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A fun read on word count optimization can be found in Abrash's Black Book:<a href="https://www.jagregory.com/abrash-black-book/#lessons-learned-in-the-pursuit-of-the-ultimate-word-counter" rel="nofollow">https://www.jagregory.com/abrash-black-book/#lessons-learned...</a>You can gloss over the asm if you wish, the tricks that are explained around it are worth it imho.

Those `goto`s between two different for loops is crazy.

> A word is a maximal string of characters delimited by spaces, tabs or newlines.And then the actual code explicitly filters out and ignores every character larger than 0x7F. Just why.

The brevity carried over to Plan 9. Re-posting my older comment (<a href="https://news.ycombinator.com/item?id=4023385">https://news.ycombinator.com/item?id=4023385</a>):<a href="http://en.wikipedia.org/wiki/Plan_9_from_Bell_Labs" rel="nofollow">http://en.wikipedia.org/wiki/Plan_9_from_Bell_Labs</a> follows the Unix philosophy. A lot of legacy has been shed. I can count 13 options to ls, 11 options to sed and just 5 to sed.The standard Plan 9 shell, Rc, is described in mere ~500 lines of manpage, while Bash takes whooping ~5400 lines.Oh, and there is no `dll hell' in P9 :-)

Those `goto`s between two different for loops is crazy.

> A word is a maximal string of characters delimited by spaces, tabs or newlines.And then the actual code explicitly filters out and ignores every character larger than 0x7F. Just why.

Exploring pre-1990 versions of wc(1) (2023)

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Exploring pre-1990 versions of wc(1) (2023)

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