Tracking Issue for titlecase handling in `core::char`

[Jules-Bertholet]

Feature gate: #![feature(titlecase)]

This is a tracking issue for library functions to handle title-casing of Unicode characters.

Public API

// core::char

pub fn is_cased(self) -> bool;
pub fn case(self) -> Option<CharCase>;
pub fn is_titlecase(self) -> bool;
pub fn to_titlecase(self) -> ToTitlecase;

#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub enum CharCase {
    Lower = 0b00,
    Title = 0b10,
    Upper = 0b11,
}

struct ToTitlecase { ... }
impl Iterator for ToTitlecase { ... }
impl DoubleEndedIterator for ToTitlecase { ... }
impl FusedIterator for ToTitlecase { }
impl ExactSizeIterator for ToTitlecase { ... }
impl fmt::Display for ToTitlecase { ... }

Steps / History

(Remember to update the S-tracking-* label when checking boxes.)

• ACP: Add titlecase APIs to char libs-team#354
• Implementation: Add APIs for dealing with titlecase #122668
• Final comment period (FCP)¹
• Stabilization PR

Unresolved Questions

• None yet.

Footnotes

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