diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/src/csv/format.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/src/csv/format.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,13 @@
+d3.csv.format = function(rows) {
+  return rows.map(d3_csv_formatRow).join("\n");
+};
+
+function d3_csv_formatRow(row) {
+  return row.map(d3_csv_formatValue).join(",");
+}
+
+function d3_csv_formatValue(text) {
+  return /[",\n]/.test(text)
+      ? "\"" + text.replace(/\"/g, "\"\"") + "\""
+      : text;
+}