Function emptybuffer

deps/lua/src/lauxlib.c:398–407

static int emptybuffer (luaL_Buffer *B) {
  size_t l = bufflen(B);
  if (l == 0) return 0;  /* put nothing on stack */
  else {
    lua_pushlstring(B->L, B->buffer, l);
    B->p = B->buffer;
    B->lvl++;
    return 1;
  }
}


static void adjuststack (luaL_Buffer *B) {