Multi-line text dataset in Tensorflow
You can try two options:

Write a generator and then use Dataset.from_generator: In your generator you can read your file line by line, append to your example while doing that and then yield when you encounter your custom delimiter.
First parse your file, create tf.train.SequenceExample with multiple lines and then store your dataset as a TFRecordDataset (more cumbersome option in my opinion)
tf.data.* has dataset classes.  There is a TextLineDataset, but what I need is one for multiline text (between start/end tokens). Is there a way to use a different line-break delimiter for tf.data.TextLineDataset?
I am an experienced developer, but a python neophyte. I can read but my writing is limited.  I am bending an existing Tensorflow NMT tutorial to my own dataset.  Most TFRecord tutorials involve jpgs or other structured data.