Tracking Issue for --error-format=human-unicode #148607

About tracking issues

Tracking issues are used to record the overall progress of implementation.
They are also used as hubs connecting to other relevant issues, e.g., bugs or open design questions.
A tracking issue is however not meant for large scale discussion, questions, or bug reports about a feature.
Instead, open a dedicated issue for the specific matter and add the relevant feature gate label.
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Steps

• Implementation
• Adjust documentation (see instructions on rustc-dev-guide)
• Stabilization PR (see instructions on rustc-dev-guide)

Unresolved Questions

• What should the CLI be for this? See also Tracking issue for -Zterminal-urls #125586

Implementation history

• Add Unicode block-drawing compiler output support #126597
• feat: Add unstable rustc-unicode flag cargo#16243