From fb7a185d4db7dd0735ce5b553547b1bfda668a51 Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <moritz@bunkus.org>
Date: Thu, 6 Aug 2009 12:24:51 +0200
Subject: [PATCH] Don't add empty arguments to mkvmerge's command line for
 options given with "add command line options".

Fix for bug 429.
---
 src/mmg/mmg_dialog.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/mmg/mmg_dialog.cpp b/src/mmg/mmg_dialog.cpp
index f07b6b7d6..af8aa439b 100644
--- a/src/mmg/mmg_dialog.cpp
+++ b/src/mmg/mmg_dialog.cpp
@@ -1030,8 +1030,11 @@ mmg_dialog::update_command_line() {
   cli_options = strip(cli_options);
   if (cli_options.length() > 0) {
     std::vector<wxString> opts = split(cli_options, wxString(wxT(" ")));
-    for (i = 0; i < opts.size(); i++)
-      clargs.Add(strip(opts[i]));
+    for (i = 0; i < opts.size(); i++) {
+      wxString opt = strip(opts[i]);
+      if (!opt.IsEmpty())
+        clargs.Add(opt);
+    }
   }
 
   cmdline = wxT("\"") + shell_escape(options.mkvmerge, true) + wxT("\" -o \"") + shell_escape(tc_output->GetValue()) + wxT("\" ");