Live preview on focus in File Finder

[wouterken]

The ability to immediately preview focused files behind the File Finder, without having to actually select the file (at which point the dialog closes and you lose your filter) is a great ST feature that I miss in Zed.

It's especially useful in large repositories where you have many files that share the same name, and you want a quick glimpse of what's in the focused file, to confirm your selection. (e.g. think common files like test.rs in the Zed repo.)

I’ve put together a simple implementation of this in my fork, which reuses preview tab functionality, and allows you to opt into this preview behavior on File Finder focus.

I've seen this request has been previously raised as an issue here:

• Palette File Navigation - Preview File Content #8626

And a similar (but not quite the same) function raised for discussion here

• Preview file content in file finder #31911

I've not noticed any PRs attempting to implement this (but could easily have missed it!)

Demo below:

Would love to hear feedback on whether it'd be possible to get a change like this merged into Zed.
More than happy to open a PR if it's something you'd consider incorporating.