From 9525af3dae257216826914ea26c666b6cc816e90 Mon Sep 17 00:00:00 2001
From: chrik5 <christian.kanzian@gmx.at>
Date: Mon, 22 Dec 2014 12:21:22 +0100
Subject: [PATCH] fix: empty image_tag list before copy new tags

---
 contrib/copy_attach_detach_tags.lua | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/contrib/copy_attach_detach_tags.lua b/contrib/copy_attach_detach_tags.lua
index f2b5f52..11288e4 100644
--- a/contrib/copy_attach_detach_tags.lua
+++ b/contrib/copy_attach_detach_tags.lua
@@ -26,10 +26,12 @@ dt.configuration.check_version(...,{2,0,0})
 local image_tags = {}
 
 local function mcopy_tags()
-local sel_images = dt.gui.selection()
-local tag_list_tmp = {}
-local hash = {}
+  local sel_images = dt.gui.selection()
+  local tag_list_tmp = {}
+  local hash = {}
 
+  -- empty tag table before copy new tags
+  image_tags = {}
   for _,image in ipairs(sel_images) do
       local image_tags_tmp = {}
       image_tags_tmp = dt.tags.get_tags(image)