From 18e12d61a0399298856591dd7553d5fedc048fe0 Mon Sep 17 00:00:00 2001
From: Florian Mounier <florian.mounier@kozea.fr>
Date: Thu, 16 Jan 2014 18:01:36 +0100
Subject: [PATCH] And... done

---
 app/routes.py                   |   28 +-
 app/static/coffees/main.coffee  |   61 +-
 app/static/javascripts/main.js  |   64 +-
 app/static/javascripts/term.js  | 5756 +++++++++++++++++++++++++++++++
 app/static/sass/main.sass       |   16 +-
 app/static/stylesheets/main.css |   25 +-
 app/templates/index.html        |    5 +-
 7 files changed, 5877 insertions(+), 78 deletions(-)
 create mode 100644 app/static/javascripts/term.js

diff --git a/app/routes.py b/app/routes.py
index 5d90e52..ae04666 100644
--- a/app/routes.py
+++ b/app/routes.py
@@ -3,7 +3,6 @@ import os
 import io
 import sys
 import struct
-import signal
 import fcntl
 import termios
 import tornado.websocket
@@ -24,9 +23,7 @@ class Index(Route):
 @url(r'/ws')
 class TermWebSocket(Route, tornado.websocket.WebSocketHandler):
 
-    def open(self):
-        self.log.info('Websocket opened')
-
+    def pty(self):
         pid, fd = pty.fork()
         if pid == 0:
             # Child
@@ -79,10 +76,22 @@ class TermWebSocket(Route, tornado.websocket.WebSocketHandler):
             )
             ioloop.add_handler(fd, self.shell, ioloop.READ)
 
+    def open(self):
+        self.log.info('Websocket opened')
+        self.pty()
+
     def on_message(self, message):
-        self.log.info('WRIT<%s' % message)
-        self.writer.write(message)
-        self.writer.flush()
+        if message.startswith('RS|'):
+            message = message[3:]
+            cols, rows = map(int, message.split(','))
+            s = struct.pack("HHHH", rows, cols, 0, 0)
+            fcntl.ioctl(self.fd, termios.TIOCSWINSZ, s)
+            self.log.info('SIZE (%d, %d)' % (cols, rows))
+        elif message.startswith('SH|'):
+            message = message[3:]
+            self.log.info('WRIT<%r' % message)
+            self.writer.write(message)
+            self.writer.flush()
 
     def shell(self, fd, events):
         if events & ioloop.READ:
@@ -90,15 +99,16 @@ class TermWebSocket(Route, tornado.websocket.WebSocketHandler):
             try:
                 read = self.reader.read()
             except IOError:
-                self.log.info('READ>%s' % read)
+                self.log.info('READ>%r' % read)
                 self.write_message('Exited')
                 return
 
-            self.log.info('READ>%s' % read)
+            self.log.info('READ>%r' % read)
             self.write_message(read)
 
     def on_close(self):
         self.writer.write('')
+        self.writer.flush()
         os.close(self.fd)
         os.waitpid(self.pid, 0)
         self.log.info('Websocket closed')
diff --git a/app/static/coffees/main.coffee b/app/static/coffees/main.coffee
index b3303d4..1d6d4a0 100644
--- a/app/static/coffees/main.coffee
+++ b/app/static/coffees/main.coffee
@@ -1,27 +1,48 @@
-ws = null
+term = ws = null
+cols = rows = null
 
 $ ->
+
     ws = new WebSocket 'ws://' + document.location.host + '/ws'
-    ws.onopen = -> console.log "WebSocket open", arguments
-    ws.onclose = -> console.log "WebSocket closed", arguments
+    ws.onopen = ->
+        console.log "WebSocket open", arguments
+        term = new Terminal(
+          visualBell: true
+          screenKeys: true
+        )
+        term.on "data", (data) ->
+          ws.send 'SH|' + data
+
+        term.on "title", (title) ->
+          document.title = title
+
+        term.open $('main').get(0)
+        $('.terminal').attr('style', '')
+        $(window).trigger 'resize'
+
+
+    ws.onclose = ->
+        if term
+            term.destroy()
+        console.log "WebSocket closed", arguments
+
     ws.onerror = -> console.log "WebSocket error", arguments
     ws.onmessage = (event) ->
-        $('.term code').html($('.term code').html() + event.data)
+        term.write event.data
 
-    $('html,body').on('keypress', (event) ->
-        code = event.keyCode
-        ws.send(String.fromCharCode(code))
-        event.preventDefault()
-        event.stopPropagation()
-        return false
-    ).on('keydown', (event) ->
-        code = event.keyCode
-        return if code == 17
-        if event.ctrlKey
-            code -= 64
-            ws.send(String.fromCharCode(code))
+    $(window).resize ->
+        $main = $('main')
+        $termtest = $('<div>').addClass('terminal')
+        $test = $('<div>').css(display: 'inline-block').text('0123456789')
+        $termtest.append($test)
 
-            event.preventDefault()
-            event.stopPropagation()
-            return false
-    )
+        $main.append($termtest)
+        ew = $test.outerWidth() / 10
+        eh = $test.outerHeight()
+        $termtest.remove()
+        w = $main.outerWidth()
+        h = $main.outerHeight()
+        cols = Math.floor(w / ew)
+        rows = Math.floor(h / eh)
+        term.resize cols, rows
+        ws.send "RS|#{cols},#{rows}"
diff --git a/app/static/javascripts/main.js b/app/static/javascripts/main.js
index f1d30e8..5ed8d45 100644
--- a/app/static/javascripts/main.js
+++ b/app/static/javascripts/main.js
@@ -1,41 +1,57 @@
 // Generated by CoffeeScript 1.6.3
-var ws;
+var cols, rows, term, ws;
 
-ws = null;
+term = ws = null;
+
+cols = rows = null;
 
