Pure C example - (nf)

[utzoo!decvax!harpo!ihnp4!ixn5c!inuxc!pur-ee!uiucdcs!uicsl!preece]

#R:ihnss:-117800:uicsl:6400001:000:241
uicsl!preece    Jan  4 15:02:00 1983

Actually, real Dartmouth Basic (as of 1970, when i last used it)
did in fact allow nested assignments. It also had multi-line DEFs,
local variables, and the assumption that all DEFs are allowed
recursion. And, of course, dynamic strings...