From b9d375652c9adfe6b410ea4f4042644c87f102cc Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Thu, 25 Aug 2016 02:57:29 +0000
Subject: [PATCH] Recognize .ngc as a valid G-Code export extension.

---
 src/export.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/export.cpp b/src/export.cpp
index ba6667f..e2f20b1 100644
--- a/src/export.cpp
+++ b/src/export.cpp
@@ -628,13 +628,13 @@ VectorFileWriter *VectorFileWriter::ForFile(const std::string &filename) {
     } else if(FilenameHasExtension(filename, ".step")||FilenameHasExtension(filename, ".stp")) {
         static Step2dFileWriter Step2dWriter;
         ret = &Step2dWriter;
-    } else if(FilenameHasExtension(filename, ".txt")) {
+    } else if(FilenameHasExtension(filename, ".txt")||FilenameHasExtension(filename, ".ngc")) {
         static GCodeFileWriter GCodeWriter;
         ret = &GCodeWriter;
     } else {
         Error("Can't identify output file type from file extension of "
         "filename '%s'; try "
-        ".step, .stp, .dxf, .svg, .plt, .hpgl, .pdf, .txt, "
+        ".step, .stp, .dxf, .svg, .plt, .hpgl, .pdf, .txt, .ngc, "
         ".eps, or .ps.",
             filename.c_str());
         return NULL;