From: Juri Linkov <juri@linkov.net>
To: Antoine Levitt <antoine.levitt@gmail.com>
Cc: 25751@debbugs.gnu.org
Subject: bug#25751: Query replace lazy highlighting
Date: Thu, 16 Feb 2017 23:01:28 +0200 [thread overview]
Message-ID: <87wpcpx32v.fsf@localhost> (raw)
In-Reply-To: <87mvdmxoig.fsf@lambda> (Antoine Levitt's message of "Thu, 16 Feb 2017 14:18:31 +0100")
> When query-replacing and confirming, matches get unhighlighted, and then
> highlighted again, which is very distracting. E.g. open a file, M-% a ->
> a, y, other matches of a get unhighlighted then highlighted again.
>
> (setq lazy-highlight-initial-delay 0) (shouldn't it be default by the
> way, at least on graphical displays?) reduces the problem but does not
> eliminate it (it produces small flickers). There's
> lazy-highlight-cleanup, but that disables cleanup completely, which I
> don't want.
>
> Can't this be eliminated?
The reason why it works this way is because lazy-highlight is not yet
optimized to handle changes: it needs to dehighlight the replaced text,
and to add highlighting in the new replacing text after every replacement.
I see no simpler solution than to write a new function with a name like
‘isearch-lazy-highlight-update-in-region’ that given the region boundaries
of the last replacement will rehighlight matches in that region.
next prev parent reply other threads:[~2017-02-16 21:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-16 13:18 bug#25751: Query replace lazy highlighting Antoine Levitt
2017-02-16 21:01 ` Juri Linkov [this message]
2017-02-16 22:45 ` Juri Linkov
2017-02-17 6:37 ` Eli Zaretskii
2017-02-17 22:52 ` Juri Linkov
2017-02-18 8:13 ` Eli Zaretskii
2017-02-18 23:17 ` Juri Linkov
2017-02-18 23:51 ` Drew Adams
2017-02-20 0:30 ` Juri Linkov
2017-02-21 23:22 ` Juri Linkov
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