spanish hyphenation

[Abel Morabito]

Dear developers,

I'm trying to get hyphen for spanish with groff 1.17.2 under 
GNU/Linux `Woody'  -- kernel 2.4.18

I'm not sure this is a bug or my mistake. I've copied `eshyph.tex' 
by Javier Bezos in my tmac directory. I've changed all commented 
lines from % to .\" Then I've made a symlink from eshyph.tex to 
hyphen.es My document preamble includes

    .hy
    .hpf hyphen.es
    .hla es
    .hcode á á A á é é É é í í I í ó ó O ó a a A a ú ú U ú ñ ñ Ñ ñ ¿ ¿ ¡ ¡ 

As I try 

    groff -ms -Tps mydocument.ms > mydocument.ps

I've got this message:

    troff: Failed assertion at line 3418, file `env.cc'

I'm sending you eshyph.tex as an attachment --it's small.

If you've got the time please tell me what to do. I've already read 
the groff mailing list and the FAQ but I couln't work it out.

Thank you in advance!

--
Abel Morabito

eshyph.tex
Description: TeX document