The following bug has been logged on the website:
Bug reference: 12542
Logged by: Renzo Orsini
Email address: orsini(at)unive(dot)it
PostgreSQL version: 9.3.5
Operating system: Mac OS X
Description:
When lower and upper are applied to UTF8 strings with accented letters, they
have an incorrect behaviour, for instance, upper('Autorità') returns
'AUTORITà' and not 'AUTORITÀ' as it should. Similarly, lower('AUTORITÀ')
returns lower('autoritÀ').