Counting words, fast!

[Jesse Hathaway]

Ben Hoyt wrote a fun blog post on counting words,
https://benhoyt.com/writings/count-words, I wrote a Bash version with
as many optimizations as I could find[1], I would love any suggestions
on any substantial optimizations, the code is attached. The full
repo and test file is here: https://github.com/benhoyt/countwords

Yours kindly, Jesse

[1]: https://github.com/benhoyt/countwords/pull/66

optimized.bash
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