Re: port x-symbol to GNU emacs 24.

Uwe wrote in response to Stephen:

>    > advantage of the fact that most (all?) of those symbols are already in
>    > Unicode.  I believe there are TeX add-ons that allow you to use them
>    > instead of the traditional macros, as well, so you might not even need
>    > to fiddle the display of the TeX file at all, and x-symbol would be
>    > completely irrelevant.
>
> Do you have any reference, or is this just a guess?

Has it occurred to you to do a web search?

In summary, if you want to do Unicode maths properly (or Unicode
anything else properly), you should really switch to Xe(La)TeX.
If you don't want to do that (and it's not entirely trivial), you can
hack things with [uft8x]inputenc and mathletters.