The following bug has been logged online:
Bug reference: 4451
Logged by: Scott V
Email address: datagenic(at)gmail(dot)com
PostgreSQL version: 8.3.1
Operating system: Mac OS X 10.5.4
Description: initcap() function capitalizes incorrectly
Details:
initcap() capitalizes incorrectly when passing strings containing certain
two-byte UTF-8 characters. E.g., when argument = 'mātūrāte', initcap
returns 'MāTūRāTe'. Correct result should be 'Mātūrāte'.
The function appears to be incorrectly interpreting the two-byte chars as
non-alphamueric characters. They are in fact alphanumerics, they just have
diacritical markings.