ref: c5ee3aadd7954e90041dfe7e3ddb3dbcda6d7f2d
dir: /libc/runevsnprint.c/
#include <u.h> #include <libc.h> int runevsnprint(Rune *buf, int len, char *fmt, va_list args) { Fmt f; if(len <= 0) return -1; f.runes = 1; f.start = buf; f.to = buf; f.stop = buf + len - 1; f.flush = nil; f.farg = nil; f.nfmt = 0; f.args = args; dofmt(&f, fmt); *(Rune*)f.to = '\0'; return (Rune*)f.to - buf; }