Use punycode to parse unicode characters correctly

src/core.js

@@ -22,6 +22,8 @@ window.html2canvas = function(nodeList, options) {
     });
 };
 
+window.html2canvas.punycode = this.punycode;
+
 function renderDocument(document, options, windowWidth, windowHeight) {
     return createWindowClone(document, windowWidth, windowHeight, options).then(function(container) {
         log("Document cloned");

src/nodeparser.js

@@ -304,7 +304,11 @@ NodeParser.prototype.paintFormValue = function(container) {
 
 NodeParser.prototype.paintText = function(container) {
     container.applyTextTransform();
-    var textList = container.node.data.split(!this.options.letterRendering || noLetterSpacing(container) ? /(\b| )/ : "");
+    var characters = window.html2canvas.punycode.ucs2.decode(container.node.data);
+    var textList = (!this.options.letterRendering || noLetterSpacing(container)) && !hasUnicode(container.node.data) ? getWords(characters) : characters.map(function(character) {
+        return window.html2canvas.punycode.ucs2.encode([character]);
+    });
+
     var weight = container.parent.fontWeight();
     var size = container.parent.css('fontSize');
     var family = container.parent.css('fontFamily');
@@ -676,3 +680,41 @@ function stripQuotes(content) {
     var first = content.substr(0, 1);
     return (first === content.substr(content.length - 1) && first.match(/'|"/)) ? content.substr(1, content.length - 2) : content;
 }
+
+function getWords(characters) {
+    var words = [], i = 0, onWordBoundary = false, word;
+    while(characters.length) {
+        if (isWordBoundary(characters[i]) === onWordBoundary) {
+            word = characters.splice(0, i);
+            if (word.length) {
+                words.push(window.html2canvas.punycode.ucs2.encode(word));
+            }
+            onWordBoundary =! onWordBoundary;
+            i = 0;
+        } else {
+            i++;
+        }
+
+        if (i >= characters.length) {
+            word = characters.splice(0, i);
+            if (word.length) {
+                words.push(window.html2canvas.punycode.ucs2.encode(word));
+            }
+        }
+    }
+    return words;
+}
+
+function isWordBoundary(characterCode) {
+    return [
+        32, // <space>
+        13, // \r
+        10, // \n
+        9, // \t
+        45 // -
+    ].indexOf(characterCode) !== -1;
+}
+
+function hasUnicode(string) {
+    return /[^\u0000-\u00ff]/.test(string);
+}