[Zope] Catalog and local characters

[Nicolas LAURANCE]

Hello zope community

Here is the problem, maybe you had it before if you're french, german,
spanish....

I have a collection of objects supervised with a Catalog.

Say I have an object containing the string 'ing=E9nieur'

If I search for 'ingenieur' it doesn't work....

How can I tell the Catalog to ignore the difference between '=E9', =
'=E8',
'e', '=EA' Same for 'a', '=E0', '=E2'

....

????
Any clue is welcome, since many of our seaches in the Catalog return
nothing because of this

NIL