 $(function() {
   ws = new WebSocket('ws://' + document.location.host + '/ws');
   ws.onopen = function() {
-    return console.log("WebSocket open", arguments);
+    console.log("WebSocket open", arguments);
+    term = new Terminal({
+      visualBell: true,
+      screenKeys: true
+    });
+    term.on("data", function(data) {
+      return ws.send('SH|' + data);
+    });
+    term.on("title", function(title) {
+      return document.title = title;
+    });
+    term.open($('main').get(0));
+    $('.terminal').attr('style', '');
+    return $(window).trigger('resize');
   };
   ws.onclose = function() {
+    if (term) {
+      term.destroy();
+    }
     return console.log("WebSocket closed", arguments);
   };
   ws.onerror = function() {
     return console.log("WebSocket error", arguments);
   };
   ws.onmessage = function(event) {
-    return $('.term code').html($('.term code').html() + event.data);
+    return term.write(event.data);
   };
-  return $('html,body').on('keypress', function(event) {
-    var code;
-    code = event.keyCode;
-    ws.send(String.fromCharCode(code));
-    event.preventDefault();
-    event.stopPropagation();
-    return false;
-  }).on('keydown', function(event) {
-    var code;
-    code = event.keyCode;
-    if (code === 17) {
-      return;
-    }
-    if (event.ctrlKey) {
-      code -= 64;
-      ws.send(String.fromCharCode(code));
-      event.preventDefault();
-      event.stopPropagation();
-      return false;
-    }
+  return $(window).resize(function() {
+    var $main, $termtest, $test, eh, ew, h, w;
+    $main = $('main');
+    $termtest = $('<div>').addClass('terminal');
+    $test = $('<div>').css({
+      display: 'inline-block'
+    }).text('0123456789');
+    $termtest.append($test);
+    $main.append($termtest);
+    ew = $test.outerWidth() / 10;
+    eh = $test.outerHeight();
+    $termtest.remove();
+    w = $main.outerWidth();
+    h = $main.outerHeight();
+    cols = Math.floor(w / ew);
+    rows = Math.floor(h / eh);
+    term.resize(cols, rows);
+    return ws.send("RS|" + cols + "," + rows);
   });
 });
diff --git a/app/static/javascripts/term.js b/app/static/javascripts/term.js
new file mode 100644
index 0000000..92fe7cb
--- /dev/null
+++ b/app/static/javascripts/term.js
@@ -0,0 +1,5756 @@
+/**
+ * term.js - an xterm emulator
+ * Copyright (c) 2012-2013, Christopher Jeffrey (MIT License)
+ * https://github.com/chjj/term.js
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * Originally forked from (with the author's permission):
+ *   Fabrice Bellard's javascript vt100 for jslinux:
+ *   http://bellard.org/jslinux/
+ *   Copyright (c) 2011 Fabrice Bellard
+ *   The original design remains. The terminal itself
+ *   has been extended to include xterm CSI codes, among
+ *   other features.
+ */
+
+;(function() {
+
+/**
+ * Terminal Emulation References:
+ *   http://vt100.net/
+ *   http://invisible-island.net/xterm/ctlseqs/ctlseqs.txt
+ *   http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
+ *   http://invisible-island.net/vttest/
+ *   http://www.inwap.com/pdp10/ansicode.txt
+ *   http://linux.die.net/man/4/console_codes
+ *   http://linux.die.net/man/7/urxvt
+ */
+
+'use strict';
+
+/**
+ * Shared
+ */
+
+var window = this
+  , document = this.document;
+
+/**
+ * EventEmitter
+ */
+
+function EventEmitter() {
+  this._events = this._events || {};
+}
+
+EventEmitter.prototype.addListener = function(type, listener) {
+  this._events[type] = this._events[type] || [];
+  this._events[type].push(listener);
+};
+
+EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+
+EventEmitter.prototype.removeListener = function(type, listener) {
+  if (!this._events[type]) return;
+
+  var obj = this._events[type]
+    , i = obj.length;
+
+  while (i--) {
+    if (obj[i] === listener || obj[i].listener === listener) {
+      obj.splice(i, 1);
+      return;
+    }
+  }
+};
+
+EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
+
+EventEmitter.prototype.removeAllListeners = function(type) {
+  if (this._events[type]) delete this._events[type];
+};
+
+EventEmitter.prototype.once = function(type, listener) {
+  function on() {
+    var args = Array.prototype.slice.call(arguments);
+    this.removeListener(type, on);
+    return listener.apply(this, args);
+  }
+  on.listener = listener;
+  return this.on(type, on);
+};
+
+EventEmitter.prototype.emit = function(type) {
+  if (!this._events[type]) return;
+
+  var args = Array.prototype.slice.call(arguments, 1)
+    , obj = this._events[type]
+    , l = obj.length
+    , i = 0;
+
+  for (; i < l; i++) {
+    obj[i].apply(this, args);
+  }
+};
+
+EventEmitter.prototype.listeners = function(type) {
+  return this._events[type] = this._events[type] || [];
+};
+
+/**
+ * States
+ */
+
+var normal = 0
+  , escaped = 1
+  , csi = 2
+  , osc = 3
+  , charset = 4
+  , dcs = 5
+  , ignore = 6;
+
+/**
+ * Terminal
+ */
+
+function Terminal(options) {
+  var self = this;
+
+  if (!(this instanceof Terminal)) {
+    return new Terminal(arguments[0], arguments[1], arguments[2]);
+  }
+
+  EventEmitter.call(this);
+
+  if (typeof options === 'number') {
+    options = {
+      cols: arguments[0],
+      rows: arguments[1],
+      handler: arguments[2]
+    };
+  }
+
+  options = options || {};
+
+  each(keys(Terminal.defaults), function(key) {
+    if (options[key] == null) {
+      options[key] = Terminal.options[key];
+      // Legacy:
+      if (Terminal[key] !== Terminal.defaults[key]) {
+        options[key] = Terminal[key];
+      }
+    }
+    self[key] = options[key];
+  });
+
+  if (options.colors.length === 8) {
+    options.colors = options.colors.concat(Terminal._colors.slice(8));
+  } else if (options.colors.length === 16) {
+    options.colors = options.colors.concat(Terminal._colors.slice(16));
+  } else if (options.colors.length === 10) {
+    options.colors = options.colors.slice(0, -2).concat(
+      Terminal._colors.slice(8, -2), options.colors.slice(-2));
+  } else if (options.colors.length === 18) {
+    options.colors = options.colors.concat(
+      Terminal._colors.slice(16, -2), options.colors.slice(-2));
+  }
+  this.colors = options.colors;
+
+  this.options = options;
+
+  // this.context = options.context || window;
+  // this.document = options.document || document;
+  this.parent = options.body || options.parent
+    || (document ? document.getElementsByTagName('body')[0] : null);
+
+  this.cols = options.cols || options.geometry[0];
+  this.rows = options.rows || options.geometry[1];
+
+  if (options.handler) {
+    this.on('data', options.handler);
+  }
+
+  this.ybase = 0;
+  this.ydisp = 0;
+  this.x = 0;
+  this.y = 0;
+  this.cursorState = 0;
+  this.cursorHidden = false;
+  this.convertEol;
+  this.state = 0;
+  this.queue = '';
+  this.scrollTop = 0;
+  this.scrollBottom = this.rows - 1;
+
+  // modes
+  this.applicationKeypad = false;
+  this.applicationCursor = false;
+  this.originMode = false;
+  this.insertMode = false;
+  this.wraparoundMode = false;
+  this.normal = null;
+
+  // select modes
+  this.prefixMode = false;
+  this.selectMode = false;
+  this.visualMode = false;
+  this.searchMode = false;
+  this.searchDown;
+  this.entry = '';
+  this.entryPrefix = 'Search: ';
+  this._real;
+  this._selected;
+  this._textarea;
+
+  // charset
+  this.charset = null;
+  this.gcharset = null;
+  this.glevel = 0;
+  this.charsets = [null];
+
+  // mouse properties
+  this.decLocator;
+  this.x10Mouse;
+  this.vt200Mouse;
+  this.vt300Mouse;
+  this.normalMouse;
+  this.mouseEvents;
+  this.sendFocus;
+  this.utfMouse;
+  this.sgrMouse;
+  this.urxvtMouse;
+
+  // misc
+  this.element;
+  this.children;
+  this.refreshStart;
+  this.refreshEnd;
+  this.savedX;
+  this.savedY;
+  this.savedCols;
+
+  // stream
+  this.readable = true;
+  this.writable = true;
+
+  this.defAttr = (0 << 18) | (257 << 9) | (256 << 0);
+  this.curAttr = this.defAttr;
+
+  this.params = [];
+  this.currentParam = 0;
+  this.prefix = '';
+  this.postfix = '';
+
+  this.lines = [];
+  var i = this.rows;
+  while (i--) {
+    this.lines.push(this.blankLine());
+  }
+
+  this.tabs;
+  this.setupStops();
+}
+
+inherits(Terminal, EventEmitter);
+
+// back_color_erase feature for xterm.
+Terminal.prototype.eraseAttr = function() {
+  // if (this.is('screen')) return this.defAttr;
+  return (this.defAttr & ~0x1ff) | (this.curAttr & 0x1ff);
+};
+
+/**
+ * Colors
+ */
+
+// Colors 0-15
+Terminal.tangoColors = [
+  // dark:
+  '#2e3436',
+  '#cc0000',
+  '#4e9a06',
+  '#c4a000',
+  '#3465a4',
+  '#75507b',
+  '#06989a',
+  '#d3d7cf',
+  // bright:
+  '#555753',
+  '#ef2929',
+  '#8ae234',
+  '#fce94f',
+  '#729fcf',
+  '#ad7fa8',
+  '#34e2e2',
+  '#eeeeec'
+];
+
+Terminal.xtermColors = [
+  // dark:
+  '#000000', // black
+  '#cd0000', // red3
+  '#00cd00', // green3
+  '#cdcd00', // yellow3
+  '#0000ee', // blue2
+  '#cd00cd', // magenta3
+  '#00cdcd', // cyan3
+  '#e5e5e5', // gray90
+  // bright:
+  '#7f7f7f', // gray50
+  '#ff0000', // red
+  '#00ff00', // green
+  '#ffff00', // yellow
+  '#5c5cff', // rgb:5c/5c/ff
+  '#ff00ff', // magenta
+  '#00ffff', // cyan
+  '#ffffff'  // white
+];
+
+// Colors 0-15 + 16-255
+// Much thanks to TooTallNate for writing this.
+Terminal.colors = (function() {
+  var colors = Terminal.tangoColors.slice()
+    , r = [0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff]
+    , i;
+
+  // 16-231
+  i = 0;
+  for (; i < 216; i++) {
+    out(r[(i / 36) % 6 | 0], r[(i / 6) % 6 | 0], r[i % 6]);
+  }
+
+  // 232-255 (grey)
+  i = 0;
+  for (; i < 24; i++) {
+    r = 8 + i * 10;
+    out(r, r, r);
+  }
+
+  function out(r, g, b) {
+    colors.push('#' + hex(r) + hex(g) + hex(b));
+  }
+
+  function hex(c) {
+    c = c.toString(16);
+    return c.length < 2 ? '0' + c : c;
+  }
+
+  return colors;
+})();
+
+// Default BG/FG
+Terminal.colors[256] = '#000000';
+Terminal.colors[257] = '#f0f0f0';
+
+Terminal._colors = Terminal.colors.slice();
+
+Terminal.vcolors = (function() {
+  var out = []
+    , colors = Terminal.colors
+    , i = 0
+    , color;
+
+  for (; i < 256; i++) {
+    color = parseInt(colors[i].substring(1), 16);
+    out.push([
+      (color >> 16) & 0xff,
+      (color >> 8) & 0xff,
+      color & 0xff
+    ]);
+  }
+
+  return out;
+})();
+
+/**
+ * Options
+ */
+
+Terminal.defaults = {
+  colors: Terminal.colors,
+  convertEol: false,
+  termName: 'xterm',
+  geometry: [80, 24],
+  cursorBlink: true,
+  visualBell: false,
+  popOnBell: false,
+  scrollback: 1000,
+  screenKeys: false,
+  debug: false,
+  useStyle: false
+  // programFeatures: false,
+  // focusKeys: false,
+};
+
+Terminal.options = {};
+
+each(keys(Terminal.defaults), function(key) {
+  Terminal[key] = Terminal.defaults[key];
+  Terminal.options[key] = Terminal.defaults[key];
+});
+
+/**
+ * Focused Terminal
+ */
+
+Terminal.focus = null;
+
+Terminal.prototype.focus = function() {
+  if (Terminal.focus === this) return;
+
+  if (Terminal.focus) {
+    Terminal.focus.blur();
+  }
+
+  if (this.sendFocus) this.send('\x1b[I');
+  this.showCursor();
+
+  // try {
+  //   this.element.focus();
+  // } catch (e) {
+  //   ;
+  // }
+
+  // this.emit('focus');
+
+  Terminal.focus = this;
+};
+
+Terminal.prototype.blur = function() {
+  if (Terminal.focus !== this) return;
+
+  this.cursorState = 0;
+  this.refresh(this.y, this.y);
+  if (this.sendFocus) this.send('\x1b[O');
+
+  // try {
+  //   this.element.blur();
+  // } catch (e) {
+  //   ;
+  // }
+
+  // this.emit('blur');
+
+  Terminal.focus = null;
+};
+
+/**
+ * Initialize global behavior
+ */
+
+Terminal.prototype.initGlobal = function() {
+  var document = this.document;
+
+  Terminal._boundDocs = Terminal._boundDocs || [];
+  if (~indexOf(Terminal._boundDocs, document)) {
+    return;
+  }
+  Terminal._boundDocs.push(document);
+
+  Terminal.bindPaste(document);
+
+  Terminal.bindKeys(document);
+
+  Terminal.bindCopy(document);
+
+  if (this.isIpad || this.isIphone) {
+    Terminal.fixIpad(document);
+  }
+
+  if (this.useStyle) {
+    Terminal.insertStyle(document, this.colors[256], this.colors[257]);
+  }
+};
+
+/**
+ * Bind to paste event
+ */
+
+Terminal.bindPaste = function(document) {
+  // This seems to work well for ctrl-V and middle-click,
+  // even without the contentEditable workaround.
+  var window = document.defaultView;
+  on(window, 'paste', function(ev) {
+    var term = Terminal.focus;
+    if (!term) return;
+    if (ev.clipboardData) {
+      term.send(ev.clipboardData.getData('text/plain'));
+    } else if (term.context.clipboardData) {
+      term.send(term.context.clipboardData.getData('Text'));
+    }
+    // Not necessary. Do it anyway for good measure.
+    term.element.contentEditable = 'inherit';
+    return cancel(ev);
+  });
+};
+
+/**
+ * Global Events for key handling
+ */
+
+Terminal.bindKeys = function(document) {
+  // We should only need to check `target === body` below,
+  // but we can check everything for good measure.
+  on(document, 'keydown', function(ev) {
+    if (!Terminal.focus) return;
+    var target = ev.target || ev.srcElement;
+    if (!target) return;
+    if (target === Terminal.focus.element
+        || target === Terminal.focus.context
+        || target === Terminal.focus.document
+        || target === Terminal.focus.body
+        || target === Terminal._textarea
+        || target === Terminal.focus.parent) {
+      return Terminal.focus.keyDown(ev);
+    }
+  }, true);
+
+  on(document, 'keypress', function(ev) {
+    if (!Terminal.focus) return;
+    var target = ev.target || ev.srcElement;
+    if (!target) return;
+    if (target === Terminal.focus.element
+        || target === Terminal.focus.context
+        || target === Terminal.focus.document
+        || target === Terminal.focus.body
+        || target === Terminal._textarea
+        || target === Terminal.focus.parent) {
+      return Terminal.focus.keyPress(ev);
+    }
+  }, true);
+
+  // If we click somewhere other than a
+  // terminal, unfocus the terminal.
+  on(document, 'mousedown', function(ev) {
+    if (!Terminal.focus) return;
+
+    var el = ev.target || ev.srcElement;
+    if (!el) return;
+
+    do {
+      if (el === Terminal.focus.element) return;
+    } while (el = el.parentNode);
+
+    Terminal.focus.blur();
+  });
+};
+
+/**
+ * Copy Selection w/ Ctrl-C (Select Mode)
+ */
+
+Terminal.bindCopy = function(document) {
+  var window = document.defaultView;
+
+  // if (!('onbeforecopy' in document)) {
+  //   // Copies to *only* the clipboard.
+  //   on(window, 'copy', function fn(ev) {
+  //     var term = Terminal.focus;
+  //     if (!term) return;
+  //     if (!term._selected) return;
+  //     var text = term.grabText(
+  //       term._selected.x1, term._selected.x2,
+  //       term._selected.y1, term._selected.y2);
+  //     term.emit('copy', text);
+  //     ev.clipboardData.setData('text/plain', text);
+  //   });
+  //   return;
+  // }
+
+  // Copies to primary selection *and* clipboard.
+  // NOTE: This may work better on capture phase,
+  // or using the `beforecopy` event.
+  on(window, 'copy', function(ev) {
+    var term = Terminal.focus;
+    if (!term) return;
+    if (!term._selected) return;
+    var textarea = term.getCopyTextarea();
+    var text = term.grabText(
+      term._selected.x1, term._selected.x2,
+      term._selected.y1, term._selected.y2);
+    term.emit('copy', text);
+    textarea.focus();
+    textarea.textContent = text;
+    textarea.value = text;
+    textarea.setSelectionRange(0, text.length);
+    setTimeout(function() {
+      term.element.focus();
+      term.focus();
+    }, 1);
+  });
+};
+
+/**
+ * Fix iPad - no idea if this works
+ */
+
+Terminal.fixIpad = function(document) {
+  var textarea = document.createElement('textarea');
+  textarea.style.position = 'absolute';
+  textarea.style.left = '-32000px';
+  textarea.style.top = '-32000px';
+  textarea.style.width = '0px';
+  textarea.style.height = '0px';
+  textarea.style.opacity = '0';
+  textarea.style.backgroundColor = 'transparent';
+  textarea.style.borderStyle = 'none';
+  textarea.style.outlineStyle = 'none';
+  textarea.autocapitalize='none';
+  textarea.autocorrect='off';
+
+  document.getElementsByTagName('body')[0].appendChild(textarea);
+
+  Terminal._textarea = textarea;
+
+  setTimeout(function() {
+    textarea.focus();
+  }, 1000);
+};
+
+/**
+ * Insert a default style
+ */
+
+Terminal.insertStyle = function(document, bg, fg) {
+  var style = document.getElementById('term-style');
+  if (style) return;
+
+  var head = document.getElementsByTagName('head')[0];
+  if (!head) return;
+
+  var style = document.createElement('style');
+  style.id = 'term-style';
+
+  // textContent doesn't work well with IE for <style> elements.
+  style.innerHTML = ''
+    + '.terminal {\n'
+    + '  float: left;\n'
+    + '  border: ' + bg + ' solid 5px;\n'
+    + '  font-family: "DejaVu Sans Mono", "Liberation Mono", monospace;\n'
+    + '  font-size: 11px;\n'
+    + '  color: ' + fg + ';\n'
+    + '  background: ' + bg + ';\n'
+    + '}\n'
+    + '\n'
+    + '.terminal-cursor {\n'
+    + '  color: ' + bg + ';\n'
+    + '  background: ' + fg + ';\n'
+    + '}\n';
+
+  // var out = '';
+  // each(Terminal.colors, function(color, i) {
+  //   if (i === 256) {
+  //     out += '\n.term-bg-color-default { background-color: ' + color + '; }';
+  //   }
+  //   if (i === 257) {
+  //     out += '\n.term-fg-color-default { color: ' + color + '; }';
+  //   }
+  //   out += '\n.term-bg-color-' + i + ' { background-color: ' + color + '; }';
+  //   out += '\n.term-fg-color-' + i + ' { color: ' + color + '; }';
+  // });
+  // style.innerHTML += out + '\n';
+
+  head.insertBefore(style, head.firstChild);
+};
+
+/**
+ * Open Terminal
+ */
+
+Terminal.prototype.open = function(parent) {
+  var self = this
+    , i = 0
+    , div;
+
+  this.parent = parent || this.parent;
+
+  if (!this.parent) {
+    throw new Error('Terminal requires a parent element.');
+  }
+
+  // Grab global elements.
+  this.context = this.parent.ownerDocument.defaultView;
+  this.document = this.parent.ownerDocument;
+  this.body = this.document.getElementsByTagName('body')[0];
+
+  // Parse user-agent strings.
+  if (this.context.navigator && this.context.navigator.userAgent) {
+    this.isMac = !!~this.context.navigator.userAgent.indexOf('Mac');
+    this.isIpad = !!~this.context.navigator.userAgent.indexOf('iPad');
+    this.isIphone = !!~this.context.navigator.userAgent.indexOf('iPhone');
+    this.isMSIE = !!~this.context.navigator.userAgent.indexOf('MSIE');
+  }
+
+  // Create our main terminal element.
+  this.element = this.document.createElement('div');
+  this.element.className = 'terminal';
+  this.element.style.outline = 'none';
+  this.element.setAttribute('tabindex', 0);
+  this.element.style.backgroundColor = this.colors[256];
+  this.element.style.color = this.colors[257];
+
+  // Create the lines for our terminal.
+  this.children = [];
+  for (; i < this.rows; i++) {
+    div = this.document.createElement('div');
+    this.element.appendChild(div);
+    this.children.push(div);
+  }
+  this.parent.appendChild(this.element);
+
+  // Draw the screen.
+  this.refresh(0, this.rows - 1);
+
+  // Initialize global actions that
+  // need to be taken on the document.
+  this.initGlobal();
+
+  // Ensure there is a Terminal.focus.
+  this.focus();
+
+  // Start blinking the cursor.
+  this.startBlink();
+
+  // Bind to DOM events related
+  // to focus and paste behavior.
+  on(this.element, 'focus', function() {
+    self.focus();
+    if (self.isIpad || self.isIphone) {
+      Terminal._textarea.focus();
+    }
+  });
+
+  // This causes slightly funky behavior.
+  // on(this.element, 'blur', function() {
+  //   self.blur();
+  // });
+
+  on(this.element, 'mousedown', function() {
+    self.focus();
+  });
+
+  // Clickable paste workaround, using contentEditable.
+  // This probably shouldn't work,
+  // ... but it does. Firefox's paste
+  // event seems to only work for textareas?
+  on(this.element, 'mousedown', function(ev) {
+    var button = ev.button != null
+      ? +ev.button
+      : ev.which != null
+        ? ev.which - 1
+        : null;
+
+    // Does IE9 do this?
+    if (self.isMSIE) {
+      button = button === 1 ? 0 : button === 4 ? 1 : button;
+    }
+
+    if (button !== 2) return;
+
+    self.element.contentEditable = 'true';
+    setTimeout(function() {
+      self.element.contentEditable = 'inherit'; // 'false';
+    }, 1);
+  }, true);
+
+  // Listen for mouse events and translate
+  // them into terminal mouse protocols.
+  this.bindMouse();
+
+  // Figure out whether boldness affects
+  // the character width of monospace fonts.
+  if (Terminal.brokenBold == null) {
+    Terminal.brokenBold = isBoldBroken(this.document);
+  }
+
+  // this.emit('open');
+
+  // This can be useful for pasting,
+  // as well as the iPad fix.
+  setTimeout(function() {
+    self.element.focus();
+  }, 100);
+};
+
+// XTerm mouse events
+// http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking
+// To better understand these
+// the xterm code is very helpful:
+// Relevant files:
+//   button.c, charproc.c, misc.c
+// Relevant functions in xterm/button.c:
+//   BtnCode, EmitButtonCode, EditorButton, SendMousePosition
+Terminal.prototype.bindMouse = function() {
+  var el = this.element
+    , self = this
+    , pressed = 32;
+
+  var wheelEvent = 'onmousewheel' in this.context
+    ? 'mousewheel'
+    : 'DOMMouseScroll';
+
+  // mouseup, mousedown, mousewheel
+  // left click: ^[[M 3<^[[M#3<
+  // mousewheel up: ^[[M`3>
+  function sendButton(ev) {
+    var button
+      , pos;
+
+    // get the xterm-style button
+    button = getButton(ev);
+
+    // get mouse coordinates
+    pos = getCoords(ev);
+    if (!pos) return;
+
+    sendEvent(button, pos);
+
+    switch (ev.type) {
+      case 'mousedown':
+        pressed = button;
+        break;
+      case 'mouseup':
+        // keep it at the left
+        // button, just in case.
+        pressed = 32;
+        break;
+      case wheelEvent:
+        // nothing. don't
+        // interfere with
+        // `pressed`.
+        break;
+    }
+  }
+
+  // motion example of a left click:
+  // ^[[M 3<^[[M@4<^[[M@5<^[[M@6<^[[M@7<^[[M#7<
+  function sendMove(ev) {
+    var button = pressed
+      , pos;
+
+    pos = getCoords(ev);
+    if (!pos) return;
+
+    // buttons marked as motions
+    // are incremented by 32
+    button += 32;
+
+    sendEvent(button, pos);
+  }
+
+  // encode button and
+  // position to characters
+  function encode(data, ch) {
+    if (!self.utfMouse) {
+      if (ch === 255) return data.push(0);
+      if (ch > 127) ch = 127;
+      data.push(ch);
+    } else {
+      if (ch === 2047) return data.push(0);
+      if (ch < 127) {
+        data.push(ch);
+      } else {
+        if (ch > 2047) ch = 2047;
+        data.push(0xC0 | (ch >> 6));
+        data.push(0x80 | (ch & 0x3F));
+      }
+    }
+  }
+
+  // send a mouse event:
+  // regular/utf8: ^[[M Cb Cx Cy
+  // urxvt: ^[[ Cb ; Cx ; Cy M
+  // sgr: ^[[ Cb ; Cx ; Cy M/m
+  // vt300: ^[[ 24(1/3/5)~ [ Cx , Cy ] \r
+  // locator: CSI P e ; P b ; P r ; P c ; P p & w
+  function sendEvent(button, pos) {
+    // self.emit('mouse', {
+    //   x: pos.x - 32,
+    //   y: pos.x - 32,
+    //   button: button
+    // });
+
+    if (self.vt300Mouse) {
+      // NOTE: Unstable.
+      // http://www.vt100.net/docs/vt3xx-gp/chapter15.html
+      button &= 3;
+      pos.x -= 32;
+      pos.y -= 32;
+      var data = '\x1b[24';
+      if (button === 0) data += '1';
+      else if (button === 1) data += '3';
+      else if (button === 2) data += '5';
+      else if (button === 3) return;
+      else data += '0';
+      data += '~[' + pos.x + ',' + pos.y + ']\r';
+      self.send(data);
+      return;
+    }
+
+    if (self.decLocator) {
+      // NOTE: Unstable.
+      button &= 3;
+      pos.x -= 32;
+      pos.y -= 32;
+      if (button === 0) button = 2;
+      else if (button === 1) button = 4;
+      else if (button === 2) button = 6;
+      else if (button === 3) button = 3;
+      self.send('\x1b['
+        + button
+        + ';'
+        + (button === 3 ? 4 : 0)
+        + ';'
+        + pos.y
+        + ';'
+        + pos.x
+        + ';'
+        + (pos.page || 0)
+        + '&w');
+      return;
+    }
+
+    if (self.urxvtMouse) {
+      pos.x -= 32;
+      pos.y -= 32;
+      pos.x++;
+      pos.y++;
+      self.send('\x1b[' + button + ';' + pos.x + ';' + pos.y + 'M');
+      return;
+    }
+
+    if (self.sgrMouse) {
+      pos.x -= 32;
+      pos.y -= 32;
+      self.send('\x1b[<'
+        + ((button & 3) === 3 ? button & ~3 : button)
+        + ';'
+        + pos.x
+        + ';'
+        + pos.y
+        + ((button & 3) === 3 ? 'm' : 'M'));
+      return;
+    }
+
+    var data = [];
+
+    encode(data, button);
+    encode(data, pos.x);
+    encode(data, pos.y);
+
+    self.send('\x1b[M' + String.fromCharCode.apply(String, data));
+  }
+
+  function getButton(ev) {
+    var button
+      , shift
+      , meta
+      , ctrl
+      , mod;
+
+    // two low bits:
+    // 0 = left
+    // 1 = middle
+    // 2 = right
+    // 3 = release
+    // wheel up/down:
+    // 1, and 2 - with 64 added
+    switch (ev.type) {
+      case 'mousedown':
+        button = ev.button != null
+          ? +ev.button
+          : ev.which != null
+            ? ev.which - 1
+            : null;
+
+        if (self.isMSIE) {
+          button = button === 1 ? 0 : button === 4 ? 1 : button;
+        }
+        break;
+      case 'mouseup':
+        button = 3;
+        break;
+      case 'DOMMouseScroll':
+        button = ev.detail < 0
+          ? 64
+          : 65;
+        break;
+      case 'mousewheel':
+        button = ev.wheelDeltaY > 0
+          ? 64
+          : 65;
+        break;
+    }
+
+    // next three bits are the modifiers:
+    // 4 = shift, 8 = meta, 16 = control
+    shift = ev.shiftKey ? 4 : 0;
+    meta = ev.metaKey ? 8 : 0;
