[dokuwiki] How is done the link creation without the special chars?

Hello,

Sorry, I am a bit lost in the code of Dokuwiki.
I tried to find how is done the link creation of a text.
For example, if I put this in a page :

[[Test de "l'Éclairé" (un, deux)]]

The link points to:
test_de_l_eclaire_un_deux

Where is done the transformation? I would like to use the same kind of
transformation in a page of mine (not related to dokuwiki), but I could not
find it in Dokuwiki code.
I already have such a function, but it is not complete enough, from time to
time I have to add cahrs that I forgot. And I am sure that Dokuwiki's way of
doing this transformation will be complete.

Thanks for your help
Yann

Other related posts: