add an 'unimplemented' handler

Author: book

Porting/merge-deltas.pl

@@ -184,6 +184,12 @@ sub inject_items
               $delta->@[ $delta_pos .. $end_pos - 1 ];
         }
     },
+
+    # unimplemented
+    '...' => sub ( $master, $title, $delta ) {
+        my ( $master_pos, $delta_pos ) = find_pos_in( $master, $delta, $title );
+        warn "Merging '$title' sections is not implemented yet\n";
+    }
 );
 
 my %ACTION_FOR = (
@@ -201,7 +207,7 @@ sub inject_items
     'Utility Changes'               => 'head2',
     'Configuration and Compilation' => 'item',
     'Testing'                       => 'item',
-    'Platform Support'              => 'skip',
+    'Platform Support'              => '...',
     'Internal Changes'              => 'item',
     'Selected Bug Fixes'            => 'item',
     'Known Problems'                => 'item',