[XeTeX] Testing custom hyphenation patterns

[Aleksandr Andreev]

Hello again,

On Fri Apr 20 00:05:06 CEST 2012, Zdenek Wagner <zdenek.wagner at
gmail.com>  wrote:
> It depends on TeX distribution. If you use TeX Live, "kpsewhich
> language.dat" tells you the location of the file. You can always make
> a backup copy.

Looking at language.dat found by kpsewhich, I see the following notice:

% DO NOT EDIT THIS FILE (language.dat)! It is generated by tlmgr.

The tlmgr documentation does not appear to have anything about
hyphenation. Is there a way to simple add the patterns, say to
dumyhyph.tex?

Thanks,

Aleksandr.