JasonWoof Got questions, comments, patches, etc.? Contact Jason Woofenden
implement fragment parsing algorithm
[peach-html5-editor.git] / parse-html.coffee
index fee4202..425fe3c 100644 (file)
 
 
 # This file implements a parser for html snippets, meant to be used by a
-# WYSIWYG editor. Hence it does not attempt to parse doctypes, <html>, <head>
-# or <body> tags, nor does it produce the top level "document" node in the dom
-# tree, nor nodes for html, head or body. Comments containing "fixfull"
-# indicate places where additional code is needed for full HTML document
-# parsing.
+# WYSIWYG editor.
+
+# The implementation is a pretty direct implementation of the parsing algorithm
+# described here:
+# http://www.w3.org/TR/html5/syntax.html#preprocessing-the-input-stream
+#
+# Deviations from that spec:
+#
+#   Purposeful: search this file for "WHATWG"
 #
-# Instead, the data structure produced by this parser is an array of Nodes.
+#   Not finished yet: search this file for "fixfull", "TODO" and "FIXME"
 
 
 # stacks/lists
@@ -54,6 +58,15 @@ unless module?.exports?
        window.wheic = {}
        module = exports: window.wheic
 
+from_code_point = (x) ->
+       if String.fromCodePoint?
+               return String.fromCodePoint x
+       else
+               if x <= 0xffff
+                       return String.fromCharCode x
+               x -= 0x10000
+               return String.fromCharCode((x >> 10) + 0xd800, (x % 0x400) + 0xdc00)
+
 # Each node is an obect of the Node class. Here are the Node types:
 TYPE_TAG = 0 # name, {attributes}, [children]
 TYPE_TEXT = 1 # "text"
@@ -71,6 +84,11 @@ NS_HTML = 1
 NS_MATHML = 2
 NS_SVG = 3
 
+# quirks mode constants
+QUIRKS_NO = 1
+QUIRKS_LIMITED = 2
+QUIRKS_YES = 3
+
 g_debug_log = []
 debug_log_reset = ->
        g_debug_log = []
@@ -99,7 +117,7 @@ class Node
                        @id = "#{++prev_node_id}"
        acknowledge_self_closing: ->
                if @token?
-                       @token.flag 'did_self_close'
+                       @token.flag 'did_self_close', true
                else
                        @flag 'did_self_close', true
        flag: (key, value = null) ->
@@ -206,6 +224,94 @@ is_input_hidden_tok = (t) ->
 # https://en.wikipedia.org/wiki/Whitespace_character#Unicode
 whitespace_chars = "\u0009\u000a\u000b\u000c\u000d\u0020\u0085\u00a0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000"
 
+unicode_fixes = {}
+unicode_fixes[0x00] = "\uFFFD"
+unicode_fixes[0x80] = "\u20AC"
+unicode_fixes[0x82] = "\u201A"
+unicode_fixes[0x83] = "\u0192"
+unicode_fixes[0x84] = "\u201E"
+unicode_fixes[0x85] = "\u2026"
+unicode_fixes[0x86] = "\u2020"
+unicode_fixes[0x87] = "\u2021"
+unicode_fixes[0x88] = "\u02C6"
+unicode_fixes[0x89] = "\u2030"
+unicode_fixes[0x8A] = "\u0160"
+unicode_fixes[0x8B] = "\u2039"
+unicode_fixes[0x8C] = "\u0152"
+unicode_fixes[0x8E] = "\u017D"
+unicode_fixes[0x91] = "\u2018"
+unicode_fixes[0x92] = "\u2019"
+unicode_fixes[0x93] = "\u201C"
+unicode_fixes[0x94] = "\u201D"
+unicode_fixes[0x95] = "\u2022"
+unicode_fixes[0x96] = "\u2013"
+unicode_fixes[0x97] = "\u2014"
+unicode_fixes[0x98] = "\u02DC"
+unicode_fixes[0x99] = "\u2122"
+unicode_fixes[0x9A] = "\u0161"
+unicode_fixes[0x9B] = "\u203A"
+unicode_fixes[0x9C] = "\u0153"
+unicode_fixes[0x9E] = "\u017E"
+unicode_fixes[0x9F] = "\u0178"
+
+quirks_yes_pi_prefixes = [
+       "+//silmaril//dtd html pro v0r11 19970101//"
+       "-//as//dtd html 3.0 aswedit + extensions//"
+       "-//advasoft ltd//dtd html 3.0 aswedit + extensions//"
+       "-//ietf//dtd html 2.0 level 1//"
+       "-//ietf//dtd html 2.0 level 2//"
+       "-//ietf//dtd html 2.0 strict level 1//"
+       "-//ietf//dtd html 2.0 strict level 2//"
+       "-//ietf//dtd html 2.0 strict//"
+       "-//ietf//dtd html 2.0//"
+       "-//ietf//dtd html 2.1e//"
+       "-//ietf//dtd html 3.0//"
+       "-//ietf//dtd html 3.2 final//"
+       "-//ietf//dtd html 3.2//"
+       "-//ietf//dtd html 3//"
+       "-//ietf//dtd html level 0//"
+       "-//ietf//dtd html level 1//"
+       "-//ietf//dtd html level 2//"
+       "-//ietf//dtd html level 3//"
+       "-//ietf//dtd html strict level 0//"
+       "-//ietf//dtd html strict level 1//"
+       "-//ietf//dtd html strict level 2//"
+       "-//ietf//dtd html strict level 3//"
+       "-//ietf//dtd html strict//"
+       "-//ietf//dtd html//"
+       "-//metrius//dtd metrius presentational//"
+       "-//microsoft//dtd internet explorer 2.0 html strict//"
+       "-//microsoft//dtd internet explorer 2.0 html//"
+       "-//microsoft//dtd internet explorer 2.0 tables//"
+       "-//microsoft//dtd internet explorer 3.0 html strict//"
+       "-//microsoft//dtd internet explorer 3.0 html//"
+       "-//microsoft//dtd internet explorer 3.0 tables//"
+       "-//netscape comm. corp.//dtd html//"
+       "-//netscape comm. corp.//dtd strict html//"
+       "-//o'reilly and associates//dtd html 2.0//"
+       "-//o'reilly and associates//dtd html extended 1.0//"
+       "-//o'reilly and associates//dtd html extended relaxed 1.0//"
+       "-//sq//dtd html 2.0 hotmetal + extensions//"
+       "-//softquad software//dtd hotmetal pro 6.0::19990601::extensions to html 4.0//"
+       "-//softquad//dtd hotmetal pro 4.0::19971010::extensions to html 4.0//"
+       "-//spyglass//dtd html 2.0 extended//"
+       "-//sun microsystems corp.//dtd hotjava html//"
+       "-//sun microsystems corp.//dtd hotjava strict html//"
+       "-//w3c//dtd html 3 1995-03-24//"
+       "-//w3c//dtd html 3.2 draft//"
+       "-//w3c//dtd html 3.2 final//"
+       "-//w3c//dtd html 3.2//"
+       "-//w3c//dtd html 3.2s draft//"
+       "-//w3c//dtd html 4.0 frameset//"
+       "-//w3c//dtd html 4.0 transitional//"
+       "-//w3c//dtd html experimental 19960712//"
+       "-//w3c//dtd html experimental 970421//"
+       "-//w3c//dtd w3 html//"
+       "-//w3o//dtd w3 html 3.0//"
+       "-//webtechs//dtd mozilla html 2.0//"
+       "-//webtechs//dtd mozilla html//"
+]
+
 # These are the character references that don't need a terminating semicolon
 # min length: 2, max: 6, none are a prefix of any other.
 legacy_char_refs = {
@@ -297,14 +403,17 @@ special_elements = {
        h2:NS_HTML, h3:NS_HTML, h4:NS_HTML, h5:NS_HTML, h6:NS_HTML, head:NS_HTML,
        header:NS_HTML, hgroup:NS_HTML, hr:NS_HTML, html:NS_HTML, iframe:NS_HTML,
        img:NS_HTML, input:NS_HTML, isindex:NS_HTML, li:NS_HTML, link:NS_HTML,
-       listing:NS_HTML, main:NS_HTML, marquee:NS_HTML, meta:NS_HTML, nav:NS_HTML,
-       noembed:NS_HTML, noframes:NS_HTML, noscript:NS_HTML, object:NS_HTML,
-       ol:NS_HTML, p:NS_HTML, param:NS_HTML, plaintext:NS_HTML, pre:NS_HTML,
-       script:NS_HTML, section:NS_HTML, select:NS_HTML, source:NS_HTML,
-       style:NS_HTML, summary:NS_HTML, table:NS_HTML, tbody:NS_HTML, td:NS_HTML,
-       template:NS_HTML, textarea:NS_HTML, tfoot:NS_HTML, th:NS_HTML,
-       thead:NS_HTML, title:NS_HTML, tr:NS_HTML, track:NS_HTML, ul:NS_HTML,
-       wbr:NS_HTML, xmp:NS_HTML,
+       listing:NS_HTML, main:NS_HTML, marquee:NS_HTML,
+
+       menu:NS_HTML,menuitem:NS_HTML, # WHATWG adds these
+
+       meta:NS_HTML, nav:NS_HTML, noembed:NS_HTML, noframes:NS_HTML,
+       noscript:NS_HTML, object:NS_HTML, ol:NS_HTML, p:NS_HTML, param:NS_HTML,
+       plaintext:NS_HTML, pre:NS_HTML, script:NS_HTML, section:NS_HTML,
+       select:NS_HTML, source:NS_HTML, style:NS_HTML, summary:NS_HTML,
+       table:NS_HTML, tbody:NS_HTML, td:NS_HTML, template:NS_HTML,
+       textarea:NS_HTML, tfoot:NS_HTML, th:NS_HTML, thead:NS_HTML, title:NS_HTML,
+       tr:NS_HTML, track:NS_HTML, ul:NS_HTML, wbr:NS_HTML, xmp:NS_HTML,
 
