Expand description

Implementation of the Line Breaking Algorithm described in Unicode Standard Annex #14.

Given an input text, locates “line break opportunities”, or positions appropriate for wrapping lines when displaying text.


use unicode_linebreak::{linebreaks, BreakOpportunity::{Mandatory, Allowed}};

let text = "a b \nc";
    (2, Allowed),   // May break after first space
    (5, Mandatory), // Must break after line feed
    (6, Mandatory)  // Must break at end of text, so that there always is at least one LB




  • Returns the line break property of the specified code point.
  • Returns an iterator over line break opportunities in the specified string.
  • Divides the string at the last index where further breaks do not depend on prior context.