ref: 3f5a4e9f7e3c0d1e7c43d2974049e2eb7bc7b5a0 dir: /sys/src/libc/fmt/fmtstr.c/
#include <u.h> #include <libc.h> char* fmtstrflush(Fmt *f) { if(f->start == nil) return nil; *(char*)f->to = '\0'; return f->start; }