Replace spurious modes.replace call that Doug, er, warned be about before I committed it.

--HG--
branch : mode-refactoring

common/content/editor.js

@@ -701,7 +701,7 @@ const Editor = Module("editor", {
             function (count) {
                 dactyl.assert(editor.isTextEdit);
                 editor.executeCommand("cmd_cut");
-                modes.replace(modes.INSERT, modes.TEXT_EDIT);
+                modes.push(modes.INSERT);
             });
 
         mappings.add([modes.VISUAL],

common/content/modes.js

@@ -265,8 +265,10 @@ const Modes = Module("modes", {
     },
 
     replace: function (mode, oldMode) {
-        // TODO: This should really be done in one step.
-        this.pop(oldMode);
+        while (oldMode && this._modeStack.length > 1 && this.main != oldMode)
+            this.pop();
+
+        this.set(mode, null, null, { push: this.topOfStack, pop: this._modeStack.pop() });
         this.push(mode);
     },