diff --git a/ChangeLog b/ChangeLog
index cdf65b1..1ac2de3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,7 @@
 - Show undecided versions in diff and sysup when using "prefer higher"
 - fix display bug in "dependent"
 - fix bug in version comparator
+- Simplify output of 'dup', suggested by maro (-v -> old format)
 
 * 0.5.12	00.04.2006  Johannes Winkelmann
 - Add 'depinst' in 'help' (thanks Simone)
diff --git a/doc/prt-get.8 b/doc/prt-get.8
index a42ea7d..6b30270 100644
--- a/doc/prt-get.8
+++ b/doc/prt-get.8
@@ -223,10 +223,24 @@ Subtrees already shown are marked with '-->' to save some space, in
 order to show them all, add the --all switch
 
 .TP 
-.B dup
+.B dup [-v] [format]
 List ports which can be found in multiple directories configured in
 .B /etc/prt-get.conf
+Use the verbose switch to simulate the output of version 5.12 and older (likely
+to go away in the future). The format string can be used to create user
+specified formats. The following symbols are currently replaced:
 
+.TP 
+\ \ \ \(bu
+%n \-> name of the port
+
+.TP 
+\ \ \ \(bu
+%1 \-> Port which takes precedence
+
+.TP 
+\ \ \ \(bu
+%2 \-> Port which is hidden 
 
 .TP 
 .B list [\-v|\-vv] [filter] [--path] [--regex]
diff --git a/src/prtget.cpp b/src/prtget.cpp
index c4924b6..7d6f7f6 100644
--- a/src/prtget.cpp
+++ b/src/prtget.cpp
@@ -267,14 +267,24 @@ void PrtGet::listShadowed()
     }
 
     initRepo( true );
-    cout << "Hidden packages:" << endl;
+
+    string format = "%1 > %2\n";
+    if (m_parser->otherArgs().size() > 0)
+        format = *(m_parser->otherArgs().begin());
+    else if (m_parser->verbose() > 0) 
+        format = "* %n\n  %1 preceeds over \n  %2\n";
+
+    string output;
     map<string, pair<string, string> >::const_iterator it =
         m_repo->shadowedPackages().begin();
     for ( ; it != m_repo->shadowedPackages().end(); ++it ) {
-        string name = it->first;
-        cout << "* " << name << endl;
-        cout << "  " << it->second.second << " preceeds over" << endl;
-        cout << "  " << it->second.first << endl;
+        output = format;
+        StringHelper::replaceAll(output, "%n", it->first);
+        StringHelper::replaceAll(output, "%1", it->second.second);
+        StringHelper::replaceAll(output, "%2", it->second.first);
+        
+        StringHelper::replaceAll(output, "\\n", "\n");
+        cout << output;
     }
 }
 
diff --git a/src/repository.cpp b/src/repository.cpp
index 0b91c3d..f914118 100644
--- a/src/repository.cpp
+++ b/src/repository.cpp
@@ -228,9 +228,9 @@ void Repository::initFromFS( const list< pair<string, string> >& rootList,
                     } else if ( listDuplicate ) {
                         Package* old = hidden->second;
                         string ps = p->path() + "/" + p->name() +
-                            "-" + p->version();
+                            " " + p->versionReleaseString();
                         string os = old->path() + "/" + old->name() +
-                            "-" + old->version();
+                            " " + old->versionReleaseString();
                             m_shadowedPackages[name] = make_pair( ps, os );
                     }
                 }