Support for helix's 'X' (capital x) to select line extending upwards

[ghuh]

Currently Zed supports lower case 'x' to "Select entire line or multiple lines, extending downwards" which is great!

However, Helix's recommended defaults are to also have 'X' do the same thing, but going up.

Even if Zed doesn't enable it by default, it would be nice to have an option to map 'X' to have this behavior. I don't see any Zed key map actions that would enable this.

[ghuh]

Moved discussion to the Helix thread