$ perl -e 'use LWP; print LWP::Protocol::implementor("https"),"\n";'
LWP::Protocol::https
$ perl -e 'use LWP; $ENV{"PERL_LWP_USE_HTTP_10"}=1; print LWP::Protocol::implementor("https"),"\n";'
LWP::Protocol::https
$ perl -e '$ENV{"PERL_LWP_USE_HTTP_10"}=1; use LWP; print LWP::Protocol::implementor("https"),"\n";'
LWP::Protocol::https
$ perl -e '$ENV{"PERL_LWP_USE_HTTP_10"}=1; require 'LWP'; print LWP::Protocol::implementor("https"),"\n";'
LWP::Protocol::https10
$ perl -e 'BEGIN { $ENV{"PERL_LWP_USE_HTTP_10"}=1; } use LWP; print LWP::Protocol::implementor("https"),"\n";'
LWP::Protocol::https10
$ export PERL_LWP_USE_HTTP_10=1; perl -e 'use LWP; print LWP::Protocol::implementor("https"),"\n";'
LWP::Protocol::https10