Sometimes using a split can work out better than a full blown regex. Consider this:
#!/usr/bin/perl
use strict;
use warnings;
my $row = 'We_need_feed';
my ($first, $middle, $last) = split /_/, $row;
print "first=$first, middle=$middle, last=$last\n";
#Update: just demo of indices:
($first, $middle, $last) = (split (/_/,$row))[0,1,-1];
print "middle=$middle\n";
__END__
Prints:
first=We, middle=need, last=feed
middle=need
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