From af0829baf5bfe5679984133655634bf0659f64b0 Mon Sep 17 00:00:00 2001
From: Mike Gerber <mike@sprachgewalt.de>
Date: Thu, 28 Aug 2014 17:33:59 +0200
Subject: [PATCH] Don't append duplicate files on cmd line multiple times

If a file is specified multiple time on the command line, do not
append it multiple times.
---
 sloth/core/commands.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sloth/core/commands.py b/sloth/core/commands.py
index 28f6c66..23851c9 100644
--- a/sloth/core/commands.py
+++ b/sloth/core/commands.py
@@ -123,6 +123,7 @@ class AppendFilesCommand(BaseCommand):
             else:
                 logger.debug("Adding image file: %s" % rel_filename)
                 item = self.labeltool.addImageFile(rel_filename)
+            present_filenames.add(rel_filename)
 
             if options['unlabeled']:
                 item.setUnlabeled(True)