ref: a584d9eb96636f0743b4d10150f34fc81fd4bb1b dir: /sys/src/libc/fmt/errfmt.c/
#include <u.h> #include <libc.h> #include "fmtdef.h" int errfmt(Fmt *f) { char buf[ERRMAX]; rerrstr(buf, sizeof buf); return _fmtcpy(f, buf, utflen(buf), strlen(buf)); }