This crate contains a list of all unicode blocks and provides some functions to search across them.
The latest version of Unicode: 15.1.0
assert_eq!(unicode_blocks::BASIC_LATIN, unicode_blocks::find_unicode_block('A').unwrap());
assert!(unicode_blocks::is_cjk_block(unicode_blocks::CJK_UNIFIED_IDEOGRAPHS));
assert!(unicode_blocks::is_cjk('。'));
https://crates.io/crates/unicode-blocks