+    ctrl = ev.ctrlKey ? 16 : 0;
+    mod = shift | meta | ctrl;
+
+    // no mods
+    if (self.vt200Mouse) {
+      // ctrl only
+      mod &= ctrl;
+    } else if (!self.normalMouse) {
+      mod = 0;
+    }
+
+    // increment to SP
+    button = (32 + (mod << 2)) + button;
+
+    return button;
+  }
+
+  // mouse coordinates measured in cols/rows
+  function getCoords(ev) {
+    var x, y, w, h, el;
+
+    // ignore browsers without pageX for now
+    if (ev.pageX == null) return;
+
+    x = ev.pageX;
+    y = ev.pageY;
+    el = self.element;
+
+    // should probably check offsetParent
+    // but this is more portable
+    while (el && el !== self.document.documentElement) {
+      x -= el.offsetLeft;
+      y -= el.offsetTop;
+      el = 'offsetParent' in el
+        ? el.offsetParent
+        : el.parentNode;
+    }
+
+    // convert to cols/rows
+    w = self.element.clientWidth;
+    h = self.element.clientHeight;
+    x = Math.round((x / w) * self.cols);
+    y = Math.round((y / h) * self.rows);
+
+    // be sure to avoid sending
+    // bad positions to the program
+    if (x < 0) x = 0;
+    if (x > self.cols) x = self.cols;
+    if (y < 0) y = 0;
+    if (y > self.rows) y = self.rows;
+
+    // xterm sends raw bytes and
+    // starts at 32 (SP) for each.
+    x += 32;
+    y += 32;
+
+    return {
+      x: x,
+      y: y,
+      type: ev.type === wheelEvent
+        ? 'mousewheel'
+        : ev.type
+    };
+  }
+
+  on(el, 'mousedown', function(ev) {
+    if (!self.mouseEvents) return;
+
+    // send the button
+    sendButton(ev);
+
+    // ensure focus
+    self.focus();
+
+    // fix for odd bug
+    //if (self.vt200Mouse && !self.normalMouse) {
+    if (self.vt200Mouse) {
+      sendButton({ __proto__: ev, type: 'mouseup' });
+      return cancel(ev);
+    }
+
+    // bind events
+    if (self.normalMouse) on(self.document, 'mousemove', sendMove);
+
+    // x10 compatibility mode can't send button releases
+    if (!self.x10Mouse) {
+      on(self.document, 'mouseup', function up(ev) {
+        sendButton(ev);
+        if (self.normalMouse) off(self.document, 'mousemove', sendMove);
+        off(self.document, 'mouseup', up);
+        return cancel(ev);
+      });
+    }
+
+    return cancel(ev);
+  });
+
+  //if (self.normalMouse) {
+  //  on(self.document, 'mousemove', sendMove);
+  //}
+
+  on(el, wheelEvent, function(ev) {
+    if (!self.mouseEvents) return;
+    if (self.x10Mouse
+        || self.vt300Mouse
+        || self.decLocator) return;
+    sendButton(ev);
+    return cancel(ev);
+  });
+
+  // allow mousewheel scrolling in
+  // the shell for example
+  on(el, wheelEvent, function(ev) {
+    if (self.mouseEvents) return;
+    if (self.applicationKeypad) return;
+    if (ev.type === 'DOMMouseScroll') {
+      self.scrollDisp(ev.detail < 0 ? -5 : 5);
+    } else {
+      self.scrollDisp(ev.wheelDeltaY > 0 ? -5 : 5);
+    }
+    return cancel(ev);
+  });
+};
+
+/**
+ * Destroy Terminal
+ */
+
+Terminal.prototype.destroy = function() {
+  this.readable = false;
+  this.writable = false;
+  this._events = {};
+  this.handler = function() {};
+  this.write = function() {};
+  if (this.element.parentNode) {
+    this.element.parentNode.removeChild(this.element);
+  }
+  //this.emit('close');
+};
+
+/**
+ * Rendering Engine
+ */
+
+// In the screen buffer, each character
+// is stored as a an array with a character
+// and a 32-bit integer.
+// First value: a utf-16 character.
+// Second value:
+// Next 9 bits: background color (0-511).
+// Next 9 bits: foreground color (0-511).
+// Next 14 bits: a mask for misc. flags:
+//   1=bold, 2=underline, 4=blink, 8=inverse, 16=invisible
+
+Terminal.prototype.refresh = function(start, end) {
+  var x
+    , y
+    , i
+    , line
+    , out
+    , ch
+    , width
+    , data
+    , attr
+    , bg
+    , fg
+    , flags
+    , row
+    , parent;
+
+  if (end - start >= this.rows / 2) {
+    parent = this.element.parentNode;
+    if (parent) parent.removeChild(this.element);
+  }
+
+  width = this.cols;
+  y = start;
+
+  if (end >= this.lines.length) {
+    this.log('`end` is too large. Most likely a bad CSR.');
+    end = this.lines.length - 1;
+  }
+
+  for (; y <= end; y++) {
+    row = y + this.ydisp;
+
+    line = this.lines[row];
+    out = '';
+
+    if (y === this.y
+        && this.cursorState
+        && (this.ydisp === this.ybase || this.selectMode)
+        && !this.cursorHidden) {
+      x = this.x;
+    } else {
+      x = -1;
+    }
+
+    attr = this.defAttr;
+    i = 0;
+
+    for (; i < width; i++) {
+      data = line[i][0];
+      ch = line[i][1];
+
+      if (i === x) data = -1;
+
+      if (data !== attr) {
+        if (attr !== this.defAttr) {
+          out += '</span>';
+        }
+        if (data !== this.defAttr) {
+          if (data === -1) {
+            out += '<span class="reverse-video terminal-cursor">';
+          } else {
+            out += '<span style="';
+
+            bg = data & 0x1ff;
+            fg = (data >> 9) & 0x1ff;
+            flags = data >> 18;
+
+            // bold
+            if (flags & 1) {
+              if (!Terminal.brokenBold) {
+                out += 'font-weight:bold;';
+              }
+              // See: XTerm*boldColors
+              if (fg < 8) fg += 8;
+            }
+
+            // underline
+            if (flags & 2) {
+              out += 'text-decoration:underline;';
+            }
+
+            // blink
+            if (flags & 4) {
+              if (flags & 2) {
+                out = out.slice(0, -1);
+                out += ' blink;';
+              } else {
+                out += 'text-decoration:blink;';
+              }
+            }
+
+            // inverse
+            if (flags & 8) {
+              bg = (data >> 9) & 0x1ff;
+              fg = data & 0x1ff;
+              // Should inverse just be before the
+              // above boldColors effect instead?
+              if ((flags & 1) && fg < 8) fg += 8;
+            }
+
+            // invisible
+            if (flags & 16) {
+              out += 'visibility:hidden;';
+            }
+
+            // out += '" class="'
+            //   + 'term-bg-color-' + bg
+            //   + ' '
+            //   + 'term-fg-color-' + fg
+            //   + '">';
+
+            if (bg !== 256) {
+              out += 'background-color:'
+                + this.colors[bg]
+                + ';';
+            }
+
+            if (fg !== 257) {
+              out += 'color:'
+                + this.colors[fg]
+                + ';';
+            }
+
+            out += '">';
+          }
+        }
+      }
+
+      switch (ch) {
+        case '&':
+          out += '&amp;';
+          break;
+        case '<':
+          out += '&lt;';
+          break;
+        case '>':
+          out += '&gt;';
+          break;
+        default:
+          if (ch <= ' ') {
+            out += '&nbsp;';
+          } else {
+            if (isWide(ch)) i++;
+            out += ch;
+          }
+          break;
+      }
+
+      attr = data;
+    }
+
+    if (attr !== this.defAttr) {
+      out += '</span>';
+    }
+
+    this.children[y].innerHTML = out;
+  }
+
+  if (parent) parent.appendChild(this.element);
+};
+
+Terminal.prototype._cursorBlink = function() {
+  if (Terminal.focus !== this) return;
+  this.cursorState ^= 1;
+  this.refresh(this.y, this.y);
+};
+
+Terminal.prototype.showCursor = function() {
+  if (!this.cursorState) {
+    this.cursorState = 1;
+    this.refresh(this.y, this.y);
+  } else {
+    // Temporarily disabled:
+    // this.refreshBlink();
+  }
+};
+
+Terminal.prototype.startBlink = function() {
+  if (!this.cursorBlink) return;
+  var self = this;
+  this._blinker = function() {
+    self._cursorBlink();
+  };
+  this._blink = setInterval(this._blinker, 500);
+};
+
+Terminal.prototype.refreshBlink = function() {
+  if (!this.cursorBlink) return;
+  clearInterval(this._blink);
+  this._blink = setInterval(this._blinker, 500);
+};
+
+Terminal.prototype.scroll = function() {
+  var row;
+
+  if (++this.ybase === this.scrollback) {
+    this.ybase = this.ybase / 2 | 0;
+    this.lines = this.lines.slice(-(this.ybase + this.rows) + 1);
+  }
+
+  this.ydisp = this.ybase;
+
+  // last line
+  row = this.ybase + this.rows - 1;
+
+  // subtract the bottom scroll region
+  row -= this.rows - 1 - this.scrollBottom;
+
+  if (row === this.lines.length) {
+    // potential optimization:
+    // pushing is faster than splicing
+    // when they amount to the same
+    // behavior.
+    this.lines.push(this.blankLine());
+  } else {
+    // add our new line
+    this.lines.splice(row, 0, this.blankLine());
+  }
+
+  if (this.scrollTop !== 0) {
+    if (this.ybase !== 0) {
+      this.ybase--;
+      this.ydisp = this.ybase;
+    }
+    this.lines.splice(this.ybase + this.scrollTop, 1);
+  }
+
+  // this.maxRange();
+  this.updateRange(this.scrollTop);
+  this.updateRange(this.scrollBottom);
+};
+
+Terminal.prototype.scrollDisp = function(disp) {
+  this.ydisp += disp;
+
+  if (this.ydisp > this.ybase) {
+    this.ydisp = this.ybase;
+  } else if (this.ydisp < 0) {
+    this.ydisp = 0;
+  }
+
+  this.refresh(0, this.rows - 1);
+};
+
+Terminal.prototype.write = function(data) {
+  var l = data.length
+    , i = 0
+    , j
+    , cs
+    , ch;
+
+  this.refreshStart = this.y;
+  this.refreshEnd = this.y;
+
+  if (this.ybase !== this.ydisp) {
+    this.ydisp = this.ybase;
+    this.maxRange();
+  }
+
+  // this.log(JSON.stringify(data.replace(/\x1b/g, '^[')));
+
+  for (; i < l; i++) {
+    ch = data[i];
+    switch (this.state) {
+      case normal:
+        switch (ch) {
+          // '\0'
+          // case '\0':
+          // case '\200':
+          //   break;
+
+          // '\a'
+          case '\x07':
+            this.bell();
+            break;
+
+          // '\n', '\v', '\f'
+          case '\n':
+          case '\x0b':
+          case '\x0c':
+            if (this.convertEol) {
+              this.x = 0;
+            }
+            // TODO: Implement eat_newline_glitch.
+            // if (this.realX >= this.cols) break;
+            // this.realX = 0;
+            this.y++;
+            if (this.y > this.scrollBottom) {
+              this.y--;
+              this.scroll();
+            }
+            break;
+
+          // '\r'
+          case '\r':
+            this.x = 0;
+            break;
+
+          // '\b'
+          case '\x08':
+            if (this.x > 0) {
+              this.x--;
+            }
+            break;
+
+          // '\t'
+          case '\t':
+            this.x = this.nextStop();
+            break;
+
+          // shift out
+          case '\x0e':
+            this.setgLevel(1);
+            break;
+
+          // shift in
+          case '\x0f':
+            this.setgLevel(0);
+            break;
+
+          // '\e'
+          case '\x1b':
+            this.state = escaped;
+            break;
+
+          default:
+            // ' '
+            if (ch >= ' ') {
+              if (this.charset && this.charset[ch]) {
+                ch = this.charset[ch];
+              }
+
+              if (this.x >= this.cols) {
+                this.x = 0;
+                this.y++;
+                if (this.y > this.scrollBottom) {
+                  this.y--;
+                  this.scroll();
+                }
+              }
+
+              this.lines[this.y + this.ybase][this.x] = [this.curAttr, ch];
+              this.x++;
+              this.updateRange(this.y);
+
+              if (isWide(ch)) {
+                j = this.y + this.ybase;
+                if (this.cols < 2 || this.x >= this.cols) {
+                  this.lines[j][this.x - 1] = [this.curAttr, ' '];
+                  break;
+                }
+                this.lines[j][this.x] = [this.curAttr, ' '];
+                this.x++;
+              }
+            }
+            break;
+        }
+        break;
+      case escaped:
+        switch (ch) {
+          // ESC [ Control Sequence Introducer ( CSI is 0x9b).
+          case '[':
+            this.params = [];
+            this.currentParam = 0;
+            this.state = csi;
+            break;
+
+          // ESC ] Operating System Command ( OSC is 0x9d).
+          case ']':
+            this.params = [];
+            this.currentParam = 0;
+            this.state = osc;
+            break;
+
+          // ESC P Device Control String ( DCS is 0x90).
+          case 'P':
+            this.params = [];
+            this.currentParam = 0;
+            this.state = dcs;
+            break;
+
+          // ESC _ Application Program Command ( APC is 0x9f).
+          case '_':
+            this.state = ignore;
+            break;
+
+          // ESC ^ Privacy Message ( PM is 0x9e).
+          case '^':
+            this.state = ignore;
+            break;
+
+          // ESC c Full Reset (RIS).
+          case 'c':
+            this.reset();
+            break;
+
+          // ESC E Next Line ( NEL is 0x85).
+          // ESC D Index ( IND is 0x84).
+          case 'E':
+            this.x = 0;
+            ;
+          case 'D':
+            this.index();
+            break;
+
+          // ESC M Reverse Index ( RI is 0x8d).
+          case 'M':
+            this.reverseIndex();
+            break;
+
+          // ESC % Select default/utf-8 character set.
+          // @ = default, G = utf-8
+          case '%':
+            //this.charset = null;
+            this.setgLevel(0);
+            this.setgCharset(0, Terminal.charsets.US);
+            this.state = normal;
+            i++;
+            break;
+
+          // ESC (,),*,+,-,. Designate G0-G2 Character Set.
+          case '(': // <-- this seems to get all the attention
+          case ')':
+          case '*':
+          case '+':
+          case '-':
+          case '.':
+            switch (ch) {
+              case '(':
+                this.gcharset = 0;
+                break;
+              case ')':
+                this.gcharset = 1;
+                break;
+              case '*':
+                this.gcharset = 2;
+                break;
+              case '+':
+                this.gcharset = 3;
+                break;
+              case '-':
+                this.gcharset = 1;
+                break;
+              case '.':
+                this.gcharset = 2;
+                break;
+            }
+            this.state = charset;
+            break;
+
+          // Designate G3 Character Set (VT300).
+          // A = ISO Latin-1 Supplemental.
+          // Not implemented.
+          case '/':
+            this.gcharset = 3;
+            this.state = charset;
+            i--;
+            break;
+
+          // ESC N
+          // Single Shift Select of G2 Character Set
+          // ( SS2 is 0x8e). This affects next character only.
+          case 'N':
+            break;
+          // ESC O
+          // Single Shift Select of G3 Character Set
+          // ( SS3 is 0x8f). This affects next character only.
+          case 'O':
+            break;
+          // ESC n
+          // Invoke the G2 Character Set as GL (LS2).
+          case 'n':
+            this.setgLevel(2);
+            break;
+          // ESC o
+          // Invoke the G3 Character Set as GL (LS3).
+          case 'o':
+            this.setgLevel(3);
+            break;
+          // ESC |
+          // Invoke the G3 Character Set as GR (LS3R).
+          case '|':
+            this.setgLevel(3);
+            break;
+          // ESC }
+          // Invoke the G2 Character Set as GR (LS2R).
+          case '}':
+            this.setgLevel(2);
+            break;
+          // ESC ~
+          // Invoke the G1 Character Set as GR (LS1R).
+          case '~':
+            this.setgLevel(1);
+            break;
+
+          // ESC 7 Save Cursor (DECSC).
+          case '7':
+            this.saveCursor();
+            this.state = normal;
+            break;
+
+          // ESC 8 Restore Cursor (DECRC).
+          case '8':
+            this.restoreCursor();
+            this.state = normal;
+            break;
+
+          // ESC # 3 DEC line height/width
+          case '#':
+            this.state = normal;
+            i++;
+            break;
+
+          // ESC H Tab Set (HTS is 0x88).
+          case 'H':
+            this.tabSet();
+            break;
+
+          // ESC = Application Keypad (DECPAM).
+          case '=':
+            this.log('Serial port requested application keypad.');
+            this.applicationKeypad = true;
+            this.state = normal;
+            break;
+
+          // ESC > Normal Keypad (DECPNM).
+          case '>':
+            this.log('Switching back to normal keypad.');
+            this.applicationKeypad = false;
+            this.state = normal;
+            break;
+
+          default:
+            this.state = normal;
+            this.error('Unknown ESC control: %s.', ch);
+            break;
+        }
+        break;
+
+      case charset:
+        switch (ch) {
+          case '0': // DEC Special Character and Line Drawing Set.
+            cs = Terminal.charsets.SCLD;
+            break;
+          case 'A': // UK
+            cs = Terminal.charsets.UK;
+            break;
+          case 'B': // United States (USASCII).
+            cs = Terminal.charsets.US;
+            break;
+          case '4': // Dutch
+            cs = Terminal.charsets.Dutch;
+            break;
+          case 'C': // Finnish
+          case '5':
+            cs = Terminal.charsets.Finnish;
+            break;
+          case 'R': // French
+            cs = Terminal.charsets.French;
+            break;
+          case 'Q': // FrenchCanadian
+            cs = Terminal.charsets.FrenchCanadian;
+            break;
+          case 'K': // German
+            cs = Terminal.charsets.German;
+            break;
+          case 'Y': // Italian
+            cs = Terminal.charsets.Italian;
+            break;
+          case 'E': // NorwegianDanish
+          case '6':
+            cs = Terminal.charsets.NorwegianDanish;
+            break;
+          case 'Z': // Spanish
+            cs = Terminal.charsets.Spanish;
+            break;
+          case 'H': // Swedish
+          case '7':
+            cs = Terminal.charsets.Swedish;
+            break;
+          case '=': // Swiss
+            cs = Terminal.charsets.Swiss;
+            break;
+          case '/': // ISOLatin (actually /A)
+            cs = Terminal.charsets.ISOLatin;
+            i++;
+            break;
+          default: // Default
+            cs = Terminal.charsets.US;
+            break;
+        }
+        this.setgCharset(this.gcharset, cs);
+        this.gcharset = null;
+        this.state = normal;
+        break;
+
+      case osc:
+        // OSC Ps ; Pt ST
+        // OSC Ps ; Pt BEL
+        //   Set Text Parameters.
+        if (ch === '\x1b' || ch === '\x07') {
+          if (ch === '\x1b') i++;
+
+          this.params.push(this.currentParam);
+
+          switch (this.params[0]) {
+            case 0:
+            case 1:
+            case 2:
+              if (this.params[1]) {
+                this.title = this.params[1];
+                this.handleTitle(this.title);
+              }
+              break;
+            case 3:
+              // set X property
+              break;
+            case 4:
+            case 5:
+              // change dynamic colors
+              break;
+            case 10:
+            case 11:
+            case 12:
+            case 13:
+            case 14:
+            case 15:
+            case 16:
+            case 17:
+            case 18:
+            case 19:
+              // change dynamic ui colors
+              break;
+            case 46:
+              // change log file
+              break;
+            case 50:
+              // dynamic font
+              break;
+            case 51:
+              // emacs shell
+              break;
+            case 52:
+              // manipulate selection data
+              break;
+            case 104:
+            case 105:
+            case 110:
+            case 111:
+            case 112:
+            case 113:
+            case 114:
+            case 115:
+            case 116:
+            case 117:
+            case 118:
+              // reset colors
+              break;
+          }
+
+          this.params = [];
+          this.currentParam = 0;
+          this.state = normal;
+        } else {
+          if (!this.params.length) {
+            if (ch >= '0' && ch <= '9') {
+              this.currentParam =
+                this.currentParam * 10 + ch.charCodeAt(0) - 48;
+            } else if (ch === ';') {
+              this.params.push(this.currentParam);
+              this.currentParam = '';
+            }
+          } else {
+            this.currentParam += ch;
+          }
+        }
+        break;
+
+      case csi:
+        // '?', '>', '!'
+        if (ch === '?' || ch === '>' || ch === '!') {
+          this.prefix = ch;
+          break;
+        }
+
+        // 0 - 9
+        if (ch >= '0' && ch <= '9') {
+          this.currentParam = this.currentParam * 10 + ch.charCodeAt(0) - 48;
+          break;
+        }
+
+        // '$', '"', ' ', '\''
+        if (ch === '$' || ch === '"' || ch === ' ' || ch === '\'') {
+          this.postfix = ch;
+          break;
+        }
+
+        this.params.push(this.currentParam);
+        this.currentParam = 0;
+
+        // ';'
+        if (ch === ';') break;
+
+        this.state = normal;
+
+        switch (ch) {
+          // CSI Ps A
+          // Cursor Up Ps Times (default = 1) (CUU).
+          case 'A':
+            this.cursorUp(this.params);
+            break;
+
+          // CSI Ps B
+          // Cursor Down Ps Times (default = 1) (CUD).
+          case 'B':
+            this.cursorDown(this.params);
+            break;
+
+          // CSI Ps C
+          // Cursor Forward Ps Times (default = 1) (CUF).
+          case 'C':
+            this.cursorForward(this.params);
+            break;
+
+          // CSI Ps D
+          // Cursor Backward Ps Times (default = 1) (CUB).
+          case 'D':
+            this.cursorBackward(this.params);
+            break;
+
+          // CSI Ps ; Ps H
+          // Cursor Position [row;column] (default = [1,1]) (CUP).
+          case 'H':
+            this.cursorPos(this.params);
+            break;
+
+          // CSI Ps J  Erase in Display (ED).
+          case 'J':
+            this.eraseInDisplay(this.params);
+            break;
+
+          // CSI Ps K  Erase in Line (EL).
+          case 'K':
+            this.eraseInLine(this.params);
+            break;
+
+          // CSI Pm m  Character Attributes (SGR).
+          case 'm':
+            if (!this.prefix) {
+              this.charAttributes(this.params);
+            }
+            break;
+
+          // CSI Ps n  Device Status Report (DSR).
+          case 'n':
+            if (!this.prefix) {
+              this.deviceStatus(this.params);
+            }
+            break;
+
+          /**
+           * Additions
+           */
+
+          // CSI Ps @
+          // Insert Ps (Blank) Character(s) (default = 1) (ICH).
+          case '@':
+            this.insertChars(this.params);
+            break;
+
+          // CSI Ps E
+          // Cursor Next Line Ps Times (default = 1) (CNL).
+          case 'E':
+            this.cursorNextLine(this.params);
+            break;
+
+          // CSI Ps F
+          // Cursor Preceding Line Ps Times (default = 1) (CNL).
+          case 'F':
+            this.cursorPrecedingLine(this.params);
+            break;
+
+          // CSI Ps G
+          // Cursor Character Absolute  [column] (default = [row,1]) (CHA).
+          case 'G':
+            this.cursorCharAbsolute(this.params);
+            break;
+
+          // CSI Ps L
+          // Insert Ps Line(s) (default = 1) (IL).
+          case 'L':
+            this.insertLines(this.params);
+            break;
+
+          // CSI Ps M
+          // Delete Ps Line(s) (default = 1) (DL).
+          case 'M':
+            this.deleteLines(this.params);
+            break;
+
+          // CSI Ps P
+          // Delete Ps Character(s) (default = 1) (DCH).
+          case 'P':
+            this.deleteChars(this.params);
+            break;
+
+          // CSI Ps X
+          // Erase Ps Character(s) (default = 1) (ECH).
+          case 'X':
+            this.eraseChars(this.params);
+            break;
+
+          // CSI Pm `  Character Position Absolute
+          //   [column] (default = [row,1]) (HPA).
+          case '`':
+            this.charPosAbsolute(this.params);
+            break;
+
+          // 141 61 a * HPR -
+          // Horizontal Position Relative
+          case 'a':
+            this.HPositionRelative(this.params);
+            break;
+
+          // CSI P s c
+          // Send Device Attributes (Primary DA).
+          // CSI > P s c
+          // Send Device Attributes (Secondary DA)
+          case 'c':
+            this.sendDeviceAttributes(this.params);
+            break;
+
+          // CSI Pm d
+          // Line Position Absolute  [row] (default = [1,column]) (VPA).
+          case 'd':
+            this.linePosAbsolute(this.params);
+            break;
+
+          // 145 65 e * VPR - Vertical Position Relative
+          case 'e':
+            this.VPositionRelative(this.params);
+            break;
+
+          // CSI Ps ; Ps f
+          //   Horizontal and Vertical Position [row;column] (default =
+          //   [1,1]) (HVP).
+          case 'f':
+            this.HVPosition(this.params);
+            break;
+
+          // CSI Pm h  Set Mode (SM).
+          // CSI ? Pm h - mouse escape codes, cursor escape codes
+          case 'h':
+            this.setMode(this.params);
+            break;
+
+          // CSI Pm l  Reset Mode (RM).
+          // CSI ? Pm l
+          case 'l':
+            this.resetMode(this.params);
+            break;
+
+          // CSI Ps ; Ps r
