No need to replace tabs with spaces in the Flexmi editor
diff --git a/plugins/org.eclipse.epsilon.flexmi.dt/src/org/eclipse/epsilon/flexmi/dt/FlexmiEditor.java b/plugins/org.eclipse.epsilon.flexmi.dt/src/org/eclipse/epsilon/flexmi/dt/FlexmiEditor.java
index ff07c47..f6334b7 100644
--- a/plugins/org.eclipse.epsilon.flexmi.dt/src/org/eclipse/epsilon/flexmi/dt/FlexmiEditor.java
+++ b/plugins/org.eclipse.epsilon.flexmi.dt/src/org/eclipse/epsilon/flexmi/dt/FlexmiEditor.java
@@ -208,7 +208,6 @@
 			Display.getDefault().asyncExec(() -> refreshText());
 		}
 		
-		code = code.replaceAll("\t", "  ");
 		FlexmiParseException parseException = null;
 		
 		ResourceSet resourceSet = new ResourceSetImpl();