        # MathML:
        mi:NS_MATHML, mo:NS_MATHML, mn:NS_MATHML, ms:NS_MATHML, mtext:NS_MATHML,
@@ -324,14 +433,15 @@ mathml_text_integration = {
        mi: NS_MATHML, mo: NS_MATHML, mn: NS_MATHML, ms: NS_MATHML, mtext: NS_MATHML
 }
 is_mathml_text_integration_point = (el) ->
-       return mathml_text_integration[el.name] = el.namespace
+       return mathml_text_integration[el.name] is el.namespace
 is_html_integration = (el) -> # DON'T PASS A TOKEN
-       if el.namespace is NS_MATHML and el.name is 'annotation-xml'
-               if el.attrs.encoding?
-                       if el.attrs.encoding.toLowerCase() is 'text/html'
-                               return true
-                       if el.attrs.encoding.toLowerCase() is 'application/xhtml+xml'
-                               return true
+       if el.namespace is NS_MATHML
+               if el.name is 'annotation-xml'
+                       if el.attrs.encoding?
+                               if el.attrs.encoding.toLowerCase() is 'text/html'
+                                       return true
+                               if el.attrs.encoding.toLowerCase() is 'application/xhtml+xml'
+                                       return true
                return false
        if el.namespace is NS_SVG
                if el.name is 'foreignObject' or el.name is 'desc' or el.name is 'title'
@@ -342,28 +452,25 @@ h_tags = {
        h1:NS_HTML, h2:NS_HTML, h3:NS_HTML, h4:NS_HTML, h5:NS_HTML, h6:NS_HTML
 }
 
-# FIXME namespacify
 foster_parenting_targets = {
-       table: true
-       tbody: true
-       tfoot: true
-       thead: true
-       tr: true
+       table: NS_HTML
+       tbody: NS_HTML
+       tfoot: NS_HTML
+       thead: NS_HTML
+       tr: NS_HTML
 }
 
-# FIXME namespacify
-# all html I presume
 end_tag_implied = {
-       dd: true
-       dt: true
-       li: true
-       option: true
-       optgroup: true
-       p: true
-       rb: true
-       rp: true
-       rt: true
-       rtc: true
+       dd: NS_HTML
+       dt: NS_HTML
+       li: NS_HTML
+       option: NS_HTML
+       optgroup: NS_HTML
+       p: NS_HTML
+       rb: NS_HTML
+       rp: NS_HTML
+       rt: NS_HTML
+       rtc: NS_HTML
 }
 
 el_is_special = (e) ->
@@ -424,7 +531,7 @@ svg_attribute_fixes = {
        diffuseconstant: 'diffuseConstant'
        edgemode: 'edgeMode'
        externalresourcesrequired: 'externalResourcesRequired'
-       filterres: 'filterRes'
+       # WHATWG removes this: filterres: 'filterRes'
        filterunits: 'filterUnits'
        glyphref: 'glyphRef'
        gradienttransform: 'gradientTransform'
@@ -476,6 +583,20 @@ svg_attribute_fixes = {
        ychannelselector: 'yChannelSelector'
        zoomandpan: 'zoomAndPan'
 }
+foreign_attr_fixes = {
+       'xlink:actuate': 'xlink actuate'
+       'xlink:arcrole': 'xlink arcrole'
+       'xlink:href': 'xlink href'
+       'xlink:role': 'xlink role'
+       'xlink:show': 'xlink show'
+       'xlink:title': 'xlink title'
+       'xlink:type': 'xlink type'
+       'xml:base': 'xml base'
+       'xml:lang': 'xml lang'
+       'xml:space': 'xml space'
+       'xmlns': 'xmlns'
+       'xmlns:xlink': 'xmlns xlink'
+}
 adjust_mathml_attributes = (t) ->
        for a in t.attrs_a
                if a[0] is 'definitionurl'
@@ -488,6 +609,9 @@ adjust_svg_attributes = (t) ->
        return
 adjust_foreign_attributes = (t) ->
        # fixfull
+       for a in t.attrs_a
+               if foreign_attr_fixes[a[0]]?
+                       a[0] = foreign_attr_fixes[a[0]]
        return
 
 # decode_named_char_ref()
@@ -544,18 +668,29 @@ parse_html = (args) ->
                else
                        console.log "Parse error at character #{cur} of #{txt.length}"
 
+       # http://www.w3.org/TR/html5/syntax.html#push-onto-the-list-of-active-formatting-elements
+       # "Noah's Ark clause" but with three
        afe_push = (new_el) ->
                matches = 0
                for el, i in afe
+                       if el.type is TYPE_AFE_MARKER
+                               break
                        if el.name is new_el.name and el.namespace is new_el.namespace
+                               attrs_match = true
                                for k, v of el.attrs
-                                       continue unless new_el.attrs[k] is v
-                               for k, v of new_el.attrs
-                                       continue unless el.attrs[k] is v
-                               matches += 1
-                               if matches is 3
-                                       afe.splice i, 1
-                                       break
+                                       unless new_el.attrs[k] is v
+                                               attrs_match = false
+                                               break
+                               if attrs_match
+                                       for k, v of new_el.attrs
+                                               unless el.attrs[k] is v
+                                                       attrs_match = false
+                                                       break
+                               if attrs_match
+                                       matches += 1
+                                       if matches is 3
+                                               afe.splice i, 1
+                                               break
                afe.unshift new_el
        afe_push_marker = ->
                afe.unshift new_afe_marker()
@@ -565,33 +700,33 @@ parse_html = (args) ->
 
