UTF-8 flags (again)

[Matt Sergeant]

OK, sorry to bring up everyone's least favourite subject, but I had a 
conversation with Nick Clark at OSCon, who suggested that the best 
route to Unicode conformance (for now - until DBIv2) is to actually 
explicitly turn off the UTF-8 flag when you populate the record AV 
during fetch(). The reason you should do this (I believe) is because 
the resulting strings may get passed just about anywhere during a fetch 
loop, and something may or may not alter the UTF-8 flag, and it'll get 
left set/unset the next time around the fetch loop for the next value 
(sv_setpv doesn't alter this flag - it leaves it as-is). This will not 
be what you want.

i.e. for every fetch call, you need to do:
  SvUTF8_off(AvARRAY(av)[i]);
Now, people using your DBD can decide to upgrade the variable if they 
wish to, but most people who don't need to will be unaffected.

Matt.