incrementally verify denoms

The denominations are not stored in a separate object store.

1 files changed, 1462 insertions, 1296 deletions

diff --git a/node_modules/sax/lib/sax.js b/node_modules/sax/lib/sax.js
index 410a50748..f125c5fee 100644
--- a/node_modules/sax/lib/sax.js
+++ b/node_modules/sax/lib/sax.js
@@ -1,1410 +1,1576 @@
-// wrapper for non-node envs
-;(function (sax) {
-
-sax.parser = function (strict, opt) { return new SAXParser(strict, opt) }
-sax.SAXParser = SAXParser
-sax.SAXStream = SAXStream
-sax.createStream = createStream
-
-// When we pass the MAX_BUFFER_LENGTH position, start checking for buffer overruns.
-// When we check, schedule the next check for MAX_BUFFER_LENGTH - (max(buffer lengths)),
-// since that's the earliest that a buffer overrun could occur.  This way, checks are
-// as rare as required, but as often as necessary to ensure never crossing this bound.
-// Furthermore, buffers are only tested at most once per write(), so passing a very
-// large string into write() might have undesirable effects, but this is manageable by
-// the caller, so it is assumed to be safe.  Thus, a call to write() may, in the extreme
-// edge case, result in creating at most one complete copy of the string passed in.
-// Set to Infinity to have unlimited buffers.
-sax.MAX_BUFFER_LENGTH = 64 * 1024
-
-var buffers = [
-  "comment", "sgmlDecl", "textNode", "tagName", "doctype",
-  "procInstName", "procInstBody", "entity", "attribName",
-  "attribValue", "cdata", "script"
-]
-
-sax.EVENTS = // for discoverability.
-  [ "text"
-  , "processinginstruction"
-  , "sgmldeclaration"
-  , "doctype"
-  , "comment"
-  , "attribute"
-  , "opentag"
-  , "closetag"
-  , "opencdata"
-  , "cdata"
-  , "closecdata"
-  , "error"
-  , "end"
-  , "ready"
-  , "script"
-  , "opennamespace"
-  , "closenamespace"
+;(function (sax) { // wrapper for non-node envs
+  sax.parser = function (strict, opt) { return new SAXParser(strict, opt) }
+  sax.SAXParser = SAXParser
+  sax.SAXStream = SAXStream
+  sax.createStream = createStream
+
+  // When we pass the MAX_BUFFER_LENGTH position, start checking for buffer overruns.
+  // When we check, schedule the next check for MAX_BUFFER_LENGTH - (max(buffer lengths)),
+  // since that's the earliest that a buffer overrun could occur.  This way, checks are
+  // as rare as required, but as often as necessary to ensure never crossing this bound.
+  // Furthermore, buffers are only tested at most once per write(), so passing a very
+  // large string into write() might have undesirable effects, but this is manageable by
+  // the caller, so it is assumed to be safe.  Thus, a call to write() may, in the extreme
+  // edge case, result in creating at most one complete copy of the string passed in.
+  // Set to Infinity to have unlimited buffers.
+  sax.MAX_BUFFER_LENGTH = 64 * 1024
+
+  var buffers = [
+    'comment', 'sgmlDecl', 'textNode', 'tagName', 'doctype',
+    'procInstName', 'procInstBody', 'entity', 'attribName',
+    'attribValue', 'cdata', 'script'
   ]
 
-function SAXParser (strict, opt) {
-  if (!(this instanceof SAXParser)) return new SAXParser(strict, opt)
-
-  var parser = this
-  clearBuffers(parser)
-  parser.q = parser.c = ""
-  parser.bufferCheckPosition = sax.MAX_BUFFER_LENGTH
-  parser.opt = opt || {}
-  parser.opt.lowercase = parser.opt.lowercase || parser.opt.lowercasetags
-  parser.looseCase = parser.opt.lowercase ? "toLowerCase" : "toUpperCase"
-  parser.tags = []
-  parser.closed = parser.closedRoot = parser.sawRoot = false
-  parser.tag = parser.error = null
-  parser.strict = !!strict
-  parser.noscript = !!(strict || parser.opt.noscript)
-  parser.state = S.BEGIN
-  parser.ENTITIES = Object.create(sax.ENTITIES)
-  parser.attribList = []
-
-  // namespaces form a prototype chain.
-  // it always points at the current tag,
-  // which protos to its parent tag.
-  if (parser.opt.xmlns) parser.ns = Object.create(rootNS)
-
-  // mostly just for error reporting
-  parser.trackPosition = parser.opt.position !== false
-  if (parser.trackPosition) {
-    parser.position = parser.line = parser.column = 0
-  }
-  emit(parser, "onready")
-}
-
-if (!Object.create) Object.create = function (o) {
-  function f () { this.__proto__ = o }
-  f.prototype = o
-  return new f
-}
-
-if (!Object.getPrototypeOf) Object.getPrototypeOf = function (o) {
-  return o.__proto__
-}
-
-if (!Object.keys) Object.keys = function (o) {
-  var a = []
-  for (var i in o) if (o.hasOwnProperty(i)) a.push(i)
-  return a
-}
-
-function checkBufferLength (parser) {
-  var maxAllowed = Math.max(sax.MAX_BUFFER_LENGTH, 10)
-    , maxActual = 0
-  for (var i = 0, l = buffers.length; i < l; i ++) {
-    var len = parser[buffers[i]].length
-    if (len > maxAllowed) {
-      // Text/cdata nodes can get big, and since they're buffered,
-      // we can get here under normal conditions.
-      // Avoid issues by emitting the text node now,
-      // so at least it won't get any bigger.
-      switch (buffers[i]) {
-        case "textNode":
-          closeText(parser)
-        break
+  sax.EVENTS = [
+    'text',
+    'processinginstruction',
+    'sgmldeclaration',
+    'doctype',
+    'comment',
+    'opentagstart',
+    'attribute',
+    'opentag',
+    'closetag',
+    'opencdata',
+    'cdata',
+    'closecdata',
+    'error',
+    'end',
+    'ready',
+    'script',
+    'opennamespace',
+    'closenamespace'
+  ]
 
-        case "cdata":
-          emitNode(parser, "oncdata", parser.cdata)
-          parser.cdata = ""
-        break
+  function SAXParser (strict, opt) {
+    if (!(this instanceof SAXParser)) {
+      return new SAXParser(strict, opt)
+    }
 
-        case "script":
-          emitNode(parser, "onscript", parser.script)
-          parser.script = ""
-        break
+    var parser = this
+    clearBuffers(parser)
+    parser.q = parser.c = ''
+    parser.bufferCheckPosition = sax.MAX_BUFFER_LENGTH
+    parser.opt = opt || {}
+    parser.opt.lowercase = parser.opt.lowercase || parser.opt.lowercasetags
+    parser.looseCase = parser.opt.lowercase ? 'toLowerCase' : 'toUpperCase'
+    parser.tags = []
+    parser.closed = parser.closedRoot = parser.sawRoot = false
+    parser.tag = parser.error = null
+    parser.strict = !!strict
+    parser.noscript = !!(strict || parser.opt.noscript)
+    parser.state = S.BEGIN
+    parser.strictEntities = parser.opt.strictEntities
+    parser.ENTITIES = parser.strictEntities ? Object.create(sax.XML_ENTITIES) : Object.create(sax.ENTITIES)
+    parser.attribList = []
+
+    // namespaces form a prototype chain.
+    // it always points at the current tag,
+    // which protos to its parent tag.
+    if (parser.opt.xmlns) {
+      parser.ns = Object.create(rootNS)
+    }
 
-        default:
-          error(parser, "Max buffer length exceeded: "+buffers[i])
-      }
+    // mostly just for error reporting
+    parser.trackPosition = parser.opt.position !== false
+    if (parser.trackPosition) {
+      parser.position = parser.line = parser.column = 0
     }
-    maxActual = Math.max(maxActual, len)
-  }
-  // schedule the next check for the earliest possible buffer overrun.
-  parser.bufferCheckPosition = (sax.MAX_BUFFER_LENGTH - maxActual)
-                             + parser.position
-}
-
-function clearBuffers (parser) {
-  for (var i = 0, l = buffers.length; i < l; i ++) {
-    parser[buffers[i]] = ""
+    emit(parser, 'onready')
   }
-}
 
-function flushBuffers (parser) {
-  closeText(parser)
-  if (parser.cdata !== "") {
-    emitNode(parser, "oncdata", parser.cdata)
-    parser.cdata = ""
+  if (!Object.create) {
+    Object.create = function (o) {
+      function F () {}
+      F.prototype = o
+      var newf = new F()
+      return newf
+    }
   }
-  if (parser.script !== "") {
-    emitNode(parser, "onscript", parser.script)
-    parser.script = ""
+
+  if (!Object.keys) {
+    Object.keys = function (o) {
+      var a = []
+      for (var i in o) if (o.hasOwnProperty(i)) a.push(i)
+      return a
+    }
   }
-}
-
-SAXParser.prototype =
-  { end: function () { end(this) }
-  , write: write
-  , resume: function () { this.error = null; return this }
-  , close: function () { return this.write(null) }
-  , flush: function () { flushBuffers(this) }
+
+  function checkBufferLength (parser) {
+    var maxAllowed = Math.max(sax.MAX_BUFFER_LENGTH, 10)
+    var maxActual = 0
+    for (var i = 0, l = buffers.length; i < l; i++) {
+      var len = parser[buffers[i]].length
+      if (len > maxAllowed) {
+        // Text/cdata nodes can get big, and since they're buffered,
+        // we can get here under normal conditions.
+        // Avoid issues by emitting the text node now,
+        // so at least it won't get any bigger.
+        switch (buffers[i]) {
+          case 'textNode':
+            closeText(parser)
+            break
+
+          case 'cdata':
+            emitNode(parser, 'oncdata', parser.cdata)
+            parser.cdata = ''
+            break
+
+          case 'script':
+            emitNode(parser, 'onscript', parser.script)
+            parser.script = ''
+            break
+
+          default:
+            error(parser, 'Max buffer length exceeded: ' + buffers[i])
+        }
+      }
+      maxActual = Math.max(maxActual, len)
+    }
+    // schedule the next check for the earliest possible buffer overrun.
+    var m = sax.MAX_BUFFER_LENGTH - maxActual
+    parser.bufferCheckPosition = m + parser.position
   }
 
-try {
-  var Stream = require("stream").Stream
-} catch (ex) {
-  var Stream = function () {}
-}
+  function clearBuffers (parser) {
+    for (var i = 0, l = buffers.length; i < l; i++) {
+      parser[buffers[i]] = ''
+    }
+  }
 
+  function flushBuffers (parser) {
+    closeText(parser)
+    if (parser.cdata !== '') {
+      emitNode(parser, 'oncdata', parser.cdata)
+      parser.cdata = ''
+    }
+    if (parser.script !== '') {
+      emitNode(parser, 'onscript', parser.script)
+      parser.script = ''
+    }
+  }
 
-var streamWraps = sax.EVENTS.filter(function (ev) {
-  return ev !== "error" && ev !== "end"
-})
+  SAXParser.prototype = {
+    end: function () { end(this) },
+    write: write,
+    resume: function () { this.error = null; return this },
+    close: function () { return this.write(null) },
+    flush: function () { flushBuffers(this) }
+  }
 
-function createStream (strict, opt) {
-  return new SAXStream(strict, opt)
-}
+  var Stream
+  try {
+    Stream = require('stream').Stream
+  } catch (ex) {
+    Stream = function () {}
+  }
 
-function SAXStream (strict, opt) {
-  if (!(this instanceof SAXStream)) return new SAXStream(strict, opt)
+  var streamWraps = sax.EVENTS.filter(function (ev) {
+    return ev !== 'error' && ev !== 'end'
+  })
 
-  Stream.apply(this)
+  function createStream (strict, opt) {
+    return new SAXStream(strict, opt)
+  }
 
