Feature gate: #![feature(fmt_arguments_from_str)]

This is a tracking issue for core::fmt::Arguments::from_str(), which converts a &'static str to a fmt::Arguments.

Public API

// core::fmt impl<'a> Arguments<'a> { pub const fn from_str(s: &'static str) -> Arguments<'a>; }

Steps / History

• Change to fmt::Arguments implementation to make it possible: New format_args!() and fmt::Arguments implementation #148789
• Exposing from_str() as unstable: Expose fmt::Arguments::from_str as unstable. #148906
• Final comment period (FCP)
• Stabilization PR

Unresolved Questions

• Do we feel comfortable committing to always having a fmt::Arguments implementation that can represent a &str directly?