Minor performance issue on shift + down, shift + up on includes

[Kornel Benko]

Am Mon, 22 Apr 2024 14:47:10 -0400
schrieb Scott Kostyshak <skostysh at lyx.org>:

> To reproduce:
> 
> 1. Move the attached file in the lib/docs directory.
> 2. Open the file.
> 3. Put the cursor before, e.g., the Additional.lyx include.
> 4. Press Shift + Down (or Shift + Up).
> 
> Result is that there is a small pause before the selection is finished.
> Subsequent presses extending the selection in the same direction are
> almost instantaneous, so it's just the first one.
> 
> In case it's hard to notice, you can try the following, after (3) hold
> shift and then press Down. After the selection gets to the bottom, keep
> holding shift but change from holding Down to holding Up. You'll notice
> that the cursor gets stuck for a small amount of time at the anchor
> point.
> 
> Strangely, I can reproduce if I select with Shift + Right, which also
> selects all of the insets. This surprised me, and maybe it provides a
> clue.
> 
> Can anyone reproduce?
> 
> Scott

Same here.

	Kornel
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