-  this._parser = new SAXParser(strict, opt)
-  this.writable = true
-  this.readable = true
+  function SAXStream (strict, opt) {
+    if (!(this instanceof SAXStream)) {
+      return new SAXStream(strict, opt)
+    }
 
+    Stream.apply(this)
 
-  var me = this
+    this._parser = new SAXParser(strict, opt)
+    this.writable = true
+    this.readable = true
 
-  this._parser.onend = function () {
-    me.emit("end")
-  }
+    var me = this
 
-  this._parser.onerror = function (er) {
-    me.emit("error", er)
+    this._parser.onend = function () {
+      me.emit('end')
+    }
 
-    // if didn't throw, then means error was handled.
-    // go ahead and clear error, so we can write again.
-    me._parser.error = null
-  }
+    this._parser.onerror = function (er) {
+      me.emit('error', er)
 
-  this._decoder = null;
+      // if didn't throw, then means error was handled.
+      // go ahead and clear error, so we can write again.
+      me._parser.error = null
+    }
 
-  streamWraps.forEach(function (ev) {
-    Object.defineProperty(me, "on" + ev, {
-      get: function () { return me._parser["on" + ev] },
-      set: function (h) {
-        if (!h) {
-          me.removeAllListeners(ev)
-          return me._parser["on"+ev] = h
-        }
-        me.on(ev, h)
-      },
-      enumerable: true,
-      configurable: false
+    this._decoder = null
+
+    streamWraps.forEach(function (ev) {
+      Object.defineProperty(me, 'on' + ev, {
+        get: function () {
+          return me._parser['on' + ev]
+        },
+        set: function (h) {
+          if (!h) {
+            me.removeAllListeners(ev)
+            me._parser['on' + ev] = h
+            return h
+          }
+          me.on(ev, h)
+        },
+        enumerable: true,
+        configurable: false
+      })
     })
-  })
-}
+  }
 
-SAXStream.prototype = Object.create(Stream.prototype,
-  { constructor: { value: SAXStream } })
+  SAXStream.prototype = Object.create(Stream.prototype, {
+    constructor: {
+      value: SAXStream
+    }
+  })
 
-SAXStream.prototype.write = function (data) {
-  if (typeof Buffer === 'function' &&
+  SAXStream.prototype.write = function (data) {
+    if (typeof Buffer === 'function' &&
       typeof Buffer.isBuffer === 'function' &&
       Buffer.isBuffer(data)) {
-    if (!this._decoder) {
-      var SD = require('string_decoder').StringDecoder
-      this._decoder = new SD('utf8')
+      if (!this._decoder) {
+        var SD = require('string_decoder').StringDecoder
+        this._decoder = new SD('utf8')
+      }
+      data = this._decoder.write(data)
     }
-    data = this._decoder.write(data);
+
+    this._parser.write(data.toString())
+    this.emit('data', data)
+    return true
   }
 
-  this._parser.write(data.toString())
-  this.emit("data", data)
-  return true
-}
-
-SAXStream.prototype.end = function (chunk) {
-  if (chunk && chunk.length) this.write(chunk)
-  this._parser.end()
-  return true
-}
-
-SAXStream.prototype.on = function (ev, handler) {
-  var me = this
-  if (!me._parser["on"+ev] && streamWraps.indexOf(ev) !== -1) {
-    me._parser["on"+ev] = function () {
-      var args = arguments.length === 1 ? [arguments[0]]
-               : Array.apply(null, arguments)
-      args.splice(0, 0, ev)
-      me.emit.apply(me, args)
+  SAXStream.prototype.end = function (chunk) {
+    if (chunk && chunk.length) {
+      this.write(chunk)
     }
+    this._parser.end()
+    return true
   }
 
-  return Stream.prototype.on.call(me, ev, handler)
-}
+  SAXStream.prototype.on = function (ev, handler) {
+    var me = this
+    if (!me._parser['on' + ev] && streamWraps.indexOf(ev) !== -1) {
+      me._parser['on' + ev] = function () {
+        var args = arguments.length === 1 ? [arguments[0]] : Array.apply(null, arguments)
+        args.splice(0, 0, ev)
+        me.emit.apply(me, args)
+      }
+    }
 
+    return Stream.prototype.on.call(me, ev, handler)
+  }
 
+  // character classes and tokens
+  var whitespace = '\r\n\t '
 
