LEM 2.3.0 - tree-view-mode error. What is tree-view?

[aykaramba]

This is not an issue for me. I was exploring the any new features that I can find in 2.3.0 and I noticed tree-view-mode to see what it does and I get the following error:

What is tree-view-mode? How does it work? Is there anything in the screenshot that allows for any troubleshooting?

Thanks.

[vindarel]

seems to be the drawer/renderer for SDL2. tree-view-buffer and the commands tree-view-scroll-* are defined in frontends/sdl2/tree.lisp.

[aykaramba]

Aha. Interesting. Time to dig in further.

Thank you.