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[PR #3934] Ctrl+Backspace works, and two other small fixes #25564

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opened 2026-01-31 09:10:19 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:10:19 +00:00
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Original Pull Request: https://github.com/microsoft/terminal/pull/3934

State: closed
Merged: No

Summary of the Pull Request

Changes the Ctrl+Backspace input sequence and how it is processed by InputStateMachineEngine. Now Ctrl+Backspace deletes a whole word at a time (tested on WSL, CMD, and PS).

PR also fixes two other issues which just needed some someone to implement them.

References

PR Checklist

  • Closes #755, #3447, Emacs cursor displayed incorrectly (#3720)
  • CLA signed. If not, go over here and sign the CLA
  • Tests added/passed
  • Requires documentation to be updated
  • I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #755

Detailed Description of the Pull Request / Additional comments

Changed the input sequence for Ctrl+Backspace to \x1b\x8 so the sequence would pass through _DoControlCharacter. Changed _DoControlCharacter to process \b in a way which forms the correct INPUT_RECORDs to delete whole words.

Fixed #3447 by verifying that COORD X,Y values are positive.
Fixed #3720 by wrapping the at call in a try-catch.

Validation Steps Performed

Ctrl+Backspace works 🎉
Can no longer repro #3720

**Original Pull Request:** https://github.com/microsoft/terminal/pull/3934 **State:** closed **Merged:** No --- <!-- Enter a brief description/summary of your PR here. What does it fix/what does it change/how was it tested (even manually, if necessary)? --> ## Summary of the Pull Request Changes the <kbd>Ctrl+Backspace</kbd> input sequence and how it is processed by `InputStateMachineEngine`. Now <kbd>Ctrl+Backspace</kbd> deletes a whole word at a time (tested on WSL, CMD, and PS). PR also fixes two other issues which just needed some someone to implement them. <!-- Other than the issue solved, is this relevant to any other issues/existing PRs? --> ## References <!-- Please review the items on the PR checklist before submitting--> ## PR Checklist * [x] Closes #755, #3447, #3720 * [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA * [ ] Tests added/passed * [ ] Requires documentation to be updated * [x] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #755 <!-- Provide a more detailed description of the PR, other things fixed or any additional comments/features here --> ## Detailed Description of the Pull Request / Additional comments Changed the input sequence for <kbd>Ctrl+Backspace</kbd> to `\x1b\x8` so the sequence would pass through `_DoControlCharacter`. Changed `_DoControlCharacter` to process `\b` in a way which forms the correct `INPUT_RECORD`s to delete whole words. Fixed #3447 by verifying that `COORD` X,Y values are positive. Fixed #3720 by wrapping the `at` call in a try-catch. <!-- Describe how you validated the behavior. Add automated tests wherever possible, but list manual validation steps taken as well --> ## Validation Steps Performed <kbd>Ctrl+Backspace</kbd> works 🎉 Can no longer repro #3720
claunia added the pull-request label 2026-01-31 09:10:19 +00:00
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Reference: starred/terminal#25564
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