Right, this is more or less this blog author’s riff on (PuTTY author) Simon Tatham’s old page on coroutines using switch[1], which itself indicates that Tom Duf

Right, this is more or less this blog author’s riff on (PuTTY author) Simon Tatham’s old page on coroutines using switch[1], which itself indicates that Tom Duff thought of this (which makes sense, it’s only a half-step away from Duff’s device) and described it as “revolting”. So in this sense the idea predates the standardization of C. [1] https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html