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Thank you for sharing that link to the tinycode Reddit. Did the original poster (for the C in four functions) participate in that sub-reddit ?

It would appear so. https://www.reddit.com/r/tinycode/comments/2la785/c4_a_c_com... is the post from /r/tinycode and its OP[0] is the same as the github user[1] for c4.