Always escape grapheme extenders in str::escape_debug

[Jules-Bertholet]

This matches the behavior of impl Debug for str.

@rustbot label A-Unicode T-libs-api needs-fcp

[rustbot]

r? @Mark-Simulacrum

rustbot has assigned @Mark-Simulacrum.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

Why was this reviewer chosen?

The reviewer was selected based on:

• Owners of files modified in this PR: libs
• libs expanded to 12 candidates
• Random selection from Darksonn, JohnTitor, Mark-Simulacrum, clarfonthey, jhpratt

[Mark-Simulacrum]

I'll go ahead and kick off an FCP here, and cc @Manishearth (but I imagine your opinion here will match that given on the other PRs).

@rfcbot fcp merge libs-api

[rust-rfcbot]

@Mark-Simulacrum has proposed to merge this. The next step is review by the rest of the tagged team members:

• @Amanieu
• @BurntSushi
• @dtolnay
• @joshtriplett
• @the8472

No concerns currently listed.

Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

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[Manishearth]

Yes this is fine. But I don't want to keep reviewing minor changes like this: if @Jules-Bertholet wants to keep making changes like this I would prefer seeing a proposal with a holistic strategy.

[rust-rfcbot]

🔔 This is now entering its final comment period, as per the review above. 🔔

[rustbot]

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

[rust-rfcbot]

The final comment period, with a disposition to merge, as per the review above, is now complete.

As the automated representative of the governance process, I would like to thank the author for their work and everyone else who contributed.