        # But first... the helpers
        template_tag_is_open = ->
-               for t in open_els
-                       if t.name is 'template' # maybe should also check: and t.namespace is 'html'
+               for el in open_els
+                       if el.name is 'template' and el.namespace is NS_HTML
                                return true
                return false
        is_in_scope_x = (tag_name, scope, namespace) ->
-               for t in open_els
-                       if t.name is tag_name and (namespace is null or namespace is t.namespace)
+               for el in open_els
+                       if el.name is tag_name and (namespace is null or namespace is el.namespace)
                                return true
-                       if scope[t.name] is t.namespace
+                       if scope[el.name] is el.namespace
                                return false
                return false
        is_in_scope_x_y = (tag_name, scope, scope2, namespace) ->
-               for t in open_els
-                       if t.name is tag_name and (namespace is null or namespace is t.namespace)
+               for el in open_els
+                       if el.name is tag_name and (namespace is null or namespace is el.namespace)
                                return true
-                       if scope[t.name] is t.namespace
+                       if scope[el.name] is el.namespace
                                return false
-                       if scope2[t.name] is t.namespace
+                       if scope2[el.name] is el.namespace
                                return false
                return false
        standard_scopers = {
                applet: NS_HTML, caption: NS_HTML, html: NS_HTML, table: NS_HTML,
                td: NS_HTML, th: NS_HTML, marquee: NS_HTML, object: NS_HTML,
-               template: NS_HTML, mi: NS_MATHML,
+               template: NS_HTML,
 
-               mo: NS_MATHML, mn: NS_MATHML, ms: NS_MATHML, mtext: NS_MATHML,
-               'annotation-xml': NS_MATHML,
+               mi: NS_MATHML, mo: NS_MATHML, mn: NS_MATHML, ms: NS_MATHML,
+               mtext: NS_MATHML, 'annotation-xml': NS_MATHML,
 
                foreignObject: NS_SVG, desc: NS_SVG, title: NS_SVG
        }
@@ -611,15 +746,16 @@ parse_html = (args) ->
                for t in open_els
                        if t.name is tag_name and (namespace is null or namespace is t.namespace)
                                return true
-                       if t.ns isnt NS_HTML and t.name isnt 'optgroup' and t.name isnt 'option'
+                       if t.namespace isnt NS_HTML and t.name isnt 'optgroup' and t.name isnt 'option'
                                return false
                return false
        # this checks for a particular element, not by name
-       el_is_in_scope = (el) ->
-               for t in open_els
-                       if t is el
+       # this requires a namespace match
+       el_is_in_scope = (needle) ->
+               for el in open_els
+                       if el is needle
                                return true
-                       if standard_scopers[t.name] is t.namespace
+                       if standard_scopers[el.name] is el.namespace
                                return false
                return false
 
@@ -635,15 +771,15 @@ parse_html = (args) ->
                        open_els.shift()
                return
        clear_to_table_body_stopers = {
-               'tbody': true
-               'tfoot': true
-               'thead': true
-               'template': true
-               'html': true
+               tbody: NS_HTML
+               tfoot: NS_HTML
+               thead: NS_HTML
+               template: NS_HTML
+               html: NS_HTML
        }
        clear_stack_to_table_body_context = ->
                loop
-                       if clear_to_table_body_stopers[open_els[0].name]?
+                       if clear_to_table_body_stopers[open_els[0].name] is open_els[0].namespace
                                break
                        open_els.shift()
                return
@@ -681,10 +817,10 @@ parse_html = (args) ->
                loop
                        if node_i is open_els.length - 1
                                last = true
-                               # fixfull (fragment case)
-
+                               if flag_fragment_parsing
+                                       node = context_element
                        # 4. If node is a select element, run these substeps:
-                       if node.name is 'select'
+                       if node.name is 'select' and node.namespace is NS_HTML
                                # 1. If last is true, jump to the step below labeled done.
                                unless last
                                        # 2. Let ancestor be node.
@@ -701,11 +837,11 @@ parse_html = (args) ->
                                                ancestor = open_els[ancestor_i]
                                                # 5. If ancestor is a template node, jump to the step below
                                                # labeled done.
-                                               if ancestor.name is 'template'
+                                               if ancestor.name is 'template' and ancestor.namespace is NS_HTML
                                                        break
                                                # 6. If ancestor is a table node, switch the insertion mode
                                                # to "in select in table" and abort these steps.
-                                               if ancestor.name is 'table'
+                                               if ancestor.name is 'table' and ancestor.namespace is NS_HTML
                                                        ins_mode = ins_mode_in_select_in_table
                                                        return
                                                # 7. Jump back to the step labeled loop.
@@ -715,61 +851,62 @@ parse_html = (args) ->
                                return
                        # 5. If node is a td or th element and last is false, then switch
                        # the insertion mode to "in cell" and abort these steps.
-                       if (node.name is 'td' or node.name is 'th') and last is false
+                       if (node.name is 'td' or node.name is 'th') and node.namespace is NS_HTML and last is false
                                ins_mode = ins_mode_in_cell
                                return
                        # 6. If node is a tr element, then switch the insertion mode to "in
                        # row" and abort these steps.
-                       if node.name is 'tr'
+                       if node.name is 'tr' and node.namespace is NS_HTML
                                ins_mode = ins_mode_in_row
                                return
                        # 7. If node is a tbody, thead, or tfoot element, then switch the
                        # insertion mode to "in table body" and abort these steps.
-                       if node.name is 'tbody' or node.name is 'thead' or node.name is 'tfoot'
+                       if (node.name is 'tbody' or node.name is 'thead' or node.name is 'tfoot') and node.namespace is NS_HTML
                                ins_mode = ins_mode_in_table_body
                                return
                        # 8. If node is a caption element, then switch the insertion mode
                        # to "in caption" and abort these steps.
-                       if node.name is 'caption'
+                       if node.name is 'caption' and node.namespace is NS_HTML
                                ins_mode = ins_mode_in_caption
                                return
                        # 9. If node is a colgroup element, then switch the insertion mode
                        # to "in column group" and abort these steps.
-                       if node.name is 'colgroup'
+                       if node.name is 'colgroup' and node.namespace is NS_HTML
                                ins_mode = ins_mode_in_column_group
                                return
                        # 10. If node is a table element, then switch the insertion mode to
                        # "in table" and abort these steps.
-                       if node.name is 'table'
+                       if node.name is 'table' and node.namespace is NS_HTML
                                ins_mode = ins_mode_in_table
                                return
                        # 11. If node is a template element, then switch the insertion mode
                        # to the current template insertion mode and abort these steps.
-                       # fixfull (template insertion mode stack)
-
+                       if node.name is 'template' and node.namespace is NS_HTML
+                               ins_mode = template_ins_modes[0]
+                               return
                        # 12. If node is a head element and last is true, then switch the
                        # insertion mode to "in body" ("in body"! not "in head"!) and abort
                        # these steps. (fragment case)
-                       if node.name is 'head' and last
+                       if node.name is 'head' and node.namespace is NS_HTML and last
                                ins_mode = ins_mode_in_body
                                return
                        # 13. If node is a head element and last is false, then switch the
                        # insertion mode to "in head" and abort these steps.
-                       if node.name is 'head' and last is false
+                       if node.name is 'head' and node.namespace is NS_HTML and last is false
                                ins_mode = ins_mode_in_head
                                return
                        # 14. If node is a body element, then switch the insertion mode to
                        # "in body" and abort these steps.
-                       if node.name is 'body'
+                       if node.name is 'body' and node.namespace is NS_HTML
                                ins_mode = ins_mode_in_body
                                return
                        # 15. If node is a frameset element, then switch the insertion mode
                        # to "in frameset" and abort these steps. (fragment case)
-                       if node.name is 'frameset'
+                       if node.name is 'frameset' and node.namespace is NS_HTML
                                ins_mode = ins_mode_in_frameset
                                return
                        # 16. If node is an html element, run these substeps:
-                       if node.name is 'html'
+                       if node.name is 'html' and node.namespace is NS_HTML
                                # 1. If the head element pointer is null, switch the insertion
                                # mode to "before head" and abort these steps. (fragment case)
                                if head_element_pointer is null
@@ -833,16 +970,46 @@ parse_html = (args) ->
                debug_log "tree: #{serialize_els doc.children, false, true}"
                debug_log "open_els: #{serialize_els open_els, true, true}"
                debug_log "afe: #{serialize_els afe, true, true}"
-               if open_els[0].name is subject
-                       el = open_els[0]
-                       open_els.shift()
+# this block implements tha W3C spec
+#              # 1. If the current node is an HTML element whose tag name is subject,
+#              # then run these substeps:
+#              #
+#              # 1. Let element be the current node.
+#              #
+#              # 2. Pop element off the stack of open elements.
+#              #
+#              # 3. If element is also in the list of active formatting elements,
+#              # remove the element from the list.
+#              #
+#              # 4. Abort the adoption agency algorithm.
+#              if open_els[0].name is subject and open_els[0].namespace is NS_HTML
+#                      el = open_els.shift()
+#                      # remove it from the list of active formatting elements (if found)
+#                      for t, i in afe
+#                              if t is el
+#                                      afe.splice i, 1
+#                                      break
+#                      debug_log "aaa: starting off with subject on top of stack, exiting"
+#                      return
+# WHATWG: https://html.spec.whatwg.org/multipage/syntax.html#adoption-agency-algorithm
+               # If the current node is an HTML element whose tag name is subject, and
+               # the current node is not in the list of active formatting elements,
+               # then pop the current node off the stack of open elements, and abort
+               # these steps.
+               if open_els[0].name is subject and open_els[0].namespace is NS_HTML
+                       debug_log "aaa: starting off with subject on top of stack, exiting"
                        # remove it from the list of active formatting elements (if found)
-                       for t, i in afe
-                               if t is el
-                                       afe.splice i, 1
+                       in_afe = false
+                       for el, i in afe
+                               if el is open_els[0]
+                                       in_afe = true
                                        break
-                       debug_log "aaa: starting off with subject on top of stack, exiting"
-                       return
+                       unless in_afe
+                               debug_log "aaa: ...and not in afe, aaa done"
+                               open_els.shift()
+                               return
+                       # fall through
+# END WHATWG
                outer = 0
                loop
                        if outer >= 8
@@ -1117,14 +1284,14 @@ parse_html = (args) ->
        # http://www.w3.org/TR/html5/syntax.html#close-a-p-element
        close_p_element = ->
                generate_implied_end_tags 'p' # arg is exception
-               if open_els[0].name isnt 'p'
+               unless open_els[0].name is 'p' and open_els[0].namespace is NS_HTML
                        parse_error()
                while open_els.length > 1 # just in case
                        el = open_els.shift()
-                       if el.name is 'p'
+                       if el.name is 'p' and el.namespace is NS_HTML
                                return
        close_p_if_in_button_scope = ->
-               if is_in_button_scope 'p'
+               if is_in_button_scope 'p', NS_HTML
                        close_p_element()
 
