ispell/aspell in TeX mode.

[gustavo halperin <ggh.develop@gmail.com>]

Hello

I need spell word with accent. This documents are LaTeX files and I 
edit them with Emacs editor.
In LaTeX when you write a word with accent you write it in the next 
form " \' ", for example the word in Spanish "pasó" in LaTeX will be 
written like this "pas\'o". Therefore I need to say to ispell/aspell to 
recognize this style of accent.
 In ispell/aspell documentation defined this mode like "tex" mode I 
tried the next lines in ".emacs":
         (setq-default ispell-program-name "aspell")
         (setq-default ispell-extra-args '("--mode=tex"))

but the spell still not recognize the LaTeX stile for the words with accent.

How I fix it ???

 Thank you in advance,
      Gustavo Halperin