Test: Toggle notebook output scrolling

[amunger]

Refs: #174951

• windows @bamurtaugh
• macOS @ulugbekna
• linux @connor4312

Complexity: 3

Authors: @amunger, @rebornix

Create Issue

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1. Create a new notebook file
2. Run a few cells with large outputs, examples below
3. while focused in a cell with large output, toggle the scrollability with the command Notebook: toggle scroll cell output, hotkey ctrl+k ctrl+y, and the link in the truncation message.
4. Use the settings link to find notebook output related settings and try to update them (changing the global scroll setting will determine how cells are initially rendered)

Some examples to try

Streaming output

Output will continuously update but is still able to toggle scrollability

import time
for i in range(200):
    time.sleep(.1)
    print(i)

Longer than the hard limit of 5000 lines

for i in range(5005):
    print(i)

[ulugbekna]

This is very cool!

hotkey ctrl+k ctrl+y

just a typo probably, but it seems to be ctrl+k y

[bamurtaugh]

I can't seem to get ctrl+k y or ctrl+k + ctrl y to work:

I'm using Jupyter pre-release v2023.4.1011171100. Am I missing something? The other methods (i.e. Notebook: toggle scroll cell output) work for me. Let me know if I should file an issue.