Fix carriage-return handling regular expression so it doesn't treat "\r\n" as "\r".

IPython/frontend/html/notebook/static/js/utils.js

@@ -74,6 +74,16 IPython.utils = (function (IPython) {
         return txt;
     }
 
+    // Remove chunks that should be overridden by the effect of
+    // carriage return characters
+    function fixCarriageReturn(txt) {
+        tmp = txt;
+        do {
+            txt = tmp;
+            tmp = txt.replace(/^.*\r(?!\n)/gm, '');
+        } while (tmp.length < txt.length);
+        return txt;
+    }
 
     grow = function(element) {
         // Grow the cell by hand. This is used upon reloading from JSON, when the
@@ -126,4 +136,3 IPython.utils = (function (IPython) {
     };
 
 }(IPython));
-