ref: 3f9d5e4a4f9e4f0b5fe66e4a6745a4b8c5f6e447 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; }