Function writer

third-party/lua-5.3.5/src/lstrlib.c:182–186

static int writer (lua_State *L, const void *b, size_t size, void *B) {
  (void)L;
  luaL_addlstring((luaL_Buffer *) B, (const char *)b, size);
  return 0;
}


static int str_dump (lua_State *L) {