From 216faa551997c3eaf1a7ccb9d512efb8d50df118 Mon Sep 17 00:00:00 2001
From: Dirk Koopman <djk@tobit.co.uk>
Date: Fri, 20 Jul 2007 15:41:53 +0100
Subject: [PATCH] prevent hop counts of -1 being generated.

---
 perl/DXProt.pm  | 9 ++++++---
 perl/Version.pm | 2 +-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/perl/DXProt.pm b/perl/DXProt.pm
index bc753c3d..596f1f08 100644
--- a/perl/DXProt.pm
+++ b/perl/DXProt.pm
@@ -1008,7 +1008,7 @@ sub adjust_hops
 	my $call = $self->{call};
 	my $hops;
 
-	if (($hops) = $s =~ /\^H(\d+)\^?~?$/o) {
+	if (($hops) = $s =~ /\^H([-\d]+)\^?~?$/o) {
 		my ($pcno) = $s =~ /^PC(\d\d)/o;
 		confess "$call called adjust_hops with '$s'" unless $pcno;
 		my $ref = $nodehops{$call} if %nodehops;
@@ -1017,8 +1017,11 @@ sub adjust_hops
 			return "" if defined $newhops && $newhops == 0;
 			$newhops = $ref->{default} unless $newhops;
 			return "" if defined $newhops && $newhops == 0;
-			$newhops = $hops if !$newhops;
-			$s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
+			$newhops = $hops unless $newhops;
+			return "" unless $newhops > 0;
+			$s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops != $hops;
+		} else {
+			return "" unless $hops > 0;
 		}
 	}
 	return $s;
diff --git a/perl/Version.pm b/perl/Version.pm
index 5b13b540..db524ea5 100644
--- a/perl/Version.pm
+++ b/perl/Version.pm
@@ -11,6 +11,6 @@ use vars qw($version $subversion $build);
 
 $version = '1.54';
 $subversion = '0';
-$build = '122';
+$build = '123';
 
 1;
-- 
2.34.1