diff --git a/app/scripts/comp/auto-type/auto-type-runner.js b/app/scripts/comp/auto-type/auto-type-runner.js
index 33736854..06a60ece 100644
--- a/app/scripts/comp/auto-type/auto-type-runner.js
+++ b/app/scripts/comp/auto-type/auto-type-runner.js
@@ -128,7 +128,11 @@ AutoTypeRunner.prototype.tryParseCommand = function(op) {
         case 'clearfield':
             // {CLEARFIELD}
             op.type = 'group';
-            op.value = [{ type: 'key', value: 'a', mod: { '^': true } }, { type: 'key', value: 'bs' }];
+            op.value = [
+                { type: 'key', value: 'end' },
+                { type: 'key', value: 'home', mod: { '+': true } },
+                { type: 'key', value: 'bs' }
+            ];
             return true;
         case 'vkey':
             // {VKEY 10} {VKEY 0x1F}
@@ -310,10 +314,14 @@ AutoTypeRunner.prototype.run = function(callback) {
         mod: {},
         activeMod: {}
     };
-    this.emitNext(this.ops);
+    this.emitNext();
 };
 
-AutoTypeRunner.prototype.emitNext = function() {
+AutoTypeRunner.prototype.emitNext = function(err) {
+    if (err) {
+        this.emitterState.callback(err);
+        return;
+    }
     this.resetEmitterMod(this.emitterState.mod);
     if (this.emitterState.opIx >= this.emitterState.ops.length) {
         var state = this.emitterState.stack.pop();
diff --git a/app/scripts/comp/auto-type/emitter-impl/auto-type-emitter-impl-darwin.js b/app/scripts/comp/auto-type/emitter-impl/auto-type-emitter-impl-darwin.js
index 66d74b8e..8dc9984b 100644
--- a/app/scripts/comp/auto-type/emitter-impl/auto-type-emitter-impl-darwin.js
+++ b/app/scripts/comp/auto-type/emitter-impl/auto-type-emitter-impl-darwin.js
@@ -1,21 +1,77 @@
 'use strict';
 
+var Launcher = require('../../launcher');
+
+var spawn = Launcher.req('child_process').spawn;
+
+var KeyMap = {
+    tab: 48, enter: 36, space: 49,
+    up: 126, down: 125, left: 123, right: 124, home: 115, end: 119, pgup: 116, pgdn: 121,
+    ins: 114, del: 117, bs: 51, esc: 53,
+    win: 55, rwin: 55,
+    f1: 122, f2: 120, f3: 99, f4: 118, f5: 96, f6: 97, f7: 98, f8: 100, f9: 101,
+    f10: 109, f11: 103, f12: 111, f13: 105, f14: 107, f15: 113, f16: 106,
+    add: 69, subtract: 78, multiply: 67, divide: 75,
+    n0: 82, n1: 83, n2: 84, n3: 85, n4: 86,
+    n5: 87, n6: 88, n7: 89, n8: 91, n9: 92
+};
+
+var ModMap = {
+    '^': 'command',
+    '+': 'shift',
+    '%': 'option',
+    '^^': 'control'
+};
+
 var AutoTypeEmitterImpl = function() {
+    this.mod = {};
 };
 
 AutoTypeEmitterImpl.prototype.setMod = function(mod, enabled) {
+    if (enabled) {
+        this.mod[mod] = true;
+    } else {
+        delete this.mod[mod];
+    }
 };
 
 AutoTypeEmitterImpl.prototype.text = function(text, callback) {
-    callback();
+    if (!text) {
+        return callback();
+    }
+    text = text.replace(/"/g, '\\"');
+    this.runScript('keystroke "' + text + '"'+ this.modString(), callback);
 };
 
 AutoTypeEmitterImpl.prototype.key = function(key, callback) {
-    callback();
+    if (typeof key !== 'number') {
+        if (!KeyMap[key]) {
+            return callback('Bad key: ' + key);
+        }
+        key = KeyMap[key];
+    }
+    this.runScript('key code ' + key + this.modString(), callback);
 };
 
 AutoTypeEmitterImpl.prototype.waitComplete = function(callback) {
     callback();
 };
 
+AutoTypeEmitterImpl.prototype.modString = function() {
+    var keys = Object.keys(this.mod);
+    if (!keys.length) {
+        return '';
+    }
+    return ' using {' + keys.map(AutoTypeEmitterImpl.prototype.mapMod).join(', ') + '}';
+};
+
+AutoTypeEmitterImpl.prototype.mapMod = function(mod) {
+    return ModMap[mod] + ' down';
+};
+
+AutoTypeEmitterImpl.prototype.runScript = function(script, callback) {
+    var ps = spawn('osascript', ['-e', 'tell application "System Events" to ' + script]);
+    ps.on('close', function(code) { callback(code ? 'Exit code ' + code : undefined); });
+};
+
 module.exports = AutoTypeEmitterImpl;