+          //   Set Scrolling Region [top;bottom] (default = full size of win-
+          //   dow) (DECSTBM).
+          // CSI ? Pm r
+          case 'r':
+            this.setScrollRegion(this.params);
+            break;
+
+          // CSI s
+          //   Save cursor (ANSI.SYS).
+          case 's':
+            this.saveCursor(this.params);
+            break;
+
+          // CSI u
+          //   Restore cursor (ANSI.SYS).
+          case 'u':
+            this.restoreCursor(this.params);
+            break;
+
+          /**
+           * Lesser Used
+           */
+
+          // CSI Ps I
+          // Cursor Forward Tabulation Ps tab stops (default = 1) (CHT).
+          case 'I':
+            this.cursorForwardTab(this.params);
+            break;
+
+          // CSI Ps S  Scroll up Ps lines (default = 1) (SU).
+          case 'S':
+            this.scrollUp(this.params);
+            break;
+
+          // CSI Ps T  Scroll down Ps lines (default = 1) (SD).
+          // CSI Ps ; Ps ; Ps ; Ps ; Ps T
+          // CSI > Ps; Ps T
+          case 'T':
+            // if (this.prefix === '>') {
+            //   this.resetTitleModes(this.params);
+            //   break;
+            // }
+            // if (this.params.length > 2) {
+            //   this.initMouseTracking(this.params);
+            //   break;
+            // }
+            if (this.params.length < 2 && !this.prefix) {
+              this.scrollDown(this.params);
+            }
+            break;
+
+          // CSI Ps Z
+          // Cursor Backward Tabulation Ps tab stops (default = 1) (CBT).
+          case 'Z':
+            this.cursorBackwardTab(this.params);
+            break;
+
+          // CSI Ps b  Repeat the preceding graphic character Ps times (REP).
+          case 'b':
+            this.repeatPrecedingCharacter(this.params);
+            break;
+
+          // CSI Ps g  Tab Clear (TBC).
+          case 'g':
+            this.tabClear(this.params);
+            break;
+
+          // CSI Pm i  Media Copy (MC).
+          // CSI ? Pm i
+          // case 'i':
+          //   this.mediaCopy(this.params);
+          //   break;
+
+          // CSI Pm m  Character Attributes (SGR).
+          // CSI > Ps; Ps m
+          // case 'm': // duplicate
+          //   if (this.prefix === '>') {
+          //     this.setResources(this.params);
+          //   } else {
+          //     this.charAttributes(this.params);
+          //   }
+          //   break;
+
+          // CSI Ps n  Device Status Report (DSR).
+          // CSI > Ps n
+          // case 'n': // duplicate
+          //   if (this.prefix === '>') {
+          //     this.disableModifiers(this.params);
+          //   } else {
+          //     this.deviceStatus(this.params);
+          //   }
+          //   break;
+
+          // CSI > Ps p  Set pointer mode.
+          // CSI ! p   Soft terminal reset (DECSTR).
+          // CSI Ps$ p
+          //   Request ANSI mode (DECRQM).
+          // CSI ? Ps$ p
+          //   Request DEC private mode (DECRQM).
+          // CSI Ps ; Ps " p
+          case 'p':
+            switch (this.prefix) {
+              // case '>':
+              //   this.setPointerMode(this.params);
+              //   break;
+              case '!':
+                this.softReset(this.params);
+                break;
+              // case '?':
+              //   if (this.postfix === '$') {
+              //     this.requestPrivateMode(this.params);
+              //   }
+              //   break;
+              // default:
+              //   if (this.postfix === '"') {
+              //     this.setConformanceLevel(this.params);
+              //   } else if (this.postfix === '$') {
+              //     this.requestAnsiMode(this.params);
+              //   }
+              //   break;
+            }
+            break;
+
+          // CSI Ps q  Load LEDs (DECLL).
+          // CSI Ps SP q
+          // CSI Ps " q
+          // case 'q':
+          //   if (this.postfix === ' ') {
+          //     this.setCursorStyle(this.params);
+          //     break;
+          //   }
+          //   if (this.postfix === '"') {
+          //     this.setCharProtectionAttr(this.params);
+          //     break;
+          //   }
+          //   this.loadLEDs(this.params);
+          //   break;
+
+          // CSI Ps ; Ps r
+          //   Set Scrolling Region [top;bottom] (default = full size of win-
+          //   dow) (DECSTBM).
+          // CSI ? Pm r
+          // CSI Pt; Pl; Pb; Pr; Ps$ r
+          // case 'r': // duplicate
+          //   if (this.prefix === '?') {
+          //     this.restorePrivateValues(this.params);
+          //   } else if (this.postfix === '$') {
+          //     this.setAttrInRectangle(this.params);
+          //   } else {
+          //     this.setScrollRegion(this.params);
+          //   }
+          //   break;
+
+          // CSI s     Save cursor (ANSI.SYS).
+          // CSI ? Pm s
+          // case 's': // duplicate
+          //   if (this.prefix === '?') {
+          //     this.savePrivateValues(this.params);
+          //   } else {
+          //     this.saveCursor(this.params);
+          //   }
+          //   break;
+
+          // CSI Ps ; Ps ; Ps t
+          // CSI Pt; Pl; Pb; Pr; Ps$ t
+          // CSI > Ps; Ps t
+          // CSI Ps SP t
+          // case 't':
+          //   if (this.postfix === '$') {
+          //     this.reverseAttrInRectangle(this.params);
+          //   } else if (this.postfix === ' ') {
+          //     this.setWarningBellVolume(this.params);
+          //   } else {
+          //     if (this.prefix === '>') {
+          //       this.setTitleModeFeature(this.params);
+          //     } else {
+          //       this.manipulateWindow(this.params);
+          //     }
+          //   }
+          //   break;
+
+          // CSI u     Restore cursor (ANSI.SYS).
+          // CSI Ps SP u
+          // case 'u': // duplicate
+          //   if (this.postfix === ' ') {
+          //     this.setMarginBellVolume(this.params);
+          //   } else {
+          //     this.restoreCursor(this.params);
+          //   }
+          //   break;
+
+          // CSI Pt; Pl; Pb; Pr; Pp; Pt; Pl; Pp$ v
+          // case 'v':
+          //   if (this.postfix === '$') {
+          //     this.copyRectagle(this.params);
+          //   }
+          //   break;
+
+          // CSI Pt ; Pl ; Pb ; Pr ' w
+          // case 'w':
+          //   if (this.postfix === '\'') {
+          //     this.enableFilterRectangle(this.params);
+          //   }
+          //   break;
+
+          // CSI Ps x  Request Terminal Parameters (DECREQTPARM).
+          // CSI Ps x  Select Attribute Change Extent (DECSACE).
+          // CSI Pc; Pt; Pl; Pb; Pr$ x
+          // case 'x':
+          //   if (this.postfix === '$') {
+          //     this.fillRectangle(this.params);
+          //   } else {
+          //     this.requestParameters(this.params);
+          //     //this.__(this.params);
+          //   }
+          //   break;
+
+          // CSI Ps ; Pu ' z
+          // CSI Pt; Pl; Pb; Pr$ z
+          // case 'z':
+          //   if (this.postfix === '\'') {
+          //     this.enableLocatorReporting(this.params);
+          //   } else if (this.postfix === '$') {
+          //     this.eraseRectangle(this.params);
+          //   }
+          //   break;
+
+          // CSI Pm ' {
+          // CSI Pt; Pl; Pb; Pr$ {
+          // case '{':
+          //   if (this.postfix === '\'') {
+          //     this.setLocatorEvents(this.params);
+          //   } else if (this.postfix === '$') {
+          //     this.selectiveEraseRectangle(this.params);
+          //   }
+          //   break;
+
+          // CSI Ps ' |
+          // case '|':
+          //   if (this.postfix === '\'') {
+          //     this.requestLocatorPosition(this.params);
+          //   }
+          //   break;
+
+          // CSI P m SP }
+          // Insert P s Column(s) (default = 1) (DECIC), VT420 and up.
+          // case '}':
+          //   if (this.postfix === ' ') {
+          //     this.insertColumns(this.params);
+          //   }
+          //   break;
+
+          // CSI P m SP ~
+          // Delete P s Column(s) (default = 1) (DECDC), VT420 and up
+          // case '~':
+          //   if (this.postfix === ' ') {
+          //     this.deleteColumns(this.params);
+          //   }
+          //   break;
+
+          default:
+            this.error('Unknown CSI code: %s.', ch);
+            break;
+        }
+
+        this.prefix = '';
+        this.postfix = '';
+        break;
+
+      case dcs:
+        if (ch === '\x1b' || ch === '\x07') {
+          if (ch === '\x1b') i++;
+
+          switch (this.prefix) {
+            // User-Defined Keys (DECUDK).
+            case '':
+              break;
+
+            // Request Status String (DECRQSS).
+            // test: echo -e '\eP$q"p\e\\'
+            case '$q':
+              var pt = this.currentParam
+                , valid = false;
+
+              switch (pt) {
+                // DECSCA
+                case '"q':
+                  pt = '0"q';
+                  break;
+
+                // DECSCL
+                case '"p':
+                  pt = '61"p';
+                  break;
+
+                // DECSTBM
+                case 'r':
+                  pt = ''
+                    + (this.scrollTop + 1)
+                    + ';'
+                    + (this.scrollBottom + 1)
+                    + 'r';
+                  break;
+
+                // SGR
+                case 'm':
+                  pt = '0m';
+                  break;
+
+                default:
+                  this.error('Unknown DCS Pt: %s.', pt);
+                  pt = '';
+                  break;
+              }
+
+              this.send('\x1bP' + +valid + '$r' + pt + '\x1b\\');
+              break;
+
+            // Set Termcap/Terminfo Data (xterm, experimental).
+            case '+p':
+              break;
+
+            // Request Termcap/Terminfo String (xterm, experimental)
+            // Regular xterm does not even respond to this sequence.
+            // This can cause a small glitch in vim.
+            // test: echo -ne '\eP+q6b64\e\\'
+            case '+q':
+              var pt = this.currentParam
+                , valid = false;
+
+              this.send('\x1bP' + +valid + '+r' + pt + '\x1b\\');
+              break;
+
+            default:
+              this.error('Unknown DCS prefix: %s.', this.prefix);
+              break;
+          }
+
+          this.currentParam = 0;
+          this.prefix = '';
+          this.state = normal;
+        } else if (!this.currentParam) {
+          if (!this.prefix && ch !== '$' && ch !== '+') {
+            this.currentParam = ch;
+          } else if (this.prefix.length === 2) {
+            this.currentParam = ch;
+          } else {
+            this.prefix += ch;
+          }
+        } else {
+          this.currentParam += ch;
+        }
+        break;
+
+      case ignore:
+        // For PM and APC.
+        if (ch === '\x1b' || ch === '\x07') {
+          if (ch === '\x1b') i++;
+          this.state = normal;
+        }
+        break;
+    }
+  }
+
+  this.updateRange(this.y);
+  this.refresh(this.refreshStart, this.refreshEnd);
+};
+
+Terminal.prototype.writeln = function(data) {
+  this.write(data + '\r\n');
+};
+
+// Key Resources:
+// https://developer.mozilla.org/en-US/docs/DOM/KeyboardEvent
+Terminal.prototype.keyDown = function(ev) {
+  var self = this
+    , key;
+
+  switch (ev.keyCode) {
+    // backspace
+    case 8:
+      if (ev.shiftKey) {
+        key = '\x08'; // ^H
+        break;
+      }
+      key = '\x7f'; // ^?
+      break;
+    // tab
+    case 9:
+      if (ev.shiftKey) {
+        key = '\x1b[Z';
+        break;
+      }
+      key = '\t';
+      break;
+    // return/enter
+    case 13:
+      key = '\r';
+      break;
+    // escape
+    case 27:
+      key = '\x1b';
+      break;
+    // left-arrow
+    case 37:
+      if (this.applicationCursor) {
+        key = '\x1bOD'; // SS3 as ^[O for 7-bit
+        //key = '\x8fD'; // SS3 as 0x8f for 8-bit
+        break;
+      }
+      key = '\x1b[D';
+      break;
+    // right-arrow
+    case 39:
+      if (this.applicationCursor) {
+        key = '\x1bOC';
+        break;
+      }
+      key = '\x1b[C';
+      break;
+    // up-arrow
+    case 38:
+      if (this.applicationCursor) {
+        key = '\x1bOA';
+        break;
+      }
+      if (ev.ctrlKey) {
+        this.scrollDisp(-1);
+        return cancel(ev);
+      } else {
+        key = '\x1b[A';
+      }
+      break;
+    // down-arrow
+    case 40:
+      if (this.applicationCursor) {
+        key = '\x1bOB';
+        break;
+      }
+      if (ev.ctrlKey) {
+        this.scrollDisp(1);
+        return cancel(ev);
+      } else {
+        key = '\x1b[B';
+      }
+      break;
+    // delete
+    case 46:
+      key = '\x1b[3~';
+      break;
+    // insert
+    case 45:
+      key = '\x1b[2~';
+      break;
+    // home
+    case 36:
+      if (this.applicationKeypad) {
+        key = '\x1bOH';
+        break;
+      }
+      key = '\x1bOH';
+      break;
+    // end
+    case 35:
+      if (this.applicationKeypad) {
+        key = '\x1bOF';
+        break;
+      }
+      key = '\x1bOF';
+      break;
+    // page up
+    case 33:
+      if (ev.shiftKey) {
+        this.scrollDisp(-(this.rows - 1));
+        return cancel(ev);
+      } else {
+        key = '\x1b[5~';
+      }
+      break;
+    // page down
+    case 34:
+      if (ev.shiftKey) {
+        this.scrollDisp(this.rows - 1);
+        return cancel(ev);
+      } else {
+        key = '\x1b[6~';
+      }
+      break;
+    // F1
+    case 112:
+      key = '\x1bOP';
+      break;
+    // F2
+    case 113:
+      key = '\x1bOQ';
+      break;
+    // F3
+    case 114:
+      key = '\x1bOR';
+      break;
+    // F4
+    case 115:
+      key = '\x1bOS';
+      break;
+    // F5
+    case 116:
+      key = '\x1b[15~';
+      break;
+    // F6
+    case 117:
+      key = '\x1b[17~';
+      break;
+    // F7
+    case 118:
+      key = '\x1b[18~';
+      break;
+    // F8
+    case 119:
+      key = '\x1b[19~';
+      break;
+    // F9
+    case 120:
+      key = '\x1b[20~';
+      break;
+    // F10
+    case 121:
+      key = '\x1b[21~';
+      break;
+    // F11
+    case 122:
+      key = '\x1b[23~';
+      break;
+    // F12
+    case 123:
+      key = '\x1b[24~';
+      break;
+    default:
+      // a-z and space
+      if (ev.ctrlKey) {
+        if (ev.keyCode >= 65 && ev.keyCode <= 90) {
+          // Ctrl-A
+          if (this.screenKeys) {
+            if (!this.prefixMode && !this.selectMode && ev.keyCode === 65) {
+              this.enterPrefix();
+              return cancel(ev);
+            }
+          }
+          // Ctrl-V
+          if (this.prefixMode && ev.keyCode === 86) {
+            this.leavePrefix();
+            return;
+          }
+          // Ctrl-C
+          if ((this.prefixMode || this.selectMode) && ev.keyCode === 67) {
+            if (this.visualMode) {
+              setTimeout(function() {
+                self.leaveVisual();
+              }, 1);
+            }
+            return;
+          }
+          key = String.fromCharCode(ev.keyCode - 64);
+        } else if (ev.keyCode === 32) {
+          // NUL
+          key = String.fromCharCode(0);
+        } else if (ev.keyCode >= 51 && ev.keyCode <= 55) {
+          // escape, file sep, group sep, record sep, unit sep
+          key = String.fromCharCode(ev.keyCode - 51 + 27);
+        } else if (ev.keyCode === 56) {
+          // delete
+          key = String.fromCharCode(127);
+        } else if (ev.keyCode === 219) {
+          // ^[ - escape
+          key = String.fromCharCode(27);
+        } else if (ev.keyCode === 221) {
+          // ^] - group sep
+          key = String.fromCharCode(29);
+        }
+      } else if ((!this.isMac && ev.altKey) || (this.isMac && ev.metaKey)) {
+        if (ev.keyCode >= 65 && ev.keyCode <= 90) {
+          key = '\x1b' + String.fromCharCode(ev.keyCode + 32);
+        } else if (ev.keyCode === 192) {
+          key = '\x1b`';
+        } else if (ev.keyCode >= 48 && ev.keyCode <= 57) {
+          key = '\x1b' + (ev.keyCode - 48);
+        }
+      }
+      break;
+  }
+
+  if (!key) return true;
+
+  if (this.prefixMode) {
+    this.leavePrefix();
+    return cancel(ev);
+  }
+
+  if (this.selectMode) {
+    this.keySelect(ev, key);
+    return cancel(ev);
+  }
+
+  this.emit('keydown', ev);
+  this.emit('key', key, ev);
+
+  this.showCursor();
+  this.handler(key);
+
+  return cancel(ev);
+};
+
+Terminal.prototype.setgLevel = function(g) {
+  this.glevel = g;
+  this.charset = this.charsets[g];
+};
+
+Terminal.prototype.setgCharset = function(g, charset) {
+  this.charsets[g] = charset;
+  if (this.glevel === g) {
+    this.charset = charset;
+  }
+};
+
+Terminal.prototype.keyPress = function(ev) {
+  var key;
+
+  cancel(ev);
+
+  if (ev.charCode) {
+    key = ev.charCode;
+  } else if (ev.which == null) {
+    key = ev.keyCode;
+  } else if (ev.which !== 0 && ev.charCode !== 0) {
+    key = ev.which;
+  } else {
+    return false;
+  }
+
+  if (!key || ev.ctrlKey || ev.altKey || ev.metaKey) return false;
+
+  key = String.fromCharCode(key);
+
+  if (this.prefixMode) {
+    this.leavePrefix();
+    this.keyPrefix(ev, key);
+    return false;
+  }
+
+  if (this.selectMode) {
+    this.keySelect(ev, key);
+    return false;
+  }
+
+  this.emit('keypress', key, ev);
+  this.emit('key', key, ev);
+
+  this.showCursor();
+  this.handler(key);
+
+  return false;
+};
+
+Terminal.prototype.send = function(data) {
+  var self = this;
+
+  if (!this.queue) {
+    setTimeout(function() {
+      self.handler(self.queue);
+      self.queue = '';
+    }, 1);
+  }
+
+  this.queue += data;
+};
+
+Terminal.prototype.bell = function() {
+  if (!this.visualBell) return;
+  var self = this;
+  this.element.style.borderColor = 'white';
+  setTimeout(function() {
+    self.element.style.borderColor = '';
+  }, 10);
+  if (this.popOnBell) this.focus();
+};
+
+Terminal.prototype.log = function() {
+  if (!this.debug) return;
+  if (!this.context.console || !this.context.console.log) return;
+  var args = Array.prototype.slice.call(arguments);
+  this.context.console.log.apply(this.context.console, args);
+};
+
+Terminal.prototype.error = function() {
+  if (!this.debug) return;
+  if (!this.context.console || !this.context.console.error) return;
+  var args = Array.prototype.slice.call(arguments);
+  this.context.console.error.apply(this.context.console, args);
+};
+
+Terminal.prototype.resize = function(x, y) {
+  var line
+    , el
+    , i
+    , j
+    , ch;
+
+  if (x < 1) x = 1;
+  if (y < 1) y = 1;
+
+  // resize cols
+  j = this.cols;
+  if (j < x) {
+    ch = [this.defAttr, ' ']; // does xterm use the default attr?
+    i = this.lines.length;
+    while (i--) {
+      while (this.lines[i].length < x) {
+        this.lines[i].push(ch);
+      }
+    }
+  } else if (j > x) {
+    i = this.lines.length;
+    while (i--) {
+      while (this.lines[i].length > x) {
+        this.lines[i].pop();
+      }
+    }
+  }
+  this.setupStops(j);
+  this.cols = x;
+
+  // resize rows
+  j = this.rows;
+  if (j < y) {
+    el = this.element;
+    while (j++ < y) {
+      if (this.lines.length < y + this.ybase) {
+        this.lines.push(this.blankLine());
+      }
+      if (this.children.length < y) {
+        line = this.document.createElement('div');
+        el.appendChild(line);
+        this.children.push(line);
+      }
+    }
+  } else if (j > y) {
+    while (j-- > y) {
+      if (this.lines.length > y + this.ybase) {
+        this.lines.pop();
+      }
+      if (this.children.length > y) {
+        el = this.children.pop();
+        if (!el) continue;
+        el.parentNode.removeChild(el);
+      }
+    }
+  }
+  this.rows = y;
+
+  // make sure the cursor stays on screen
+  if (this.y >= y) this.y = y - 1;
+  if (this.x >= x) this.x = x - 1;
+
+  this.scrollTop = 0;
+  this.scrollBottom = y - 1;
+
+  this.refresh(0, this.rows - 1);
+
+  // it's a real nightmare trying
+  // to resize the original
+  // screen buffer. just set it
+  // to null for now.
+  this.normal = null;
+};
+
+Terminal.prototype.updateRange = function(y) {
+  if (y < this.refreshStart) this.refreshStart = y;
+  if (y > this.refreshEnd) this.refreshEnd = y;
+  // if (y > this.refreshEnd) {
+  //   this.refreshEnd = y;
+  //   if (y > this.rows - 1) {
+  //     this.refreshEnd = this.rows - 1;
+  //   }
+  // }
+};
+
+Terminal.prototype.maxRange = function() {
+  this.refreshStart = 0;
+  this.refreshEnd = this.rows - 1;
+};
+
+Terminal.prototype.setupStops = function(i) {
+  if (i != null) {
+    if (!this.tabs[i]) {
+      i = this.prevStop(i);
+    }
+  } else {
+    this.tabs = {};
+    i = 0;
+  }
+
+  for (; i < this.cols; i += 8) {
+    this.tabs[i] = true;
+  }
+};
+
+Terminal.prototype.prevStop = function(x) {
+  if (x == null) x = this.x;
+  while (!this.tabs[--x] && x > 0);
+  return x >= this.cols
+    ? this.cols - 1
+    : x < 0 ? 0 : x;
+};
+
+Terminal.prototype.nextStop = function(x) {
+  if (x == null) x = this.x;
+  while (!this.tabs[++x] && x < this.cols);
+  return x >= this.cols
+    ? this.cols - 1
+    : x < 0 ? 0 : x;
+};
+
+Terminal.prototype.eraseRight = function(x, y) {
+  var line = this.lines[this.ybase + y]
+    , ch = [this.eraseAttr(), ' ']; // xterm
+
+
+  for (; x < this.cols; x++) {
+    line[x] = ch;
+  }
+
+  this.updateRange(y);
+};
+
+Terminal.prototype.eraseLeft = function(x, y) {
+  var line = this.lines[this.ybase + y]
+    , ch = [this.eraseAttr(), ' ']; // xterm
+
+  x++;
+  while (x--) line[x] = ch;
+
+  this.updateRange(y);
+};
+
+Terminal.prototype.eraseLine = function(y) {
+  this.eraseRight(0, y);
+};
+
+Terminal.prototype.blankLine = function(cur) {
+  var attr = cur
+    ? this.eraseAttr()
+    : this.defAttr;
+
+  var ch = [attr, ' ']
+    , line = []
+    , i = 0;
+
+  for (; i < this.cols; i++) {
+    line[i] = ch;
+  }
+
+  return line;
+};
+
+Terminal.prototype.ch = function(cur) {
+  return cur
+    ? [this.eraseAttr(), ' ']
+    : [this.defAttr, ' '];
+};
+
+Terminal.prototype.is = function(term) {
+  var name = this.termName;
+  return (name + '').indexOf(term) === 0;
+};
+
+Terminal.prototype.handler = function(data) {
+  this.emit('data', data);
+};
+
+Terminal.prototype.handleTitle = function(title) {
+  this.emit('title', title);
+};
+
+/**
+ * ESC
+ */
+
+// ESC D Index (IND is 0x84).
+Terminal.prototype.index = function() {
+  this.y++;
+  if (this.y > this.scrollBottom) {
+    this.y--;
+    this.scroll();
+  }
+  this.state = normal;
+};
+
+// ESC M Reverse Index (RI is 0x8d).
+Terminal.prototype.reverseIndex = function() {
+  var j;
+  this.y--;
+  if (this.y < this.scrollTop) {
+    this.y++;
+    // possibly move the code below to term.reverseScroll();
+    // test: echo -ne '\e[1;1H\e[44m\eM\e[0m'
+    // blankLine(true) is xterm/linux behavior
+    this.lines.splice(this.y + this.ybase, 0, this.blankLine(true));
+    j = this.rows - 1 - this.scrollBottom;
+    this.lines.splice(this.rows - 1 + this.ybase - j + 1, 1);
+    // this.maxRange();
+    this.updateRange(this.scrollTop);
+    this.updateRange(this.scrollBottom);
+  }
+  this.state = normal;
+};
+
+// ESC c Full Reset (RIS).
+Terminal.prototype.reset = function() {
+  this.options.rows = this.rows;
+  this.options.cols = this.cols;
+  Terminal.call(this, this.options);
+  this.refresh(0, this.rows - 1);
+};
+
+// ESC H Tab Set (HTS is 0x88).
+Terminal.prototype.tabSet = function() {
+  this.tabs[this.x] = true;
+  this.state = normal;
+};
+
+/**
+ * CSI
+ */
+
+// CSI Ps A
+// Cursor Up Ps Times (default = 1) (CUU).
+Terminal.prototype.cursorUp = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.y -= param;
+  if (this.y < 0) this.y = 0;
+};
+
+// CSI Ps B
+// Cursor Down Ps Times (default = 1) (CUD).
+Terminal.prototype.cursorDown = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.y += param;
+  if (this.y >= this.rows) {
+    this.y = this.rows - 1;
+  }
+};
+
+// CSI Ps C
+// Cursor Forward Ps Times (default = 1) (CUF).
+Terminal.prototype.cursorForward = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.x += param;
+  if (this.x >= this.cols) {
+    this.x = this.cols - 1;
+  }
+};
+
+// CSI Ps D
+// Cursor Backward Ps Times (default = 1) (CUB).
+Terminal.prototype.cursorBackward = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.x -= param;
+  if (this.x < 0) this.x = 0;
+};
+
+// CSI Ps ; Ps H
+// Cursor Position [row;column] (default = [1,1]) (CUP).
+Terminal.prototype.cursorPos = function(params) {
+  var row, col;
+
+  row = params[0] - 1;
+
+  if (params.length >= 2) {
+    col = params[1] - 1;
+  } else {
+    col = 0;
+  }
+
+  if (row < 0) {
+    row = 0;
+  } else if (row >= this.rows) {
+    row = this.rows - 1;
+  }
+
+  if (col < 0) {
+    col = 0;
+  } else if (col >= this.cols) {
+    col = this.cols - 1;
+  }
+
+  this.x = col;
+  this.y = row;
+};
+
+// CSI Ps J  Erase in Display (ED).
+//     Ps = 0  -> Erase Below (default).
+//     Ps = 1  -> Erase Above.
+//     Ps = 2  -> Erase All.
+//     Ps = 3  -> Erase Saved Lines (xterm).
+// CSI ? Ps J
+//   Erase in Display (DECSED).
+//     Ps = 0  -> Selective Erase Below (default).
+//     Ps = 1  -> Selective Erase Above.
+//     Ps = 2  -> Selective Erase All.
+Terminal.prototype.eraseInDisplay = function(params) {
+  var j;
+  switch (params[0]) {
+    case 0:
+      this.eraseRight(this.x, this.y);
+      j = this.y + 1;
+      for (; j < this.rows; j++) {
+        this.eraseLine(j);
+      }
+      break;
+    case 1:
+      this.eraseLeft(this.x, this.y);
+      j = this.y;
+      while (j--) {
+        this.eraseLine(j);
+      }
+      break;
+    case 2:
+      j = this.rows;
+      while (j--) this.eraseLine(j);
+      break;
