Everytime I've heard a #Vim user say something to the effect of "can your emacs do THAT" the answer has always been yes of course thats a one-liner, but there's still no serious #noweb programming modes for vim that allow polyglot literate programming, while there are several for #emacs
It is YEARS since I used noweb, but maybe I could use it again, say for ports to other languages than C of program06 (my program that VIOLATES BELL INEQUALITIES despite having nothing resembling the non-existent ‘entanglement’).