diff --git a/examples/streamlineMe/streamlineMe.js b/examples/streamlineMe/streamlineMe.js
index 40565c19..0a15a963 100644
--- a/examples/streamlineMe/streamlineMe.js
+++ b/examples/streamlineMe/streamlineMe.js
@@ -167,7 +167,7 @@ function _transform() {
 	try {
 		var codeOut = Streamline.transform(codeIn, {
 			noHelpers: !_complete,
-			lines: _complete ? "mark" : "ignore"
+			lines: _complete ? "preserve" : "ignore"
 		});
 		$('#codeOut').val(codeOut);
 		info("ready")
diff --git a/lib/callbacks/transform.js b/lib/callbacks/transform.js
index 90b061cc..88f69f50 100644
--- a/lib/callbacks/transform.js
+++ b/lib/callbacks/transform.js
@@ -1376,7 +1376,7 @@ if (typeof exports !== 'undefined') {
 			}
 			options.source = source;
 			options.callback = options.callback || "_";
-			options.lines = options.lines || "mark";
+			options.lines = options.lines || "preserve";
 			//console.log("TRANSFORMING " + options.sourceName)
 			//console.log("source=" + source);
 			var node = parse(source + "\n"); // final newline avoids infinite loop if unterminated string literal at the end
diff --git a/lib/compiler/compile._js b/lib/compiler/compile._js
index 1fc102ce..2ffc4b42 100644
--- a/lib/compiler/compile._js
+++ b/lib/compiler/compile._js
@@ -50,7 +50,7 @@ function _transform(transform, source, options) {
 	}
 	options.source = source;
 	options.callback = options.callback || "_";
-	options.lines = options.lines || "mark";
+	options.lines = options.lines || "preserve";
 	return transform.transform(source, options);
 }
 
@@ -152,7 +152,7 @@ exports.loadFile = function(_, path, options) {
 		mtimejs = mtime(_, js);
 	}
 	mtimejs_ = mtime(_, js_);
-	options.lines = options.lines || (dontSave ? "preserve" : "mark");
+	options.lines = options.lines || "preserve";
 
 	var transform = _getTransform(options);
 	var banner = _banner(transform.version);
@@ -231,7 +231,7 @@ exports.transformModule = function(content, path, options) {
 		mtimejs = mtimeSync(js);
 	}
 	mtimejs_ = mtimeSync(js_);
-	options.lines = options.lines || (dontSave ? "preserve" : "mark");
+	options.lines = options.lines || "preserve";
 
 	var transform = _getTransform(options);
 	var banner = _banner(transform.version);
diff --git a/lib/compiler/compile.js b/lib/compiler/compile.js
index cc588787..dd1d0c7e 100644
--- a/lib/compiler/compile.js
+++ b/lib/compiler/compile.js
@@ -50,7 +50,7 @@ function _transform(transform, source, options) {
 
   options.source = source;
   options.callback = (options.callback || "_");
-  options.lines = (options.lines || "mark");
+  options.lines = (options.lines || "preserve");
   return transform.transform(source, options);};
 
 
@@ -152,7 +152,7 @@ exports.loadFile = function exports_loadFile__2(_, path, options) { var ext, bas
             return mtime(__cb(_, __frame, 22, 12, function ___(__0, __6) { mtimejs = __6; __then(); }, true), js); } ; })(function __$exports_loadFile__2() {
 
           return mtime(__cb(_, __frame, 24, 12, function ___(__0, __7) { mtimejs_ = __7;
-            options.lines = (options.lines || ((dontSave ? "preserve" : "mark")));
+            options.lines = (options.lines || "preserve");
 
             transform = _getTransform(options);
             banner = _banner(transform.version); return (function __$exports_loadFile__2(__then) {
@@ -231,7 +231,7 @@ exports.transformModule = function(content, path, options) {
     mtimejs = mtimeSync(js); };
 
   mtimejs_ = mtimeSync(js_);
-  options.lines = (options.lines || ((dontSave ? "preserve" : "mark")));
+  options.lines = (options.lines || "preserve");
 
   var transform = _getTransform(options);
   var banner = _banner(transform.version);