-// character classes and tokens
-var whitespace = "\r\n\t "
   // this really needs to be replaced with character classes.
   // XML allows all manner of ridiculous numbers and digits.
-  , number = "0124356789"
-  , letter = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+  var number = '0124356789'
+  var letter = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
+
   // (Letter | "_" | ":")
-  , quote = "'\""
-  , entity = number+letter+"#"
-  , attribEnd = whitespace + ">"
-  , CDATA = "[CDATA["
-  , DOCTYPE = "DOCTYPE"
-  , XML_NAMESPACE = "http://www.w3.org/XML/1998/namespace"
-  , XMLNS_NAMESPACE = "http://www.w3.org/2000/xmlns/"
-  , rootNS = { xml: XML_NAMESPACE, xmlns: XMLNS_NAMESPACE }
-
-// turn all the string character sets into character class objects.
-whitespace = charClass(whitespace)
-number = charClass(number)
-letter = charClass(letter)
-
-// http://www.w3.org/TR/REC-xml/#NT-NameStartChar
-// This implementation works on strings, a single character at a time
-// as such, it cannot ever support astral-plane characters (10000-EFFFF)
-// without a significant breaking change to either this  parser, or the
-// JavaScript language.  Implementation of an emoji-capable xml parser
-// is left as an exercise for the reader.
-var nameStart = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/
-
-var nameBody = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\u00B7\u0300-\u036F\u203F-\u2040\.\d-]/
-
-quote = charClass(quote)
-entity = charClass(entity)
-attribEnd = charClass(attribEnd)
-
-function charClass (str) {
-  return str.split("").reduce(function (s, c) {
-    s[c] = true
-    return s
-  }, {})
-}
-
-function isRegExp (c) {
-  return Object.prototype.toString.call(c) === '[object RegExp]'
-}
-
-function is (charclass, c) {
-  return isRegExp(charclass) ? !!c.match(charclass) : charclass[c]
-}
-
-function not (charclass, c) {
-  return !is(charclass, c)
-}
-
-var S = 0
-sax.STATE =
-{ BEGIN                     : S++
-, TEXT                      : S++ // general stuff
-, TEXT_ENTITY               : S++ // &amp and such.
-, OPEN_WAKA                 : S++ // <
-, SGML_DECL                 : S++ // <!BLARG
-, SGML_DECL_QUOTED          : S++ // <!BLARG foo "bar
-, DOCTYPE                   : S++ // <!DOCTYPE
-, DOCTYPE_QUOTED            : S++ // <!DOCTYPE "//blah
-, DOCTYPE_DTD               : S++ // <!DOCTYPE "//blah" [ ...
-, DOCTYPE_DTD_QUOTED        : S++ // <!DOCTYPE "//blah" [ "foo
-, COMMENT_STARTING          : S++ // <!-
-, COMMENT                   : S++ // <!--
-, COMMENT_ENDING            : S++ // <!-- blah -
-, COMMENT_ENDED             : S++ // <!-- blah --
-, CDATA                     : S++ // <![CDATA[ something
-, CDATA_ENDING              : S++ // ]
-, CDATA_ENDING_2            : S++ // ]]
-, PROC_INST                 : S++ // <?hi
-, PROC_INST_BODY            : S++ // <?hi there
-, PROC_INST_ENDING          : S++ // <?hi "there" ?
-, OPEN_TAG                  : S++ // <strong
-, OPEN_TAG_SLASH            : S++ // <strong /
-, ATTRIB                    : S++ // <a
-, ATTRIB_NAME               : S++ // <a foo
-, ATTRIB_NAME_SAW_WHITE     : S++ // <a foo _
-, ATTRIB_VALUE              : S++ // <a foo=
-, ATTRIB_VALUE_QUOTED       : S++ // <a foo="bar
-, ATTRIB_VALUE_CLOSED       : S++ // <a foo="bar"
-, ATTRIB_VALUE_UNQUOTED     : S++ // <a foo=bar
-, ATTRIB_VALUE_ENTITY_Q     : S++ // <foo bar="&quot;"
-, ATTRIB_VALUE_ENTITY_U     : S++ // <foo bar=&quot;
-, CLOSE_TAG                 : S++ // </a
-, CLOSE_TAG_SAW_WHITE       : S++ // </a   >
-, SCRIPT                    : S++ // <script> ...
-, SCRIPT_ENDING             : S++ // <script> ... <
-}
-
-sax.ENTITIES =
-{ "amp" : "&"
-, "gt" : ">"
-, "lt" : "<"
-, "quot" : "\""
-, "apos" : "'"
-, "AElig" : 198
-, "Aacute" : 193
-, "Acirc" : 194
-, "Agrave" : 192
-, "Aring" : 197
-, "Atilde" : 195
-, "Auml" : 196
-, "Ccedil" : 199
-, "ETH" : 208
-, "Eacute" : 201
-, "Ecirc" : 202
-, "Egrave" : 200
-, "Euml" : 203
-, "Iacute" : 205
-, "Icirc" : 206
-, "Igrave" : 204
-, "Iuml" : 207
-, "Ntilde" : 209
-, "Oacute" : 211
-, "Ocirc" : 212
-, "Ograve" : 210
-, "Oslash" : 216
-, "Otilde" : 213
-, "Ouml" : 214
-, "THORN" : 222
-, "Uacute" : 218
-, "Ucirc" : 219
-, "Ugrave" : 217
-, "Uuml" : 220
-, "Yacute" : 221
-, "aacute" : 225
-, "acirc" : 226
-, "aelig" : 230
-, "agrave" : 224
-, "aring" : 229
-, "atilde" : 227
-, "auml" : 228
-, "ccedil" : 231
-, "eacute" : 233
-, "ecirc" : 234
-, "egrave" : 232
-, "eth" : 240
-, "euml" : 235
-, "iacute" : 237
-, "icirc" : 238
-, "igrave" : 236
-, "iuml" : 239
-, "ntilde" : 241
-, "oacute" : 243
-, "ocirc" : 244
-, "ograve" : 242
-, "oslash" : 248
-, "otilde" : 245
-, "ouml" : 246
-, "szlig" : 223
-, "thorn" : 254
-, "uacute" : 250
-, "ucirc" : 251
-, "ugrave" : 249
-, "uuml" : 252
-, "yacute" : 253
-, "yuml" : 255
-, "copy" : 169
-, "reg" : 174
-, "nbsp" : 160
-, "iexcl" : 161
-, "cent" : 162
-, "pound" : 163
-, "curren" : 164
-, "yen" : 165
-, "brvbar" : 166
-, "sect" : 167
-, "uml" : 168
-, "ordf" : 170
-, "laquo" : 171
-, "not" : 172
-, "shy" : 173
-, "macr" : 175
-, "deg" : 176
-, "plusmn" : 177
-, "sup1" : 185
-, "sup2" : 178
-, "sup3" : 179
-, "acute" : 180
-, "micro" : 181
-, "para" : 182
-, "middot" : 183
-, "cedil" : 184
-, "ordm" : 186
-, "raquo" : 187
-, "frac14" : 188
-, "frac12" : 189
-, "frac34" : 190
-, "iquest" : 191
-, "times" : 215
-, "divide" : 247
-, "OElig" : 338
-, "oelig" : 339
-, "Scaron" : 352
-, "scaron" : 353
-, "Yuml" : 376
-, "fnof" : 402
-, "circ" : 710
-, "tilde" : 732
-, "Alpha" : 913
-, "Beta" : 914
-, "Gamma" : 915
-, "Delta" : 916
-, "Epsilon" : 917
-, "Zeta" : 918
-, "Eta" : 919
-, "Theta" : 920
-, "Iota" : 921
-, "Kappa" : 922
-, "Lambda" : 923
-, "Mu" : 924
-, "Nu" : 925
-, "Xi" : 926
-, "Omicron" : 927
-, "Pi" : 928
-, "Rho" : 929
-, "Sigma" : 931
-, "Tau" : 932
-, "Upsilon" : 933
-, "Phi" : 934
-, "Chi" : 935
-, "Psi" : 936
-, "Omega" : 937
-, "alpha" : 945
-, "beta" : 946
-, "gamma" : 947
-, "delta" : 948
-, "epsilon" : 949
-, "zeta" : 950
-, "eta" : 951
-, "theta" : 952
-, "iota" : 953
-, "kappa" : 954
-, "lambda" : 955
-, "mu" : 956
-, "nu" : 957
-, "xi" : 958
-, "omicron" : 959
-, "pi" : 960
-, "rho" : 961
-, "sigmaf" : 962
-, "sigma" : 963
-, "tau" : 964
-, "upsilon" : 965
-, "phi" : 966
-, "chi" : 967
-, "psi" : 968
-, "omega" : 969
-, "thetasym" : 977
-, "upsih" : 978
-, "piv" : 982
-, "ensp" : 8194
-, "emsp" : 8195
-, "thinsp" : 8201
-, "zwnj" : 8204
-, "zwj" : 8205
-, "lrm" : 8206
-, "rlm" : 8207
-, "ndash" : 8211
-, "mdash" : 8212
-, "lsquo" : 8216
-, "rsquo" : 8217
-, "sbquo" : 8218
-, "ldquo" : 8220
-, "rdquo" : 8221
-, "bdquo" : 8222
-, "dagger" : 8224
-, "Dagger" : 8225
-, "bull" : 8226
-, "hellip" : 8230
-, "permil" : 8240
-, "prime" : 8242
-, "Prime" : 8243
-, "lsaquo" : 8249
-, "rsaquo" : 8250
-, "oline" : 8254
-, "frasl" : 8260
-, "euro" : 8364
-, "image" : 8465
-, "weierp" : 8472
-, "real" : 8476
-, "trade" : 8482
-, "alefsym" : 8501
-, "larr" : 8592
-, "uarr" : 8593
-, "rarr" : 8594
-, "darr" : 8595
-, "harr" : 8596
-, "crarr" : 8629
-, "lArr" : 8656
-, "uArr" : 8657
-, "rArr" : 8658
-, "dArr" : 8659
-, "hArr" : 8660
-, "forall" : 8704
-, "part" : 8706
-, "exist" : 8707
-, "empty" : 8709
-, "nabla" : 8711
-, "isin" : 8712
-, "notin" : 8713
-, "ni" : 8715
-, "prod" : 8719
-, "sum" : 8721
-, "minus" : 8722
-, "lowast" : 8727
-, "radic" : 8730
-, "prop" : 8733
-, "infin" : 8734
-, "ang" : 8736
-, "and" : 8743
-, "or" : 8744
-, "cap" : 8745
-, "cup" : 8746
-, "int" : 8747
-, "there4" : 8756
-, "sim" : 8764
-, "cong" : 8773
-, "asymp" : 8776
-, "ne" : 8800
-, "equiv" : 8801
-, "le" : 8804
-, "ge" : 8805
-, "sub" : 8834
-, "sup" : 8835
-, "nsub" : 8836
-, "sube" : 8838
-, "supe" : 8839
-, "oplus" : 8853
-, "otimes" : 8855
-, "perp" : 8869
-, "sdot" : 8901
-, "lceil" : 8968
-, "rceil" : 8969
-, "lfloor" : 8970
-, "rfloor" : 8971
-, "lang" : 9001
-, "rang" : 9002
-, "loz" : 9674
-, "spades" : 9824
-, "clubs" : 9827
-, "hearts" : 9829
-, "diams" : 9830
-}
-
-Object.keys(sax.ENTITIES).forEach(function (key) {
+  var quote = '\'"'
+  var attribEnd = whitespace + '>'
+  var CDATA = '[CDATA['
+  var DOCTYPE = 'DOCTYPE'
+  var XML_NAMESPACE = 'http://www.w3.org/XML/1998/namespace'
+  var XMLNS_NAMESPACE = 'http://www.w3.org/2000/xmlns/'
+  var rootNS = { xml: XML_NAMESPACE, xmlns: XMLNS_NAMESPACE }
+
+  // turn all the string character sets into character class objects.
+  whitespace = charClass(whitespace)
+  number = charClass(number)
+  letter = charClass(letter)
+
+  // http://www.w3.org/TR/REC-xml/#NT-NameStartChar
+  // This implementation works on strings, a single character at a time
+  // as such, it cannot ever support astral-plane characters (10000-EFFFF)
+  // without a significant breaking change to either this  parser, or the
+  // JavaScript language.  Implementation of an emoji-capable xml parser
+  // is left as an exercise for the reader.
+  var nameStart = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/
+
+  var nameBody = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\u00B7\u0300-\u036F\u203F-\u2040\.\d-]/
+
+  var entityStart = /[#:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/
+  var entityBody = /[#:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\u00B7\u0300-\u036F\u203F-\u2040\.\d-]/
+
+  quote = charClass(quote)
+  attribEnd = charClass(attribEnd)
+
+  function charClass (str) {
+    return str.split('').reduce(function (s, c) {
+      s[c] = true
+      return s
+    }, {})
+  }
+
+  function isRegExp (c) {
+    return Object.prototype.toString.call(c) === '[object RegExp]'
+  }
+
+  function is (charclass, c) {
+    return isRegExp(charclass) ? !!c.match(charclass) : charclass[c]
+  }
+
+  function not (charclass, c) {
+    return !is(charclass, c)
+  }
+
+  var S = 0
+  sax.STATE = {
+    BEGIN: S++, // leading byte order mark or whitespace
+    BEGIN_WHITESPACE: S++, // leading whitespace
+    TEXT: S++, // general stuff
+    TEXT_ENTITY: S++, // &amp and such.
+    OPEN_WAKA: S++, // <
+    SGML_DECL: S++, // <!BLARG
+    SGML_DECL_QUOTED: S++, // <!BLARG foo "bar
+    DOCTYPE: S++, // <!DOCTYPE
+    DOCTYPE_QUOTED: S++, // <!DOCTYPE "//blah
+    DOCTYPE_DTD: S++, // <!DOCTYPE "//blah" [ ...
+    DOCTYPE_DTD_QUOTED: S++, // <!DOCTYPE "//blah" [ "foo
+    COMMENT_STARTING: S++, // <!-
+    COMMENT: S++, // <!--
+    COMMENT_ENDING: S++, // <!-- blah -
+    COMMENT_ENDED: S++, // <!-- blah --
+    CDATA: S++, // <![CDATA[ something
+    CDATA_ENDING: S++, // ]
+    CDATA_ENDING_2: S++, // ]]
+    PROC_INST: S++, // <?hi
+    PROC_INST_BODY: S++, // <?hi there
+    PROC_INST_ENDING: S++, // <?hi "there" ?
+    OPEN_TAG: S++, // <strong
+    OPEN_TAG_SLASH: S++, // <strong /
+    ATTRIB: S++, // <a
+    ATTRIB_NAME: S++, // <a foo
+    ATTRIB_NAME_SAW_WHITE: S++, // <a foo _
+    ATTRIB_VALUE: S++, // <a foo=
+    ATTRIB_VALUE_QUOTED: S++, // <a foo="bar
+    ATTRIB_VALUE_CLOSED: S++, // <a foo="bar"
+    ATTRIB_VALUE_UNQUOTED: S++, // <a foo=bar
+    ATTRIB_VALUE_ENTITY_Q: S++, // <foo bar="&quot;"
+    ATTRIB_VALUE_ENTITY_U: S++, // <foo bar=&quot
+    CLOSE_TAG: S++, // </a
+    CLOSE_TAG_SAW_WHITE: S++, // </a   >
+    SCRIPT: S++, // <script> ...
+    SCRIPT_ENDING: S++ // <script> ... <
+  }
+
+  sax.XML_ENTITIES = {
+    'amp': '&',
+    'gt': '>',
+    'lt': '<',
+    'quot': '"',
+    'apos': "'"
+  }
+
+  sax.ENTITIES = {
+    'amp': '&',
+    'gt': '>',
+    'lt': '<',
+    'quot': '"',
+    'apos': "'",
+    'AElig': 198,
+    'Aacute': 193,
+    'Acirc': 194,
+    'Agrave': 192,
+    'Aring': 197,
+    'Atilde': 195,
+    'Auml': 196,
+    'Ccedil': 199,
+    'ETH': 208,
+    'Eacute': 201,
+    'Ecirc': 202,
+    'Egrave': 200,
+    'Euml': 203,
+    'Iacute': 205,
+    'Icirc': 206,
+    'Igrave': 204,
+    'Iuml': 207,
+    'Ntilde': 209,
+    'Oacute': 211,
+    'Ocirc': 212,
+    'Ograve': 210,
+    'Oslash': 216,
+    'Otilde': 213,
+    'Ouml': 214,
+    'THORN': 222,
+    'Uacute': 218,
+    'Ucirc': 219,
+    'Ugrave': 217,
+    'Uuml': 220,
+    'Yacute': 221,
+    'aacute': 225,
+    'acirc': 226,
+    'aelig': 230,
+    'agrave': 224,
+    'aring': 229,
+    'atilde': 227,
+    'auml': 228,
+    'ccedil': 231,
+    'eacute': 233,
+    'ecirc': 234,
+    'egrave': 232,
+    'eth': 240,
+    'euml': 235,
+    'iacute': 237,
+    'icirc': 238,
+    'igrave': 236,
+    'iuml': 239,
+    'ntilde': 241,
+    'oacute': 243,
+    'ocirc': 244,
+    'ograve': 242,
+    'oslash': 248,
+    'otilde': 245,
+    'ouml': 246,
+    'szlig': 223,
+    'thorn': 254,
+    'uacute': 250,
+    'ucirc': 251,
+    'ugrave': 249,
+    'uuml': 252,
+    'yacute': 253,
+    'yuml': 255,
+    'copy': 169,
+    'reg': 174,
+    'nbsp': 160,
+    'iexcl': 161,
+    'cent': 162,
+    'pound': 163,
+    'curren': 164,
+    'yen': 165,
+    'brvbar': 166,
+    'sect': 167,
+    'uml': 168,
+    'ordf': 170,
+    'laquo': 171,
+    'not': 172,
+    'shy': 173,
+    'macr': 175,
+    'deg': 176,
+    'plusmn': 177,
+    'sup1': 185,
+    'sup2': 178,
+    'sup3': 179,
+    'acute': 180,
+    'micro': 181,
+    'para': 182,
+    'middot': 183,
+    'cedil': 184,
+    'ordm': 186,
+    'raquo': 187,
+    'frac14': 188,
+    'frac12': 189,
+    'frac34': 190,
+    'iquest': 191,
+    'times': 215,
+    'divide': 247,
+    'OElig': 338,
+    'oelig': 339,
+    'Scaron': 352,
+    'scaron': 353,
+    'Yuml': 376,
+    'fnof': 402,
+    'circ': 710,
+    'tilde': 732,
+    'Alpha': 913,
+    'Beta': 914,
+    'Gamma': 915,
+    'Delta': 916,
+    'Epsilon': 917,
+    'Zeta': 918,
+    'Eta': 919,
+    'Theta': 920,
+    'Iota': 921,
+    'Kappa': 922,
+    'Lambda': 923,
+    'Mu': 924,
+    'Nu': 925,
+    'Xi': 926,
+    'Omicron': 927,
+    'Pi': 928,
+    'Rho': 929,
+    'Sigma': 931,
+    'Tau': 932,
+    'Upsilon': 933,
+    'Phi': 934,
+    'Chi': 935,
+    'Psi': 936,
+    'Omega': 937,
+    'alpha': 945,
+    'beta': 946,
+    'gamma': 947,
+    'delta': 948,
+    'epsilon': 949,
+    'zeta': 950,
+    'eta': 951,
+    'theta': 952,
+    'iota': 953,
+    'kappa': 954,
+    'lambda': 955,
+    'mu': 956,
+    'nu': 957,
+    'xi': 958,
+    'omicron': 959,
+    'pi': 960,
+    'rho': 961,
+    'sigmaf': 962,
+    'sigma': 963,
+    'tau': 964,
+    'upsilon': 965,
+    'phi': 966,
+    'chi': 967,
+    'psi': 968,
+    'omega': 969,
+    'thetasym': 977,
+    'upsih': 978,
+    'piv': 982,
+    'ensp': 8194,
+    'emsp': 8195,
+    'thinsp': 8201,
+    'zwnj': 8204,
+    'zwj': 8205,
+    'lrm': 8206,
+    'rlm': 8207,
+    'ndash': 8211,
+    'mdash': 8212,
+    'lsquo': 8216,
+    'rsquo': 8217,
+    'sbquo': 8218,
+    'ldquo': 8220,
+    'rdquo': 8221,
+    'bdquo': 8222,
+    'dagger': 8224,
+    'Dagger': 8225,
+    'bull': 8226,
+    'hellip': 8230,
+    'permil': 8240,
+    'prime': 8242,
+    'Prime': 8243,
+    'lsaquo': 8249,
+    'rsaquo': 8250,
+    'oline': 8254,
+    'frasl': 8260,
+    'euro': 8364,
+    'image': 8465,
+    'weierp': 8472,
+    'real': 8476,
+    'trade': 8482,
+    'alefsym': 8501,
+    'larr': 8592,
+    'uarr': 8593,
+    'rarr': 8594,
+    'darr': 8595,
+    'harr': 8596,
+    'crarr': 8629,
+    'lArr': 8656,
+    'uArr': 8657,
+    'rArr': 8658,
+    'dArr': 8659,
+    'hArr': 8660,
+    'forall': 8704,
+    'part': 8706,
+    'exist': 8707,
+    'empty': 8709,
+    'nabla': 8711,
+    'isin': 8712,
+    'notin': 8713,
+    'ni': 8715,
+    'prod': 8719,
+    'sum': 8721,
+    'minus': 8722,
+    'lowast': 8727,
+    'radic': 8730,
+    'prop': 8733,
+    'infin': 8734,
+    'ang': 8736,
+    'and': 8743,
+    'or': 8744,
+    'cap': 8745,
+    'cup': 8746,
+    'int': 8747,
+    'there4': 8756,
+    'sim': 8764,
+    'cong': 8773,
+    'asymp': 8776,
+    'ne': 8800,
+    'equiv': 8801,
+    'le': 8804,
+    'ge': 8805,
+    'sub': 8834,
+    'sup': 8835,
+    'nsub': 8836,
+    'sube': 8838,
+    'supe': 8839,
+    'oplus': 8853,
+    'otimes': 8855,
+    'perp': 8869,
+    'sdot': 8901,
+    'lceil': 8968,
+    'rceil': 8969,
+    'lfloor': 8970,
+    'rfloor': 8971,
+    'lang': 9001,
+    'rang': 9002,
+    'loz': 9674,
+    'spades': 9824,
+    'clubs': 9827,
+    'hearts': 9829,
+    'diams': 9830
+  }
+
+  Object.keys(sax.ENTITIES).forEach(function (key) {
     var e = sax.ENTITIES[key]
     var s = typeof e === 'number' ? String.fromCharCode(e) : e
     sax.ENTITIES[key] = s
-})
-
-for (var S in sax.STATE) sax.STATE[sax.STATE[S]] = S
-
-// shorthand
-S = sax.STATE
-
-function emit (parser, event, data) {
-  parser[event] && parser[event](data)
-}
-
-function emitNode (parser, nodeType, data) {
-  if (parser.textNode) closeText(parser)
-  emit(parser, nodeType, data)
-}
-
-function closeText (parser) {
-  parser.textNode = textopts(parser.opt, parser.textNode)
-  if (parser.textNode) emit(parser, "ontext", parser.textNode)
-  parser.textNode = ""
-}
-
-function textopts (opt, text) {
-  if (opt.trim) text = text.trim()
-  if (opt.normalize) text = text.replace(/\s+/g, " ")
-  return text
-}
-
-function error (parser, er) {
-  closeText(parser)
-  if (parser.trackPosition) {
-    er += "\nLine: "+parser.line+
-          "\nColumn: "+parser.column+
-          "\nChar: "+parser.c
+  })
+
+  for (var s in sax.STATE) {
+    sax.STATE[sax.STATE[s]] = s
   }
-  er = new Error(er)
-  parser.error = er
-  emit(parser, "onerror", er)
-  return parser
-}
-
-function end (parser) {
-  if (!parser.closedRoot) strictFail(parser, "Unclosed root tag")
-  if ((parser.state !== S.BEGIN) && (parser.state !== S.TEXT)) error(parser, "Unexpected end")
-  closeText(parser)
-  parser.c = ""
-  parser.closed = true
-  emit(parser, "onend")
-  SAXParser.call(parser, parser.strict, parser.opt)
-  return parser
-}
-
-function strictFail (parser, message) {
-  if (typeof parser !== 'object' || !(parser instanceof SAXParser))
-    throw new Error('bad call to strictFail');
-  if (parser.strict) error(parser, message)
-}
-
-function newTag (parser) {
-  if (!parser.strict) parser.tagName = parser.tagName[parser.looseCase]()
-  var parent = parser.tags[parser.tags.length - 1] || parser
-    , tag = parser.tag = { name : parser.tagName, attributes : {} }
-
-  // will be overridden if tag contails an xmlns="foo" or xmlns:foo="bar"
-  if (parser.opt.xmlns) tag.ns = parent.ns
-  parser.attribList.length = 0
-}
-
-function qname (name, attribute) {
-  var i = name.indexOf(":")
-    , qualName = i < 0 ? [ "", name ] : name.split(":")
-    , prefix = qualName[0]
-    , local = qualName[1]
-
-  // <x "xmlns"="http://foo">
-  if (attribute && name === "xmlns") {
-    prefix = "xmlns"
-    local = ""
+
+  // shorthand
+  S = sax.STATE
+
+  function emit (parser, event, data) {
+    parser[event] && parser[event](data)
   }
 
