Change "expanded" icon in treeview from downwards-looking-arrow to left-top-corner

[schlichtanders]

Having the tight treeview layout is awesome for saving place. Here a supereasy but powerful change to make the tiny layout even more readable.

Currently the layout uses the downwards-looking-arrow if a section is expanded.

My suggestion with a left-top-corner icon looks like so

At least for me, this so much better readable ;-)

VSCode version: 1.41.1

[aeschli]

product icons will be user customizable with #92791

[schlichtanders]

thanks @aeschli

nice to have this customaizable, but don't you think that would also be a good default?

One of the big advantages of vscode is that it comes with very good defaults, hence I be glad if we can reopen this ticket.

[aeschli]

Assigning to @misolori

[miguelsolorio]

Thanks for the suggestion. We used to use the angled tree icon:

But I don't think I've ever seen an example like your screenshot shows. I would say that this still falls under product icon customization (see #79130) as it comes down to personal preference since everyone has their own interpretation of what "good" means for icons. Will close this as duplicate.