Multi-mode Vim support like Jupyterlab-Vim

[anjiro]

Description

Jupyterlab-Vim adds a "Jupyterlab Command Mode" which enables manipulation at the cell level. It's super nice and I'd love to see it implemented in Marimo.

Suggested solution

Here's what Jupyterlab-Vim lists (copied verbatim):

---

Please note that all keys are lowercase unless Shift is explicitly indicated. For example, Y, Y is two lowercase ys, Shift-Y, Y is one uppercase Y followed by a lowercase y.

Shortcuts this extension introduces:

Vim Ex commands

Command	Action
:w[rite]	Save Notebook
:q[uit]	Enter Jupyter command mode

Vim command bindings

Chord	Action
Ctrl-O, U	Undo Cell Action
-	Split Cell at Cursor
Ctrl-O, -	Split Cell at Cursor
Ctrl-O, D	Cut Cell
Ctrl-O, Y	Copy Cell
Ctrl-O, P	Paste Cell
Ctrl-Shift-J	Extend Marked Cells Below
Ctrl-Shift-K	Extend Marked Cells Above
Ctrl-O, O	Insert Cell Below
Ctrl-O, Ctrl-O	Insert Cell Above
Ctrl-J	Select Cell Below
Ctrl-K	Select Cell Above
Ctrl-O, G	Select First Cell
Ctrl-O, Ctrl-G	Select Last Cell
Ctrl-E	Move Cell Down
Ctrl-Y	Move Cell Up
Ctrl-O, Z, Z	Center Cell
Ctrl-G	Show Tooltip
Command/Ctrl-1	Code Cell Mode
Command/Ctrl-2	Markdown Cell Mode
Command/Ctrl-3	Raw Cell Mode
Shift-Escape	Leave Vim Mode
Escape, Ctrl-[	Exit Vim Insert Mode

Jupyter command bindings

Chord	Action
G, G	Select First Cell
Shift-G	Select Last Cell
D, D	Delete Cell
Y, Y	Yank (Copy) Cell
P	Paste Cell
Shift-P	Paste Cell Above
O	Insert Cell
Shift-O	Insert Cell Above
U	Undo Cell Action
Ctrl-E	Move Cells Down
Ctrl-Y	Move Cells Up
Z, Z	Center Cell
Z, C	Hide Code Cell
Z, O	Show Code Cell
Z, M	Hide All Code Cells
Z, R	Show All Code Cells

Alternative

No response

Additional context

No response

[akshayka]

Thanks for the feature request! I've used these bindings in the past, and they are nice.

Unfortunately we likely won't get to this soon, just because of a backlog of other tasks ahead of us. But I will keep this open for the future, and so that others can :+1: it if they'd also like to see these bindings implemented.