+    case 3:
+      ; // no saved lines
+      break;
+  }
+};
+
+// CSI Ps K  Erase in Line (EL).
+//     Ps = 0  -> Erase to Right (default).
+//     Ps = 1  -> Erase to Left.
+//     Ps = 2  -> Erase All.
+// CSI ? Ps K
+//   Erase in Line (DECSEL).
+//     Ps = 0  -> Selective Erase to Right (default).
+//     Ps = 1  -> Selective Erase to Left.
+//     Ps = 2  -> Selective Erase All.
+Terminal.prototype.eraseInLine = function(params) {
+  switch (params[0]) {
+    case 0:
+      this.eraseRight(this.x, this.y);
+      break;
+    case 1:
+      this.eraseLeft(this.x, this.y);
+      break;
+    case 2:
+      this.eraseLine(this.y);
+      break;
+  }
+};
+
+// CSI Pm m  Character Attributes (SGR).
+//     Ps = 0  -> Normal (default).
+//     Ps = 1  -> Bold.
+//     Ps = 4  -> Underlined.
+//     Ps = 5  -> Blink (appears as Bold).
+//     Ps = 7  -> Inverse.
+//     Ps = 8  -> Invisible, i.e., hidden (VT300).
+//     Ps = 2 2  -> Normal (neither bold nor faint).
+//     Ps = 2 4  -> Not underlined.
+//     Ps = 2 5  -> Steady (not blinking).
+//     Ps = 2 7  -> Positive (not inverse).
+//     Ps = 2 8  -> Visible, i.e., not hidden (VT300).
+//     Ps = 3 0  -> Set foreground color to Black.
+//     Ps = 3 1  -> Set foreground color to Red.
+//     Ps = 3 2  -> Set foreground color to Green.
+//     Ps = 3 3  -> Set foreground color to Yellow.
+//     Ps = 3 4  -> Set foreground color to Blue.
+//     Ps = 3 5  -> Set foreground color to Magenta.
+//     Ps = 3 6  -> Set foreground color to Cyan.
+//     Ps = 3 7  -> Set foreground color to White.
+//     Ps = 3 9  -> Set foreground color to default (original).
+//     Ps = 4 0  -> Set background color to Black.
+//     Ps = 4 1  -> Set background color to Red.
+//     Ps = 4 2  -> Set background color to Green.
+//     Ps = 4 3  -> Set background color to Yellow.
+//     Ps = 4 4  -> Set background color to Blue.
+//     Ps = 4 5  -> Set background color to Magenta.
+//     Ps = 4 6  -> Set background color to Cyan.
+//     Ps = 4 7  -> Set background color to White.
+//     Ps = 4 9  -> Set background color to default (original).
+
+//   If 16-color support is compiled, the following apply.  Assume
+//   that xterm's resources are set so that the ISO color codes are
+//   the first 8 of a set of 16.  Then the aixterm colors are the
+//   bright versions of the ISO colors:
+//     Ps = 9 0  -> Set foreground color to Black.
+//     Ps = 9 1  -> Set foreground color to Red.
+//     Ps = 9 2  -> Set foreground color to Green.
+//     Ps = 9 3  -> Set foreground color to Yellow.
+//     Ps = 9 4  -> Set foreground color to Blue.
+//     Ps = 9 5  -> Set foreground color to Magenta.
+//     Ps = 9 6  -> Set foreground color to Cyan.
+//     Ps = 9 7  -> Set foreground color to White.
+//     Ps = 1 0 0  -> Set background color to Black.
+//     Ps = 1 0 1  -> Set background color to Red.
+//     Ps = 1 0 2  -> Set background color to Green.
+//     Ps = 1 0 3  -> Set background color to Yellow.
+//     Ps = 1 0 4  -> Set background color to Blue.
+//     Ps = 1 0 5  -> Set background color to Magenta.
+//     Ps = 1 0 6  -> Set background color to Cyan.
+//     Ps = 1 0 7  -> Set background color to White.
+
+//   If xterm is compiled with the 16-color support disabled, it
+//   supports the following, from rxvt:
+//     Ps = 1 0 0  -> Set foreground and background color to
+//     default.
+
+//   If 88- or 256-color support is compiled, the following apply.
+//     Ps = 3 8  ; 5  ; Ps -> Set foreground color to the second
+//     Ps.
+//     Ps = 4 8  ; 5  ; Ps -> Set background color to the second
+//     Ps.
+Terminal.prototype.charAttributes = function(params) {
+  // Optimize a single SGR0.
+  if (params.length === 1 && params[0] === 0) {
+    this.curAttr = this.defAttr;
+    return;
+  }
+
+  var l = params.length
+    , i = 0
+    , flags = this.curAttr >> 18
+    , fg = (this.curAttr >> 9) & 0x1ff
+    , bg = this.curAttr & 0x1ff
+    , p;
+
+  for (; i < l; i++) {
+    p = params[i];
+    if (p >= 30 && p <= 37) {
+      // fg color 8
+      fg = p - 30;
+    } else if (p >= 40 && p <= 47) {
+      // bg color 8
+      bg = p - 40;
+    } else if (p >= 90 && p <= 97) {
+      // fg color 16
+      p += 8;
+      fg = p - 90;
+    } else if (p >= 100 && p <= 107) {
+      // bg color 16
+      p += 8;
+      bg = p - 100;
+    } else if (p === 0) {
+      // default
+      flags = this.defAttr >> 18;
+      fg = (this.defAttr >> 9) & 0x1ff;
+      bg = this.defAttr & 0x1ff;
+      // flags = 0;
+      // fg = 0x1ff;
+      // bg = 0x1ff;
+    } else if (p === 1) {
+      // bold text
+      flags |= 1;
+    } else if (p === 4) {
+      // underlined text
+      flags |= 2;
+    } else if (p === 5) {
+      // blink
+      flags |= 4;
+    } else if (p === 7) {
+      // inverse and positive
+      // test with: echo -e '\e[31m\e[42mhello\e[7mworld\e[27mhi\e[m'
+      flags |= 8;
+    } else if (p === 8) {
+      // invisible
+      flags |= 16;
+    } else if (p === 22) {
+      // not bold
+      flags &= ~1;
+    } else if (p === 24) {
+      // not underlined
+      flags &= ~2;
+    } else if (p === 25) {
+      // not blink
+      flags &= ~4;
+    } else if (p === 27) {
+      // not inverse
+      flags &= ~8;
+    } else if (p === 28) {
+      // not invisible
+      flags &= ~16;
+    } else if (p === 39) {
+      // reset fg
+      fg = (this.defAttr >> 9) & 0x1ff;
+    } else if (p === 49) {
+      // reset bg
+      bg = this.defAttr & 0x1ff;
+    } else if (p === 38) {
+      // fg color 256
+      if (params[i + 1] === 2) {
+        i += 2;
+        fg = matchColor(
+          params[i] & 0xff,
+          params[i + 1] & 0xff,
+          params[i + 2] & 0xff);
+        if (fg === -1) fg = 0x1ff;
+        i += 2;
+      } else if (params[i + 1] === 5) {
+        i += 2;
+        p = params[i] & 0xff;
+        fg = p;
+      }
+    } else if (p === 48) {
+      // bg color 256
+      if (params[i + 1] === 2) {
+        i += 2;
+        bg = matchColor(
+          params[i] & 0xff,
+          params[i + 1] & 0xff,
+          params[i + 2] & 0xff);
+        if (bg === -1) bg = 0x1ff;
+        i += 2;
+      } else if (params[i + 1] === 5) {
+        i += 2;
+        p = params[i] & 0xff;
+        bg = p;
+      }
+    } else if (p === 100) {
+      // reset fg/bg
+      fg = (this.defAttr >> 9) & 0x1ff;
+      bg = this.defAttr & 0x1ff;
+    } else {
+      this.error('Unknown SGR attribute: %d.', p);
+    }
+  }
+
+  this.curAttr = (flags << 18) | (fg << 9) | bg;
+};
+
+// CSI Ps n  Device Status Report (DSR).
+//     Ps = 5  -> Status Report.  Result (``OK'') is
+//   CSI 0 n
+//     Ps = 6  -> Report Cursor Position (CPR) [row;column].
+//   Result is
+//   CSI r ; c R
+// CSI ? Ps n
+//   Device Status Report (DSR, DEC-specific).
+//     Ps = 6  -> Report Cursor Position (CPR) [row;column] as CSI
+//     ? r ; c R (assumes page is zero).
+//     Ps = 1 5  -> Report Printer status as CSI ? 1 0  n  (ready).
+//     or CSI ? 1 1  n  (not ready).
+//     Ps = 2 5  -> Report UDK status as CSI ? 2 0  n  (unlocked)
+//     or CSI ? 2 1  n  (locked).
+//     Ps = 2 6  -> Report Keyboard status as
+//   CSI ? 2 7  ;  1  ;  0  ;  0  n  (North American).
+//   The last two parameters apply to VT400 & up, and denote key-
+//   board ready and LK01 respectively.
+//     Ps = 5 3  -> Report Locator status as
+//   CSI ? 5 3  n  Locator available, if compiled-in, or
+//   CSI ? 5 0  n  No Locator, if not.
+Terminal.prototype.deviceStatus = function(params) {
+  if (!this.prefix) {
+    switch (params[0]) {
+      case 5:
+        // status report
+        this.send('\x1b[0n');
+        break;
+      case 6:
+        // cursor position
+        this.send('\x1b['
+          + (this.y + 1)
+          + ';'
+          + (this.x + 1)
+          + 'R');
+        break;
+    }
+  } else if (this.prefix === '?') {
+    // modern xterm doesnt seem to
+    // respond to any of these except ?6, 6, and 5
+    switch (params[0]) {
+      case 6:
+        // cursor position
+        this.send('\x1b[?'
+          + (this.y + 1)
+          + ';'
+          + (this.x + 1)
+          + 'R');
+        break;
+      case 15:
+        // no printer
+        // this.send('\x1b[?11n');
+        break;
+      case 25:
+        // dont support user defined keys
+        // this.send('\x1b[?21n');
+        break;
+      case 26:
+        // north american keyboard
+        // this.send('\x1b[?27;1;0;0n');
+        break;
+      case 53:
+        // no dec locator/mouse
+        // this.send('\x1b[?50n');
+        break;
+    }
+  }
+};
+
+/**
+ * Additions
+ */
+
+// CSI Ps @
+// Insert Ps (Blank) Character(s) (default = 1) (ICH).
+Terminal.prototype.insertChars = function(params) {
+  var param, row, j, ch;
+
+  param = params[0];
+  if (param < 1) param = 1;
+
+  row = this.y + this.ybase;
+  j = this.x;
+  ch = [this.eraseAttr(), ' ']; // xterm
+
+  while (param-- && j < this.cols) {
+    this.lines[row].splice(j++, 0, ch);
+    this.lines[row].pop();
+  }
+};
+
+// CSI Ps E
+// Cursor Next Line Ps Times (default = 1) (CNL).
+// same as CSI Ps B ?
+Terminal.prototype.cursorNextLine = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.y += param;
+  if (this.y >= this.rows) {
+    this.y = this.rows - 1;
+  }
+  this.x = 0;
+};
+
+// CSI Ps F
+// Cursor Preceding Line Ps Times (default = 1) (CNL).
+// reuse CSI Ps A ?
+Terminal.prototype.cursorPrecedingLine = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.y -= param;
+  if (this.y < 0) this.y = 0;
+  this.x = 0;
+};
+
+// CSI Ps G
+// Cursor Character Absolute  [column] (default = [row,1]) (CHA).
+Terminal.prototype.cursorCharAbsolute = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.x = param - 1;
+};
+
+// CSI Ps L
+// Insert Ps Line(s) (default = 1) (IL).
+Terminal.prototype.insertLines = function(params) {
+  var param, row, j;
+
+  param = params[0];
+  if (param < 1) param = 1;
+  row = this.y + this.ybase;
+
+  j = this.rows - 1 - this.scrollBottom;
+  j = this.rows - 1 + this.ybase - j + 1;
+
+  while (param--) {
+    // test: echo -e '\e[44m\e[1L\e[0m'
+    // blankLine(true) - xterm/linux behavior
+    this.lines.splice(row, 0, this.blankLine(true));
+    this.lines.splice(j, 1);
+  }
+
+  // this.maxRange();
+  this.updateRange(this.y);
+  this.updateRange(this.scrollBottom);
+};
+
+// CSI Ps M
+// Delete Ps Line(s) (default = 1) (DL).
+Terminal.prototype.deleteLines = function(params) {
+  var param, row, j;
+
+  param = params[0];
+  if (param < 1) param = 1;
+  row = this.y + this.ybase;
+
+  j = this.rows - 1 - this.scrollBottom;
+  j = this.rows - 1 + this.ybase - j;
+
+  while (param--) {
+    // test: echo -e '\e[44m\e[1M\e[0m'
+    // blankLine(true) - xterm/linux behavior
+    this.lines.splice(j + 1, 0, this.blankLine(true));
+    this.lines.splice(row, 1);
+  }
+
+  // this.maxRange();
+  this.updateRange(this.y);
+  this.updateRange(this.scrollBottom);
+};
+
+// CSI Ps P
+// Delete Ps Character(s) (default = 1) (DCH).
+Terminal.prototype.deleteChars = function(params) {
+  var param, row, ch;
+
+  param = params[0];
+  if (param < 1) param = 1;
+
+  row = this.y + this.ybase;
+  ch = [this.eraseAttr(), ' ']; // xterm
+
+  while (param--) {
+    this.lines[row].splice(this.x, 1);
+    this.lines[row].push(ch);
+  }
+};
+
+// CSI Ps X
+// Erase Ps Character(s) (default = 1) (ECH).
+Terminal.prototype.eraseChars = function(params) {
+  var param, row, j, ch;
+
+  param = params[0];
+  if (param < 1) param = 1;
+
+  row = this.y + this.ybase;
+  j = this.x;
+  ch = [this.eraseAttr(), ' ']; // xterm
+
+  while (param-- && j < this.cols) {
+    this.lines[row][j++] = ch;
+  }
+};
+
+// CSI Pm `  Character Position Absolute
+//   [column] (default = [row,1]) (HPA).
+Terminal.prototype.charPosAbsolute = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.x = param - 1;
+  if (this.x >= this.cols) {
+    this.x = this.cols - 1;
+  }
+};
+
+// 141 61 a * HPR -
+// Horizontal Position Relative
+// reuse CSI Ps C ?
+Terminal.prototype.HPositionRelative = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.x += param;
+  if (this.x >= this.cols) {
+    this.x = this.cols - 1;
+  }
+};
+
+// CSI Ps c  Send Device Attributes (Primary DA).
+//     Ps = 0  or omitted -> request attributes from terminal.  The
+//     response depends on the decTerminalID resource setting.
+//     -> CSI ? 1 ; 2 c  (``VT100 with Advanced Video Option'')
+//     -> CSI ? 1 ; 0 c  (``VT101 with No Options'')
+//     -> CSI ? 6 c  (``VT102'')
+//     -> CSI ? 6 0 ; 1 ; 2 ; 6 ; 8 ; 9 ; 1 5 ; c  (``VT220'')
+//   The VT100-style response parameters do not mean anything by
+//   themselves.  VT220 parameters do, telling the host what fea-
+//   tures the terminal supports:
+//     Ps = 1  -> 132-columns.
+//     Ps = 2  -> Printer.
+//     Ps = 6  -> Selective erase.
+//     Ps = 8  -> User-defined keys.
+//     Ps = 9  -> National replacement character sets.
+//     Ps = 1 5  -> Technical characters.
+//     Ps = 2 2  -> ANSI color, e.g., VT525.
+//     Ps = 2 9  -> ANSI text locator (i.e., DEC Locator mode).
+// CSI > Ps c
+//   Send Device Attributes (Secondary DA).
+//     Ps = 0  or omitted -> request the terminal's identification
+//     code.  The response depends on the decTerminalID resource set-
+//     ting.  It should apply only to VT220 and up, but xterm extends
+//     this to VT100.
+//     -> CSI  > Pp ; Pv ; Pc c
+//   where Pp denotes the terminal type
+//     Pp = 0  -> ``VT100''.
+//     Pp = 1  -> ``VT220''.
+//   and Pv is the firmware version (for xterm, this was originally
+//   the XFree86 patch number, starting with 95).  In a DEC termi-
+//   nal, Pc indicates the ROM cartridge registration number and is
+//   always zero.
+// More information:
+//   xterm/charproc.c - line 2012, for more information.
+//   vim responds with ^[[?0c or ^[[?1c after the terminal's response (?)
+Terminal.prototype.sendDeviceAttributes = function(params) {
+  if (params[0] > 0) return;
+
+  if (!this.prefix) {
+    if (this.is('xterm')
+        || this.is('rxvt-unicode')
+        || this.is('screen')) {
+      this.send('\x1b[?1;2c');
+    } else if (this.is('linux')) {
+      this.send('\x1b[?6c');
+    }
+  } else if (this.prefix === '>') {
+    // xterm and urxvt
+    // seem to spit this
+    // out around ~370 times (?).
+    if (this.is('xterm')) {
+      this.send('\x1b[>0;276;0c');
+    } else if (this.is('rxvt-unicode')) {
+      this.send('\x1b[>85;95;0c');
+    } else if (this.is('linux')) {
+      // not supported by linux console.
+      // linux console echoes parameters.
+      this.send(params[0] + 'c');
+    } else if (this.is('screen')) {
+      this.send('\x1b[>83;40003;0c');
+    }
+  }
+};
+
+// CSI Pm d
+// Line Position Absolute  [row] (default = [1,column]) (VPA).
+Terminal.prototype.linePosAbsolute = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.y = param - 1;
+  if (this.y >= this.rows) {
+    this.y = this.rows - 1;
+  }
+};
+
+// 145 65 e * VPR - Vertical Position Relative
+// reuse CSI Ps B ?
+Terminal.prototype.VPositionRelative = function(params) {
+  var param = params[0];
+  if (param < 1) param = 1;
+  this.y += param;
+  if (this.y >= this.rows) {
+    this.y = this.rows - 1;
+  }
+};
+
+// CSI Ps ; Ps f
+//   Horizontal and Vertical Position [row;column] (default =
+//   [1,1]) (HVP).
+Terminal.prototype.HVPosition = function(params) {
+  if (params[0] < 1) params[0] = 1;
+  if (params[1] < 1) params[1] = 1;
+
+  this.y = params[0] - 1;
+  if (this.y >= this.rows) {
+    this.y = this.rows - 1;
+  }
+
+  this.x = params[1] - 1;
+  if (this.x >= this.cols) {
+    this.x = this.cols - 1;
+  }
+};
+
+// CSI Pm h  Set Mode (SM).
+//     Ps = 2  -> Keyboard Action Mode (AM).
+//     Ps = 4  -> Insert Mode (IRM).
+//     Ps = 1 2  -> Send/receive (SRM).
+//     Ps = 2 0  -> Automatic Newline (LNM).
+// CSI ? Pm h
+//   DEC Private Mode Set (DECSET).
+//     Ps = 1  -> Application Cursor Keys (DECCKM).
+//     Ps = 2  -> Designate USASCII for character sets G0-G3
+//     (DECANM), and set VT100 mode.
+//     Ps = 3  -> 132 Column Mode (DECCOLM).
+//     Ps = 4  -> Smooth (Slow) Scroll (DECSCLM).
+//     Ps = 5  -> Reverse Video (DECSCNM).
+//     Ps = 6  -> Origin Mode (DECOM).
+//     Ps = 7  -> Wraparound Mode (DECAWM).
+//     Ps = 8  -> Auto-repeat Keys (DECARM).
+//     Ps = 9  -> Send Mouse X & Y on button press.  See the sec-
+//     tion Mouse Tracking.
+//     Ps = 1 0  -> Show toolbar (rxvt).
+//     Ps = 1 2  -> Start Blinking Cursor (att610).
+//     Ps = 1 8  -> Print form feed (DECPFF).
+//     Ps = 1 9  -> Set print extent to full screen (DECPEX).
+//     Ps = 2 5  -> Show Cursor (DECTCEM).
+//     Ps = 3 0  -> Show scrollbar (rxvt).
+//     Ps = 3 5  -> Enable font-shifting functions (rxvt).
+//     Ps = 3 8  -> Enter Tektronix Mode (DECTEK).
+//     Ps = 4 0  -> Allow 80 -> 132 Mode.
+//     Ps = 4 1  -> more(1) fix (see curses resource).
+//     Ps = 4 2  -> Enable Nation Replacement Character sets (DECN-
+//     RCM).
+//     Ps = 4 4  -> Turn On Margin Bell.
+//     Ps = 4 5  -> Reverse-wraparound Mode.
+//     Ps = 4 6  -> Start Logging.  This is normally disabled by a
+//     compile-time option.
+//     Ps = 4 7  -> Use Alternate Screen Buffer.  (This may be dis-
+//     abled by the titeInhibit resource).
+//     Ps = 6 6  -> Application keypad (DECNKM).
+//     Ps = 6 7  -> Backarrow key sends backspace (DECBKM).
+//     Ps = 1 0 0 0  -> Send Mouse X & Y on button press and
+//     release.  See the section Mouse Tracking.
+//     Ps = 1 0 0 1  -> Use Hilite Mouse Tracking.
+//     Ps = 1 0 0 2  -> Use Cell Motion Mouse Tracking.
+//     Ps = 1 0 0 3  -> Use All Motion Mouse Tracking.
+//     Ps = 1 0 0 4  -> Send FocusIn/FocusOut events.
+//     Ps = 1 0 0 5  -> Enable Extended Mouse Mode.
+//     Ps = 1 0 1 0  -> Scroll to bottom on tty output (rxvt).
+//     Ps = 1 0 1 1  -> Scroll to bottom on key press (rxvt).
+//     Ps = 1 0 3 4  -> Interpret "meta" key, sets eighth bit.
+//     (enables the eightBitInput resource).
+//     Ps = 1 0 3 5  -> Enable special modifiers for Alt and Num-
+//     Lock keys.  (This enables the numLock resource).
+//     Ps = 1 0 3 6  -> Send ESC   when Meta modifies a key.  (This
+//     enables the metaSendsEscape resource).
+//     Ps = 1 0 3 7  -> Send DEL from the editing-keypad Delete
+//     key.
+//     Ps = 1 0 3 9  -> Send ESC  when Alt modifies a key.  (This
+//     enables the altSendsEscape resource).
+//     Ps = 1 0 4 0  -> Keep selection even if not highlighted.
+//     (This enables the keepSelection resource).
+//     Ps = 1 0 4 1  -> Use the CLIPBOARD selection.  (This enables
+//     the selectToClipboard resource).
+//     Ps = 1 0 4 2  -> Enable Urgency window manager hint when
+//     Control-G is received.  (This enables the bellIsUrgent
+//     resource).
+//     Ps = 1 0 4 3  -> Enable raising of the window when Control-G
+//     is received.  (enables the popOnBell resource).
+//     Ps = 1 0 4 7  -> Use Alternate Screen Buffer.  (This may be
+//     disabled by the titeInhibit resource).
+//     Ps = 1 0 4 8  -> Save cursor as in DECSC.  (This may be dis-
+//     abled by the titeInhibit resource).
+//     Ps = 1 0 4 9  -> Save cursor as in DECSC and use Alternate
+//     Screen Buffer, clearing it first.  (This may be disabled by
+//     the titeInhibit resource).  This combines the effects of the 1
+//     0 4 7  and 1 0 4 8  modes.  Use this with terminfo-based
+//     applications rather than the 4 7  mode.
+//     Ps = 1 0 5 0  -> Set terminfo/termcap function-key mode.
+//     Ps = 1 0 5 1  -> Set Sun function-key mode.
+//     Ps = 1 0 5 2  -> Set HP function-key mode.
+//     Ps = 1 0 5 3  -> Set SCO function-key mode.
+//     Ps = 1 0 6 0  -> Set legacy keyboard emulation (X11R6).
+//     Ps = 1 0 6 1  -> Set VT220 keyboard emulation.
+//     Ps = 2 0 0 4  -> Set bracketed paste mode.
+// Modes:
+//   http://vt100.net/docs/vt220-rm/chapter4.html
+Terminal.prototype.setMode = function(params) {
+  if (typeof params === 'object') {
+    var l = params.length
+      , i = 0;
+
+    for (; i < l; i++) {
+      this.setMode(params[i]);
+    }
+
+    return;
+  }
+
+  if (!this.prefix) {
+    switch (params) {
+      case 4:
+        this.insertMode = true;
+        break;
+      case 20:
+        //this.convertEol = true;
+        break;
+    }
+  } else if (this.prefix === '?') {
+    switch (params) {
+      case 1:
+        this.applicationCursor = true;
+        break;
+      case 2:
+        this.setgCharset(0, Terminal.charsets.US);
+        this.setgCharset(1, Terminal.charsets.US);
+        this.setgCharset(2, Terminal.charsets.US);
+        this.setgCharset(3, Terminal.charsets.US);
+        // set VT100 mode here
+        break;
+      case 3: // 132 col mode
+        this.savedCols = this.cols;
+        this.resize(132, this.rows);
+        break;
+      case 6:
+        this.originMode = true;
+        break;
+      case 7:
+        this.wraparoundMode = true;
+        break;
+      case 12:
+        // this.cursorBlink = true;
+        break;
+      case 66:
+        this.log('Serial port requested application keypad.');
+        this.applicationKeypad = true;
+        break;
+      case 9: // X10 Mouse
+        // no release, no motion, no wheel, no modifiers.
+      case 1000: // vt200 mouse
+        // no motion.
+        // no modifiers, except control on the wheel.
+      case 1002: // button event mouse
+      case 1003: // any event mouse
+        // any event - sends motion events,
+        // even if there is no button held down.
+        this.x10Mouse = params === 9;
+        this.vt200Mouse = params === 1000;
+        this.normalMouse = params > 1000;
+        this.mouseEvents = true;
+        this.element.style.cursor = 'default';
+        this.log('Binding to mouse events.');
+        break;
+      case 1004: // send focusin/focusout events
+        // focusin: ^[[I
+        // focusout: ^[[O
+        this.sendFocus = true;
+        break;
+      case 1005: // utf8 ext mode mouse
+        this.utfMouse = true;
+        // for wide terminals
+        // simply encodes large values as utf8 characters
+        break;
+      case 1006: // sgr ext mode mouse
+        this.sgrMouse = true;
+        // for wide terminals
+        // does not add 32 to fields
+        // press: ^[[<b;x;yM
+        // release: ^[[<b;x;ym
+        break;
+      case 1015: // urxvt ext mode mouse
+        this.urxvtMouse = true;
+        // for wide terminals
+        // numbers for fields
+        // press: ^[[b;x;yM
+        // motion: ^[[b;x;yT
+        break;
+      case 25: // show cursor
+        this.cursorHidden = false;
+        break;
+      case 1049: // alt screen buffer cursor
+        //this.saveCursor();
+        ; // FALL-THROUGH
+      case 47: // alt screen buffer
+      case 1047: // alt screen buffer
+        if (!this.normal) {
+          var normal = {
+            lines: this.lines,
+            ybase: this.ybase,
+            ydisp: this.ydisp,
+            x: this.x,
+            y: this.y,
+            scrollTop: this.scrollTop,
+            scrollBottom: this.scrollBottom,
+            tabs: this.tabs
+            // XXX save charset(s) here?
+            // charset: this.charset,
+            // glevel: this.glevel,
+            // charsets: this.charsets
+          };
+          this.reset();
+          this.normal = normal;
+          this.showCursor();
+        }
+        break;
+    }
+  }
+};
+
+// CSI Pm l  Reset Mode (RM).
+//     Ps = 2  -> Keyboard Action Mode (AM).
+//     Ps = 4  -> Replace Mode (IRM).
+//     Ps = 1 2  -> Send/receive (SRM).
+//     Ps = 2 0  -> Normal Linefeed (LNM).
+// CSI ? Pm l
+//   DEC Private Mode Reset (DECRST).
+//     Ps = 1  -> Normal Cursor Keys (DECCKM).
+//     Ps = 2  -> Designate VT52 mode (DECANM).
+//     Ps = 3  -> 80 Column Mode (DECCOLM).
+//     Ps = 4  -> Jump (Fast) Scroll (DECSCLM).
+//     Ps = 5  -> Normal Video (DECSCNM).
+//     Ps = 6  -> Normal Cursor Mode (DECOM).
+//     Ps = 7  -> No Wraparound Mode (DECAWM).
+//     Ps = 8  -> No Auto-repeat Keys (DECARM).
+//     Ps = 9  -> Don't send Mouse X & Y on button press.
+//     Ps = 1 0  -> Hide toolbar (rxvt).
+//     Ps = 1 2  -> Stop Blinking Cursor (att610).
+//     Ps = 1 8  -> Don't print form feed (DECPFF).
+//     Ps = 1 9  -> Limit print to scrolling region (DECPEX).
+//     Ps = 2 5  -> Hide Cursor (DECTCEM).
+//     Ps = 3 0  -> Don't show scrollbar (rxvt).
+//     Ps = 3 5  -> Disable font-shifting functions (rxvt).
+//     Ps = 4 0  -> Disallow 80 -> 132 Mode.
+//     Ps = 4 1  -> No more(1) fix (see curses resource).
+//     Ps = 4 2  -> Disable Nation Replacement Character sets (DEC-
+//     NRCM).
+//     Ps = 4 4  -> Turn Off Margin Bell.
+//     Ps = 4 5  -> No Reverse-wraparound Mode.
+//     Ps = 4 6  -> Stop Logging.  (This is normally disabled by a
+//     compile-time option).
+//     Ps = 4 7  -> Use Normal Screen Buffer.
+//     Ps = 6 6  -> Numeric keypad (DECNKM).
+//     Ps = 6 7  -> Backarrow key sends delete (DECBKM).
+//     Ps = 1 0 0 0  -> Don't send Mouse X & Y on button press and
+//     release.  See the section Mouse Tracking.
+//     Ps = 1 0 0 1  -> Don't use Hilite Mouse Tracking.
+//     Ps = 1 0 0 2  -> Don't use Cell Motion Mouse Tracking.
+//     Ps = 1 0 0 3  -> Don't use All Motion Mouse Tracking.
+//     Ps = 1 0 0 4  -> Don't send FocusIn/FocusOut events.
+//     Ps = 1 0 0 5  -> Disable Extended Mouse Mode.
+//     Ps = 1 0 1 0  -> Don't scroll to bottom on tty output
+//     (rxvt).
+//     Ps = 1 0 1 1  -> Don't scroll to bottom on key press (rxvt).
+//     Ps = 1 0 3 4  -> Don't interpret "meta" key.  (This disables
+//     the eightBitInput resource).
+//     Ps = 1 0 3 5  -> Disable special modifiers for Alt and Num-
+//     Lock keys.  (This disables the numLock resource).
+//     Ps = 1 0 3 6  -> Don't send ESC  when Meta modifies a key.
