diff --git a/lib/js-yaml/dumper.js b/lib/js-yaml/dumper.js
index 86f34794..41119d48 100644
--- a/lib/js-yaml/dumper.js
+++ b/lib/js-yaml/dumper.js
@@ -116,7 +116,7 @@ function State(options) {
   this.noRefs        = options['noRefs'] || false;
   this.noCompatMode  = options['noCompatMode'] || false;
   this.condenseFlow  = options['condenseFlow'] || false;
-
+  this.forceStyleLiteral = options['forceStyleLiteral'] || false;
   this.implicitTypes = this.schema.compiledImplicit;
   this.explicitTypes = this.schema.compiledExplicit;
 
@@ -254,7 +254,7 @@ var STYLE_PLAIN   = 1,
 //    STYLE_PLAIN or STYLE_SINGLE => no \n are in the string.
 //    STYLE_LITERAL => no lines are suitable for folding (or lineWidth is -1).
 //    STYLE_FOLDED => a line > lineWidth and can be folded (and lineWidth != -1).
-function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth, testAmbiguousType) {
+function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth, testAmbiguousType, forceStyleLiteral) {
   var i;
   var char;
   var hasLineBreak = false;
@@ -270,6 +270,9 @@ function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth, te
     for (i = 0; i < string.length; i++) {
       char = string.charCodeAt(i);
       if (!isPrintable(char)) {
+        if (forceStyleLiteral) {
+          return STYLE_LITERAL;
+        }
         return STYLE_DOUBLE;
       }
       plain = plain && isPlainSafe(char);
@@ -289,6 +292,9 @@ function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth, te
           previousLineBreak = i;
         }
       } else if (!isPrintable(char)) {
+        if (forceStyleLiteral) {
+          return STYLE_LITERAL;
+        }
         return STYLE_DOUBLE;
       }
       plain = plain && isPlainSafe(char);
@@ -351,7 +357,8 @@ function writeScalar(state, string, level, iskey) {
       return testImplicitResolving(state, string);
     }
 
-    switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth, testAmbiguity)) {
+    switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth, testAmbiguity,
+      state.forceStyleLiteral)) {
       case STYLE_PLAIN:
         return string;
       case STYLE_SINGLE: