From f6e6ac3162e22d362bb120fdf8cef1f2e9832570 Mon Sep 17 00:00:00 2001
From: Jeff Young <jeff@rokeby.ie>
Date: Wed, 26 Dec 2018 21:19:47 +0000
Subject: [PATCH] Don't issue errors for externally-defined env variables.

Fixes: lp:1809300
* https://bugs.launchpad.net/kicad/+bug/1809300
---
 common/dialogs/dialog_configure_paths.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/dialogs/dialog_configure_paths.cpp b/common/dialogs/dialog_configure_paths.cpp
index eb641a2f75..7417af7842 100644
--- a/common/dialogs/dialog_configure_paths.cpp
+++ b/common/dialogs/dialog_configure_paths.cpp
@@ -222,6 +222,10 @@ bool DIALOG_CONFIGURE_PATHS::TransferDataFromWindow()
     {
         wxString name = m_EnvVars->GetCellValue( row, EV_NAME_COL );
         wxString path = m_EnvVars->GetCellValue( row, EV_PATH_COL );
+        wxString external = m_EnvVars->GetCellValue( row, EV_FLAG_COL );
+
+        if( external.Length() )
+            continue;
 
         if( name.IsEmpty() )
         {