From 5af200a29de401ca6adfe57095b92f8654b8e961 Mon Sep 17 00:00:00 2001
From: chrik5 <christian.kanzian@gmx.at>
Date: Fri, 17 Feb 2017 10:32:06 +0100
Subject: [PATCH] [quicktag] don't allow to set empty tags

---
 contrib/quicktag.lua | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/contrib/quicktag.lua b/contrib/quicktag.lua
index 36c2bac..8363eea 100644
--- a/contrib/quicktag.lua
+++ b/contrib/quicktag.lua
@@ -160,11 +160,15 @@ local set_quicktag_button = dt.new_widget("button") {
   label = "set quicktag",
   clicked_callback = function()
     local old_tag = quicktag_table[old_quicktag.selected]
-    quicktag_table[old_quicktag.selected] = new_quicktag.text
-    dt.preferences.write("quickTag", "quicktag"..old_quicktag.selected, "string",  new_quicktag.text)
-    dt.print("quicktag \""..old_tag.."\" replaced by \""..new_quicktag.text.."\"")
-    update_quicktag_list()
-    new_quicktag.text = ""
+    if new_quicktag.text == "" then
+      dt.print("new quicktag is empty!")
+    else
+      quicktag_table[old_quicktag.selected] = new_quicktag.text
+      dt.preferences.write("quickTag", "quicktag"..old_quicktag.selected, "string",  new_quicktag.text)
+      dt.print("quicktag \""..old_tag.."\" replaced by \""..new_quicktag.text.."\"")
+      update_quicktag_list()
+      new_quicktag.text = ""
+    end
   end,
 }