-  return { prefix: prefix, local: local }
-}
+  function emitNode (parser, nodeType, data) {
+    if (parser.textNode) closeText(parser)
+    emit(parser, nodeType, data)
+  }
 
-function attrib (parser) {
-  if (!parser.strict) parser.attribName = parser.attribName[parser.looseCase]()
+  function closeText (parser) {
+    parser.textNode = textopts(parser.opt, parser.textNode)
+    if (parser.textNode) emit(parser, 'ontext', parser.textNode)
+    parser.textNode = ''
+  }
 
-  if (parser.attribList.indexOf(parser.attribName) !== -1 ||
-      parser.tag.attributes.hasOwnProperty(parser.attribName)) {
-    return parser.attribName = parser.attribValue = ""
+  function textopts (opt, text) {
+    if (opt.trim) text = text.trim()
+    if (opt.normalize) text = text.replace(/\s+/g, ' ')
+    return text
   }
 
-  if (parser.opt.xmlns) {
-    var qn = qname(parser.attribName, true)
-      , prefix = qn.prefix
-      , local = qn.local
-
-    if (prefix === "xmlns") {
-      // namespace binding attribute; push the binding into scope
-      if (local === "xml" && parser.attribValue !== XML_NAMESPACE) {
-        strictFail( parser
-                  , "xml: prefix must be bound to " + XML_NAMESPACE + "\n"
-                  + "Actual: " + parser.attribValue )
-      } else if (local === "xmlns" && parser.attribValue !== XMLNS_NAMESPACE) {
-        strictFail( parser
-                  , "xmlns: prefix must be bound to " + XMLNS_NAMESPACE + "\n"
-                  + "Actual: " + parser.attribValue )
-      } else {
-        var tag = parser.tag
-          , parent = parser.tags[parser.tags.length - 1] || parser
-        if (tag.ns === parent.ns) {
-          tag.ns = Object.create(parent.ns)
-        }
-        tag.ns[local] = parser.attribValue
-      }
+  function error (parser, er) {
+    closeText(parser)
+    if (parser.trackPosition) {
+      er += '\nLine: ' + parser.line +
+        '\nColumn: ' + parser.column +
+        '\nChar: ' + parser.c
     }
+    er = new Error(er)
+    parser.error = er
+    emit(parser, 'onerror', er)
+    return parser
+  }
 
-    // defer onattribute events until all attributes have been seen
-    // so any new bindings can take effect; preserve attribute order
-    // so deferred events can be emitted in document order
-    parser.attribList.push([parser.attribName, parser.attribValue])
-  } else {
-    // in non-xmlns mode, we can emit the event right away
-    parser.tag.attributes[parser.attribName] = parser.attribValue
-    emitNode( parser
-            , "onattribute"
-            , { name: parser.attribName
-              , value: parser.attribValue } )
+  function end (parser) {
+    if (parser.sawRoot && !parser.closedRoot) strictFail(parser, 'Unclosed root tag')
+    if ((parser.state !== S.BEGIN) &&
+      (parser.state !== S.BEGIN_WHITESPACE) &&
+      (parser.state !== S.TEXT)) {
+      error(parser, 'Unexpected end')
+    }
+    closeText(parser)
+    parser.c = ''
+    parser.closed = true
+    emit(parser, 'onend')
+    SAXParser.call(parser, parser.strict, parser.opt)
+    return parser
   }
 
-  parser.attribName = parser.attribValue = ""
-}
+  function strictFail (parser, message) {
+    if (typeof parser !== 'object' || !(parser instanceof SAXParser)) {
+      throw new Error('bad call to strictFail')
+    }
+    if (parser.strict) {
+      error(parser, message)
+    }
+  }
 
-function openTag (parser, selfClosing) {
-  if (parser.opt.xmlns) {
-    // emit namespace binding events
-    var tag = parser.tag
+  function newTag (parser) {
+    if (!parser.strict) parser.tagName = parser.tagName[parser.looseCase]()
+    var parent = parser.tags[parser.tags.length - 1] || parser
+    var tag = parser.tag = { name: parser.tagName, attributes: {} }
+
+    // will be overridden if tag contails an xmlns="foo" or xmlns:foo="bar"
+    if (parser.opt.xmlns) {
+      tag.ns = parent.ns
+    }
+    parser.attribList.length = 0
+    emitNode(parser, 'onopentagstart', tag)
+  }
 
-    // add namespace info to tag
-    var qn = qname(parser.tagName)
-    tag.prefix = qn.prefix
-    tag.local = qn.local
-    tag.uri = tag.ns[qn.prefix] || ""
+  function qname (name, attribute) {
+    var i = name.indexOf(':')
+    var qualName = i < 0 ? [ '', name ] : name.split(':')
+    var prefix = qualName[0]
+    var local = qualName[1]
 
-    if (tag.prefix && !tag.uri) {
-      strictFail(parser, "Unbound namespace prefix: "
-                       + JSON.stringify(parser.tagName))
-      tag.uri = qn.prefix
+    // <x "xmlns"="http://foo">
+    if (attribute && name === 'xmlns') {
+      prefix = 'xmlns'
+      local = ''
     }
 
-    var parent = parser.tags[parser.tags.length - 1] || parser
-    if (tag.ns && parent.ns !== tag.ns) {
-      Object.keys(tag.ns).forEach(function (p) {
-        emitNode( parser
-                , "onopennamespace"
-                , { prefix: p , uri: tag.ns[p] } )
-      })
+    return { prefix: prefix, local: local }
+  }
+
+  function attrib (parser) {
+    if (!parser.strict) {
+      parser.attribName = parser.attribName[parser.looseCase]()
     }
 
