From 22b07365db230f8686f5afb3e124ab6cc20a9df2 Mon Sep 17 00:00:00 2001
From: David Capello <davidcapello@gmail.com>
Date: Mon, 25 Sep 2017 14:10:35 -0300
Subject: [PATCH] Fix "File > Export" for sprites without an associated
 filename

---
 src/app/commands/cmd_save_file.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/app/commands/cmd_save_file.cpp b/src/app/commands/cmd_save_file.cpp
index ed6c6bbb3..100d05106 100644
--- a/src/app/commands/cmd_save_file.cpp
+++ b/src/app/commands/cmd_save_file.cpp
@@ -204,7 +204,8 @@ bool SaveFileBaseCommand::saveAsDialog(
       return false;
 
     filename = newfilename.front();
-    if (base::normalize_path(forbiddenFilename) ==
+    if (!forbiddenFilename.empty() &&
+        base::normalize_path(forbiddenFilename) ==
         base::normalize_path(filename)) {
       ui::Alert::show("Overwrite Warning"
                       "<<You cannot save a copy with the same name (overwrite the original file)."
@@ -444,7 +445,8 @@ void SaveFileCopyAsCommand::onExecute(Context* context)
   }
 
   if (saveAsDialog(context, "Export",
-                   oldFilename, delegate)) {
+                   (document->isAssociatedToFile() ? oldFilename: std::string()),
+                   delegate)) {
     docPref.saveCopy.filename(document->filename());
     if (delegate) {
       docPref.saveCopy.resizeScale(delegate->getResizeScale());