# note: A sub-image code using the explicit max_symbol early stop.
# expect: ok
# exercises: ReadHuffmanCodeLengths()'s use_length branch, reached through a
#   transform sub-image rather than at level 0. cwebp emits it nowhere.
lossless
width 16
height 4
transforms predictor
predictor_tiles 1 1 1 1
subimage predictor
code green lengths 1:1
code green codelen 0 1
code green max_symbol 2