        # http://www.w3.org/TR/html5/syntax.html#insert-a-character
@@ -1150,7 +1317,7 @@ parse_html = (args) ->
                        ins_mode t
                        return
                if is_mathml_text_integration_point(acn)
-                       if t.type is TYPE_START_TAG and (t.name is 'mglyph' or t.name is 'malignmark')
+                       if t.type is TYPE_START_TAG and not (t.name is 'mglyph' or t.name is 'malignmark')
                                ins_mode t
                                return
                        if t.type is TYPE_TEXT
@@ -1185,7 +1352,7 @@ parse_html = (args) ->
                # If foster parenting is enabled and target is a table, tbody, tfoot,
                # thead, or tr element Foster parenting happens when content is
                # misnested in tables.
-               if flag_foster_parenting and foster_parenting_targets[target.name]
+               if flag_foster_parenting and foster_parenting_targets[target.name] is target.namespace
                        loop # once. this is here so we can ``break`` to "abort these substeps"
                                # 1. Let last template be the last template element in the
                                # stack of open elements, if any.
@@ -1318,7 +1485,7 @@ parse_html = (args) ->
        # 8.2.5.3 http://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags
        # http://www.w3.org/TR/html5/syntax.html#generate-implied-end-tags
        generate_implied_end_tags = (except = null) ->
-               while end_tag_implied[open_els[0].name] and open_els[0].name isnt except
+               while end_tag_implied[open_els[0].name] is open_els[0].namespace and open_els[0].name isnt except
                        open_els.shift()
 
        # 8.2.5.4 The rules for parsing tokens in HTML content
@@ -1326,6 +1493,35 @@ parse_html = (args) ->
 
        # 8.2.5.4.1 The "initial" insertion mode
        # http://www.w3.org/TR/html5/syntax.html#the-initial-insertion-mode
+       is_quirks_yes_doctype = (t) ->
+               if t.flag 'force-quirks'
+                       return true
+               if t.name isnt 'html'
+                       return true
+               if t.public_identifier?
+                       pi = t.public_identifier.toLowerCase()
+                       for p in quirks_yes_pi_prefixes
+                               if pi.substr(0, p.length) is p
+                                       return true
+                       if pi is '-//w3o//dtd w3 html strict 3.0//en//' or pi is '-/w3c/dtd html 4.0 transitional/en' or pi is 'html'
+                               return true
+               if t.system_identifier?
+                       if t.system_identifier.toLowerCase() is 'http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd'
+                               return true
+               else if t.public_identifier?
+                       # already did this: pi = t.public_identifier.toLowerCase()
+                       if pi.substr(0, 32) is '-//w3c//dtd html 4.01 frameset//' or pi.substr(0, 36) is '-//w3c//dtd html 4.01 transitional//'
+                               return true
+               return false
+       is_quirks_limited_doctype = (t) ->
+               if t.public_identifier?
+                       pi = t.public_identifier.toLowerCase()
+                       if pi.substr(0, 32) is '-//w3c//dtd xhtml 1.0 frameset//' or pi.substr(0, 36) is '-//w3c//dtd xhtml 1.0 transitional//'
+                               return true
+                       if t.system_identifier?
+                               if pi.substr(0, 32) is '-//w3c//dtd html 4.01 frameset//' or pi.substr(0, 36) is '-//w3c//dtd html 4.01 transitional//'
+                                       return true
+               return false
        ins_mode_initial = (t) ->
                if is_space_tok t
                        return
@@ -1334,13 +1530,20 @@ parse_html = (args) ->
                        doc.children.push t
                        return
                if t.type is TYPE_DOCTYPE
-                       # FIXME check identifiers, set quirks, etc
-                       # fixfull
+                       # fixfull syntax error from first paragraph and following bullets
+                       # fixfull set doc.doctype
+                       # fixfull is the "not an iframe srcdoc" thing relevant?
+                       if is_quirks_yes_doctype t
+                               doc.flag 'quirks mode', QUIRKS_YES
+                       else if is_quirks_limited_doctype t
+                               doc.flag 'quirks mode', QUIRKS_LIMITED
                        doc.children.push t
                        ins_mode = ins_mode_before_html
                        return
                # Anything else
-               #fixfull (iframe, quirks)
+               # fixfull not iframe srcdoc?
+               parse_error()
+               doc.flag 'quirks mode', QUIRKS_YES
                ins_mode = ins_mode_before_html
                process_token t
                return
@@ -1358,6 +1561,7 @@ parse_html = (args) ->
                if t.type is TYPE_START_TAG and t.name is 'html'
                        el = token_to_element t, NS_HTML, doc
                        doc.children.push el
+                       el.document = doc
                        open_els.unshift(el)
                        # fixfull (big paragraph in spec about manifest, fragment, urls, etc)
                        ins_mode = ins_mode_before_head
@@ -1369,9 +1573,9 @@ parse_html = (args) ->
                                parse_error()
                                return
                # Anything else
-               html_tok = new_open_tag 'html'
-               el = token_to_element html_tok, NS_HTML, doc
+               el = token_to_element new_open_tag('html'), NS_HTML, doc
                doc.children.push el
+               el.document = doc
                open_els.unshift el
                # ?fixfull browsing context
                ins_mode = ins_mode_before_head
@@ -1403,8 +1607,7 @@ parse_html = (args) ->
                                parse_error()
                                return
                # Anything else
-               head_tok = new_open_tag 'head'
-               el = insert_html_element head_tok
+               el = insert_html_element new_open_tag 'head'
                head_element_pointer = el
                ins_mode = ins_mode_in_head
                process_token t
@@ -1480,7 +1683,7 @@ parse_html = (args) ->
                                        parse_error()
                                loop
                                        el = open_els.shift()
-                                       if el.name is 'template'
+                                       if el.name is 'template' and el.namespace is NS_HTML
                                                break
                                clear_afe_to_marker()
                                template_ins_modes.shift()
@@ -1558,7 +1761,7 @@ parse_html = (args) ->
                        parse_error()
                        open_els.unshift head_element_pointer
                        ins_mode_in_head t
-                       for el, i of open_els
+                       for el, i in open_els
                                if el is head_element_pointer
                                        open_els.splice i, 1
                                        return
@@ -1578,17 +1781,23 @@ parse_html = (args) ->
 
