Enum and name table

+ <stdio.h>
# Enum plus matching name table from one list: the macro removes the "update both places" bug.
@m colors($m)
  $m(RED)
  $m(GREEN)
  $m(BLUE)
@tt
  names:=["RED","GREEN","BLUE"]
  items:=[]
  for n names
    items = push(items, "\"" + n + "\"")
  emit("static const char *color_name[] = {" + join(items, ", ") + "};")
  emit("enum Color { " + join(names, ", ") + ", COLOR_COUNT };")
f main()
  for i := 0; i < COLOR_COUNT; i++
    printf("%d = %s\n", i, color_name[i])
  < 0

#include <stdio.h>

static const char *color_name[] = {"RED", "GREEN", "BLUE"};
enum Color {
    RED,
    GREEN,
    BLUE,
    COLOR_COUNT
};

int main(void) {
    for (int i = 0; i < COLOR_COUNT; i++) {
        printf("%d = %s\n", i, color_name[i]);
    }
    return 0;
}