+//     (This disables the metaSendsEscape resource).
+//     Ps = 1 0 3 7  -> Send VT220 Remove from the editing-keypad
+//     Delete key.
+//     Ps = 1 0 3 9  -> Don't send ESC  when Alt modifies a key.
+//     (This disables the altSendsEscape resource).
+//     Ps = 1 0 4 0  -> Do not keep selection when not highlighted.
+//     (This disables the keepSelection resource).
+//     Ps = 1 0 4 1  -> Use the PRIMARY selection.  (This disables
+//     the selectToClipboard resource).
+//     Ps = 1 0 4 2  -> Disable Urgency window manager hint when
+//     Control-G is received.  (This disables the bellIsUrgent
+//     resource).
+//     Ps = 1 0 4 3  -> Disable raising of the window when Control-
+//     G is received.  (This disables the popOnBell resource).
+//     Ps = 1 0 4 7  -> Use Normal Screen Buffer, clearing screen
+//     first if in the Alternate Screen.  (This may be disabled by
+//     the titeInhibit resource).
+//     Ps = 1 0 4 8  -> Restore cursor as in DECRC.  (This may be
+//     disabled by the titeInhibit resource).
+//     Ps = 1 0 4 9  -> Use Normal Screen Buffer and restore cursor
+//     as in DECRC.  (This may be disabled by the titeInhibit
+//     resource).  This combines the effects of the 1 0 4 7  and 1 0
+//     4 8  modes.  Use this with terminfo-based applications rather
+//     than the 4 7  mode.
+//     Ps = 1 0 5 0  -> Reset terminfo/termcap function-key mode.
+//     Ps = 1 0 5 1  -> Reset Sun function-key mode.
+//     Ps = 1 0 5 2  -> Reset HP function-key mode.
+//     Ps = 1 0 5 3  -> Reset SCO function-key mode.
+//     Ps = 1 0 6 0  -> Reset legacy keyboard emulation (X11R6).
+//     Ps = 1 0 6 1  -> Reset keyboard emulation to Sun/PC style.
+//     Ps = 2 0 0 4  -> Reset bracketed paste mode.
+Terminal.prototype.resetMode = function(params) {
+  if (typeof params === 'object') {
+    var l = params.length
+      , i = 0;
+
+    for (; i < l; i++) {
+      this.resetMode(params[i]);
+    }
+
+    return;
+  }
+
+  if (!this.prefix) {
+    switch (params) {
+      case 4:
+        this.insertMode = false;
+        break;
+      case 20:
+        //this.convertEol = false;
+        break;
+    }
+  } else if (this.prefix === '?') {
+    switch (params) {
+      case 1:
+        this.applicationCursor = false;
+        break;
+      case 3:
+        if (this.cols === 132 && this.savedCols) {
+          this.resize(this.savedCols, this.rows);
+        }
+        delete this.savedCols;
+        break;
+      case 6:
+        this.originMode = false;
+        break;
+      case 7:
+        this.wraparoundMode = false;
+        break;
+      case 12:
+        // this.cursorBlink = false;
+        break;
+      case 66:
+        this.log('Switching back to normal keypad.');
+        this.applicationKeypad = false;
+        break;
+      case 9: // X10 Mouse
+      case 1000: // vt200 mouse
+      case 1002: // button event mouse
+      case 1003: // any event mouse
+        this.x10Mouse = false;
+        this.vt200Mouse = false;
+        this.normalMouse = false;
+        this.mouseEvents = false;
+        this.element.style.cursor = '';
+        break;
+      case 1004: // send focusin/focusout events
+        this.sendFocus = false;
+        break;
+      case 1005: // utf8 ext mode mouse
+        this.utfMouse = false;
+        break;
+      case 1006: // sgr ext mode mouse
+        this.sgrMouse = false;
+        break;
+      case 1015: // urxvt ext mode mouse
+        this.urxvtMouse = false;
+        break;
+      case 25: // hide cursor
+        this.cursorHidden = true;
+        break;
+      case 1049: // alt screen buffer cursor
+        ; // FALL-THROUGH
+      case 47: // normal screen buffer
+      case 1047: // normal screen buffer - clearing it first
+        if (this.normal) {
+          this.lines = this.normal.lines;
+          this.ybase = this.normal.ybase;
+          this.ydisp = this.normal.ydisp;
+          this.x = this.normal.x;
+          this.y = this.normal.y;
+          this.scrollTop = this.normal.scrollTop;
+          this.scrollBottom = this.normal.scrollBottom;
+          this.tabs = this.normal.tabs;
+          this.normal = null;
+          // if (params === 1049) {
+          //   this.x = this.savedX;
+          //   this.y = this.savedY;
+          // }
+          this.refresh(0, this.rows - 1);
+          this.showCursor();
+        }
+        break;
+    }
+  }
+};
+
+// CSI Ps ; Ps r
+//   Set Scrolling Region [top;bottom] (default = full size of win-
+//   dow) (DECSTBM).
+// CSI ? Pm r
+Terminal.prototype.setScrollRegion = function(params) {
+  if (this.prefix) return;
+  this.scrollTop = (params[0] || 1) - 1;
+  this.scrollBottom = (params[1] || this.rows) - 1;
+  this.x = 0;
+  this.y = 0;
+};
+
+// CSI s
+//   Save cursor (ANSI.SYS).
+Terminal.prototype.saveCursor = function(params) {
+  this.savedX = this.x;
+  this.savedY = this.y;
+};
+
+// CSI u
+//   Restore cursor (ANSI.SYS).
+Terminal.prototype.restoreCursor = function(params) {
+  this.x = this.savedX || 0;
+  this.y = this.savedY || 0;
+};
+
+/**
+ * Lesser Used
+ */
+
+// CSI Ps I
+//   Cursor Forward Tabulation Ps tab stops (default = 1) (CHT).
+Terminal.prototype.cursorForwardTab = function(params) {
+  var param = params[0] || 1;
+  while (param--) {
+    this.x = this.nextStop();
+  }
+};
+
+// CSI Ps S  Scroll up Ps lines (default = 1) (SU).
+Terminal.prototype.scrollUp = function(params) {
+  var param = params[0] || 1;
+  while (param--) {
+    this.lines.splice(this.ybase + this.scrollTop, 1);
+    this.lines.splice(this.ybase + this.scrollBottom, 0, this.blankLine());
+  }
+  // this.maxRange();
+  this.updateRange(this.scrollTop);
+  this.updateRange(this.scrollBottom);
+};
+
+// CSI Ps T  Scroll down Ps lines (default = 1) (SD).
+Terminal.prototype.scrollDown = function(params) {
+  var param = params[0] || 1;
+  while (param--) {
+    this.lines.splice(this.ybase + this.scrollBottom, 1);
+    this.lines.splice(this.ybase + this.scrollTop, 0, this.blankLine());
+  }
+  // this.maxRange();
+  this.updateRange(this.scrollTop);
+  this.updateRange(this.scrollBottom);
+};
+
+// CSI Ps ; Ps ; Ps ; Ps ; Ps T
+//   Initiate highlight mouse tracking.  Parameters are
+//   [func;startx;starty;firstrow;lastrow].  See the section Mouse
+//   Tracking.
+Terminal.prototype.initMouseTracking = function(params) {
+  // Relevant: DECSET 1001
+};
+
+// CSI > Ps; Ps T
+//   Reset one or more features of the title modes to the default
+//   value.  Normally, "reset" disables the feature.  It is possi-
+//   ble to disable the ability to reset features by compiling a
+//   different default for the title modes into xterm.
+//     Ps = 0  -> Do not set window/icon labels using hexadecimal.
+//     Ps = 1  -> Do not query window/icon labels using hexadeci-
+//     mal.
+//     Ps = 2  -> Do not set window/icon labels using UTF-8.
+//     Ps = 3  -> Do not query window/icon labels using UTF-8.
+//   (See discussion of "Title Modes").
+Terminal.prototype.resetTitleModes = function(params) {
+  ;
+};
+
+// CSI Ps Z  Cursor Backward Tabulation Ps tab stops (default = 1) (CBT).
+Terminal.prototype.cursorBackwardTab = function(params) {
+  var param = params[0] || 1;
+  while (param--) {
+    this.x = this.prevStop();
+  }
+};
+
+// CSI Ps b  Repeat the preceding graphic character Ps times (REP).
+Terminal.prototype.repeatPrecedingCharacter = function(params) {
+  var param = params[0] || 1
+    , line = this.lines[this.ybase + this.y]
+    , ch = line[this.x - 1] || [this.defAttr, ' '];
+
+  while (param--) line[this.x++] = ch;
+};
+
+// CSI Ps g  Tab Clear (TBC).
+//     Ps = 0  -> Clear Current Column (default).
+//     Ps = 3  -> Clear All.
+// Potentially:
+//   Ps = 2  -> Clear Stops on Line.
+//   http://vt100.net/annarbor/aaa-ug/section6.html
+Terminal.prototype.tabClear = function(params) {
+  var param = params[0];
+  if (param <= 0) {
+    delete this.tabs[this.x];
+  } else if (param === 3) {
+    this.tabs = {};
+  }
+};
+
+// CSI Pm i  Media Copy (MC).
+//     Ps = 0  -> Print screen (default).
+//     Ps = 4  -> Turn off printer controller mode.
+//     Ps = 5  -> Turn on printer controller mode.
+// CSI ? Pm i
+//   Media Copy (MC, DEC-specific).
+//     Ps = 1  -> Print line containing cursor.
+//     Ps = 4  -> Turn off autoprint mode.
+//     Ps = 5  -> Turn on autoprint mode.
+//     Ps = 1  0  -> Print composed display, ignores DECPEX.
+//     Ps = 1  1  -> Print all pages.
+Terminal.prototype.mediaCopy = function(params) {
+  ;
+};
+
+// CSI > Ps; Ps m
+//   Set or reset resource-values used by xterm to decide whether
+//   to construct escape sequences holding information about the
+//   modifiers pressed with a given key.  The first parameter iden-
+//   tifies the resource to set/reset.  The second parameter is the
+//   value to assign to the resource.  If the second parameter is
+//   omitted, the resource is reset to its initial value.
+//     Ps = 1  -> modifyCursorKeys.
+//     Ps = 2  -> modifyFunctionKeys.
+//     Ps = 4  -> modifyOtherKeys.
+//   If no parameters are given, all resources are reset to their
+//   initial values.
+Terminal.prototype.setResources = function(params) {
+  ;
+};
+
+// CSI > Ps n
+//   Disable modifiers which may be enabled via the CSI > Ps; Ps m
+//   sequence.  This corresponds to a resource value of "-1", which
+//   cannot be set with the other sequence.  The parameter identi-
+//   fies the resource to be disabled:
+//     Ps = 1  -> modifyCursorKeys.
+//     Ps = 2  -> modifyFunctionKeys.
+//     Ps = 4  -> modifyOtherKeys.
+//   If the parameter is omitted, modifyFunctionKeys is disabled.
+//   When modifyFunctionKeys is disabled, xterm uses the modifier
+//   keys to make an extended sequence of functions rather than
+//   adding a parameter to each function key to denote the modi-
+//   fiers.
+Terminal.prototype.disableModifiers = function(params) {
+  ;
+};
+
+// CSI > Ps p
+//   Set resource value pointerMode.  This is used by xterm to
+//   decide whether to hide the pointer cursor as the user types.
+//   Valid values for the parameter:
+//     Ps = 0  -> never hide the pointer.
+//     Ps = 1  -> hide if the mouse tracking mode is not enabled.
+//     Ps = 2  -> always hide the pointer.  If no parameter is
+//     given, xterm uses the default, which is 1 .
+Terminal.prototype.setPointerMode = function(params) {
+  ;
+};
+
+// CSI ! p   Soft terminal reset (DECSTR).
+// http://vt100.net/docs/vt220-rm/table4-10.html
+Terminal.prototype.softReset = function(params) {
+  this.cursorHidden = false;
+  this.insertMode = false;
+  this.originMode = false;
+  this.wraparoundMode = false; // autowrap
+  this.applicationKeypad = false; // ?
+  this.applicationCursor = false;
+  this.scrollTop = 0;
+  this.scrollBottom = this.rows - 1;
+  this.curAttr = this.defAttr;
+  this.x = this.y = 0; // ?
+  this.charset = null;
+  this.glevel = 0; // ??
+  this.charsets = [null]; // ??
+};
+
+// CSI Ps$ p
+//   Request ANSI mode (DECRQM).  For VT300 and up, reply is
+//     CSI Ps; Pm$ y
+//   where Ps is the mode number as in RM, and Pm is the mode
+//   value:
+//     0 - not recognized
+//     1 - set
+//     2 - reset
+//     3 - permanently set
+//     4 - permanently reset
+Terminal.prototype.requestAnsiMode = function(params) {
+  ;
+};
+
+// CSI ? Ps$ p
+//   Request DEC private mode (DECRQM).  For VT300 and up, reply is
+//     CSI ? Ps; Pm$ p
+//   where Ps is the mode number as in DECSET, Pm is the mode value
+//   as in the ANSI DECRQM.
+Terminal.prototype.requestPrivateMode = function(params) {
+  ;
+};
+
+// CSI Ps ; Ps " p
+//   Set conformance level (DECSCL).  Valid values for the first
+//   parameter:
+//     Ps = 6 1  -> VT100.
+//     Ps = 6 2  -> VT200.
+//     Ps = 6 3  -> VT300.
+//   Valid values for the second parameter:
+//     Ps = 0  -> 8-bit controls.
+//     Ps = 1  -> 7-bit controls (always set for VT100).
+//     Ps = 2  -> 8-bit controls.
+Terminal.prototype.setConformanceLevel = function(params) {
+  ;
+};
+
+// CSI Ps q  Load LEDs (DECLL).
+//     Ps = 0  -> Clear all LEDS (default).
+//     Ps = 1  -> Light Num Lock.
+//     Ps = 2  -> Light Caps Lock.
+//     Ps = 3  -> Light Scroll Lock.
+//     Ps = 2  1  -> Extinguish Num Lock.
+//     Ps = 2  2  -> Extinguish Caps Lock.
+//     Ps = 2  3  -> Extinguish Scroll Lock.
+Terminal.prototype.loadLEDs = function(params) {
+  ;
+};
+
+// CSI Ps SP q
+//   Set cursor style (DECSCUSR, VT520).
+//     Ps = 0  -> blinking block.
+//     Ps = 1  -> blinking block (default).
+//     Ps = 2  -> steady block.
+//     Ps = 3  -> blinking underline.
+//     Ps = 4  -> steady underline.
+Terminal.prototype.setCursorStyle = function(params) {
+  ;
+};
+
+// CSI Ps " q
+//   Select character protection attribute (DECSCA).  Valid values
+//   for the parameter:
+//     Ps = 0  -> DECSED and DECSEL can erase (default).
+//     Ps = 1  -> DECSED and DECSEL cannot erase.
+//     Ps = 2  -> DECSED and DECSEL can erase.
+Terminal.prototype.setCharProtectionAttr = function(params) {
+  ;
+};
+
+// CSI ? Pm r
+//   Restore DEC Private Mode Values.  The value of Ps previously
+//   saved is restored.  Ps values are the same as for DECSET.
+Terminal.prototype.restorePrivateValues = function(params) {
+  ;
+};
+
+// CSI Pt; Pl; Pb; Pr; Ps$ r
+//   Change Attributes in Rectangular Area (DECCARA), VT400 and up.
+//     Pt; Pl; Pb; Pr denotes the rectangle.
+//     Ps denotes the SGR attributes to change: 0, 1, 4, 5, 7.
+// NOTE: xterm doesn't enable this code by default.
+Terminal.prototype.setAttrInRectangle = function(params) {
+  var t = params[0]
+    , l = params[1]
+    , b = params[2]
+    , r = params[3]
+    , attr = params[4];
+
+  var line
+    , i;
+
+  for (; t < b + 1; t++) {
+    line = this.lines[this.ybase + t];
+    for (i = l; i < r; i++) {
+      line[i] = [attr, line[i][1]];
+    }
+  }
+
+  // this.maxRange();
+  this.updateRange(params[0]);
+  this.updateRange(params[2]);
+};
+
+// CSI ? Pm s
+//   Save DEC Private Mode Values.  Ps values are the same as for
+//   DECSET.
+Terminal.prototype.savePrivateValues = function(params) {
+  ;
+};
+
+// CSI Ps ; Ps ; Ps t
+//   Window manipulation (from dtterm, as well as extensions).
+//   These controls may be disabled using the allowWindowOps
+//   resource.  Valid values for the first (and any additional
+//   parameters) are:
+//     Ps = 1  -> De-iconify window.
+//     Ps = 2  -> Iconify window.
+//     Ps = 3  ;  x ;  y -> Move window to [x, y].
+//     Ps = 4  ;  height ;  width -> Resize the xterm window to
+//     height and width in pixels.
+//     Ps = 5  -> Raise the xterm window to the front of the stack-
+//     ing order.
+//     Ps = 6  -> Lower the xterm window to the bottom of the
+//     stacking order.
+//     Ps = 7  -> Refresh the xterm window.
+//     Ps = 8  ;  height ;  width -> Resize the text area to
+//     [height;width] in characters.
+//     Ps = 9  ;  0  -> Restore maximized window.
+//     Ps = 9  ;  1  -> Maximize window (i.e., resize to screen
+//     size).
+//     Ps = 1 0  ;  0  -> Undo full-screen mode.
+//     Ps = 1 0  ;  1  -> Change to full-screen.
+//     Ps = 1 1  -> Report xterm window state.  If the xterm window
+//     is open (non-iconified), it returns CSI 1 t .  If the xterm
+//     window is iconified, it returns CSI 2 t .
+//     Ps = 1 3  -> Report xterm window position.  Result is CSI 3
+//     ; x ; y t
+//     Ps = 1 4  -> Report xterm window in pixels.  Result is CSI
+//     4  ;  height ;  width t
+//     Ps = 1 8  -> Report the size of the text area in characters.
+//     Result is CSI  8  ;  height ;  width t
+//     Ps = 1 9  -> Report the size of the screen in characters.
+//     Result is CSI  9  ;  height ;  width t
+//     Ps = 2 0  -> Report xterm window's icon label.  Result is
+//     OSC  L  label ST
+//     Ps = 2 1  -> Report xterm window's title.  Result is OSC  l
+//     label ST
+//     Ps = 2 2  ;  0  -> Save xterm icon and window title on
+//     stack.
+//     Ps = 2 2  ;  1  -> Save xterm icon title on stack.
+//     Ps = 2 2  ;  2  -> Save xterm window title on stack.
+//     Ps = 2 3  ;  0  -> Restore xterm icon and window title from
+//     stack.
+//     Ps = 2 3  ;  1  -> Restore xterm icon title from stack.
+//     Ps = 2 3  ;  2  -> Restore xterm window title from stack.
+//     Ps >= 2 4  -> Resize to Ps lines (DECSLPP).
+Terminal.prototype.manipulateWindow = function(params) {
+  ;
+};
+
+// CSI Pt; Pl; Pb; Pr; Ps$ t
+//   Reverse Attributes in Rectangular Area (DECRARA), VT400 and
+//   up.
+//     Pt; Pl; Pb; Pr denotes the rectangle.
+//     Ps denotes the attributes to reverse, i.e.,  1, 4, 5, 7.
+// NOTE: xterm doesn't enable this code by default.
+Terminal.prototype.reverseAttrInRectangle = function(params) {
+  ;
+};
+
+// CSI > Ps; Ps t
+//   Set one or more features of the title modes.  Each parameter
+//   enables a single feature.
+//     Ps = 0  -> Set window/icon labels using hexadecimal.
+//     Ps = 1  -> Query window/icon labels using hexadecimal.
+//     Ps = 2  -> Set window/icon labels using UTF-8.
+//     Ps = 3  -> Query window/icon labels using UTF-8.  (See dis-
+//     cussion of "Title Modes")
+Terminal.prototype.setTitleModeFeature = function(params) {
+  ;
+};
+
+// CSI Ps SP t
+//   Set warning-bell volume (DECSWBV, VT520).
+//     Ps = 0  or 1  -> off.
+//     Ps = 2 , 3  or 4  -> low.
+//     Ps = 5 , 6 , 7 , or 8  -> high.
+Terminal.prototype.setWarningBellVolume = function(params) {
+  ;
+};
+
+// CSI Ps SP u
+//   Set margin-bell volume (DECSMBV, VT520).
+//     Ps = 1  -> off.
+//     Ps = 2 , 3  or 4  -> low.
+//     Ps = 0 , 5 , 6 , 7 , or 8  -> high.
+Terminal.prototype.setMarginBellVolume = function(params) {
+  ;
+};
+
+// CSI Pt; Pl; Pb; Pr; Pp; Pt; Pl; Pp$ v
+//   Copy Rectangular Area (DECCRA, VT400 and up).
+//     Pt; Pl; Pb; Pr denotes the rectangle.
+//     Pp denotes the source page.
+//     Pt; Pl denotes the target location.
+//     Pp denotes the target page.
+// NOTE: xterm doesn't enable this code by default.
+Terminal.prototype.copyRectangle = function(params) {
+  ;
+};
+
+// CSI Pt ; Pl ; Pb ; Pr ' w
+//   Enable Filter Rectangle (DECEFR), VT420 and up.
+//   Parameters are [top;left;bottom;right].
+//   Defines the coordinates of a filter rectangle and activates
+//   it.  Anytime the locator is detected outside of the filter
+//   rectangle, an outside rectangle event is generated and the
+//   rectangle is disabled.  Filter rectangles are always treated
+//   as "one-shot" events.  Any parameters that are omitted default
+//   to the current locator position.  If all parameters are omit-
+//   ted, any locator motion will be reported.  DECELR always can-
+//   cels any prevous rectangle definition.
+Terminal.prototype.enableFilterRectangle = function(params) {
+  ;
+};
+
+// CSI Ps x  Request Terminal Parameters (DECREQTPARM).
+//   if Ps is a "0" (default) or "1", and xterm is emulating VT100,
+//   the control sequence elicits a response of the same form whose
+//   parameters describe the terminal:
+//     Ps -> the given Ps incremented by 2.
+//     Pn = 1  <- no parity.
+//     Pn = 1  <- eight bits.
+//     Pn = 1  <- 2  8  transmit 38.4k baud.
+//     Pn = 1  <- 2  8  receive 38.4k baud.
+//     Pn = 1  <- clock multiplier.
+//     Pn = 0  <- STP flags.
+Terminal.prototype.requestParameters = function(params) {
+  ;
+};
+
+// CSI Ps x  Select Attribute Change Extent (DECSACE).
+//     Ps = 0  -> from start to end position, wrapped.
+//     Ps = 1  -> from start to end position, wrapped.
+//     Ps = 2  -> rectangle (exact).
+Terminal.prototype.selectChangeExtent = function(params) {
+  ;
+};
+
+// CSI Pc; Pt; Pl; Pb; Pr$ x
+//   Fill Rectangular Area (DECFRA), VT420 and up.
+//     Pc is the character to use.
+//     Pt; Pl; Pb; Pr denotes the rectangle.
+// NOTE: xterm doesn't enable this code by default.
+Terminal.prototype.fillRectangle = function(params) {
+  var ch = params[0]
+    , t = params[1]
+    , l = params[2]
+    , b = params[3]
+    , r = params[4];
+
+  var line
+    , i;
+
+  for (; t < b + 1; t++) {
+    line = this.lines[this.ybase + t];
+    for (i = l; i < r; i++) {
+      line[i] = [line[i][0], String.fromCharCode(ch)];
+    }
+  }
+
+  // this.maxRange();
+  this.updateRange(params[1]);
+  this.updateRange(params[3]);
+};
+
+// CSI Ps ; Pu ' z
+//   Enable Locator Reporting (DECELR).
+//   Valid values for the first parameter:
+//     Ps = 0  -> Locator disabled (default).
+//     Ps = 1  -> Locator enabled.
+//     Ps = 2  -> Locator enabled for one report, then disabled.
+//   The second parameter specifies the coordinate unit for locator
+//   reports.
+//   Valid values for the second parameter:
+//     Pu = 0  <- or omitted -> default to character cells.
+//     Pu = 1  <- device physical pixels.
+//     Pu = 2  <- character cells.
+Terminal.prototype.enableLocatorReporting = function(params) {
+  var val = params[0] > 0;
+  //this.mouseEvents = val;
+  //this.decLocator = val;
+};
+
+// CSI Pt; Pl; Pb; Pr$ z
+//   Erase Rectangular Area (DECERA), VT400 and up.
+//     Pt; Pl; Pb; Pr denotes the rectangle.
+// NOTE: xterm doesn't enable this code by default.
+Terminal.prototype.eraseRectangle = function(params) {
+  var t = params[0]
+    , l = params[1]
+    , b = params[2]
+    , r = params[3];
+
+  var line
+    , i
+    , ch;
+
+  ch = [this.eraseAttr(), ' ']; // xterm?
+
+  for (; t < b + 1; t++) {
+    line = this.lines[this.ybase + t];
+    for (i = l; i < r; i++) {
+      line[i] = ch;
+    }
+  }
+
+  // this.maxRange();
+  this.updateRange(params[0]);
+  this.updateRange(params[2]);
+};
+
+// CSI Pm ' {
+//   Select Locator Events (DECSLE).
+//   Valid values for the first (and any additional parameters)
+//   are:
+//     Ps = 0  -> only respond to explicit host requests (DECRQLP).
+//                (This is default).  It also cancels any filter
+//   rectangle.
+//     Ps = 1  -> report button down transitions.
+//     Ps = 2  -> do not report button down transitions.
+//     Ps = 3  -> report button up transitions.
+//     Ps = 4  -> do not report button up transitions.
+Terminal.prototype.setLocatorEvents = function(params) {
+  ;
+};
+
+// CSI Pt; Pl; Pb; Pr$ {
+//   Selective Erase Rectangular Area (DECSERA), VT400 and up.
+//     Pt; Pl; Pb; Pr denotes the rectangle.
+Terminal.prototype.selectiveEraseRectangle = function(params) {
+  ;
+};
+
+// CSI Ps ' |
+//   Request Locator Position (DECRQLP).
+//   Valid values for the parameter are:
+//     Ps = 0 , 1 or omitted -> transmit a single DECLRP locator
+//     report.
+
+//   If Locator Reporting has been enabled by a DECELR, xterm will
+//   respond with a DECLRP Locator Report.  This report is also
+//   generated on button up and down events if they have been
+//   enabled with a DECSLE, or when the locator is detected outside
+//   of a filter rectangle, if filter rectangles have been enabled
+//   with a DECEFR.
+
+//     -> CSI Pe ; Pb ; Pr ; Pc ; Pp &  w
+
+//   Parameters are [event;button;row;column;page].
+//   Valid values for the event:
+//     Pe = 0  -> locator unavailable - no other parameters sent.
+//     Pe = 1  -> request - xterm received a DECRQLP.
+//     Pe = 2  -> left button down.
+//     Pe = 3  -> left button up.
+//     Pe = 4  -> middle button down.
+//     Pe = 5  -> middle button up.
+//     Pe = 6  -> right button down.
+//     Pe = 7  -> right button up.
+//     Pe = 8  -> M4 button down.
+//     Pe = 9  -> M4 button up.
+//     Pe = 1 0  -> locator outside filter rectangle.
+//   ``button'' parameter is a bitmask indicating which buttons are
+//     pressed:
+//     Pb = 0  <- no buttons down.
+//     Pb & 1  <- right button down.
+//     Pb & 2  <- middle button down.
+//     Pb & 4  <- left button down.
+//     Pb & 8  <- M4 button down.
+//   ``row'' and ``column'' parameters are the coordinates of the
+//     locator position in the xterm window, encoded as ASCII deci-
+//     mal.
+//   The ``page'' parameter is not used by xterm, and will be omit-
+//   ted.
+Terminal.prototype.requestLocatorPosition = function(params) {
+  ;
+};
+
+// CSI P m SP }
+// Insert P s Column(s) (default = 1) (DECIC), VT420 and up.
+// NOTE: xterm doesn't enable this code by default.
+Terminal.prototype.insertColumns = function() {
+  var param = params[0]
+    , l = this.ybase + this.rows
+    , ch = [this.eraseAttr(), ' '] // xterm?
+    , i;
+
+  while (param--) {
+    for (i = this.ybase; i < l; i++) {
+      this.lines[i].splice(this.x + 1, 0, ch);
+      this.lines[i].pop();
+    }
+  }
+
+  this.maxRange();
+};
+
+// CSI P m SP ~
+// Delete P s Column(s) (default = 1) (DECDC), VT420 and up
+// NOTE: xterm doesn't enable this code by default.
+Terminal.prototype.deleteColumns = function() {
+  var param = params[0]
+    , l = this.ybase + this.rows
+    , ch = [this.eraseAttr(), ' '] // xterm?
+    , i;
+
+  while (param--) {
+    for (i = this.ybase; i < l; i++) {
+      this.lines[i].splice(this.x, 1);
+      this.lines[i].push(ch);
+    }
+  }
+
+  this.maxRange();
+};
+
+/**
+ * Prefix/Select/Visual/Search Modes
+ */
+
+Terminal.prototype.enterPrefix = function() {
+  this.prefixMode = true;
+};
+
+Terminal.prototype.leavePrefix = function() {
+  this.prefixMode = false;
+};
+
+Terminal.prototype.enterSelect = function() {
+  this._real = {
+    x: this.x,
+    y: this.y,
+    ydisp: this.ydisp,
+    ybase: this.ybase,
+    cursorHidden: this.cursorHidden,
+    lines: this.copyBuffer(this.lines),
+    write: this.write
+  };
+  this.write = function() {};
+  this.selectMode = true;
+  this.visualMode = false;
+  this.cursorHidden = false;
+  this.refresh(this.y, this.y);
+};
+
+Terminal.prototype.leaveSelect = function() {
+  this.x = this._real.x;
+  this.y = this._real.y;
+  this.ydisp = this._real.ydisp;
+  this.ybase = this._real.ybase;
+  this.cursorHidden = this._real.cursorHidden;
+  this.lines = this._real.lines;
+  this.write = this._real.write;
+  delete this._real;
+  this.selectMode = false;
