words breaks a byte stream up into a succession of byte streams
corresponding to words, breaking on
Chars representing white
space. This is the genuinely streaming
words. A function that
returns individual strict bytestrings would concatenate even
infinitely long words like
cycle "y" in memory. When the
stream is known to not contain unreasonably long words, you can write
mapped toStrict . words or the like, if strict bytestrings
are needed.