Gunning-fog index analyzer written in Go. This analyzer processes an English text and produces its Gunning Fox index score. Refer to its logic in https://en.wikipedia.org/wiki/Gunning_fog_index - it does not analyse word endings (-es, -ed, or -ing), or discriminate proper nouns, familiar jargon or compound words.
Use
$ go get cirello.io/gunning-fog/...
$ cat LICENSE | $GOBIN/gunning-fog
16gunning-fog will always wait content from STDIN.