+  this.visualMode = false;
+  this.refresh(0, this.rows - 1);
+};
+
+Terminal.prototype.enterVisual = function() {
+  this._real.preVisual = this.copyBuffer(this.lines);
+  this.selectText(this.x, this.x, this.ydisp + this.y, this.ydisp + this.y);
+  this.visualMode = true;
+};
+
+Terminal.prototype.leaveVisual = function() {
+  this.lines = this._real.preVisual;
+  delete this._real.preVisual;
+  delete this._selected;
+  this.visualMode = false;
+  this.refresh(0, this.rows - 1);
+};
+
+Terminal.prototype.enterSearch = function(down) {
+  this.entry = '';
+  this.searchMode = true;
+  this.searchDown = down;
+  this._real.preSearch = this.copyBuffer(this.lines);
+  this._real.preSearchX = this.x;
+  this._real.preSearchY = this.y;
+
+  var bottom = this.ydisp + this.rows - 1;
+  for (var i = 0; i < this.entryPrefix.length; i++) {
+    //this.lines[bottom][i][0] = (this.defAttr & ~0x1ff) | 4;
+    //this.lines[bottom][i][1] = this.entryPrefix[i];
+    this.lines[bottom][i] = [
+      (this.defAttr & ~0x1ff) | 4,
+      this.entryPrefix[i]
+    ];
+  }
+
+  this.y = this.rows - 1;
+  this.x = this.entryPrefix.length;
+
+  this.refresh(this.rows - 1, this.rows - 1);
+};
+
+Terminal.prototype.leaveSearch = function() {
+  this.searchMode = false;
+
+  if (this._real.preSearch) {
+    this.lines = this._real.preSearch;
+    this.x = this._real.preSearchX;
+    this.y = this._real.preSearchY;
+    delete this._real.preSearch;
+    delete this._real.preSearchX;
+    delete this._real.preSearchY;
+  }
+
+  this.refresh(this.rows - 1, this.rows - 1);
+};
+
+Terminal.prototype.copyBuffer = function(lines) {
+  var lines = lines || this.lines
+    , out = [];
+
+  for (var y = 0; y < lines.length; y++) {
+    out[y] = [];
+    for (var x = 0; x < lines[y].length; x++) {
+      out[y][x] = [lines[y][x][0], lines[y][x][1]];
+    }
+  }
+
+  return out;
+};
+
+Terminal.prototype.getCopyTextarea = function(text) {
+  var textarea = this._copyTextarea
+    , document = this.document;
+
+  if (!textarea) {
+    textarea = document.createElement('textarea');
+    textarea.style.position = 'absolute';
+    textarea.style.left = '-32000px';
+    textarea.style.top = '-32000px';
+    textarea.style.width = '0px';
+    textarea.style.height = '0px';
+    textarea.style.opacity = '0';
+    textarea.style.backgroundColor = 'transparent';
+    textarea.style.borderStyle = 'none';
+    textarea.style.outlineStyle = 'none';
+
+    document.getElementsByTagName('body')[0].appendChild(textarea);
+
+    this._copyTextarea = textarea;
+  }
+
+  return textarea;
+};
+
+// NOTE: Only works for primary selection on X11.
+// Non-X11 users should use Ctrl-C instead.
+Terminal.prototype.copyText = function(text) {
+  var self = this
+    , textarea = this.getCopyTextarea();
+
+  this.emit('copy', text);
+
+  textarea.focus();
+  textarea.textContent = text;
+  textarea.value = text;
+  textarea.setSelectionRange(0, text.length);
+
+  setTimeout(function() {
+    self.element.focus();
+    self.focus();
+  }, 1);
+};
+
+Terminal.prototype.selectText = function(x1, x2, y1, y2) {
+  var ox1
+    , ox2
+    , oy1
+    , oy2
+    , tmp
+    , x
+    , y
+    , xl
+    , attr;
+
+  if (this._selected) {
+    ox1 = this._selected.x1;
+    ox2 = this._selected.x2;
+    oy1 = this._selected.y1;
+    oy2 = this._selected.y2;
+
+    if (oy2 < oy1) {
+      tmp = ox2;
+      ox2 = ox1;
+      ox1 = tmp;
+      tmp = oy2;
+      oy2 = oy1;
+      oy1 = tmp;
+    }
+
+    if (ox2 < ox1 && oy1 === oy2) {
+      tmp = ox2;
+      ox2 = ox1;
+      ox1 = tmp;
+    }
+
+    for (y = oy1; y <= oy2; y++) {
+      x = 0;
+      xl = this.cols - 1;
+      if (y === oy1) {
+        x = ox1;
+      }
+      if (y === oy2) {
+        xl = ox2;
+      }
+      for (; x <= xl; x++) {
+        if (this.lines[y][x].old != null) {
+          //this.lines[y][x][0] = this.lines[y][x].old;
+          //delete this.lines[y][x].old;
+          attr = this.lines[y][x].old;
+          delete this.lines[y][x].old;
+          this.lines[y][x] = [attr, this.lines[y][x][1]];
+        }
+      }
+    }
+
+    y1 = this._selected.y1;
+    x1 = this._selected.x1;
+  }
+
+  y1 = Math.max(y1, 0);
+  y1 = Math.min(y1, this.ydisp + this.rows - 1);
+
+  y2 = Math.max(y2, 0);
+  y2 = Math.min(y2, this.ydisp + this.rows - 1);
+
+  this._selected = { x1: x1, x2: x2, y1: y1, y2: y2 };
+
+  if (y2 < y1) {
+    tmp = x2;
+    x2 = x1;
+    x1 = tmp;
+    tmp = y2;
+    y2 = y1;
+    y1 = tmp;
+  }
+
+  if (x2 < x1 && y1 === y2) {
+    tmp = x2;
+    x2 = x1;
+    x1 = tmp;
+  }
+
+  for (y = y1; y <= y2; y++) {
+    x = 0;
+    xl = this.cols - 1;
+    if (y === y1) {
+      x = x1;
+    }
+    if (y === y2) {
+      xl = x2;
+    }
+    for (; x <= xl; x++) {
+      //this.lines[y][x].old = this.lines[y][x][0];
+      //this.lines[y][x][0] &= ~0x1ff;
+      //this.lines[y][x][0] |= (0x1ff << 9) | 4;
+      attr = this.lines[y][x][0];
+      this.lines[y][x] = [
+        (attr & ~0x1ff) | ((0x1ff << 9) | 4),
+        this.lines[y][x][1]
+      ];
+      this.lines[y][x].old = attr;
+    }
+  }
+
+  y1 = y1 - this.ydisp;
+  y2 = y2 - this.ydisp;
+
+  y1 = Math.max(y1, 0);
+  y1 = Math.min(y1, this.rows - 1);
+
+  y2 = Math.max(y2, 0);
+  y2 = Math.min(y2, this.rows - 1);
+
+  //this.refresh(y1, y2);
+  this.refresh(0, this.rows - 1);
+};
+
+Terminal.prototype.grabText = function(x1, x2, y1, y2) {
+  var out = ''
+    , buf = ''
+    , ch
+    , x
+    , y
+    , xl
+    , tmp;
+
+  if (y2 < y1) {
+    tmp = x2;
+    x2 = x1;
+    x1 = tmp;
+    tmp = y2;
+    y2 = y1;
+    y1 = tmp;
+  }
+
+  if (x2 < x1 && y1 === y2) {
+    tmp = x2;
+    x2 = x1;
+    x1 = tmp;
+  }
+
+  for (y = y1; y <= y2; y++) {
+    x = 0;
+    xl = this.cols - 1;
+    if (y === y1) {
+      x = x1;
+    }
+    if (y === y2) {
+      xl = x2;
+    }
+    for (; x <= xl; x++) {
+      ch = this.lines[y][x][1];
+      if (ch === ' ') {
+        buf += ch;
+        continue;
+      }
+      if (buf) {
+        out += buf;
+        buf = '';
+      }
+      out += ch;
+      if (isWide(ch)) x++;
+    }
+    buf = '';
+    out += '\n';
+  }
+
+  // If we're not at the end of the
+  // line, don't add a newline.
+  for (x = x2, y = y2; x < this.cols; x++) {
+    if (this.lines[y][x][1] !== ' ') {
+      out = out.slice(0, -1);
+      break;
+    }
+  }
+
+  return out;
+};
+
+Terminal.prototype.keyPrefix = function(ev, key) {
+  if (key === 'k' || key === '&') {
+    this.destroy();
+  } else if (key === 'p' || key === ']') {
+    this.emit('request paste');
+  } else if (key === 'c') {
+    this.emit('request create');
+  } else if (key >= '0' && key <= '9') {
+    key = +key - 1;
+    if (!~key) key = 9;
+    this.emit('request term', key);
+  } else if (key === 'n') {
+    this.emit('request term next');
+  } else if (key === 'P') {
+    this.emit('request term previous');
+  } else if (key === ':') {
+    this.emit('request command mode');
+  } else if (key === '[') {
+    this.enterSelect();
+  }
+};
+
+Terminal.prototype.keySelect = function(ev, key) {
+  this.showCursor();
+
+  if (this.searchMode || key === 'n' || key === 'N') {
+    return this.keySearch(ev, key);
+  }
+
+  if (key === '\x04') { // ctrl-d
+    var y = this.ydisp + this.y;
+    if (this.ydisp === this.ybase) {
+      // Mimic vim behavior
+      this.y = Math.min(this.y + (this.rows - 1) / 2 | 0, this.rows - 1);
+      this.refresh(0, this.rows - 1);
+    } else {
+      this.scrollDisp((this.rows - 1) / 2 | 0);
+    }
+    if (this.visualMode) {
+      this.selectText(this.x, this.x, y, this.ydisp + this.y);
+    }
+    return;
+  }
+
+  if (key === '\x15') { // ctrl-u
+    var y = this.ydisp + this.y;
+    if (this.ydisp === 0) {
+      // Mimic vim behavior
+      this.y = Math.max(this.y - (this.rows - 1) / 2 | 0, 0);
+      this.refresh(0, this.rows - 1);
+    } else {
+      this.scrollDisp(-(this.rows - 1) / 2 | 0);
+    }
+    if (this.visualMode) {
+      this.selectText(this.x, this.x, y, this.ydisp + this.y);
+    }
+    return;
+  }
+
+  if (key === '\x06') { // ctrl-f
+    var y = this.ydisp + this.y;
+    this.scrollDisp(this.rows - 1);
+    if (this.visualMode) {
+      this.selectText(this.x, this.x, y, this.ydisp + this.y);
+    }
+    return;
+  }
+
+  if (key === '\x02') { // ctrl-b
+    var y = this.ydisp + this.y;
+    this.scrollDisp(-(this.rows - 1));
+    if (this.visualMode) {
+      this.selectText(this.x, this.x, y, this.ydisp + this.y);
+    }
+    return;
+  }
+
+  if (key === 'k' || key === '\x1b[A') {
+    var y = this.ydisp + this.y;
+    this.y--;
+    if (this.y < 0) {
+      this.y = 0;
+      this.scrollDisp(-1);
+    }
+    if (this.visualMode) {
+      this.selectText(this.x, this.x, y, this.ydisp + this.y);
+    } else {
+      this.refresh(this.y, this.y + 1);
+    }
+    return;
+  }
+
+  if (key === 'j' || key === '\x1b[B') {
+    var y = this.ydisp + this.y;
+    this.y++;
+    if (this.y >= this.rows) {
+      this.y = this.rows - 1;
+      this.scrollDisp(1);
+    }
+    if (this.visualMode) {
+      this.selectText(this.x, this.x, y, this.ydisp + this.y);
+    } else {
+      this.refresh(this.y - 1, this.y);
+    }
+    return;
+  }
+
+  if (key === 'h' || key === '\x1b[D') {
+    var x = this.x;
+    this.x--;
+    if (this.x < 0) {
+      this.x = 0;
+    }
+    if (this.visualMode) {
+      this.selectText(x, this.x, this.ydisp + this.y, this.ydisp + this.y);
+    } else {
+      this.refresh(this.y, this.y);
+    }
+    return;
+  }
+
+  if (key === 'l' || key === '\x1b[C') {
+    var x = this.x;
+    this.x++;
+    if (this.x >= this.cols) {
+      this.x = this.cols - 1;
+    }
+    if (this.visualMode) {
+      this.selectText(x, this.x, this.ydisp + this.y, this.ydisp + this.y);
+    } else {
+      this.refresh(this.y, this.y);
+    }
+    return;
+  }
+
+  if (key === 'v' || key === ' ') {
+    if (!this.visualMode) {
+      this.enterVisual();
+    } else {
+      this.leaveVisual();
+    }
+    return;
+  }
+
+  if (key === 'y') {
+    if (this.visualMode) {
+      var text = this.grabText(
+        this._selected.x1, this._selected.x2,
+        this._selected.y1, this._selected.y2);
+      this.copyText(text);
+      this.leaveVisual();
+      // this.leaveSelect();
+    }
+    return;
+  }
+
+  if (key === 'q' || key === '\x1b') {
+    if (this.visualMode) {
+      this.leaveVisual();
+    } else {
+      this.leaveSelect();
+    }
+    return;
+  }
+
+  if (key === 'w' || key === 'W') {
+    var ox = this.x;
+    var oy = this.y;
+    var oyd = this.ydisp;
+
+    var x = this.x;
+    var y = this.y;
+    var yb = this.ydisp;
+    var saw_space = false;
+
+    for (;;) {
+      var line = this.lines[yb + y];
+      while (x < this.cols) {
+        if (line[x][1] <= ' ') {
+          saw_space = true;
+        } else if (saw_space) {
+          break;
+        }
+        x++;
+      }
+      if (x >= this.cols) x = this.cols - 1;
+      if (x === this.cols - 1 && line[x][1] <= ' ') {
+        x = 0;
+        if (++y >= this.rows) {
+          y--;
+          if (++yb > this.ybase) {
+            yb = this.ybase;
+            x = this.x;
+            break;
+          }
+        }
+        continue;
+      }
+      break;
+    }
+
+    this.x = x, this.y = y;
+    this.scrollDisp(-this.ydisp + yb);
+
+    if (this.visualMode) {
+      this.selectText(ox, this.x, oy + oyd, this.ydisp + this.y);
+    }
+    return;
+  }
+
+  if (key === 'b' || key === 'B') {
+    var ox = this.x;
+    var oy = this.y;
+    var oyd = this.ydisp;
+
+    var x = this.x;
+    var y = this.y;
+    var yb = this.ydisp;
+
+    for (;;) {
+      var line = this.lines[yb + y];
+      var saw_space = x > 0 && line[x][1] > ' ' && line[x - 1][1] > ' ';
+      while (x >= 0) {
+        if (line[x][1] <= ' ') {
+          if (saw_space && (x + 1 < this.cols && line[x + 1][1] > ' ')) {
+            x++;
+            break;
+          } else {
+            saw_space = true;
+          }
+        }
+        x--;
+      }
+      if (x < 0) x = 0;
+      if (x === 0 && (line[x][1] <= ' ' || !saw_space)) {
+        x = this.cols - 1;
+        if (--y < 0) {
+          y++;
+          if (--yb < 0) {
+            yb++;
+            x = 0;
+            break;
+          }
+        }
+        continue;
+      }
+      break;
+    }
+
+    this.x = x, this.y = y;
+    this.scrollDisp(-this.ydisp + yb);
+
+    if (this.visualMode) {
+      this.selectText(ox, this.x, oy + oyd, this.ydisp + this.y);
+    }
+    return;
+  }
+
+  if (key === 'e' || key === 'E') {
+    var x = this.x + 1;
+    var y = this.y;
+    var yb = this.ydisp;
+    if (x >= this.cols) x--;
+
+    for (;;) {
+      var line = this.lines[yb + y];
+      while (x < this.cols) {
+        if (line[x][1] <= ' ') {
+          x++;
+        } else {
+          break;
+        }
+      }
+      while (x < this.cols) {
+        if (line[x][1] <= ' ') {
+          if (x - 1 >= 0 && line[x - 1][1] > ' ') {
+            x--;
+            break;
+          }
+        }
+        x++;
+      }
+      if (x >= this.cols) x = this.cols - 1;
+      if (x === this.cols - 1 && line[x][1] <= ' ') {
+        x = 0;
+        if (++y >= this.rows) {
+          y--;
+          if (++yb > this.ybase) {
+            yb = this.ybase;
+            break;
+          }
+        }
+        continue;
+      }
+      break;
+    }
+
+    this.x = x, this.y = y;
+    this.scrollDisp(-this.ydisp + yb);
+
+    if (this.visualMode) {
+      this.selectText(ox, this.x, oy + oyd, this.ydisp + this.y);
+    }
+    return;
+  }
+
+  if (key === '^' || key === '0') {
+    var ox = this.x;
+
+    if (key === '0') {
+      this.x = 0;
+    } else if (key === '^') {
+      var line = this.lines[this.ydisp + this.y];
+      var x = 0;
+      while (x < this.cols) {
+        if (line[x][1] > ' ') {
+          break;
+        }
+        x++;
+      }
+      if (x >= this.cols) x = this.cols - 1;
+      this.x = x;
+    }
+
+    if (this.visualMode) {
+      this.selectText(ox, this.x, this.ydisp + this.y, this.ydisp + this.y);
+    } else {
+      this.refresh(this.y, this.y);
+    }
+    return;
+  }
+
+  if (key === '$') {
+    var ox = this.x;
+    var line = this.lines[this.ydisp + this.y];
+    var x = this.cols - 1;
+    while (x >= 0) {
+      if (line[x][1] > ' ') {
+        if (this.visualMode && x < this.cols - 1) x++;
+        break;
+      }
+      x--;
+    }
+    if (x < 0) x = 0;
+    this.x = x;
+    if (this.visualMode) {
+      this.selectText(ox, this.x, this.ydisp + this.y, this.ydisp + this.y);
+    } else {
+      this.refresh(this.y, this.y);
+    }
+    return;
+  }
+
+  if (key === 'g' || key === 'G') {
+    var ox = this.x;
+    var oy = this.y;
+    var oyd = this.ydisp;
+    if (key === 'g') {
+      this.x = 0, this.y = 0;
+      this.scrollDisp(-this.ydisp);
+    } else if (key === 'G') {
+      this.x = 0, this.y = this.rows - 1;
+      this.scrollDisp(this.ybase);
+    }
+    if (this.visualMode) {
+      this.selectText(ox, this.x, oy + oyd, this.ydisp + this.y);
+    }
+    return;
+  }
+
+  if (key === 'H' || key === 'M' || key === 'L') {
+    var ox = this.x;
+    var oy = this.y;
+    if (key === 'H') {
+      this.x = 0, this.y = 0;
+    } else if (key === 'M') {
+      this.x = 0, this.y = this.rows / 2 | 0;
+    } else if (key === 'L') {
+      this.x = 0, this.y = this.rows - 1;
+    }
+    if (this.visualMode) {
+      this.selectText(ox, this.x, this.ydisp + oy, this.ydisp + this.y);
+    } else {
+      this.refresh(oy, oy);
+      this.refresh(this.y, this.y);
+    }
+    return;
+  }
+
+  if (key === '{' || key === '}') {
+    var ox = this.x;
+    var oy = this.y;
+    var oyd = this.ydisp;
+
+    var line;
+    var saw_full = false;
+    var found = false;
+    var first_is_space = -1;
+    var y = this.y + (key === '{' ? -1 : 1);
+    var yb = this.ydisp;
+    var i;
+
+    if (key === '{') {
+      if (y < 0) {
+        y++;
+        if (yb > 0) yb--;
+      }
+    } else if (key === '}') {
+      if (y >= this.rows) {
+        y--;
+        if (yb < this.ybase) yb++;
+      }
+    }
+
+    for (;;) {
+      line = this.lines[yb + y];
+
+      for (i = 0; i < this.cols; i++) {
+        if (line[i][1] > ' ') {
+          if (first_is_space === -1) {
+            first_is_space = 0;
+          }
+          saw_full = true;
+          break;
+        } else if (i === this.cols - 1) {
+          if (first_is_space === -1) {
+            first_is_space = 1;
+          } else if (first_is_space === 0) {
+            found = true;
+          } else if (first_is_space === 1) {
+            if (saw_full) found = true;
+          }
+          break;
+        }
+      }
+
+      if (found) break;
+
+      if (key === '{') {
+        y--;
+        if (y < 0) {
+          y++;
+          if (yb > 0) yb--;
+          else break;
+        }
+      } else if (key === '}') {
+        y++;
+        if (y >= this.rows) {
+          y--;
+          if (yb < this.ybase) yb++;
+          else break;
+        }
+      }
+    }
+
+    if (!found) {
+      if (key === '{') {
+        y = 0;
+        yb = 0;
+      } else if (key === '}') {
+        y = this.rows - 1;
+        yb = this.ybase;
+      }
+    }
+
+    this.x = 0, this.y = y;
+    this.scrollDisp(-this.ydisp + yb);
+
+    if (this.visualMode) {
+      this.selectText(ox, this.x, oy + oyd, this.ydisp + this.y);
+    }
+    return;
+  }
+
+  if (key === '/' || key === '?') {
+    if (!this.visualMode) {
+      this.enterSearch(key === '/');
+    }
+    return;
+  }
+
+  return false;
+};
+
+Terminal.prototype.keySearch = function(ev, key) {
+  if (key === '\x1b') {
+    this.leaveSearch();
+    return;
+  }
+
+  if (key === '\r' || (!this.searchMode && (key === 'n' || key === 'N'))) {
+    this.leaveSearch();
+
+    var entry = this.entry;
+
+    if (!entry) {
+      this.refresh(0, this.rows - 1);
+      return;
+    }
+
+    var ox = this.x;
+    var oy = this.y;
+    var oyd = this.ydisp;
+
+    var line;
+    var found = false;
+    var wrapped = false;
+    var x = this.x + 1;
+    var y = this.ydisp + this.y;
+    var yb, i;
+    var up = key === 'N'
+      ? this.searchDown
+      : !this.searchDown;
+
+    for (;;) {
+      line = this.lines[y];
+
+      while (x < this.cols) {
+        for (i = 0; i < entry.length; i++) {
+          if (x + i >= this.cols) break;
+          if (line[x + i][1] !== entry[i]) {
+            break;
+          } else if (line[x + i][1] === entry[i] && i === entry.length - 1) {
+            found = true;
+            break;
+          }
+        }
+        if (found) break;
+        x += i + 1;
+      }
+      if (found) break;
+
+      x = 0;
+
+      if (!up) {
+        y++;
+        if (y > this.ybase + this.rows - 1) {
+          if (wrapped) break;
+          // this.setMessage('Search wrapped. Continuing at TOP.');
+          wrapped = true;
+          y = 0;
+        }
+      } else {
+        y--;
+        if (y < 0) {
+          if (wrapped) break;
+          // this.setMessage('Search wrapped. Continuing at BOTTOM.');
+          wrapped = true;
+          y = this.ybase + this.rows - 1;
+        }
+      }
+    }
+
+    if (found) {
+      if (y - this.ybase < 0) {
+        yb = y;
+        y = 0;
+        if (yb > this.ybase) {
+          y = yb - this.ybase;
+          yb = this.ybase;
+        }
+      } else {
+        yb = this.ybase;
+        y -= this.ybase;
+      }
+
+      this.x = x, this.y = y;
+      this.scrollDisp(-this.ydisp + yb);
+
+      if (this.visualMode) {
+        this.selectText(ox, this.x, oy + oyd, this.ydisp + this.y);
+      }
+      return;
+    }
+
+    // this.setMessage("No matches found.");
+    this.refresh(0, this.rows - 1);
+
+    return;
+  }
+
+  if (key === '\b' || key === '\x7f') {
+    if (this.entry.length === 0) return;
+    var bottom = this.ydisp + this.rows - 1;
+    this.entry = this.entry.slice(0, -1);
+    var i = this.entryPrefix.length + this.entry.length;
+    //this.lines[bottom][i][1] = ' ';
+    this.lines[bottom][i] = [
+      this.lines[bottom][i][0],
+      ' '
+    ];
+    this.x--;
+    this.refresh(this.rows - 1, this.rows - 1);
+    this.refresh(this.y, this.y);
+    return;
+  }
+
+  if (key.length === 1 && key >= ' ' && key <= '~') {
+    var bottom = this.ydisp + this.rows - 1;
+    this.entry += key;
+    var i = this.entryPrefix.length + this.entry.length - 1;
+    //this.lines[bottom][i][0] = (this.defAttr & ~0x1ff) | 4;
+    //this.lines[bottom][i][1] = key;
+    this.lines[bottom][i] = [
+      (this.defAttr & ~0x1ff) | 4,
+      key
+    ];
+    this.x++;
+    this.refresh(this.rows - 1, this.rows - 1);
+    this.refresh(this.y, this.y);
+    return;
+  }
+
+  return false;
+};
+
+/**
+ * Character Sets
+ */
+
+Terminal.charsets = {};
+
+// DEC Special Character and Line Drawing Set.
+// http://vt100.net/docs/vt102-ug/table5-13.html
+// A lot of curses apps use this if they see TERM=xterm.
+// testing: echo -e '\e(0a\e(B'
+// The xterm output sometimes seems to conflict with the
+// reference above. xterm seems in line with the reference
+// when running vttest however.
+// The table below now uses xterm's output from vttest.
+Terminal.charsets.SCLD = { // (0
+  '`': '\u25c6', // '◆'
+  'a': '\u2592', // '▒'
+  'b': '\u0009', // '\t'
+  'c': '\u000c', // '\f'
+  'd': '\u000d', // '\r'
+  'e': '\u000a', // '\n'
+  'f': '\u00b0', // '°'
+  'g': '\u00b1', // '±'
+  'h': '\u2424', // '\u2424' (NL)
+  'i': '\u000b', // '\v'
+  'j': '\u2518', // '┘'
+  'k': '\u2510', // '┐'
+  'l': '\u250c', // '┌'
+  'm': '\u2514', // '└'
+  'n': '\u253c', // '┼'
+  'o': '\u23ba', // '⎺'
+  'p': '\u23bb', // '⎻'
+  'q': '\u2500', // '─'
+  'r': '\u23bc', // '⎼'
+  's': '\u23bd', // '⎽'
+  't': '\u251c', // '├'
+  'u': '\u2524', // '┤'
+  'v': '\u2534', // '┴'
+  'w': '\u252c', // '┬'
+  'x': '\u2502', // '│'
+  'y': '\u2264', // '≤'
+  'z': '\u2265', // '≥'
+  '{': '\u03c0', // 'π'
+  '|': '\u2260', // '≠'
+  '}': '\u00a3', // '£'
+  '~': '\u00b7'  // '·'
+};
+
+Terminal.charsets.UK = null; // (A
+Terminal.charsets.US = null; // (B (USASCII)
+Terminal.charsets.Dutch = null; // (4
+Terminal.charsets.Finnish = null; // (C or (5
+Terminal.charsets.French = null; // (R
+Terminal.charsets.FrenchCanadian = null; // (Q
+Terminal.charsets.German = null; // (K
+Terminal.charsets.Italian = null; // (Y
+Terminal.charsets.NorwegianDanish = null; // (E or (6
+Terminal.charsets.Spanish = null; // (Z
+Terminal.charsets.Swedish = null; // (H or (7
+Terminal.charsets.Swiss = null; // (=
+Terminal.charsets.ISOLatin = null; // /A
+
+/**
+ * Helpers
+ */
+
+function on(el, type, handler, capture) {
+  el.addEventListener(type, handler, capture || false);
+}
+
+function off(el, type, handler, capture) {
+  el.removeEventListener(type, handler, capture || false);
+}
+
+function cancel(ev) {
+  if (ev.preventDefault) ev.preventDefault();
+  ev.returnValue = false;
+  if (ev.stopPropagation) ev.stopPropagation();
+  ev.cancelBubble = true;
+  return false;
+}
+
+function inherits(child, parent) {
+  function f() {
+    this.constructor = child;
+  }
+  f.prototype = parent.prototype;
+  child.prototype = new f;
+}
+
+// if bold is broken, we can't
+// use it in the terminal.
+function isBoldBroken(document) {
+  var body = document.getElementsByTagName('body')[0];
+  var el = document.createElement('span');
+  el.innerHTML = 'hello world';
+  body.appendChild(el);
+  var w1 = el.scrollWidth;
+  el.style.fontWeight = 'bold';
+  var w2 = el.scrollWidth;
+  body.removeChild(el);
+  return w1 !== w2;
+}
+
+var String = this.String;
+var setTimeout = this.setTimeout;
+var setInterval = this.setInterval;
+
+function indexOf(obj, el) {
+  var i = obj.length;
+  while (i--) {
+    if (obj[i] === el) return i;
+  }
+  return -1;
+}
+
+function isWide(ch) {
+  if (ch <= '\uff00') return false;
+  return (ch >= '\uff01' && ch <= '\uffbe')
+      || (ch >= '\uffc2' && ch <= '\uffc7')
+      || (ch >= '\uffca' && ch <= '\uffcf')
+      || (ch >= '\uffd2' && ch <= '\uffd7')
+      || (ch >= '\uffda' && ch <= '\uffdc')
+      || (ch >= '\uffe0' && ch <= '\uffe6')
+      || (ch >= '\uffe8' && ch <= '\uffee');
+}
+
+function matchColor(r1, g1, b1) {
+  var hash = (r1 << 16) | (g1 << 8) | b1;
+
+  if (matchColor._cache[hash] != null) {
+    return matchColor._cache[hash];
+  }
+
+  var ldiff = Infinity
+    , li = -1
+    , i = 0
+    , c
+    , r2
+    , g2
+    , b2
+    , diff;
+
+  for (; i < Terminal.vcolors.length; i++) {
+    c = Terminal.vcolors[i];
+    r2 = c[0];
+    g2 = c[1];
+    b2 = c[2];
+
+    diff = matchColor.distance(r1, g1, b1, r2, g2, b2);
+
+    if (diff === 0) {
+      li = i;
+      break;
+    }
+
+    if (diff < ldiff) {
+      ldiff = diff;
+      li = i;
+    }
+  }
+
+  return matchColor._cache[hash] = li;
+}
+
+matchColor._cache = {};
+
+// http://stackoverflow.com/questions/1633828
+matchColor.distance = function(r1, g1, b1, r2, g2, b2) {
+  return Math.pow(30 * (r1 - r2), 2)
+    + Math.pow(59 * (g1 - g2), 2)
+    + Math.pow(11 * (b1 - b2), 2);
+};
+
+function each(obj, iter, con) {
+  if (obj.forEach) return obj.forEach(iter, con);
+  for (var i = 0; i < obj.length; i++) {
+    iter.call(con, obj[i], i, obj);
+  }
+}
+
+function keys(obj) {
+  if (Object.keys) return Object.keys(obj);
+  var key, keys = [];
+  for (key in obj) {
+    if (Object.prototype.hasOwnProperty.call(obj, key)) {
+      keys.push(key);
+    }
+  }
+  return keys;
+}
+
+/**
+ * Expose
+ */
+
+Terminal.EventEmitter = EventEmitter;
+Terminal.inherits = inherits;
+Terminal.on = on;
+Terminal.off = off;
+Terminal.cancel = cancel;
+
+if (typeof module !== 'undefined') {
+  module.exports = Terminal;
+} else {
+  this.Terminal = Terminal;
+}
+
+}).call(function() {
+  return this || (typeof window !== 'undefined' ? window : global);
+}());
diff --git a/app/static/sass/main.sass b/app/static/sass/main.sass
index 76972d4..2c8a427 100644
--- a/app/static/sass/main.sass
+++ b/app/static/sass/main.sass
@@ -1,18 +1,20 @@
+$bg: #222
+$fg: #ccc
 
