def ttf.left
import gralha-truetype@0.1.0.1/font.bend as Fontimport Base
import gralha-text-scan@0.1.0.1/scan.bend as U
import gralha-bytes@0.1.0.1/bytes.bend as Bin
639def ttf.left(+b: Bin.Bytes, +pairs: TTPairs, +gid: U32) -> U32:
640 TTPairs{specific, classes, coverage, class1, class2} = pairs
641 U.choose(U32, U32.is_gt(ttf.coverage(b, coverage, gid), 0), (ttf.classdef(b, class1, gid) + 1 : U32), 0)