+# Execute a command (e.g. $to_cmd) to get a list of email addresses
+# and return a results array
+sub recipients_cmd {
+ my ($prefix, $what, $cmd, $file) = @_;
+
+ my $sanitized_sender = sanitize_address($sender);
+ my @addresses = ();
+ open my $fh, "$cmd \Q$file\E |"
+ or die "($prefix) Could not execute '$cmd'";
+ while (my $address = <$fh>) {
+ $address =~ s/^\s*//g;
+ $address =~ s/\s*$//g;
+ $address = sanitize_address($address);
+ next if ($address eq $sanitized_sender and $suppress_from);
+ push @addresses, $address;
+ printf("($prefix) Adding %s: %s from: '%s'\n",
+ $what, $address, $cmd) unless $quiet;
+ }
+ close $fh
+ or die "($prefix) failed to close pipe to '$cmd'";
+ return @addresses;
+}
+