Tracking Issue for `char_max_len`

[HTGAzureX1212]

Feature gate: #![feature(char_max_len)]

This is a tracking issue for #45795.

Public API

// core::char

impl char {
    pub const MAX_LEN_UTF8: usize = 4;
    pub const MAX_LEN_UTF16: usize = 2;
}

pub const MAX_LEN_UTF8: usize = char::MAX_LEN_UTF8;
pub const MAX_LEN_UTF16: usize = char::MAX_LEN_UTF16;

Steps / History

• Implementation: Add MAX_LEN_UTF8 and MAX_LEN_UTF16 Constants #120580
• Final comment period (FCP)¹
• Stabilization PR

Notes for Stabilization

When stabilizing this, the documentation for the char::encode_utf8 function should be
adjusted to include these constants.

Unresolved Questions

• None yet.

Footnotes

1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html ↩