set unused segments to black

[DedeHai]

0.15.1 introduced a new behaviour on how "empty space" is treated. While it is technically correct, it is not user friendly and is a breaking change: all previous versions behaved differently and so does 0.16.

What this change does is to set any unused pixels to black instead of keeping the last value.

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[softhack007]

looks reasonable. I agree its better to set the previous segment to "black", so to avoid orphaned pixels that stay on the LEDs until the bus driver gets re-initialized.