-    // handle deferred onattribute events
-    // Note: do not apply default ns to attributes:
-    //   http://www.w3.org/TR/REC-xml-names/#defaulting
-    for (var i = 0, l = parser.attribList.length; i < l; i ++) {
-      var nv = parser.attribList[i]
-      var name = nv[0]
-        , value = nv[1]
-        , qualName = qname(name, true)
-        , prefix = qualName.prefix
-        , local = qualName.local
-        , uri = prefix == "" ? "" : (tag.ns[prefix] || "")
-        , a = { name: name
-              , value: value
-              , prefix: prefix
-              , local: local
-              , uri: uri
-              }
+    if (parser.attribList.indexOf(parser.attribName) !== -1 ||
+      parser.tag.attributes.hasOwnProperty(parser.attribName)) {
+      parser.attribName = parser.attribValue = ''
+      return
+    }
 
-      // if there's any attributes with an undefined namespace,
-      // then fail on them now.
-      if (prefix && prefix != "xmlns" && !uri) {
-        strictFail(parser, "Unbound namespace prefix: "
-                         + JSON.stringify(prefix))
-        a.uri = prefix
+    if (parser.opt.xmlns) {
+      var qn = qname(parser.attribName, true)
+      var prefix = qn.prefix
+      var local = qn.local
+
+      if (prefix === 'xmlns') {
+        // namespace binding attribute. push the binding into scope
+        if (local === 'xml' && parser.attribValue !== XML_NAMESPACE) {
+          strictFail(parser,
+            'xml: prefix must be bound to ' + XML_NAMESPACE + '\n' +
+            'Actual: ' + parser.attribValue)
+        } else if (local === 'xmlns' && parser.attribValue !== XMLNS_NAMESPACE) {
+          strictFail(parser,
+            'xmlns: prefix must be bound to ' + XMLNS_NAMESPACE + '\n' +
+            'Actual: ' + parser.attribValue)
+        } else {
+          var tag = parser.tag
+          var parent = parser.tags[parser.tags.length - 1] || parser
+          if (tag.ns === parent.ns) {
+            tag.ns = Object.create(parent.ns)
+          }
+          tag.ns[local] = parser.attribValue
+        }
       }
-      parser.tag.attributes[name] = a
-      emitNode(parser, "onattribute", a)
+
+      // defer onattribute events until all attributes have been seen
+      // so any new bindings can take effect. preserve attribute order
+      // so deferred events can be emitted in document order
+      parser.attribList.push([parser.attribName, parser.attribValue])
+    } else {
+      // in non-xmlns mode, we can emit the event right away
+      parser.tag.attributes[parser.attribName] = parser.attribValue
+      emitNode(parser, 'onattribute', {
+        name: parser.attribName,
+        value: parser.attribValue
+      })
     }
-    parser.attribList.length = 0
+
+    parser.attribName = parser.attribValue = ''
   }
 
-  parser.tag.isSelfClosing = !!selfClosing
+  function openTag (parser, selfClosing) {
+    if (parser.opt.xmlns) {
+      // emit namespace binding events
+      var tag = parser.tag
+
+      // add namespace info to tag
+      var qn = qname(parser.tagName)
+      tag.prefix = qn.prefix
+      tag.local = qn.local
+      tag.uri = tag.ns[qn.prefix] || ''
+
+      if (tag.prefix && !tag.uri) {
+        strictFail(parser, 'Unbound namespace prefix: ' +
+          JSON.stringify(parser.tagName))
+        tag.uri = qn.prefix
+      }
 
-  // process the tag
-  parser.sawRoot = true
-  parser.tags.push(parser.tag)
-  emitNode(parser, "onopentag", parser.tag)
-  if (!selfClosing) {
-    // special case for <script> in non-strict mode.
-    if (!parser.noscript && parser.tagName.toLowerCase() === "script") {
-      parser.state = S.SCRIPT
-    } else {
-      parser.state = S.TEXT
+      var parent = parser.tags[parser.tags.length - 1] || parser
+      if (tag.ns && parent.ns !== tag.ns) {
+        Object.keys(tag.ns).forEach(function (p) {
+          emitNode(parser, 'onopennamespace', {
+            prefix: p,
+            uri: tag.ns[p]
+          })
+        })
+      }
+
+      // handle deferred onattribute events
+      // Note: do not apply default ns to attributes:
+      //   http://www.w3.org/TR/REC-xml-names/#defaulting
+      for (var i = 0, l = parser.attribList.length; i < l; i++) {
+        var nv = parser.attribList[i]
+        var name = nv[0]
+        var value = nv[1]
+        var qualName = qname(name, true)
+        var prefix = qualName.prefix
+        var local = qualName.local
+        var uri = prefix === '' ? '' : (tag.ns[prefix] || '')
+        var a = {
+          name: name,
+          value: value,
+          prefix: prefix,
+          local: local,
+          uri: uri
+        }
+
+        // if there's any attributes with an undefined namespace,
+        // then fail on them now.
+        if (prefix && prefix !== 'xmlns' && !uri) {
+          strictFail(parser, 'Unbound namespace prefix: ' +
+            JSON.stringify(prefix))
+          a.uri = prefix
+        }
+        parser.tag.attributes[name] = a
+        emitNode(parser, 'onattribute', a)
+      }
+      parser.attribList.length = 0
     }
-    parser.tag = null
-    parser.tagName = ""
-  }
-  parser.attribName = parser.attribValue = ""
-  parser.attribList.length = 0
-}
-
-function closeTag (parser) {
-  if (!parser.tagName) {
-    strictFail(parser, "Weird empty close tag.")
-    parser.textNode += "</>"
-    parser.state = S.TEXT
-    return
+
+    parser.tag.isSelfClosing = !!selfClosing
+
+    // process the tag
+    parser.sawRoot = true
+    parser.tags.push(parser.tag)
+    emitNode(parser, 'onopentag', parser.tag)
+    if (!selfClosing) {
+      // special case for <script> in non-strict mode.
+      if (!parser.noscript && parser.tagName.toLowerCase() === 'script') {
+        parser.state = S.SCRIPT
+      } else {
+        parser.state = S.TEXT
+      }
+      parser.tag = null
+      parser.tagName = ''
+    }
+    parser.attribName = parser.attribValue = ''
+    parser.attribList.length = 0
   }
 
-  if (parser.script) {
-    if (parser.tagName !== "script") {
-      parser.script += "</" + parser.tagName + ">"
-      parser.tagName = ""
-      parser.state = S.SCRIPT
+  function closeTag (parser) {
+    if (!parser.tagName) {
+      strictFail(parser, 'Weird empty close tag.')
+      parser.textNode += '</>'
+      parser.state = S.TEXT
       return
     }
-    emitNode(parser, "onscript", parser.script)
-    parser.script = ""
-  }
 
-  // first make sure that the closing tag actually exists.
-  // <a><b></c></b></a> will close everything, otherwise.
-  var t = parser.tags.length
-  var tagName = parser.tagName
-  if (!parser.strict) tagName = tagName[parser.looseCase]()
-  var closeTo = tagName
-  while (t --) {
-    var close = parser.tags[t]
-    if (close.name !== closeTo) {
-      // fail the first time in strict mode
-      strictFail(parser, "Unexpected close tag")
-    } else break
-  }
+    if (parser.script) {
+      if (parser.tagName !== 'script') {
+        parser.script += '</' + parser.tagName + '>'
+        parser.tagName = ''
+        parser.state = S.SCRIPT
+        return
+      }
+      emitNode(parser, 'onscript', parser.script)
+      parser.script = ''
+    }
+
+    // first make sure that the closing tag actually exists.
+    // <a><b></c></b></a> will close everything, otherwise.
+    var t = parser.tags.length
+    var tagName = parser.tagName
+    if (!parser.strict) {
+      tagName = tagName[parser.looseCase]()
+    }
+    var closeTo = tagName
+    while (t--) {
+      var close = parser.tags[t]
+      if (close.name !== closeTo) {
+        // fail the first time in strict mode
+        strictFail(parser, 'Unexpected close tag')
+      } else {
+        break
+      }
+    }
 
-  // didn't find it.  we already failed for strict, so just abort.
-  if (t < 0) {
-    strictFail(parser, "Unmatched closing tag: "+parser.tagName)
-    parser.textNode += "</" + parser.tagName + ">"
+    // didn't find it.  we already failed for strict, so just abort.
+    if (t < 0) {
+      strictFail(parser, 'Unmatched closing tag: ' + parser.tagName)
+      parser.textNode += '</' + parser.tagName + '>'
+      parser.state = S.TEXT
+      return
+    }
+    parser.tagName = tagName
+    var s = parser.tags.length
+    while (s-- > t) {
+      var tag = parser.tag = parser.tags.pop()
+      parser.tagName = parser.tag.name
+      emitNode(parser, 'onclosetag', parser.tagName)
+
+      var x = {}
+      for (var i in tag.ns) {
+        x[i] = tag.ns[i]
+      }
+
+      var parent = parser.tags[parser.tags.length - 1] || parser
+      if (parser.opt.xmlns && tag.ns !== parent.ns) {
+        // remove namespace bindings introduced by tag
+        Object.keys(tag.ns).forEach(function (p) {
+          var n = tag.ns[p]
+          emitNode(parser, 'onclosenamespace', { prefix: p, uri: n })
+        })
+      }
+    }
+    if (t === 0) parser.closedRoot = true
+    parser.tagName = parser.attribValue = parser.attribName = ''
+    parser.attribList.length = 0
     parser.state = S.TEXT
-    return
   }
-  parser.tagName = tagName
-  var s = parser.tags.length
-  while (s --> t) {
-    var tag = parser.tag = parser.tags.pop()
-    parser.tagName = parser.tag.name
-    emitNode(parser, "onclosetag", parser.tagName)
 
-    var x = {}
-    for (var i in tag.ns) x[i] = tag.ns[i]
+  function parseEntity (parser) {
+    var entity = parser.entity
+    var entityLC = entity.toLowerCase()
+    var num
+    var numStr = ''
 
-    var parent = parser.tags[parser.tags.length - 1] || parser
-    if (parser.opt.xmlns && tag.ns !== parent.ns) {
-      // remove namespace bindings introduced by tag
-      Object.keys(tag.ns).forEach(function (p) {
-        var n = tag.ns[p]
-        emitNode(parser, "onclosenamespace", { prefix: p, uri: n })
-      })
+    if (parser.ENTITIES[entity]) {
+      return parser.ENTITIES[entity]
+    }
+    if (parser.ENTITIES[entityLC]) {
+      return parser.ENTITIES[entityLC]
+    }
+    entity = entityLC
+    if (entity.charAt(0) === '#') {
+      if (entity.charAt(1) === 'x') {
+        entity = entity.slice(2)
+        num = parseInt(entity, 16)
+        numStr = num.toString(16)
+      } else {
+        entity = entity.slice(1)
+        num = parseInt(entity, 10)
+        numStr = num.toString(10)
+      }
     }
+    entity = entity.replace(/^0+/, '')
+    if (numStr.toLowerCase() !== entity) {
+      strictFail(parser, 'Invalid character entity')
+      return '&' + parser.entity + ';'
+    }
+
+    return String.fromCodePoint(num)
   }
-  if (t === 0) parser.closedRoot = true
-  parser.tagName = parser.attribValue = parser.attribName = ""
-  parser.attribList.length = 0
-  parser.state = S.TEXT
-}
-
-function parseEntity (parser) {
-  var entity = parser.entity
-    , entityLC = entity.toLowerCase()
-    , num
-    , numStr = ""
-  if (parser.ENTITIES[entity])
-    return parser.ENTITIES[entity]
-  if (parser.ENTITIES[entityLC])
-    return parser.ENTITIES[entityLC]
-  entity = entityLC
-  if (entity.charAt(0) === "#") {
-    if (entity.charAt(1) === "x") {
-      entity = entity.slice(2)
-      num = parseInt(entity, 16)
-      numStr = num.toString(16)
-    } else {
-      entity = entity.slice(1)
-      num = parseInt(entity, 10)
-      numStr = num.toString(10)
+
+  function beginWhiteSpace (parser, c) {
+    if (c === '<') {
+      parser.state = S.OPEN_WAKA
+      parser.startTagPosition = parser.position
+    } else if (not(whitespace, c)) {
+      // have to process this as a text node.
+      // weird, but happens.
+      strictFail(parser, 'Non-whitespace before first tag.')
+      parser.textNode = c
+      parser.state = S.TEXT
     }
   }
-  entity = entity.replace(/^0+/, "")
-  if (numStr.toLowerCase() !== entity) {
-    strictFail(parser, "Invalid character entity")
-    return "&"+parser.entity + ";"
+
+  function charAt (chunk, i) {
+    var result = ''
+    if (i < chunk.length) {
+      result = chunk.charAt(i)
+    }
+    return result
   }
 
