diff options
| -rw-r--r-- | fml/lib/FML/Config.pm | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fml/lib/FML/Config.pm b/fml/lib/FML/Config.pm index f8ac3bdf..868bf53c 100644 --- a/fml/lib/FML/Config.pm +++ b/fml/lib/FML/Config.pm @@ -148,8 +148,9 @@ sub _expand_variables EXPANSION_LOOP: while ($max++ < 16) { $org = $config->{ $x }; - - $config->{ $x } =~ s/\$([a-z_]+)/$config->{$1}/g; + + $config->{$x} =~ + s/\$([a-z_]+)/(defined $config->{$1} ? $config->{$1} : '')/ge; last EXPANSION_LOOP if $config->{ $x } !~ /\$/o; last EXPANSION_LOOP if $org eq $config->{ $x }; |