e3@default>
[not found] ` <<83lhcv4wp4.fsf@gnu.org>
2015-08-28 15:19 ` bug#21092: 25.0.50; Option `lazy-highlight-max-at-a-time' does not work Drew Adams
2015-08-28 15:46 ` Eli Zaretskii
2015-08-28 21:14 ` Juri Linkov
2015-08-28 21:43 ` Drew Adams
2015-08-29 7:07 ` Eli Zaretskii
[not found] ` <<56e13714-27a7-47f9-93df-299b4a25457d@default>
[not found] ` <<83wpwf2z6m.fsf@gnu.org>
2015-08-28 15:59 ` Drew Adams
2015-08-28 16:03 ` Eli Zaretskii
[not found] ` <<e4ec2bca-0db5-43ba-a100-e99601d39e4c@default>
[not found] ` <<83twrj2ye6.fsf@gnu.org>
2015-08-28 16:15 ` Drew Adams
2015-08-28 16:44 ` Drew Adams
2015-08-28 16:59 ` Drew Adams
[not found] ` <<87si73dsjt.fsf@mail.linkov.net>
[not found] ` <<b0d4a886-77ae-4b58-b1b8-3b15999f5052@default>
[not found] ` <<83pp26373z.fsf@gnu.org>
2015-08-29 14:42 ` Drew Adams
2015-08-29 21:10 ` Juri Linkov
2015-08-30 2:40 ` Eli Zaretskii
2015-08-30 5:39 ` Drew Adams
2015-08-30 20:58 ` Juri Linkov
2015-08-30 22:39 ` Drew Adams
2015-08-31 20:01 ` Juri Linkov
2015-08-31 21:35 ` Drew Adams
2015-09-01 22:55 ` Juri Linkov
2015-09-02 0:07 ` Drew Adams
2015-09-02 22:40 ` Juri Linkov [this message]
2015-12-24 0:47 ` Juri Linkov
2017-02-22 0:16 ` Juri Linkov
2015-07-19 13:36 Drew Adams
2015-08-27 20:29 ` Drew Adams
2015-08-28 8:57 ` Eli Zaretskii
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