-if ( $plugin_list and -r $plugin_list and $fh->open("< $plugin_list") ) {
- @plugin_list = map { chomp $_; $_ } grep { /\S/ && !/^#/ } <$fh>;
- $fh->close;
+if ( $plugin_list ) {
+ if ( -r $plugin_list and $fh->open("< $plugin_list") ) {
+ @plugin_list = map { chomp $_; $_ } grep { /\S/ && !/^#/ } <$fh>;
+ $fh->close;
+ }
+ else {
+ warn "unable to read or open plugin_list '$plugin_list': $!";
+ $plugin_list = '';
+ }
for my $plugin_dir (@plugin_dirs) {
next unless -d $plugin_dir;
if ( opendir PLUGINS, $plugin_dir ) {
for my $plugin_dir (@plugin_dirs) {
next unless -d $plugin_dir;
if ( opendir PLUGINS, $plugin_dir ) {
unshift @INC, @plugin_dirs;
foreach my $plugin (@plugin_list) {
my ( $plugin_name, $off ) = $plugin =~ /^\d*([\w:]+?)(_?)$/;
unshift @INC, @plugin_dirs;
foreach my $plugin (@plugin_list) {
my ( $plugin_name, $off ) = $plugin =~ /^\d*([\w:]+?)(_?)$/;
- if ( $plugin =~ m/::/ && -z $plugin_hash{$plugin} ) {
+ # The -z test is a hack to allow a zero-length placeholder file in a
+ # $plugin_path directory to indicate an @INC module should be loaded
+ if ( $plugin =~ m/::/ && ( $plugin_list || -z $plugin_hash{$plugin} ) ) {