        # 8.2.5.4.7 http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody
        in_body_any_other_end_tag = (name) -> # factored out because adoption agency calls it
-               for el, i in open_els
-                       if el.namespace is NS_HTML and el.name is name
+               node = open_els[0]
+               loop
+                       if node.name is name and node.namespace is NS_HTML
                                generate_implied_end_tags name # arg is exception
-                               parse_error() unless i is 0
-                               while i >= 0
-                                       open_els.shift()
-                                       i -= 1
-                               return
-                       if special_elements[el.name] is el.namespace
+                               unless node is open_els[0]
+                                       parse_error()
+                               loop
+                                       el = open_els.shift()
+                                       if el is node
+                                               return
+                       if special_elements[node.name] is node.namespace
                                parse_error()
                                return
+                       for el, i in open_els
+                               if node is el
+                                       node = open_els[i + 1]
+                                       break
                return
        ins_mode_in_body = (t) ->
                if t.type is TYPE_TEXT and t.text is "\u0000"
@@ -1613,7 +1822,7 @@ parse_html = (args) ->
                        parse_error()
                        return if template_tag_is_open()
                        root_attrs = open_els[open_els.length - 1].attrs
-                       for a of t.attrs_a
+                       for a in t.attrs_a
                                root_attrs[a[0]] = a[1] unless root_attrs[a[0]]?
                        return
 
