GNU bug report logs - #72830
Big rectangular selections are slow

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From: Po Lu <luangruo <at> yahoo.com>
To: Mattias Engdegård <mattias.engdegard <at> gmail.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 72830 <at> debbugs.gnu.org, Stefan Monnier <monnier <at> iro.umontreal.ca>, juri <at> linkov.net
Subject: bug#72830: Big rectangular selections are slow
Date: Thu, 29 Aug 2024 08:45:19 +0800

Mattias Engdegård <mattias.engdegard <at> gmail.com> writes:

> It's pretty bonkers, yes. There is even a noticeable slow-down with a
> single contiguous selection.  Fortunately the cure is easy.
>
>> I thought the extraction of the region's content to put it into PRIMARY
>> and friends happened more lazily (e.g. when another application
>> requests the PRIMARY/CLIPBOARD, or when we deactivate the region).
>
> That would indeed have made some kind of sense. If confined to X11,
> that is. And opt-in, even then.

No well-written X program of the past 30 years does not export its
selected text as the primary selection, and users of free desktops are
long accustomed to its existence, with the result that Wayland desktops
implement primary selections by a number of protocols.  This is simply
not an option.

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