Re: maphash

[Richard Stallman]

    Fortunately for me, in GNU Emacs Stephen's example--and several 
    variations thereof--do work the way I described,
    ...

    After taking a quick look at the C source code, the simple answer to 
    Richard's question is "No, thank you."

We can't document this feature unless we know it can be relied on.  I
took a quick look at the code of maphash and it led me to doubt that
this is generally true, but while I have the know-how to study it
carefully, I do not have the time.