-  return String.fromCodePoint(num)
-}
-
-function write (chunk) {
-  var parser = this
-  if (this.error) throw this.error
-  if (parser.closed) return error(parser,
-    "Cannot write after close. Assign an onready handler.")
-  if (chunk === null) return end(parser)
-  var i = 0, c = ""
-  while (parser.c = c = chunk.charAt(i++)) {
-    if (parser.trackPosition) {
-      parser.position ++
-      if (c === "\n") {
-        parser.line ++
-        parser.column = 0
-      } else parser.column ++
+  function write (chunk) {
+    var parser = this
+    if (this.error) {
+      throw this.error
+    }
+    if (parser.closed) {
+      return error(parser,
+        'Cannot write after close. Assign an onready handler.')
+    }
+    if (chunk === null) {
+      return end(parser)
+    }
+    if (typeof chunk === 'object') {
+      chunk = chunk.toString()
     }
-    switch (parser.state) {
-
-      case S.BEGIN:
-        if (c === "<") {
-          parser.state = S.OPEN_WAKA
-          parser.startTagPosition = parser.position
-        } else if (not(whitespace,c)) {
-          // have to process this as a text node.
-          // weird, but happens.
-          strictFail(parser, "Non-whitespace before first tag.")
-          parser.textNode = c
-          parser.state = S.TEXT
+    var i = 0
+    var c = ''
+    while (true) {
+      c = charAt(chunk, i++)
+      parser.c = c
+      if (!c) {
+        break
+      }
+      if (parser.trackPosition) {
+        parser.position++
+        if (c === '\n') {
+          parser.line++
+          parser.column = 0
+        } else {
+          parser.column++
         }
-      continue
-
-      case S.TEXT:
-        if (parser.sawRoot && !parser.closedRoot) {
-          var starti = i-1
-          while (c && c!=="<" && c!=="&") {
-            c = chunk.charAt(i++)
-            if (c && parser.trackPosition) {
-              parser.position ++
-              if (c === "\n") {
-                parser.line ++
-                parser.column = 0
-              } else parser.column ++
+      }
+      switch (parser.state) {
+        case S.BEGIN:
+          parser.state = S.BEGIN_WHITESPACE
+          if (c === '\uFEFF') {
+            continue
+          }
+          beginWhiteSpace(parser, c)
+          continue
+
+        case S.BEGIN_WHITESPACE:
+          beginWhiteSpace(parser, c)
+          continue
+
+        case S.TEXT:
+          if (parser.sawRoot && !parser.closedRoot) {
+            var starti = i - 1
+            while (c && c !== '<' && c !== '&') {
+              c = charAt(chunk, i++)
+              if (c && parser.trackPosition) {
+                parser.position++
+                if (c === '\n') {
+                  parser.line++
+                  parser.column = 0
+                } else {
+                  parser.column++
+                }
+              }
             }
+            parser.textNode += chunk.substring(starti, i - 1)
           }
-          parser.textNode += chunk.substring(starti, i-1)
-        }
-        if (c === "<") {
-          parser.state = S.OPEN_WAKA
-          parser.startTagPosition = parser.position
-        } else {
-          if (not(whitespace, c) && (!parser.sawRoot || parser.closedRoot))
-            strictFail(parser, "Text data outside of root node.")
-          if (c === "&") parser.state = S.TEXT_ENTITY
-          else parser.textNode += c
-        }
-      continue
-
-      case S.SCRIPT:
-        // only non-strict
-        if (c === "<") {
-          parser.state = S.SCRIPT_ENDING
-        } else parser.script += c
-      continue
-
-      case S.SCRIPT_ENDING:
-        if (c === "/") {
-          parser.state = S.CLOSE_TAG
-        } else {
-          parser.script += "<" + c
-          parser.state = S.SCRIPT
-        }
-      continue
-
-      case S.OPEN_WAKA:
-        // either a /, ?, !, or text is coming next.
-        if (c === "!") {
-          parser.state = S.SGML_DECL
-          parser.sgmlDecl = ""
-        } else if (is(whitespace, c)) {
-          // wait for it...
-        } else if (is(nameStart,c)) {
-          parser.state = S.OPEN_TAG
-          parser.tagName = c
-        } else if (c === "/") {
-          parser.state = S.CLOSE_TAG
-          parser.tagName = ""
-        } else if (c === "?") {
-          parser.state = S.PROC_INST
-          parser.procInstName = parser.procInstBody = ""
-        } else {
-          strictFail(parser, "Unencoded <")
-          // if there was some whitespace, then add that in.
-          if (parser.startTagPosition + 1 < parser.position) {
-            var pad = parser.position - parser.startTagPosition
-            c = new Array(pad).join(" ") + c
+          if (c === '<' && !(parser.sawRoot && parser.closedRoot && !parser.strict)) {
+            parser.state = S.OPEN_WAKA
+            parser.startTagPosition = parser.position
+          } else {
+            if (not(whitespace, c) && (!parser.sawRoot || parser.closedRoot)) {
+              strictFail(parser, 'Text data outside of root node.')
+            }
+            if (c === '&') {
+              parser.state = S.TEXT_ENTITY
+            } else {
+              parser.textNode += c
+            }
+          }
+          continue
+
+        case S.SCRIPT:
+          // only non-strict
+          if (c === '<') {
+            parser.state = S.SCRIPT_ENDING
+          } else {
+            parser.script += c
+          }
+          continue
+
+        case S.SCRIPT_ENDING:
+          if (c === '/') {
+            parser.state = S.CLOSE_TAG
+          } else {
+            parser.script += '<' + c
+            parser.state = S.SCRIPT
+          }
+          continue
+
+        case S.OPEN_WAKA:
+          // either a /, ?, !, or text is coming next.
+          if (c === '!') {
+            parser.state = S.SGML_DECL
+            parser.sgmlDecl = ''
+          } else if (is(whitespace, c)) {
+            // wait for it...
+          } else if (is(nameStart, c)) {
+            parser.state = S.OPEN_TAG
+            parser.tagName = c
+          } else if (c === '/') {
+            parser.state = S.CLOSE_TAG
+            parser.tagName = ''
+          } else if (c === '?') {
+            parser.state = S.PROC_INST
+            parser.procInstName = parser.procInstBody = ''
+          } else {
+            strictFail(parser, 'Unencoded <')
+            // if there was some whitespace, then add that in.
+            if (parser.startTagPosition + 1 < parser.position) {
+              var pad = parser.position - parser.startTagPosition
+              c = new Array(pad).join(' ') + c
+            }
+            parser.textNode += '<' + c
+            parser.state = S.TEXT
+          }
+          continue
+
+        case S.SGML_DECL:
+          if ((parser.sgmlDecl + c).toUpperCase() === CDATA) {
+            emitNode(parser, 'onopencdata')
+            parser.state = S.CDATA
+            parser.sgmlDecl = ''
+            parser.cdata = ''
+          } else if (parser.sgmlDecl + c === '--') {
+            parser.state = S.COMMENT
+            parser.comment = ''
+            parser.sgmlDecl = ''
+          } else if ((parser.sgmlDecl + c).toUpperCase() === DOCTYPE) {
+            parser.state = S.DOCTYPE
+            if (parser.doctype || parser.sawRoot) {
+              strictFail(parser,
+                'Inappropriately located doctype declaration')
+            }
+            parser.doctype = ''
+            parser.sgmlDecl = ''
+          } else if (c === '>') {
+            emitNode(parser, 'onsgmldeclaration', parser.sgmlDecl)
+            parser.sgmlDecl = ''
+            parser.state = S.TEXT
+          } else if (is(quote, c)) {
+            parser.state = S.SGML_DECL_QUOTED
+            parser.sgmlDecl += c
+          } else {
+            parser.sgmlDecl += c
+          }
+          continue
+
+        case S.SGML_DECL_QUOTED:
+          if (c === parser.q) {
+            parser.state = S.SGML_DECL
+            parser.q = ''
           }
-          parser.textNode += "<" + c
-          parser.state = S.TEXT
-        }
-      continue
-
-      case S.SGML_DECL:
-        if ((parser.sgmlDecl+c).toUpperCase() === CDATA) {
-          emitNode(parser, "onopencdata")
-          parser.state = S.CDATA
-          parser.sgmlDecl = ""
-          parser.cdata = ""
-        } else if (parser.sgmlDecl+c === "--") {
-          parser.state = S.COMMENT
-          parser.comment = ""
-          parser.sgmlDecl = ""
-        } else if ((parser.sgmlDecl+c).toUpperCase() === DOCTYPE) {
-          parser.state = S.DOCTYPE
-          if (parser.doctype || parser.sawRoot) strictFail(parser,
-            "Inappropriately located doctype declaration")
-          parser.doctype = ""
-          parser.sgmlDecl = ""
-        } else if (c === ">") {
-          emitNode(parser, "onsgmldeclaration", parser.sgmlDecl)
-          parser.sgmlDecl = ""
-          parser.state = S.TEXT
-        } else if (is(quote, c)) {
-          parser.state = S.SGML_DECL_QUOTED
           parser.sgmlDecl += c
-        } else parser.sgmlDecl += c
-      continue
+          continue
 
-      case S.SGML_DECL_QUOTED:
-        if (c === parser.q) {
-          parser.state = S.SGML_DECL
-          parser.q = ""
-        }
-        parser.sgmlDecl += c
-      continue
-
-      case S.DOCTYPE:
-        if (c === ">") {
-          parser.state = S.TEXT
-          emitNode(parser, "ondoctype", parser.doctype)
-          parser.doctype = true // just remember that we saw it.
-        } else {
+        case S.DOCTYPE:
+          if (c === '>') {
+            parser.state = S.TEXT
+            emitNode(parser, 'ondoctype', parser.doctype)
+            parser.doctype = true // just remember that we saw it.
+          } else {
+            parser.doctype += c
+            if (c === '[') {
+              parser.state = S.DOCTYPE_DTD
+            } else if (is(quote, c)) {
+              parser.state = S.DOCTYPE_QUOTED
+              parser.q = c
+            }
+          }
+          continue
+
+        case S.DOCTYPE_QUOTED:
           parser.doctype += c
-          if (c === "[") parser.state = S.DOCTYPE_DTD
-          else if (is(quote, c)) {
-            parser.state = S.DOCTYPE_QUOTED
+          if (c === parser.q) {
+            parser.q = ''
+            parser.state = S.DOCTYPE
+          }
+          continue
+
+        case S.DOCTYPE_DTD:
+          parser.doctype += c
+          if (c === ']') {
+            parser.state = S.DOCTYPE
+          } else if (is(quote, c)) {
+            parser.state = S.DOCTYPE_DTD_QUOTED
             parser.q = c
           }
-        }
-      continue
+          continue
 
