Accent insensitive search

[Diego Manilla Suárez <diego.manilla@xxxxxxxxxxx>]

Hi. I have a few databases created with UNICODE encoding, and I would 
like to be able to search with accent insensitivity. There's something 
in Oracle (NLS_COMP, NLS_SORT) and SQL Server (don't remember) to do 
this, but I found nothing in PostgreSQL, just the 'to_ascii' function, 
which AFAIK, doesn't work with UNICODE.

Thanks in advance.