Function allsorts_no_std::scripts::syriac::gsub_apply_syriac

pub fn gsub_apply_syriac(
    gsub_cache: &LayoutCache<GSUB>, 
    gsub_table: &LayoutTable<GSUB>, 
    gdef_table: Option<&GDEFTable>, 
    script_tag: u32, 
    lang_tag: Option<u32>, 
    raw_glyphs: &mut Vec<RawGlyph<()>>
) -> Result<(), ShapingError>