-if ($opt_A) {
- die "Cannot open $opt_A\n" unless -f $opt_A;
- open(my $authors,$opt_A);
+our $users_file = undef;
+sub read_users($) {
+ $users_file = File::Spec->rel2abs(@_);
+ die "Cannot open $users_file\n" unless -f $users_file;
+ open(my $authors,$users_file);