@@ -1624,11 +1833,11 @@ parse_html = (args) ->
                        parse_error()
                        return if open_els.length < 2
                        second = open_els[open_els.length - 2]
-                       return unless second.ns is NS_HTML
+                       return unless second.namespace is NS_HTML
                        return unless second.name is 'body'
                        return if template_tag_is_open()
-                       frameset_ok_flag = false
-                       for a of t.attrs_a
+                       flag_frameset_ok = false
+                       for a in t.attrs_a
                                second.attrs[a[0]] = a[1] unless second.attrs[a[0]]?
                        return
                if t.type is TYPE_START_TAG and t.name is 'frameset'
@@ -1636,9 +1845,10 @@ parse_html = (args) ->
                        return if open_els.length < 2
                        second_i = open_els.length - 2
                        second = open_els[second_i]
-                       return unless second.ns is NS_HTML
+                       return unless second.namespace is NS_HTML
                        return unless second.name is 'body'
-                       flag_frameset_ok = false
+                       if flag_frameset_ok is false
+                               return
                        if second.parent?
                                for el, i in second.parent.children
                                        if el is second
@@ -1667,7 +1877,7 @@ parse_html = (args) ->
                                stop_parsing()
                        return
                if t.type is TYPE_END_TAG and t.name is 'body'
-                       unless is_in_scope 'body'
+                       unless is_in_scope 'body', NS_HTML
                                parse_error()
                                return
                        ok_tags = {
@@ -1684,7 +1894,7 @@ parse_html = (args) ->
                        ins_mode = ins_mode_after_body
                        return
                if t.type is TYPE_END_TAG and t.name is 'html'
-                       unless is_in_scope 'body'
+                       unless is_in_scope 'body', NS_HTML
                                parse_error()
                                return
                        ok_tags = {
@@ -1707,7 +1917,7 @@ parse_html = (args) ->
                        return
                if t.type is TYPE_START_TAG and h_tags[t.name]?
                        close_p_if_in_button_scope()
-                       if h_tags[open_els[0]] is NS_HTML
+                       if h_tags[open_els[0].name] is open_els[0].namespace
                                parse_error()
                                open_els.shift()
                        insert_html_element t
@@ -1715,11 +1925,7 @@ parse_html = (args) ->
                if t.type is TYPE_START_TAG and (t.name is 'pre' or t.name is 'listing')
                        close_p_if_in_button_scope()
                        insert_html_element t
-                       # spec: If the next token is a "LF" (U+000A) character token, then
-                       # ignore that token and move on to the next one. (Newlines at the
-                       # start of pre blocks are ignored as an authoring convenience.)
-                       if txt.charAt(cur) is "\u000a" # FIXME check for crlf?
-                               cur += 1
+                       eat_next_token_if_newline()
                        flag_frameset_ok = false
                        return
                if t.type is TYPE_START_TAG and t.name is 'form'
@@ -1914,6 +2120,10 @@ parse_html = (args) ->
                        return
                if t.type is TYPE_START_TAG and t.name is 'nobr'
                        reconstruct_afe()
+                       if is_in_scope 'nobr', NS_HTML
+                               parse_error()
+                               adoption_agency 'nobr'
+                               reconstruct_afe()
                        el = insert_html_element t
                        afe_push el
                        return
@@ -1940,14 +2150,16 @@ parse_html = (args) ->
                        clear_afe_to_marker()
                        return
                if t.type is TYPE_START_TAG and t.name is 'table'
-                       close_p_if_in_button_scope() # fixfull quirksmode thing
+                       unless doc.flag('quirks mode') is QUIRKS_YES
+                               close_p_if_in_button_scope() # test
                        insert_html_element t
                        flag_frameset_ok = false
                        ins_mode = ins_mode_in_table
                        return
                if t.type is TYPE_END_TAG and t.name is 'br'
                        parse_error()
-                       t.type is TYPE_START_TAG
+                       # W3C: t.type = TYPE_START_TAG
+                       t = new_open_tag 'br' # WHATWG
                        # fall through
                if t.type is TYPE_START_TAG and (t.name is 'area' or t.name is 'br' or t.name is 'embed' or t.name is 'img' or t.name is 'keygen' or t.name is 'wbr')
                        reconstruct_afe()
@@ -1964,7 +2176,8 @@ parse_html = (args) ->
                        unless is_input_hidden_tok t
                                flag_frameset_ok = false
                        return
-               if t.type is TYPE_START_TAG and (t.name is 'param' or t.name is 'source' or t.name is 'track')
+               if t.type is TYPE_START_TAG and (t.name is 'menuitem' or t.name is 'param' or t.name is 'source' or t.name is 'track')
+                       # WHATWG adds 'menuitem' for this block
                        insert_html_element t
                        open_els.shift()
                        t.acknowledge_self_closing()
@@ -2024,8 +2237,7 @@ parse_html = (args) ->
                        return
                if t.type is TYPE_START_TAG and t.name is 'textarea'
                        insert_html_element t
-                       if txt.charAt(cur) is "\u000a" # FIXME check for crlf?
-                               cur += 1
+                       eat_next_token_if_newline()
                        tok_state = tok_state_rcdata
                        original_ins_mode = ins_mode
                        flag_frameset_ok = false
@@ -2059,20 +2271,37 @@ parse_html = (args) ->
                        reconstruct_afe()
                        insert_html_element t
                        return
-               if t.type is TYPE_START_TAG and (t.name is 'rb' or t.name is 'rp' or t.name is 'rtc')
+# this comment block implements the W3C spec
+#              if t.type is TYPE_START_TAG and (t.name is 'rb' or t.name is 'rp' or t.name is 'rtc')
+#                      if is_in_scope 'ruby', NS_HTML
+#                              generate_implied_end_tags()
+#                              unless open_els[0].name is 'ruby' and open_els[0].namespace is NS_HTML
+#                                      parse_error()
+#                      insert_html_element t
+#                      return
+#              if t.type is TYPE_START_TAG and t.name is 'rt'
+#                      if is_in_scope 'ruby', NS_HTML
+#                              generate_implied_end_tags 'rtc' # arg is exception
+#                              unless (open_els[0].name is 'ruby' or open_els[0].name is 'rtc') and open_els[0].namespace is NS_HTML
+#                                      parse_error()
+#                      insert_html_element t
+#                      return
+# below implements the WHATWG spec https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inbody
+               if t.type is TYPE_START_TAG and (t.name is 'rb' or t.name is 'rtc')
                        if is_in_scope 'ruby', NS_HTML
                                generate_implied_end_tags()
                                unless open_els[0].name is 'ruby' and open_els[0].namespace is NS_HTML
                                        parse_error()
                        insert_html_element t
                        return
-               if t.type is TYPE_START_TAG and t.name is 'rt'
+               if t.type is TYPE_START_TAG and (t.name is 'rp' or t.name is 'rt')
                        if is_in_scope 'ruby', NS_HTML
-                               generate_implied_end_tags 'rtc' # arg is exception
+                               generate_implied_end_tags 'rtc'
                                unless (open_els[0].name is 'ruby' or open_els[0].name is 'rtc') and open_els[0].namespace is NS_HTML
                                        parse_error()
                        insert_html_element t
                        return
+# end WHATWG chunk
                if t.type is TYPE_START_TAG and t.name is 'math'
                        reconstruct_afe()
                        adjust_mathml_attributes t
@@ -2110,7 +2339,7 @@ parse_html = (args) ->
                        return
                if t.type is TYPE_EOF
                        parse_error()
-                       if open_els[0].name is 'script'
+                       if open_els[0].name is 'script' and open_els[0].namespace is NS_HTML
                                open_els[0].flag 'already started', true
                        open_els.shift()
                        ins_mode = original_ins_mode
@@ -2138,17 +2367,11 @@ parse_html = (args) ->
                ins_mode_in_body t
                flag_foster_parenting = false
                return
-       can_in_table = { # FIXME do this inline like everywhere else
-               'table': true
-               'tbody': true
-               'tfoot': true
-               'thead': true
-               'tr': true
-       }
        ins_mode_in_table = (t) ->
                switch t.type
                        when TYPE_TEXT
-                               if can_in_table[t.name]
+                               if (open_els[0].name is 'table' or open_els[0].name is 'tbody' or open_els[0].name is 'tfoot' or open_els[0].name is 'thead' or open_els[0].name is 'tr') and open_els[0].namespace is NS_HTML
+                                       pending_table_character_tokens = []
                                        original_ins_mode = ins_mode
                                        ins_mode = ins_mode_in_table_text
                                        process_token t
@@ -2185,10 +2408,10 @@ parse_html = (args) ->
                                                process_token t
                                        when 'table'
                                                parse_error()
-                                               if is_in_table_scope 'table'
+                                               if is_in_table_scope 'table', NS_HTML
                                                        loop
                                                                el = open_els.shift()
-                                                               if el.name is 'table'
+                                                               if el.name is 'table' and el.namespace is NS_HTML
                                                                        break
                                                        reset_ins_mode()
                                                        process_token t
@@ -2215,14 +2438,14 @@ parse_html = (args) ->
                        when TYPE_END_TAG
                                switch t.name
                                        when 'table'
-                                               if is_in_table_scope 'table'
+                                               if is_in_table_scope 'table', NS_HTML
                                                        loop
                                                                el = open_els.shift()
-                                                               if el.name is 'table'
+                                                               if el.name is 'table' and el.namespace is NS_HTML
                                                                        break
                                                        reset_ins_mode()
                                                else
-                                                       parse_error
+                                                       parse_error()
                                        when 'body', 'caption', 'col', 'colgroup', 'html', 'tbody', 'td', 'tfoot', 'th', 'thead', 'tr'
                                                parse_error()
                                        when 'template'
@@ -2238,7 +2461,7 @@ parse_html = (args) ->
        # 8.2.5.4.10 http://www.w3.org/TR/html5/syntax.html#parsing-main-intabletext
        ins_mode_in_table_text = (t) ->
                if t.type is TYPE_TEXT and t.text is "\u0000"
-                       # huh? I thought the tokenizer didn't emit these
+                       # from javascript?
                        parse_error()
                        return
                if t.type is TYPE_TEXT
@@ -2255,21 +2478,21 @@ parse_html = (args) ->
                                insert_character old
                else
                        for old in pending_table_character_tokens
-                               ins_mode_table_else old
-               pending_table_character_tokens = [] # FIXME test (spec doesn't say this)
+                               ins_mode_in_table_else old
+               pending_table_character_tokens = []
                ins_mode = original_ins_mode
                process_token t
 
