emacs的nxhtml插件的一个问题

[demonhack]

= =这货我没找到什么中文资料，英文的看着蛋疼……
勉强装上了结果随便开了个html报了个Warning: `font-lock-beginning-of-syntax-function' is an obsolete variable (as
of Emacs 23.3); use `syntax-begin-function' instead.
用syntax-begin-function替代font-lock-beginning-of-syntax-function?神马意思？
各大神求救