From 49ff9a0ebecb57341f93b6c7689b45adb803e2b7 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Tue, 1 May 2012 14:49:41 +0200
Subject: [PATCH] Emit G92 E0 when in relative mode. #322

---
 lib/Slic3r/Print.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Slic3r/Print.pm b/lib/Slic3r/Print.pm
index d8f347269..6c1be7b1b 100644
--- a/lib/Slic3r/Print.pm
+++ b/lib/Slic3r/Print.pm
@@ -406,7 +406,8 @@ sub write_gcode {
     print  $fh "G90 ; use absolute coordinates\n";
     print  $fh "G21 ; set units to millimeters\n";
     if ($Slic3r::gcode_flavor =~ /^(?:reprap|teacup)$/) {
-        printf $fh "G92 %s0 ; reset extrusion distance\n", $Slic3r::extrusion_axis if $Slic3r::extrusion_axis;
+        printf $fh "G92 %s0 ; reset extrusion distance\n", $Slic3r::extrusion_axis
+            if $Slic3r::extrusion_axis && !$Slic3r::use_relative_e_distances;
         if ($Slic3r::gcode_flavor =~ /^(?:reprap|makerbot)$/) {
             if ($Slic3r::use_relative_e_distances) {
                 print $fh "M83 ; use relative distances for extrusion\n";