-      case S.DOCTYPE_QUOTED:
-        parser.doctype += c
-        if (c === parser.q) {
-          parser.q = ""
-          parser.state = S.DOCTYPE
-        }
-      continue
-
-      case S.DOCTYPE_DTD:
-        parser.doctype += c
-        if (c === "]") parser.state = S.DOCTYPE
-        else if (is(quote,c)) {
-          parser.state = S.DOCTYPE_DTD_QUOTED
-          parser.q = c
-        }
-      continue
+        case S.DOCTYPE_DTD_QUOTED:
+          parser.doctype += c
+          if (c === parser.q) {
+            parser.state = S.DOCTYPE_DTD
+            parser.q = ''
+          }
+          continue
 
-      case S.DOCTYPE_DTD_QUOTED:
-        parser.doctype += c
-        if (c === parser.q) {
-          parser.state = S.DOCTYPE_DTD
-          parser.q = ""
-        }
-      continue
-
-      case S.COMMENT:
-        if (c === "-") parser.state = S.COMMENT_ENDING
-        else parser.comment += c
-      continue
-
-      case S.COMMENT_ENDING:
-        if (c === "-") {
-          parser.state = S.COMMENT_ENDED
-          parser.comment = textopts(parser.opt, parser.comment)
-          if (parser.comment) emitNode(parser, "oncomment", parser.comment)
-          parser.comment = ""
-        } else {
-          parser.comment += "-" + c
-          parser.state = S.COMMENT
-        }
-      continue
-
-      case S.COMMENT_ENDED:
-        if (c !== ">") {
-          strictFail(parser, "Malformed comment")
-          // allow <!-- blah -- bloo --> in non-strict mode,
-          // which is a comment of " blah -- bloo "
-          parser.comment += "--" + c
-          parser.state = S.COMMENT
-        } else parser.state = S.TEXT
-      continue
-
-      case S.CDATA:
-        if (c === "]") parser.state = S.CDATA_ENDING
-        else parser.cdata += c
-      continue
-
-      case S.CDATA_ENDING:
-        if (c === "]") parser.state = S.CDATA_ENDING_2
-        else {
-          parser.cdata += "]" + c
-          parser.state = S.CDATA
-        }
-      continue
-
-      case S.CDATA_ENDING_2:
-        if (c === ">") {
-          if (parser.cdata) emitNode(parser, "oncdata", parser.cdata)
-          emitNode(parser, "onclosecdata")
-          parser.cdata = ""
-          parser.state = S.TEXT
-        } else if (c === "]") {
-          parser.cdata += "]"
-        } else {
-          parser.cdata += "]]" + c
-          parser.state = S.CDATA
-        }
-      continue
-
-      case S.PROC_INST:
-        if (c === "?") parser.state = S.PROC_INST_ENDING
-        else if (is(whitespace, c)) parser.state = S.PROC_INST_BODY
-        else parser.procInstName += c
-      continue
-
-      case S.PROC_INST_BODY:
-        if (!parser.procInstBody && is(whitespace, c)) continue
-        else if (c === "?") parser.state = S.PROC_INST_ENDING
-        else parser.procInstBody += c
-      continue
-
-      case S.PROC_INST_ENDING:
-        if (c === ">") {
-          emitNode(parser, "onprocessinginstruction", {
-            name : parser.procInstName,
-            body : parser.procInstBody
-          })
-          parser.procInstName = parser.procInstBody = ""
-          parser.state = S.TEXT
-        } else {
-          parser.procInstBody += "?" + c
-          parser.state = S.PROC_INST_BODY
-        }
-      continue
-
-      case S.OPEN_TAG:
-        if (is(nameBody, c)) parser.tagName += c
-        else {
-          newTag(parser)
-          if (c === ">") openTag(parser)
-          else if (c === "/") parser.state = S.OPEN_TAG_SLASH
-          else {
-            if (not(whitespace, c)) strictFail(
-              parser, "Invalid character in tag name")
+        case S.COMMENT:
+          if (c === '-') {
+            parser.state = S.COMMENT_ENDING
+          } else {
+            parser.comment += c
+          }
+          continue
+
+        case S.COMMENT_ENDING:
+          if (c === '-') {
+            parser.state = S.COMMENT_ENDED
+            parser.comment = textopts(parser.opt, parser.comment)
+            if (parser.comment) {
+              emitNode(parser, 'oncomment', parser.comment)
+            }
+            parser.comment = ''
+          } else {
+            parser.comment += '-' + c
+            parser.state = S.COMMENT
+          }
+          continue
+
+        case S.COMMENT_ENDED:
+          if (c !== '>') {
+            strictFail(parser, 'Malformed comment')
+            // allow <!-- blah -- bloo --> in non-strict mode,
+            // which is a comment of " blah -- bloo "
+            parser.comment += '--' + c
+            parser.state = S.COMMENT
+          } else {
+            parser.state = S.TEXT
+          }
+          continue
+
+        case S.CDATA:
+          if (c === ']') {
+            parser.state = S.CDATA_ENDING
+          } else {
+            parser.cdata += c
+          }
+          continue
+
+        case S.CDATA_ENDING:
+          if (c === ']') {
+            parser.state = S.CDATA_ENDING_2
+          } else {
+            parser.cdata += ']' + c
+            parser.state = S.CDATA
+          }
+          continue
+
+        case S.CDATA_ENDING_2:
+          if (c === '>') {
+            if (parser.cdata) {
+              emitNode(parser, 'oncdata', parser.cdata)
+            }
+            emitNode(parser, 'onclosecdata')
+            parser.cdata = ''
+            parser.state = S.TEXT
+          } else if (c === ']') {
+            parser.cdata += ']'
+          } else {
+            parser.cdata += ']]' + c
+            parser.state = S.CDATA
+          }
+          continue
+
+        case S.PROC_INST:
+          if (c === '?') {
+            parser.state = S.PROC_INST_ENDING
+          } else if (is(whitespace, c)) {
+            parser.state = S.PROC_INST_BODY
+          } else {
+            parser.procInstName += c
+          }
+          continue
+
+        case S.PROC_INST_BODY:
+          if (!parser.procInstBody && is(whitespace, c)) {
+            continue
+          } else if (c === '?') {
+            parser.state = S.PROC_INST_ENDING
+          } else {
+            parser.procInstBody += c
+          }
+          continue
+
+        case S.PROC_INST_ENDING:
+          if (c === '>') {
+            emitNode(parser, 'onprocessinginstruction', {
+              name: parser.procInstName,
+              body: parser.procInstBody
+            })
+            parser.procInstName = parser.procInstBody = ''
+            parser.state = S.TEXT
+          } else {
+            parser.procInstBody += '?' + c
+            parser.state = S.PROC_INST_BODY
+          }
+          continue
+
+        case S.OPEN_TAG:
+          if (is(nameBody, c)) {
+            parser.tagName += c
+          } else {
+            newTag(parser)
+            if (c === '>') {
+              openTag(parser)
+            } else if (c === '/') {
+              parser.state = S.OPEN_TAG_SLASH
+            } else {
+              if (not(whitespace, c)) {
+                strictFail(parser, 'Invalid character in tag name')
+              }
+              parser.state = S.ATTRIB
+            }
+          }
+          continue
+
+        case S.OPEN_TAG_SLASH:
+          if (c === '>') {
+            openTag(parser, true)
+            closeTag(parser)
+          } else {
+            strictFail(parser, 'Forward-slash in opening tag not followed by >')
             parser.state = S.ATTRIB
           }
-        }
-      continue
+          continue
 
-      case S.OPEN_TAG_SLASH:
-        if (c === ">") {
-          openTag(parser, true)
-          closeTag(parser)
-        } else {
-          strictFail(parser, "Forward-slash in opening tag not followed by >")
-          parser.state = S.ATTRIB
-        }
-      continue
-
-      case S.ATTRIB:
-        // haven't read the attribute name yet.
-        if (is(whitespace, c)) continue
-        else if (c === ">") openTag(parser)
-        else if (c === "/") parser.state = S.OPEN_TAG_SLASH
-        else if (is(nameStart, c)) {
-          parser.attribName = c
-          parser.attribValue = ""
-          parser.state = S.ATTRIB_NAME
-        } else strictFail(parser, "Invalid attribute name")
-      continue
-
-      case S.ATTRIB_NAME:
-        if (c === "=") parser.state = S.ATTRIB_VALUE
-        else if (c === ">") {
-          strictFail(parser, "Attribute without value")
-          parser.attribValue = parser.attribName
-          attrib(parser)
-          openTag(parser)
-        }
-        else if (is(whitespace, c)) parser.state = S.ATTRIB_NAME_SAW_WHITE
-        else if (is(nameBody, c)) parser.attribName += c
-        else strictFail(parser, "Invalid attribute name")
-      continue
-
-      case S.ATTRIB_NAME_SAW_WHITE:
-        if (c === "=") parser.state = S.ATTRIB_VALUE
-        else if (is(whitespace, c)) continue
-        else {
-          strictFail(parser, "Attribute without value")
-          parser.tag.attributes[parser.attribName] = ""
-          parser.attribValue = ""
-          emitNode(parser, "onattribute",
-                   { name : parser.attribName, value : "" })
-          parser.attribName = ""
-          if (c === ">") openTag(parser)
-          else if (is(nameStart, c)) {
+        case S.ATTRIB:
+          // haven't read the attribute name yet.
+          if (is(whitespace, c)) {
+            continue
+          } else if (c === '>') {
+            openTag(parser)
+          } else if (c === '/') {
+            parser.state = S.OPEN_TAG_SLASH
+          } else if (is(nameStart, c)) {
             parser.attribName = c
+            parser.attribValue = ''
             parser.state = S.ATTRIB_NAME
           } else {
-            strictFail(parser, "Invalid attribute name")
-            parser.state = S.ATTRIB
+            strictFail(parser, 'Invalid attribute name')
           }
-        }
-      continue
+          continue
 
-      case S.ATTRIB_VALUE:
-        if (is(whitespace, c)) continue
-        else if (is(quote, c)) {
-          parser.q = c
-          parser.state = S.ATTRIB_VALUE_QUOTED
-        } else {
-          strictFail(parser, "Unquoted attribute value")
-          parser.state = S.ATTRIB_VALUE_UNQUOTED
-          parser.attribValue = c
-        }
-      continue
+        case S.ATTRIB_NAME:
+          if (c === '=') {
+            parser.state = S.ATTRIB_VALUE
+          } else if (c === '>') {
+            strictFail(parser, 'Attribute without value')
+            parser.attribValue = parser.attribName
+            attrib(parser)
+            openTag(parser)
+          } else if (is(whitespace, c)) {
+            parser.state = S.ATTRIB_NAME_SAW_WHITE
+          } else if (is(nameBody, c)) {
+            parser.attribName += c
+          } else {
+            strictFail(parser, 'Invalid attribute name')
+          }
+          continue
 
