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[PR #17879] Add support for resetting the color scheme with RIS #31391

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opened 2026-01-31 09:46:57 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:46:57 +00:00
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Original Pull Request: https://github.com/microsoft/terminal/pull/17879

State: closed
Merged: Yes

Summary of the Pull Request

This improves our RIS (hard reset) implementation, so it now also
resets any changes that are made to the color table and color aliases,
which is one of the things it's supposed to be doing.

References and Relevant Issues

This is also a small step towards implementing the OSC sequences that
reset individual color table entries (issue #3719).

Detailed Description of the Pull Request / Additional comments

The way this works is by having a second copy of the color table and
alias indices to hold the default values in the RenderSettings class.
This default set is initially populated at startup with the user's
chosen color scheme, but can also potentially be updated if the user
changes their settings while a session is already in progress.

When we receive an RIS request, we just copy the default values back
over the active settings, and refresh the renderer.

Validation Steps Performed

I've manually tested both OpenConsole and Windows Terminal by changing
my color scheme programmatically, and then confirming that the original
colors are restored when an RIS sequence is received.

I've also added some basic unit tests that check both the color aliases
and color table are restored by RIS.

PR Checklist

  • Tests added/passed
**Original Pull Request:** https://github.com/microsoft/terminal/pull/17879 **State:** closed **Merged:** Yes --- ## Summary of the Pull Request This improves our `RIS` (hard reset) implementation, so it now also resets any changes that are made to the color table and color aliases, which is one of the things it's supposed to be doing. ## References and Relevant Issues This is also a small step towards implementing the `OSC` sequences that reset individual color table entries (issue #3719). ## Detailed Description of the Pull Request / Additional comments The way this works is by having a second copy of the color table and alias indices to hold the default values in the `RenderSettings` class. This default set is initially populated at startup with the user's chosen color scheme, but can also potentially be updated if the user changes their settings while a session is already in progress. When we receive an `RIS` request, we just copy the default values back over the active settings, and refresh the renderer. ## Validation Steps Performed I've manually tested both OpenConsole and Windows Terminal by changing my color scheme programmatically, and then confirming that the original colors are restored when an `RIS` sequence is received. I've also added some basic unit tests that check both the color aliases and color table are restored by `RIS`. ## PR Checklist - [x] Tests added/passed
claunia added the pull-request label 2026-01-31 09:46:57 +00:00
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Reference: starred/terminal#31391
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