Trait UnicodeWidthChar

pub trait UnicodeWidthChar: Sealed {
    // Required methods
    fn width(self) -> Option<usize>;
    fn width_cjk(self) -> Option<usize>;
}

Methods for determining displayed width of Unicode characters.

Required Methods

fn width(self) -> Option<usize>

Returns the character’s displayed width in columns, or None if the character is a control character.

This function treats characters in the Ambiguous category according to Unicode Standard Annex #11 as 1 column wide. This is consistent with the recommendations for non-CJK contexts, or when the context cannot be reliably determined.

fn width_cjk(self) -> Option<usize>

Returns the character’s displayed width in columns, or None if the character is a control character.

This function treats characters in the Ambiguous category according to Unicode Standard Annex #11 as 2 columns wide. This is consistent with the recommendations for CJK contexts.

Implementations on Foreign Types

impl UnicodeWidthChar for char

fn width(self) -> Option<usize>

fn width_cjk(self) -> Option<usize>

Implementors