-      case S.ATTRIB_VALUE_QUOTED:
-        if (c !== parser.q) {
-          if (c === "&") parser.state = S.ATTRIB_VALUE_ENTITY_Q
-          else parser.attribValue += c
+        case S.ATTRIB_NAME_SAW_WHITE:
+          if (c === '=') {
+            parser.state = S.ATTRIB_VALUE
+          } else if (is(whitespace, c)) {
+            continue
+          } else {
+            strictFail(parser, 'Attribute without value')
+            parser.tag.attributes[parser.attribName] = ''
+            parser.attribValue = ''
+            emitNode(parser, 'onattribute', {
+              name: parser.attribName,
+              value: ''
+            })
+            parser.attribName = ''
+            if (c === '>') {
+              openTag(parser)
+            } else if (is(nameStart, c)) {
+              parser.attribName = c
+              parser.state = S.ATTRIB_NAME
+            } else {
+              strictFail(parser, 'Invalid attribute name')
+              parser.state = S.ATTRIB
+            }
+          }
           continue
-        }
-        attrib(parser)
-        parser.q = ""
-        parser.state = S.ATTRIB_VALUE_CLOSED
-      continue
-
-      case S.ATTRIB_VALUE_CLOSED:
-        if (is(whitespace, c)) {
-          parser.state = S.ATTRIB
-        } else if (c === ">") openTag(parser)
-        else if (c === "/") parser.state = S.OPEN_TAG_SLASH
-        else if (is(nameStart, c)) {
-          strictFail(parser, "No whitespace between attributes")
-          parser.attribName = c
-          parser.attribValue = ""
-          parser.state = S.ATTRIB_NAME
-        } else strictFail(parser, "Invalid attribute name")
-      continue
-
-      case S.ATTRIB_VALUE_UNQUOTED:
-        if (not(attribEnd,c)) {
-          if (c === "&") parser.state = S.ATTRIB_VALUE_ENTITY_U
-          else parser.attribValue += c
+
+        case S.ATTRIB_VALUE:
+          if (is(whitespace, c)) {
+            continue
+          } else if (is(quote, c)) {
+            parser.q = c
+            parser.state = S.ATTRIB_VALUE_QUOTED
+          } else {
+            strictFail(parser, 'Unquoted attribute value')
+            parser.state = S.ATTRIB_VALUE_UNQUOTED
+            parser.attribValue = c
+          }
           continue
-        }
-        attrib(parser)
-        if (c === ">") openTag(parser)
-        else parser.state = S.ATTRIB
-      continue
-
-      case S.CLOSE_TAG:
-        if (!parser.tagName) {
-          if (is(whitespace, c)) continue
-          else if (not(nameStart, c)) {
-            if (parser.script) {
-              parser.script += "</" + c
-              parser.state = S.SCRIPT
+
+        case S.ATTRIB_VALUE_QUOTED:
+          if (c !== parser.q) {
+            if (c === '&') {
+              parser.state = S.ATTRIB_VALUE_ENTITY_Q
             } else {
-              strictFail(parser, "Invalid tagname in closing tag.")
+              parser.attribValue += c
             }
-          } else parser.tagName = c
-        }
-        else if (c === ">") closeTag(parser)
-        else if (is(nameBody, c)) parser.tagName += c
-        else if (parser.script) {
-          parser.script += "</" + parser.tagName
-          parser.tagName = ""
-          parser.state = S.SCRIPT
-        } else {
-          if (not(whitespace, c)) strictFail(parser,
-            "Invalid tagname in closing tag")
-          parser.state = S.CLOSE_TAG_SAW_WHITE
-        }
-      continue
-
-      case S.CLOSE_TAG_SAW_WHITE:
-        if (is(whitespace, c)) continue
-        if (c === ">") closeTag(parser)
-        else strictFail(parser, "Invalid characters in closing tag")
-      continue
-
-      case S.TEXT_ENTITY:
-      case S.ATTRIB_VALUE_ENTITY_Q:
-      case S.ATTRIB_VALUE_ENTITY_U:
-        switch(parser.state) {
-          case S.TEXT_ENTITY:
-            var returnState = S.TEXT, buffer = "textNode"
-          break
-
-          case S.ATTRIB_VALUE_ENTITY_Q:
-            var returnState = S.ATTRIB_VALUE_QUOTED, buffer = "attribValue"
-          break
-
-          case S.ATTRIB_VALUE_ENTITY_U:
-            var returnState = S.ATTRIB_VALUE_UNQUOTED, buffer = "attribValue"
-          break
-        }
-        if (c === ";") {
-          parser[buffer] += parseEntity(parser)
-          parser.entity = ""
-          parser.state = returnState
-        }
-        else if (is(entity, c)) parser.entity += c
-        else {
-          strictFail(parser, "Invalid character entity")
-          parser[buffer] += "&" + parser.entity + c
-          parser.entity = ""
-          parser.state = returnState
-        }
-      continue
+            continue
+          }
+          attrib(parser)
+          parser.q = ''
+          parser.state = S.ATTRIB_VALUE_CLOSED
+          continue
+
+        case S.ATTRIB_VALUE_CLOSED:
+          if (is(whitespace, c)) {
+            parser.state = S.ATTRIB
+          } else if (c === '>') {
+            openTag(parser)
+          } else if (c === '/') {
+            parser.state = S.OPEN_TAG_SLASH
+          } else if (is(nameStart, c)) {
+            strictFail(parser, 'No whitespace between attributes')
+            parser.attribName = c
+            parser.attribValue = ''
+            parser.state = S.ATTRIB_NAME
+          } else {
+            strictFail(parser, 'Invalid attribute name')
+          }
+          continue
 
-      default:
-        throw new Error(parser, "Unknown state: " + parser.state)
+        case S.ATTRIB_VALUE_UNQUOTED:
+          if (not(attribEnd, c)) {
+            if (c === '&') {
+              parser.state = S.ATTRIB_VALUE_ENTITY_U
+            } else {
+              parser.attribValue += c
+            }
+            continue
+          }
+          attrib(parser)
+          if (c === '>') {
+            openTag(parser)
+          } else {
+            parser.state = S.ATTRIB
+          }
+          continue
+
+        case S.CLOSE_TAG:
+          if (!parser.tagName) {
+            if (is(whitespace, c)) {
+              continue
+            } else if (not(nameStart, c)) {
+              if (parser.script) {
+                parser.script += '</' + c
+                parser.state = S.SCRIPT
+              } else {
+                strictFail(parser, 'Invalid tagname in closing tag.')
+              }
+            } else {
+              parser.tagName = c
+            }
+          } else if (c === '>') {
+            closeTag(parser)
+          } else if (is(nameBody, c)) {
+            parser.tagName += c
+          } else if (parser.script) {
+            parser.script += '</' + parser.tagName
+            parser.tagName = ''
+            parser.state = S.SCRIPT
+          } else {
+            if (not(whitespace, c)) {
+              strictFail(parser, 'Invalid tagname in closing tag')
+            }
+            parser.state = S.CLOSE_TAG_SAW_WHITE
+          }
+          continue
+
+        case S.CLOSE_TAG_SAW_WHITE:
+          if (is(whitespace, c)) {
+            continue
+          }
+          if (c === '>') {
+            closeTag(parser)
+          } else {
+            strictFail(parser, 'Invalid characters in closing tag')
+          }
+          continue
+
+        case S.TEXT_ENTITY:
+        case S.ATTRIB_VALUE_ENTITY_Q:
+        case S.ATTRIB_VALUE_ENTITY_U:
+          var returnState
+          var buffer
+          switch (parser.state) {
+            case S.TEXT_ENTITY:
+              returnState = S.TEXT
+              buffer = 'textNode'
+              break
+
+            case S.ATTRIB_VALUE_ENTITY_Q:
+              returnState = S.ATTRIB_VALUE_QUOTED
+              buffer = 'attribValue'
+              break
+
+            case S.ATTRIB_VALUE_ENTITY_U:
+              returnState = S.ATTRIB_VALUE_UNQUOTED
+              buffer = 'attribValue'
+              break
+          }
+
+          if (c === ';') {
+            parser[buffer] += parseEntity(parser)
+            parser.entity = ''
+            parser.state = returnState
+          } else if (is(parser.entity.length ? entityBody : entityStart, c)) {
+            parser.entity += c
+          } else {
+            strictFail(parser, 'Invalid character in entity name')
+            parser[buffer] += '&' + parser.entity + c
+            parser.entity = ''
+            parser.state = returnState
+          }
+
+          continue
+
+        default:
+          throw new Error(parser, 'Unknown state: ' + parser.state)
+      }
+    } // while
+
+    if (parser.position >= parser.bufferCheckPosition) {
+      checkBufferLength(parser)
     }
-  } // while
-  // cdata blocks can get very big under normal conditions. emit and move on.
-  // if (parser.state === S.CDATA && parser.cdata) {
-  //   emitNode(parser, "oncdata", parser.cdata)
-  //   parser.cdata = ""
-  // }
-  if (parser.position >= parser.bufferCheckPosition) checkBufferLength(parser)
-  return parser
-}
-
-/*! http://mths.be/fromcodepoint v0.1.0 by @mathias */
-if (!String.fromCodePoint) {
-        (function() {
-                var stringFromCharCode = String.fromCharCode;
-                var floor = Math.floor;
-                var fromCodePoint = function() {
-                        var MAX_SIZE = 0x4000;
-                        var codeUnits = [];
-                        var highSurrogate;
-                        var lowSurrogate;
-                        var index = -1;
-                        var length = arguments.length;
-                        if (!length) {
-                                return '';
-                        }
-                        var result = '';
-                        while (++index < length) {
-                                var codePoint = Number(arguments[index]);
-                                if (
-                                        !isFinite(codePoint) || // `NaN`, `+Infinity`, or `-Infinity`
-                                        codePoint < 0 || // not a valid Unicode code point
-                                        codePoint > 0x10FFFF || // not a valid Unicode code point
-                                        floor(codePoint) != codePoint // not an integer
-                                ) {
-                                        throw RangeError('Invalid code point: ' + codePoint);
-                                }
-                                if (codePoint <= 0xFFFF) { // BMP code point
-                                        codeUnits.push(codePoint);
-                                } else { // Astral code point; split in surrogate halves
-                                        // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
-                                        codePoint -= 0x10000;
-                                        highSurrogate = (codePoint >> 10) + 0xD800;
-                                        lowSurrogate = (codePoint % 0x400) + 0xDC00;
-                                        codeUnits.push(highSurrogate, lowSurrogate);
-                                }
-                                if (index + 1 == length || codeUnits.length > MAX_SIZE) {
-                                        result += stringFromCharCode.apply(null, codeUnits);
-                                        codeUnits.length = 0;
-                                }
-                        }
-                        return result;
-                };
-                if (Object.defineProperty) {
-                        Object.defineProperty(String, 'fromCodePoint', {
-                                'value': fromCodePoint,
-                                'configurable': true,
-                                'writable': true
-                        });
-                } else {
-                        String.fromCodePoint = fromCodePoint;
-                }
-        }());
-}
+    return parser
+  }
 
-})(typeof exports === "undefined" ? sax = {} : exports);
+  /*! http://mths.be/fromcodepoint v0.1.0 by @mathias */
+  if (!String.fromCodePoint) {
+    (function () {
+      var stringFromCharCode = String.fromCharCode
+      var floor = Math.floor
+      var fromCodePoint = function () {
+        var MAX_SIZE = 0x4000
+        var codeUnits = []
+        var highSurrogate
+        var lowSurrogate
+        var index = -1
+        var length = arguments.length
+        if (!length) {
+          return ''
+        }
+        var result = ''
+        while (++index < length) {
+          var codePoint = Number(arguments[index])
+          if (
+            !isFinite(codePoint) || // `NaN`, `+Infinity`, or `-Infinity`
+            codePoint < 0 || // not a valid Unicode code point
+            codePoint > 0x10FFFF || // not a valid Unicode code point
+            floor(codePoint) !== codePoint // not an integer
+          ) {
+            throw RangeError('Invalid code point: ' + codePoint)
+          }
+          if (codePoint <= 0xFFFF) { // BMP code point
+            codeUnits.push(codePoint)
+          } else { // Astral code point; split in surrogate halves
+            // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+            codePoint -= 0x10000
+            highSurrogate = (codePoint >> 10) + 0xD800
+            lowSurrogate = (codePoint % 0x400) + 0xDC00
+            codeUnits.push(highSurrogate, lowSurrogate)
+          }
+          if (index + 1 === length || codeUnits.length > MAX_SIZE) {
+            result += stringFromCharCode.apply(null, codeUnits)
+            codeUnits.length = 0
+          }
+        }
+        return result
+      }
+      if (Object.defineProperty) {
+        Object.defineProperty(String, 'fromCodePoint', {
+          value: fromCodePoint,
+          configurable: true,
+          writable: true
+        })
+      } else {
+        String.fromCodePoint = fromCodePoint
+      }
+    }())
+  }
+})(typeof exports === 'undefined' ? this.sax = {} : exports)