TeX escapes don't work

[Bertalan Fodor]

TeX escapes mess up lyrics spacing in DVI output, but there is no other 
way to enter non-latin1 characters:

\version "2.4.0"

\score {
   <<
   \new Staff {
       c' d' e' f'
   }
   \new Lyrics \lyricsto "" \lyricmode {
        Ár -- víz -- tű -- rő.
   }
   \new Lyrics \lyricsto "" \lyricmode {
       \'Ar -- v\'iz -- "t\H{u}" -- "r\H{o}"
   }
   >>
}