Pressing `u` will undo all the stack.
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Description
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Is this a BUG REPORT or FEATURE REQUEST? (choose one):
This is a bug report
Environment:
- VSCode Version: 1.15.1
- VsCodeVim Version: 0.10.0
- OS: macos 10.12.6
What happened:
I press uin Normal mode in an editor window. Every single action in the undo stack was undone. Here's a GIF:

What did you expect to happen:
I expected the last action on the stack to be undone.
How to reproduce it:
I have no idea. I was reliably triggering the bug with the exact buffer I had but at some point it stopped doing it. Then it did it again.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by trying to reproduce the behavior in VSCode 1.15.1 with VSCodeVim 0.10.0 on macOS 10.12.6, using the reported Normal-mode u action. The issue names no files, tests, or entry points; the work is done when a reproducible cause is identified and u undoes only the last action.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100