ref: 691adfab413b4776a028ee94016fcaf1fa519c6f
dir: /libc/runevsnprint.c/
#include <u.h> #include <libc.h> #include "fmtdef.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 = 0; f.farg = nil; f.nfmt = 0; VA_COPY(f.args,args); dofmt(&f, fmt); VA_END(f.args); *(Rune*)f.to = '\0'; return (Rune*)f.to - buf; }