".*utf\\(-?8\\)\\>" versus ".*[._]utf" versus "address@hidden>"

[Paul Eggert]

The regular expression ".*utf\\(-?8\\)\\>" in
locale-charset-language-names seems to be inconsistent with the
regular expression ".*[._]utf" in locale-preferred-coding-systems.
Shouldn't one or the other regular expression (or both) be changed?

I think the regular expression should contain [._]; I'm not so sure
about the \\(-?8\\)\\> part.

Also, locale-charset-language-names ends with this:

     ("address@hidden>" . "Latin-9")
     (".*utf\\(-?8\\)\\>" . "UTF-8")))

Shouldn't the UTF-8 pattern come before the euro pattern and the other
patterns?  It seems to me that the current order mishandles locales
like "address@hidden", which are present on Solaris 8.