Introduce switchSelectionEndpoint action

[carlos-zamora]

Summary of the Pull Request

Introduces the switchSelectionEndpoint action which switches whichever selection endpoint is targeted when a selection is present. For example, if you are targeting "start", switchSelectionEndpoint makes it so that now you are targeting "end". This also updates the selection markers appropriately.

References

Spec - #5804
#13358
Closes #3663

Detailed Description of the Pull Request / Additional comments

Most of the code is just standard code of adding a new action. Other than that, we have...

• if there is no selection, the action fails and the keybinding is passed through (similar to copy())
• when we update the selection endpoint, we need to also update the "pivot". This ensures that future calls of UpdateSelection() respect this swap.
• [Corner Case] if the cursor is being moved, we make it so that you basically "anchored" an endpoint and you don't have to hold shift anymore.

[DHowett]

@msftbot merge this in 18 hours

[ghost]

Hello @DHowett!

Because you've given me some instructions on how to help merge this pull request, I'll be modifying my merge approach. Here's how I understand your requirements for merging this pull request:

• I won't merge this pull request until after the UTC date Fri, 01 Jul 2022 17:38:42 GMT, which is in 18 hours

If this doesn't seem right to you, you can tell me to cancel these instructions and use the auto-merge policy that has been configured for this repository. Try telling me "forget everything I just told you".

[carlos-zamora]

Suggestion for me:

• a gentle rename on shouldMoveCursor (should mean shouldMoveBothSelectionEndpoints) and anchorSelectionEndpoint (it means something like, "anchor WHICH endpoint we are moving")

[DHowett]

@msftbot merge this in 4 minutes

[ghost]

Hello @DHowett!

Because you've given me some instructions on how to help merge this pull request, I'll be modifying my merge approach. Here's how I understand your requirements for merging this pull request:

• I won't merge this pull request until after the UTC date Fri, 01 Jul 2022 01:22:48 GMT, which is in 4 minutes

If this doesn't seem right to you, you can tell me to cancel these instructions and use the auto-merge policy that has been configured for this repository. Try telling me "forget everything I just told you".

[ghost]

🎉Windows Terminal Preview v1.15.186 has been released which incorporates this pull request.:tada:

Handy links:

• Release Notes
• Store Download

[penguin359]

Chocolatey is still on 1.14.2281.0 for Windows Terminal so waiting for 1.15.x to come down the pipe.