sugarloaf 0.2.35

Sugarloaf is Rio rendering engine, designed to be multiplatform. It is based on WebGPU, Rust library for Desktops and WebAssembly for Web (JavaScript). This project is created and maintained for Rio terminal purposes but feel free to use it.
Documentation 
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// font_introspector was retired from https://github.com/dfrg/swash
// which is licensed under MIT license

//! Feature constants.

use super::internal::{raw_tag, RawTag};

// Default tag used in various places.
pub const _DFLT: RawTag = raw_tag(b"DFLT");

// Substitution features.
pub const CCMP: RawTag = raw_tag(b"ccmp");
pub const LOCL: RawTag = raw_tag(b"locl");
pub const RVRN: RawTag = raw_tag(b"rvrn");
pub const LIGA: RawTag = raw_tag(b"liga");
pub const CLIG: RawTag = raw_tag(b"clig");
pub const RLIG: RawTag = raw_tag(b"rlig");
pub const _DLIG: RawTag = raw_tag(b"dlig");
pub const CALT: RawTag = raw_tag(b"calt");
pub const LJMO: RawTag = raw_tag(b"ljmo");
pub const VJMO: RawTag = raw_tag(b"vjmo");
pub const TJMO: RawTag = raw_tag(b"tjmo");
pub const NUKT: RawTag = raw_tag(b"nukt");
pub const AKHN: RawTag = raw_tag(b"akhn");
pub const RKRF: RawTag = raw_tag(b"rkrf");
pub const HALF: RawTag = raw_tag(b"half");
pub const HALN: RawTag = raw_tag(b"haln");
pub const VATU: RawTag = raw_tag(b"vatu");
pub const CJCT: RawTag = raw_tag(b"cjct");
pub const ISOL: RawTag = raw_tag(b"isol");
pub const INIT: RawTag = raw_tag(b"init");
pub const MEDI: RawTag = raw_tag(b"medi");
pub const MED2: RawTag = raw_tag(b"med2");
pub const FINA: RawTag = raw_tag(b"fina");
pub const FIN2: RawTag = raw_tag(b"fin2");
pub const FIN3: RawTag = raw_tag(b"fin3");
pub const MSET: RawTag = raw_tag(b"mset");
pub const RPHF: RawTag = raw_tag(b"rphf");
pub const PREF: RawTag = raw_tag(b"pref");
pub const ABVF: RawTag = raw_tag(b"abvf");
pub const BLWF: RawTag = raw_tag(b"blwf");
pub const PSTF: RawTag = raw_tag(b"pstf");
pub const PRES: RawTag = raw_tag(b"pres");
pub const ABVS: RawTag = raw_tag(b"abvs");
pub const BLWS: RawTag = raw_tag(b"blws");
pub const PSTS: RawTag = raw_tag(b"psts");
pub const RCLT: RawTag = raw_tag(b"rclt");
pub const VERT: RawTag = raw_tag(b"vert");
pub const VRT2: RawTag = raw_tag(b"vrt2");
pub const RTLM: RawTag = raw_tag(b"rtlm");

// Positioning features.
pub const KERN: RawTag = raw_tag(b"kern");
pub const DIST: RawTag = raw_tag(b"dist");
pub const ABVM: RawTag = raw_tag(b"abvm");
pub const BLWM: RawTag = raw_tag(b"blwm");
pub const CURS: RawTag = raw_tag(b"curs");
pub const MARK: RawTag = raw_tag(b"mark");
pub const MKMK: RawTag = raw_tag(b"mkmk");

// Arabic joining masks.
pub const ISOL_MASK: u8 = 1;
pub const INIT_MASK: u8 = 2;
pub const MEDI_MASK: u8 = 4;
pub const FINA_MASK: u8 = 8;
pub const MED2_MASK: u8 = 16;
pub const FIN2_MASK: u8 = 32;
pub const FIN3_MASK: u8 = 64;
pub const NONE_MASK: u8 = 0;

// Hangul jamo masks.
pub const LJMO_MASK: u8 = 1;
pub const VJMO_MASK: u8 = 2;
pub const TJMO_MASK: u8 = 4;