Add persistent undo

[Tobbe]

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Is this a BUG REPORT or FEATURE REQUEST? (choose one):
Feature request

Please implement persistent undo, like what you get when you have set undofile in vim. Being able to undo in a file even if you've closed it first and then reopened it (even when rebooting between closing and reopening) is very convenient 😃

[Chillee]

I'm not sure this is actually possible. Does VSCode allow extensions to persist data in this fashion?

@rebornix @johnfn @xconverge

[johnfn]

You can always save to a file somewhere right?

[aliev]

would be great to have this feature!

You can always save to a file somewhere right?

the same in Vim, there is undodir option: https://github.com/aliev/vimrc/blob/master/plugin/vimrc.vim#L118

[tuxflo]

Persistent undo is one of the best vim/neovim features at all. It would be great to have something like that in VS Code.
Since we already have a neovim integration maybe it could be possible to let neovim take care of saving the undofiles?

[haifengkao]

I think we can make persistent undo by modifying local-history and remap the undo and redo key.

We only need a brave hero to implement it

[iansinnott]

This feature is so useful and even vital once you start using it that it might make sense if it was implemented in VSCode regardless of plugins. It would be a big win for all VSCode users.

[dbanks12]

Any progress on this?

[garrisonz]

I am also looking for this feature....

[musjj]

Persistent undos would be a lifesaver. This is one of the features that I most sorely miss from vim.