It's interesting to note that the creator of C and his well known friend also created m4 in the 70's, and it's very similar to "string interpolation", maybe eve

It's interesting to note that the creator of C and his well known friend also created m4 in the 70's, and it's very similar to "string interpolation", maybe even taken to the extreme. I was actually program-wise "raised" by The C Programming Language in the early 90's, and I only found out about m4 a month ago.