MACRO: only retract at end print if extruder can extrude (#56)

configuration/macros.cfg

@@ -1288,6 +1288,13 @@ gcode:
 
 [gcode_macro _END_PRINT_AFTER_HEATERS_OFF]
 gcode:
+	# IDEX mode
+	{% set idex_mode = '' %}
+	{% if printer["dual_carriage"] is defined %}
+		{% set idex_mode = printer["dual_carriage"].carriage_1|lower %}
+		{% set idex_toolhead = 1 if idex_mode == 'primary' else 0 %}
+	{% endif %}
+
 	# Calculate safe Z position
 	{% set max_z = printer.toolhead.axis_maximum.z|float %}
 	{% set current_z = printer.toolhead.position.z|float %}
@@ -1299,14 +1306,30 @@ gcode:
 		{% set z_safe = max_z - current_z %}
 	{% endif %}
 
+	# Can extruder extrude
+	{% set can_extrude = true if printer['extruder'].can_extrude|lower == 'true' else false %}
+	{% if idex_mode != '' %}
+		{% if idex_mode == 'copy' or idex_mode == 'mirror' %}
+			{% set can_extrude = true if printer['extruder'].can_extrude|lower == 'true' and printer['extruder1'].can_extrude|lower == 'true' else false %}
+		{% else %}
+			{% if printer.toolhead.extruder == 'extruder1' %}
+				{% set can_extrude = true if printer['extruder1'].can_extrude|lower == 'true' else false %}
+			{% endif %}
+		{% endif %}
+	{% endif %}
+
 	# Relative positioning
 	G91
 	# Retract the filament a bit before lifting the nozzle.
-	G1 E-2 F3600
+	{% if can_extrude %}
+		G1 E-2 F3600
+	{% endif %}
 	# Move to safe Z position
 	G0 Z{z_safe} F3600
 	# Retract filament even more
-	G1 E-{(r-2)} F3600
+	{% if can_extrude %}
+		G1 E-{(r-2)} F3600
+	{% endif %}
 	# Back to absolute positioning
 	G90