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You sir (the author) are a gentleman.

This is really enabling and a generous act of open-sourcing.

Thank you!

He is indeed - I was fortunate enough to work with Wilfred and he is truly passionate about OSS!

Wow, I wasn't expecting to see this on HN.

Thanks for the kind words :)

One thing that confused me about your article, for a moment, was a matter of terminology, as applied to lexical tokens in most programming languages:

[]: these things are square brackets, or brackets for short

(): these things are parentheses

{}: these things are curly braces, or braces for short