luaZ_buffer
char *p = luaZ_buffer(ls->buff);
#define buff2d(b,e) luaO_str2d(luaZ_buffer(b), luaZ_bufflen(b) - 1, e)
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + (2 + sep),
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + 1,
ts = luaX_newstring(ls, luaZ_buffer(ls->buff),
return luaO_pushfstring(ls->L, LUA_QS, luaZ_buffer(ls->buff));