Quote boolean values when dumping strings

Source of regex: http://yaml.org/type/bool.html
nodeca · Jun 6, 2013 · 6830867 · 6830867
1 parent 454c7e7
commit 6830867
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/lib/js-yaml/dumper.js b/lib/js-yaml/dumper.js
@@ -161,11 +161,12 @@ function dump(input, options) {
   }
 
   function writeScalar(object) {
-    var isQuoted, checkpoint, position, length, character;
+    var isQuoted, checkpoint, position, length, character, booleans;
 
     result = '';
     isQuoted = false;
     checkpoint = 0;
+    booleans = /^(y|Y|yes|Yes|YES|n|N|no|No|NO|true|True|TRUE|false|False|FALSE|on|On|ON|off|Off|OFF)$/;
 
     if (0          === object.length ||
         CHAR_SPACE === object.charCodeAt(0) ||
@@ -224,6 +225,10 @@ function dump(input, options) {
       isQuoted = true;
     }
 
+    if (!isQuoted && booleans.test(object)) {
+      isQuoted = true;
+    }
+
     if (isQuoted) {
       result = '"' + result + '"';
     }