        # 8.2.5.4.11 http://www.w3.org/TR/html5/syntax.html#parsing-main-incaption
        ins_mode_in_caption = (t) ->
                if t.type is TYPE_END_TAG and t.name is 'caption'
-                       if is_in_table_scope 'caption'
+                       if is_in_table_scope 'caption', NS_HTML
                                generate_implied_end_tags()
                                if open_els[0].name isnt 'caption'
                                        parse_error()
                                loop
                                        el = open_els.shift()
-                                       if el.name is 'caption'
+                                       if el.name is 'caption' and el.namespace is NS_HTML
                                                break
                                clear_afe_to_marker()
                                ins_mode = ins_mode_in_table
@@ -2279,10 +2502,10 @@ parse_html = (args) ->
                        return
                if (t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'tbody' or t.name is 'td' or t.name is 'tfoot' or t.name is 'th' or t.name is 'thead' or t.name is 'tr')) or t.type is TYPE_END_TAG and t.name is 'table'
                        parse_error()
-                       if is_in_table_scope 'caption'
+                       if is_in_table_scope 'caption', NS_HTML
                                loop
                                        el = open_els.shift()
-                                       if el.name is 'caption'
+                                       if el.name is 'caption' and el.namespace is NS_HTML
                                                break
                                clear_afe_to_marker()
                                ins_mode = ins_mode_in_table
@@ -2315,7 +2538,7 @@ parse_html = (args) ->
                        t.acknowledge_self_closing()
                        return
                if t.type is TYPE_END_TAG and t.name is 'colgroup'
-                       if open_els[0].name is 'colgroup'
+                       if open_els[0].name is 'colgroup' and open_els.namespace is NS_HTML
                                open_els.shift()
                                ins_mode = ins_mode_in_table
                        else
@@ -2354,7 +2577,7 @@ parse_html = (args) ->
                        process_token t
                        return
                if t.type is TYPE_END_TAG and (t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead')
-                       unless is_in_table_scope t.name # fixfull check namespace
+                       unless is_in_table_scope t.name, NS_HTML
                                parse_error()
                                return
                        clear_stack_to_table_body_context()
@@ -2364,10 +2587,10 @@ parse_html = (args) ->
                if (t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead')) or (t.type is TYPE_END_TAG and t.name is 'table')
                        has = false
                        for el in open_els
-                               if el.name is 'tbody' or el.name is 'tfoot' or el.name is 'thead'
+                               if el.namespace is NS_HTML and (el.name is 'tbody' or el.name is 'tfoot' or el.name is 'thead')
                                        has = true
                                        break
-                               if table_scopers[el.name]
+                               if table_scopers[el.name] is el.namespace
                                        break
                        if !has
                                parse_error()
@@ -2392,7 +2615,7 @@ parse_html = (args) ->
                        afe_push_marker()
                        return
                if t.type is TYPE_END_TAG and t.name is 'tr'
-                       if is_in_table_scope 'tr'
+                       if is_in_table_scope 'tr', NS_HTML
                                clear_stack_to_table_row_context()
                                open_els.shift()
                                ins_mode = ins_mode_in_table_body
@@ -2400,7 +2623,7 @@ parse_html = (args) ->
                                parse_error()
                        return
                if (t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead' or t.name is 'tr')) or t.type is TYPE_END_TAG and t.name is 'table'
-                       if is_in_table_scope 'tr'
+                       if is_in_table_scope 'tr', NS_HTML
                                clear_stack_to_table_row_context()
                                open_els.shift()
                                ins_mode = ins_mode_in_table_body
@@ -2409,8 +2632,8 @@ parse_html = (args) ->
                                parse_error()
                        return
                if t.type is TYPE_END_TAG and (t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead')
-                       if is_in_table_scope t.name # fixfull namespace
-                               if is_in_table_scope 'tr'
+                       if is_in_table_scope t.name, NS_HTML
+                               if is_in_table_scope 'tr', NS_HTML
                                        clear_stack_to_table_row_context()
                                        open_els.shift()
                                        ins_mode = ins_mode_in_table_body
@@ -2427,11 +2650,11 @@ parse_html = (args) ->
        # http://www.w3.org/TR/html5/syntax.html#close-the-cell
        close_the_cell = ->
                generate_implied_end_tags()
-               unless open_els[0].name is 'td' or open_els[0] is 'th'
+               unless (open_els[0].name is 'td' or open_els[0] is 'th') and open_els[0].namespace is NS_HTML
                        parse_error()
                loop
                        el = open_els.shift()
-                       if el.name is 'td' or el.name is 'th'
+                       if el.namespace is NS_HTML and (el.name is 'td' or el.name is 'th')
                                break
                clear_afe_to_marker()
                ins_mode = ins_mode_in_row
@@ -2439,13 +2662,13 @@ parse_html = (args) ->
        # 8.2.5.4.15 http://www.w3.org/TR/html5/syntax.html#parsing-main-intd
        ins_mode_in_cell = (t) ->
                if t.type is TYPE_END_TAG and (t.name is 'td' or t.name is 'th')
-                       if is_in_table_scope t.name
+                       if is_in_table_scope t.name, NS_HTML
                                generate_implied_end_tags()
-                               if open_els[0].name isnt t.name
-                                       parse_error
+                               unless (open_els[0].name is t.name) and open_els[0].namespace is NS_HTML
+                                       parse_error()
                                loop
                                        el = open_els.shift()
-                                       if el.name is t.name
+                                       if el.name is t.name and el.namespace is NS_HTML
                                                break
                                clear_afe_to_marker()
                                ins_mode = ins_mode_in_row
@@ -2455,10 +2678,10 @@ parse_html = (args) ->
                if t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'tbody' or t.name is 'td' or t.name is 'tfoot' or t.name is 'th' or t.name is 'thead' or t.name is 'tr')
                        has = false
                        for el in open_els
-                               if el.name is 'td' or el.name is 'th'
+                               if el.namespace is NS_HTML and (el.name is 'td' or el.name is 'th')
                                        has = true
                                        break
-                               if table_scopers[el.name]
+                               if table_scopers[el.name] is el.namespace
                                        break
                        if !has
                                parse_error()
@@ -2470,7 +2693,7 @@ parse_html = (args) ->
                        parse_error()
                        return
                if t.type is TYPE_END_TAG and (t.name is 'table' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead' or t.name is 'tr')
-                       if is_in_table_scope t.name # fixfull namespace
+                       if is_in_table_scope t.name, NS_HTML
                                close_the_cell()
                                process_token t
                        else
@@ -2497,36 +2720,37 @@ parse_html = (args) ->
                        ins_mode_in_body t
                        return
                if t.type is TYPE_START_TAG and t.name is 'option'
-                       if open_els[0].name is 'option'
+                       if open_els[0].name is 'option' and open_els[0].namespace is NS_HTML
                                open_els.shift()
                        insert_html_element t
                        return
                if t.type is TYPE_START_TAG and t.name is 'optgroup'
-                       if open_els[0].name is 'option'
+                       if open_els[0].name is 'option' and open_els[0].namespace is NS_HTML
                                open_els.shift()
-                       if open_els[0].name is 'optgroup'
+                       if open_els[0].name is 'optgroup' and open_els[0].namespace is NS_HTML
                                open_els.shift()
                        insert_html_element t
                        return
                if t.type is TYPE_END_TAG and t.name is 'optgroup'
-                       if open_els[0].name is 'option' and open_els[1].name is 'optgroup'
-                               open_els.shift()
-                       if open_els[0].name is 'optgroup'
+                       if open_els[0].name is 'option' and open_els[0].namespace is NS_HTML
+                               if open_els[1].name is 'optgroup' and open_els[0].namespace is NS_HTML
+                                       open_els.shift()
+                       if open_els[0].name is 'optgroup' and open_els[0].namespace is NS_HTML
                                open_els.shift()
                        else
                                parse_error()
                        return
                if t.type is TYPE_END_TAG and t.name is 'option'
-                       if open_els[0].name is 'option'
+                       if open_els[0].name is 'option' and open_els[0].namespace is NS_HTML
                                open_els.shift()
                        else
                                parse_error()
                        return
                if t.type is TYPE_END_TAG and t.name is 'select'
-                       if is_in_select_scope 'select'
+                       if is_in_select_scope 'select', NS_HTML
                                loop
                                        el = open_els.shift()
-                                       if el.name is 'select'
+                                       if el.name is 'select' and el.namespace is NS_HTML
                                                break
                                reset_ins_mode()
                        else
@@ -2536,7 +2760,7 @@ parse_html = (args) ->
                        parse_error()
                        loop
                                el = open_els.shift()
-                               if el.name is 'select'
+                               if el.name is 'select' and el.namespace is NS_HTML
                                        break
                        reset_ins_mode()
                        # spec says that this is the same as </select> but it doesn't say
@@ -2544,11 +2768,11 @@ parse_html = (args) ->
                        return
                if t.type is TYPE_START_TAG and (t.name is 'input' or t.name is 'keygen' or t.name is 'textarea')
                        parse_error()
-                       if is_in_select_scope 'select'
+                       unless is_in_select_scope 'select', NS_HTML
                                return
                        loop
                                el = open_els.shift()
-                               if el.name is 'select'
+                               if el.name is 'select' and el.namespace is NS_HTML
                                        break
                        reset_ins_mode()
                        process_token t
@@ -2569,7 +2793,7 @@ parse_html = (args) ->
                        parse_error()
                        loop
                                el = open_els.shift()
-                               if el.name is 'select'
+                               if el.name is 'select' and el.namespace is NS_HTML
                                        break
                        reset_ins_mode()
                        process_token t
@@ -2580,7 +2804,7 @@ parse_html = (args) ->
                                return
                        loop
                                el = open_els.shift()
-                               if el.name is 'select'
+                               if el.name is 'select' and el.namespace is NS_HTML
                                        break
                        reset_ins_mode()
                        process_token t
@@ -2637,7 +2861,7 @@ parse_html = (args) ->
                        parse_error()
                        loop
                                el = open_els.shift()
-                               if el.name is 'template' # fixfull check namespace
+                               if el.name is 'template' and el.namespace is NS_HTML
                                        break
                        clear_afe_to_marker()
                        template_ins_modes.shift()
@@ -2650,7 +2874,8 @@ parse_html = (args) ->
                        ins_mode_in_body t
                        return
                if t.type is TYPE_COMMENT
-                       insert_comment t, [open_els[0], open_els[0].children.length]
+                       first = open_els[open_els.length - 1]
+                       insert_comment t, [first, first.children.length]
                        return
                if t.type is TYPE_DOCTYPE
                        parse_error()
@@ -2659,7 +2884,9 @@ parse_html = (args) ->
                        ins_mode_in_body t
                        return
                if t.type is TYPE_END_TAG and t.name is 'html'
-                       # fixfull fragment case
+                       if flag_fragment_parsing
+                               parse_error()
+                               return
                        ins_mode = ins_mode_after_after_body
                        return
                if t.type is TYPE_EOF
@@ -2688,7 +2915,6 @@ parse_html = (args) ->
                        insert_html_element t
                        return
                if t.type is TYPE_END_TAG and t.name is 'frameset'
-                       # TODO ?correct for: "if the current node is the root html element"
                        if open_els.length is 1
                                parse_error()
                                return # fragment case
@@ -2705,7 +2931,6 @@ parse_html = (args) ->
                        ins_mode_in_head t
                        return
                if t.type is TYPE_EOF
-                       # TODO ?correct for: "if the current node is not the root html element"
                        if open_els.length isnt 1
                                parse_error()
                        stop_parsing()
@@ -2729,7 +2954,7 @@ parse_html = (args) ->
                        ins_mode_in_body t
                        return
                if t.type is TYPE_END_TAG and t.name is 'html'
-                       insert_mode = ins_mode_after_after_frameset
+                       ins_mode = ins_mode_after_after_frameset
                        return
                if t.type is TYPE_START_TAG and t.name is 'noframes'
                        ins_mode_in_head t
@@ -2755,6 +2980,7 @@ parse_html = (args) ->
                # Anything else
                parse_error()
                ins_mode = ins_mode_in_body
+               process_token t
                return
 
