harden hop count decrementing.

[spider.git] / perl / DXProt.pm

diff --git a/perl/DXProt.pm b/perl/DXProt.pm
index 360bb2dd2392c602e788a42e77edee9b0411f4aa..18ecf1297956402ff15ee177a5d8fe08001178f9 100644 (file)
--- a/perl/DXProt.pm
+++ b/perl/DXProt.pm
@@ -2164,13 +2164,14 @@ sub adjust_hops
                        return "" if defined $newhops && $newhops == 0;
                        $newhops = $ref->{default} unless $newhops;
                        return "" if defined $newhops && $newhops == 0;
-                       $newhops = $hops if !$newhops;
+                       $newhops = $hops unless $newhops;
+                       return "" unless $newhops > 0;
                        $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
                } else {
                        # simply decrement it
                        $hops--;
-                       return "" if !$hops;
-                       $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
+                       return "" unless $hops > 0;
+                       $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/;
                }
        }
        return $s;