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Rollup merge of #139389 - mejrs:hidden, r=workingjubilee

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make `Arguments::as_statically_known_str` doc(hidden)

Fixes `as_statically_known_str` being [visible](https://doc.rust-lang.org/nightly/std/fmt/struct.Arguments.html#method.as_statically_known_str) ([Rendered](https://github.com/user-attachments/assets/45482d9f-2ec5-4610-be9c-b231bd2850c6))

This snuck in with https://github.com/rust-lang/rust/pull/138650, cc `@thaliaarchi`

This is also visible in the beta docs.

`@rustbot` label +beta-nominated
This commit is contained in:
Stuart Cook 2025-04-05 13:18:17 +11:00 committed by GitHub
commit e31ce50698
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library/core/src/fmt/mod.rs
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@ -743,6 +743,7 @@ impl<'a> Arguments<'a> {
#[unstable(feature = "fmt_internals", reason = "internal to standard library", issue = "none")]
#[must_use]
#[inline]
#[doc(hidden)]
pub fn as_statically_known_str(&self) -> Option<&'static str> {
let s = self.as_str();
if core::intrinsics::is_val_statically_known(s.is_some()) { s } else { None }