RFC: Jump and focus to a previous/next cell by some keyboard shortcut (<C-o><C-o> ?)

[rsdenijs]

When I am working I often realize i need to do some import.
Then i scroll up (ctrl-o, gg), add the import and go want to go back to the previous cell with some shortcut. Is there any way to achieve something similar? Maybe through cell markers?

[lambdalisue]

It would be really nice feature thanks ;-) I often face similar situation as well.

The following is just an idea, what do you think about it

• Record the history of which cell user was in by focus or blur event
• Jump forward/backward the history and focus the cell by <C-o><C-i> and <C-o><C-o> like <C-i> and <C-o> jumps in a native Vim.

If I implement that feature, what you need to do is just hit <C-o><C-o> after.

It would be a bit hard to implement while I need to consider how to handle history correctly so please wait or send me a PR ;-)

[rsdenijs]

So to jump 2 steps in history we would do <C-o><C-o>, <C-o><C-o> ? In a bit more general setting, would it make sense to use cell metadata to store history/markers? Then they would even work after reloading. Going to cell with marker 'a' could then be <C-o> ' a.

[lambdalisue]

Sorry for late reply.

So to jump 2 steps in history we would do , ?

I think <C-o><C-o> + <C-o><C-o>

In a bit more general setting, would it make sense to use cell metadata to store history/markers? Then they would even work after reloading. Going to cell with marker 'a' could then be ' a.

I agree that it would be nice but the problem is it is a bit difficult to implement while there is no such feature in CodeMirror/Jupyter. That's why I just hit an idea which I explained.

[rsdenijs]

Sorry I missed the code block in my last comment, i was expecting that key sequence exactly.

Ok now I understand that keeping a history of cells might be tricky. I would like to learn a bit more about how the javascript of Jupyter works. Do you know of a good place to get started?

[lambdalisue]

Sorry I missed the code block in my last comment, i was expecting that key sequence exactly.

I see ;-)

Ok now I understand that keeping a history of cells might be tricky. I would like to learn a bit more about how the javascript of Jupyter works. Do you know of a good place to get started?

No. I learned that from the code of Jupyter itself. But it is quite clear so I'm sure that you will get the image pretty soon by reading the source code ;-)