I think it would be interesting and adequate to hear about and link to the reflections of the original awk authors (Aho, Kernighan, Weinberg et al) considering they were also experts for yacc and other compiler-compiler tools from the 1977–1985 era and authors of the dragon book. After all, awk syntax was the starting point for JavaScript including warts such as regexp literals, optional semicolons, for (e in a), delete a[e], introducing the function keyword to a C-like language, etc. I recall at least Kernighan talked about optional semicolons as something he‘d reconsider given the chance.