[perl] How to fix a locale setting warning from Perl

As always, the devil is in the detail...

On Mac OS X v10.7.5 (Lion), to fix some Django error, in my ~/.bash_profile I've set:

export LANG=en_EN.UTF-8
export LC_COLLATE=$LANG
export LC_CTYPE=$LANG
export LC_MESSAGES=$LANG
export LC_MONETARY=$LANG
export LC_NUMERIC=$LANG
export LC_TIME=$LANG
export LC_ALL=$LANG

And in turn for a long time I got that warning when using Perl.

My bad! As I've realized much later, my system is en_US.UTF-8! I fixed it simply by changing from

export LANG=en_EN.UTF-8

to

export LANG=en_US.UTF-8