Scroll in "less" only jumps a single line

[CendioOssman]

Details

• VScode version: 1.93.1
• OS version: RHEL 9

Steps to reproduce

1. less file.txt
2. Scroll mouse one click

Expected outcome

File scrolls the same 3 lines you get in the scrollback buffer, or as commonly seen in almost all other terminals.

Actual outcome

File scrolls a single line.

Additional details

If I do an strace of less, I can see the other terminals send three \33OB on one mouse scroll click, whilst xterm.js only sends the one. Which fully explains things.

I couldn't find any setting in vscode that affected this. Workarounds are welcome.

[CendioOssman]

Note that it might be relevant if high-resolution scrolling is supported or not. I'm only seeing this in a VNC environment that only has the classical "stepped" wheel events.