# messages and then have a failure before marking some (or
# all).
if ($mhfolder ne 'SPAM') {
- $status = system("mark +$mhfolder $msgnum -sequence unseen -add");
+ $status = system('mark', "+$mhfolder", "$msgnum", '-sequence',
+ 'unseen', '-add');
if (not WIFEXITED($status)) {
err(&EX_OSERR, "Failed to run mark");
} elsif (WEXITSTATUS($status) != 0) {