Is the eval_listfile parameter used by lstmtraining?

[max.f...@plangrid.com]

When I run lstmtraining as 

  /usr/bin/lstmtraining \

    --debug_interval 0  \

    --traineddata /usr/share/tesseract-ocr/4.00/tessdata/eng.traineddata \

    --continue_from /output/eng.lstm \

    --net_spec '[1,36,0,1 Ct3,3,16 Mp3,3 Lfys48 Lfx96 Lrx96 Lfx256 O1c111]' \

    --model_output /output/trained \

    --learning_rate 20e-4 \

    --train_listfile /input/train.files \

    --eval_listfile /input/eval.files \

    --max_iterations 5000

I'm only getting training error displayed in the stdout log eg:

At iteration 268/300/337, Mean rms=3.577%, delta=21.465%, char train=87.195%, word train=81.204%, skip ratio=12.333%,

New best char error = 87.195 wrote checkpoint.

Is the eval_listfile actually used for anything? I'm hoping to automatically perform model evaluation (ideally with early stopping) as part of the training process (i.e. without calling lstmeval).