X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=configpm;h=8ea142050612f2bd57cc31a5175ebc8337872faa;hb=64f14228217abb04a437553319642d6e7a82a3e8;hp=fcf4e3d0fa074b6d5858b6d6caaacd54c369c463;hpb=54310121b442974721115f93666234a200f5c7e4;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/configpm b/configpm
index fcf4e3d..8ea1420 100755
--- a/configpm
+++ b/configpm
@@ -79,7 +79,8 @@ my $summary_expanded = 0;
 
 sub myconfig {
 	return $summary if $summary_expanded;
-	$summary =~ s/\$(\w+)/$Config{$1}/ge;
+	$summary =~ s{\$(\w+)}
+		     { my $c = $Config{$1}; defined($c) ? $c : 'undef' }ge;
 	$summary_expanded = 1;
 	$summary;
 }