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

[Richard Kimberly Heck]

On 4/22/24 14:47, Scott Kostyshak wrote:
> 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?

This is with or without the biginset stuff?

Riki