--- a/js/flotr2/examples/lib/codemirror/keymap/emacs.js
+++ b/js/flotr2/examples/lib/codemirror/keymap/emacs.js
@@ -1,1 +1,30 @@
+// TODO number prefixes
+(function() {
+  // Really primitive kill-ring implementation.
+  var killRing = [];
+  function addToRing(str) {
+    killRing.push(str);
+    if (killRing.length > 50) killRing.shift();
+  }
+  function getFromRing() { return killRing[killRing.length - 1] || ""; }
+  function popFromRing() { if (killRing.length > 1) killRing.pop(); return getFromRing(); }
 
+  CodeMirror.keyMap.emacs = {
+    "Ctrl-X": function(cm) {cm.setOption("keyMap", "emacs-Ctrl-X");},
+    "Ctrl-W": function(cm) {addToRing(cm.getSelection()); cm.replaceSelection("");},
+    "Ctrl-Alt-W": function(cm) {addToRing(cm.getSelection()); cm.replaceSelection("");},
+    "Alt-W": function(cm) {addToRing(cm.getSelection());},
+    "Ctrl-Y": function(cm) {cm.replaceSelection(getFromRing());},
+    "Alt-Y": function(cm) {cm.replaceSelection(popFromRing());},
+    "Ctrl-/": "undo", "Shift-Ctrl--": "undo", "Shift-Alt-,": "goDocStart", "Shift-Alt-.": "goDocEnd",
+    "Ctrl-S": "findNext", "Ctrl-R": "findPrev", "Ctrl-G": "clearSearch", "Shift-Alt-5": "replace",
+    "Ctrl-Z": "undo", "Cmd-Z": "undo",
+    fallthrough: ["basic", "emacsy"]
+  };
+
+  CodeMirror.keyMap["emacs-Ctrl-X"] = {
+    "Ctrl-S": "save", "Ctrl-W": "save", "S": "saveAll", "F": "open", "U": "undo", "K": "close",
+    auto: "emacs", catchall: function(cm) {/*ignore*/}
+  };
+})();
+