[!IMPORTANT] Try the optimized version unicode-id-start.

unicode-id

Determine if a char is a valid identifier for a parser and/or lexer according to Unicode Standard Annex #31 rules.

This is a clone of unicode-xid.

use unicode_id::UnicodeID;

fn main() {
    let ch = 'a';
    println!("Is {} a valid start of an identifier? {}", ch, UnicodeID::is_id_start(ch));
}

features

unicode-id supports a no_std feature. This eliminates dependence on std, and instead uses equivalent functions from core.

changelog

0.3.5

• Update to Unicode 16.0.0

0.3.4

• Update to Unicode 15.1.0

0.3.3

• Update to Unicode 15.0.0

0.3.2

• Fix clippy warnings

0.3.0

• Fork repo for unicode-id
• Update to Unicode 14.0.0

0.2.2

• Add an ASCII fast-path

0.2.1

• Update to Unicode 13.0.0
• Speed up lookup

0.2.0

• Update to Unicode 12.1.0.

0.1.0

• Initial release.