Tracking issue for format_args_capture · Issue #67984 · rust-lang/rust · GitHub

10000 Tracking issue for format_args_capture · Issue #67984 · rust-lang/rust · GitHub

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Tracking issue for format_args_capture #67984
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Tracking issue for format_args_capture#67984
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A-fmtArea: `core::fmt`B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFC F-format_implicit_argsimplicit arguments for format strings (RFC 2795)Libs-TrackedLibs issues that are tracked on the team's project board.T-langRelevant to the language team T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.
Description
nikomatsakis
opened on Jan 7, 2020
This is a tracking issue for the RFC 2795 (rust-lang/rfcs#2795).

Steps:

Checklist for the tracking issue:

Steps:

Implementation for format_args! behind format_implicit_args feature (name to be bikeshed?)

Implement alternative solution for format_args!(concat!(...)) case that doesn't risk spurious macro hygiene

Implementation for panic!. Behind feature gate and / or edition switch (see unresolved question) Tracking Issue for RFC 3007: Making core and std's panic identical in Rust 2021 #80162

Adjust documentation (see instructions on rustc-guide)

Stabilization PR (see instructions on rustc-guide)

Unresolved Questions:

Solution for format_args!(concat!(...)) - perhaps try out a new unstable macro as per this comment - Resolved by Tracking issue for format_args_capture #67984 (comment)

Final design of the panic! solution - Solved by rfc 3007

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A-fmtArea: `core::fmt`B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFC F-format_implicit_argsimplicit arguments for format strings (RFC 2795)Libs-TrackedLibs issues that are tracked on the team's project board.T-langRelevant to the language team T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.
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