--- trunk/lib/WebPAC/Normalize.pm	2007/04/05 21:50:14	817
+++ trunk/lib/WebPAC/Normalize.pm	2007/04/11 10:09:34	819
@@ -42,11 +42,11 @@
 
 =head1 VERSION
 
-Version 0.28
+Version 0.29
 
 =cut
 
-our $VERSION = '0.28';
+our $VERSION = '0.29';
 
 =head1 SYNOPSIS
 
@@ -1021,7 +1021,8 @@
 =cut
 
 sub prefix {
-	my $p = shift or return;
+	my $p = shift;
+	return @_ unless defined( $p );
 	return map { $p . $_ } grep { defined($_) } @_;
 }
 
@@ -1034,7 +1035,8 @@
 =cut
 
 sub suffix {
-	my $s = shift or die "suffix needs string as first argument";
+	my $s = shift;
+	return @_ unless defined( $s );
 	return map { $_ . $s } grep { defined($_) } @_;
 }
 
@@ -1047,8 +1049,10 @@
 =cut
 
 sub surround {
-	my $p = shift or die "surround need prefix as first argument";
-	my $s = shift or die "surround needs suffix as second argument";
+	my $p = shift;
+	my $s = shift;
+	$p = '' unless defined( $p );
+	$s = '' unless defined( $s );
 	return map { $p . $_ . $s } grep { defined($_) } @_;
 }