ref: 8188b4f4f0e07b6669e6ae3c6c1099af917eaab4
dir: /sys/src/libc/fmt/runesprint.c/
#include <u.h> #include <libc.h> int runesprint(Rune *buf, char *fmt, ...) { int n; va_list args; va_start(args, fmt); n = runevsnprint(buf, 256, fmt, args); va_end(args); return n; }