 html, body
   height: 100%
 
 body
-  color: #5a5a5a
+  background-color: $bg
 
   main
     display: flex
+    height: 100%
     flex-direction: column
 
-    .term
+    .terminal
+      /* margin: .5em
       flex: 1
-      code
-        white-space: pre-line
-
-    #prompt
-      border: 1px solid #777
+      font-family: monospace
+      outline: none
+      color: $fg
diff --git a/app/static/stylesheets/main.css b/app/static/stylesheets/main.css
index df94882..87b0b32 100644
--- a/app/static/stylesheets/main.css
+++ b/app/static/stylesheets/main.css
@@ -1,26 +1,23 @@
-/* line 2, ../sass/main.sass */
+/* line 4, ../sass/main.sass */
 html, body {
   height: 100%;
 }
 
-/* line 5, ../sass/main.sass */
+/* line 7, ../sass/main.sass */
 body {
-  color: #5a5a5a;
+  background-color: #222222;
 }
-/* line 8, ../sass/main.sass */
+/* line 10, ../sass/main.sass */
 body main {
   display: flex;
+  height: 100%;
   flex-direction: column;
 }
-/* line 12, ../sass/main.sass */
-body main .term {
+/* line 15, ../sass/main.sass */
+body main .terminal {
+  /* margin: .5em */
   flex: 1;
-}
-/* line 14, ../sass/main.sass */
-body main .term code {
-  white-space: pre-line;
-}
-/* line 17, ../sass/main.sass */
-body main #prompt {
-  border: 1px solid #777777;
+  font-family: monospace;
+  outline: none;
+  color: #cccccc;
 }
diff --git a/app/templates/index.html b/app/templates/index.html
index d9dea5d..5374a51 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -14,15 +14,12 @@
   </head>
 
   <body>
-
     <main>
-      <section class="term">
-        <code></code>
-      </section>
     </main>
 
     <script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
     <script src="{{ static_url('javascripts/bootstrap.min.js') }}"></script>
+    <script src="{{ static_url('javascripts/term.js') }}"></script>
     <script src="{{ static_url('javascripts/main.js') }}"></script>
   </body>
 </html>