        # 8.2.5.4.23 http://www.w3.org/TR/html5/syntax.html#the-after-after-frameset-insertion-mode
@@ -2799,6 +3025,7 @@ parse_html = (args) ->
                        if t.name is 'script'
                                t.acknowledge_self_closing()
                                in_foreign_content_end_script()
+                               # fixfull
                        else
                                open_els.shift()
                                t.acknowledge_self_closing()
@@ -2828,8 +3055,7 @@ parse_html = (args) ->
                                return
                        loop # is this safe?
                                open_els.shift()
-                               cn = open_els[0]
-                               if is_mathml_text_integration_point(cn) or is_html_integration(cn) or cn.namespace is NS_HTML
+                               if is_mathml_text_integration_point(open_els[0]) or is_html_integration(open_els[0]) or open_els[0].namespace is NS_HTML
                                        break
                        process_token t
                        return
@@ -2840,9 +3066,11 @@ parse_html = (args) ->
                        in_foreign_content_end_script()
                        return
                if t.type is TYPE_END_TAG
-                       if open_els[0].name.toLowerCase() isnt t.name
+                       i = 0
+                       node = open_els[i]
+                       if node.name.toLowerCase() isnt t.name
                                parse_error()
-                       for node in open_els
+                       loop
                                if node is open_els[open_els.length - 1]
                                        return
                                if node.name.toLowerCase() is t.name
@@ -2850,6 +3078,8 @@ parse_html = (args) ->
                                                el = open_els.shift()
                                                if el is node
                                                        return
+                               i += 1
+                               node = open_els[i]
                                if node.namespace is NS_HTML
                                        break
                        ins_mode t # explicitly call HTML insertion mode
@@ -2938,50 +3168,55 @@ parse_html = (args) ->
 
        # 8.2.4.8 http://www.w3.org/TR/html5/syntax.html#tag-open-state
        tok_state_tag_open = ->
-               switch c = txt.charAt(cur++)
-                       when '!'
-                               tok_state = tok_state_markup_declaration_open
-                       when '/'
-                               tok_state = tok_state_end_tag_open
-                       when '?'
-                               parse_error()
-                               tok_cur_tag = new_comment_token '?'
-                               tok_state = tok_state_bogus_comment
-                       else
-                               if is_lc_alpha(c)
-                                       tok_cur_tag = new_open_tag c
-                                       tok_state = tok_state_tag_name
-                               else if is_uc_alpha(c)
-                                       tok_cur_tag = new_open_tag c.toLowerCase()
-                                       tok_state = tok_state_tag_name
-                               else
-                                       parse_error()
-                                       tok_state = tok_state_data
-                                       cur -= 1 # we didn't parse/handle the char after <
-                                       return new_text_node '<'
-               return null
+               c = txt.charAt(cur++)
+               if c is '!'
+                       tok_state = tok_state_markup_declaration_open
+                       return
+               if c is '/'
+                       tok_state = tok_state_end_tag_open
+                       return
+               if is_uc_alpha(c)
+                       tok_cur_tag = new_open_tag c.toLowerCase()
+                       tok_state = tok_state_tag_name
+                       return
+               if is_lc_alpha(c)
+                       tok_cur_tag = new_open_tag c
+                       tok_state = tok_state_tag_name
+                       return
+               if c is '?'
+                       parse_error()
+                       tok_cur_tag = new_comment_token '?' # FIXME right?
+                       tok_state = tok_state_bogus_comment
+                       return
+               # Anything else
+               parse_error()
+               tok_state = tok_state_data
+               cur -= 1 # we didn't parse/handle the char after <
+               return new_text_node '<'
 
        # 8.2.4.9 http://www.w3.org/TR/html5/syntax.html#end-tag-open-state
        tok_state_end_tag_open = ->
-               switch c = txt.charAt(cur++)
-                       when '>'
-                               parse_error()
-                               tok_state = tok_state_data
-                       when '' # EOF
-                               parse_error()
-                               tok_state = tok_state_data
-                               return new_text_node '</'
-                       else
-                               if is_uc_alpha(c)
-                                       tok_cur_tag = new_end_tag c.toLowerCase()
-                                       tok_state = tok_state_tag_name
-                               else if is_lc_alpha(c)
-                                       tok_cur_tag = new_end_tag c
-                                       tok_state = tok_state_tag_name
-                               else
-                                       parse_error()
-                                       tok_cur_tag = new_comment_token '/'
-                                       tok_state = tok_state_bogus_comment
+               c = txt.charAt(cur++)
+               if is_uc_alpha(c)
+                       tok_cur_tag = new_end_tag c.toLowerCase()
+                       tok_state = tok_state_tag_name
+                       return
+               if is_lc_alpha(c)
+                       tok_cur_tag = new_end_tag c
+                       tok_state = tok_state_tag_name
+                       return
+               if c is '>'
+                       parse_error()
+                       tok_state = tok_state_data
+                       return
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       return new_text_node '</'
+               # Anything else
+               parse_error()
+               tok_cur_tag = new_comment_token c
+               tok_state = tok_state_bogus_comment
                return null
 
        # 8.2.4.10 http://www.w3.org/TR/html5/syntax.html#tag-name-state
@@ -3311,7 +3546,7 @@ parse_html = (args) ->
                # Anything else
                tok_state = tok_state_script_data_escaped
                cur -= 1 # Reconsume
-               return new_character_token c
+               return new_character_token '<'
 
        # 8.2.4.26 http://www.w3.org/TR/html5/syntax.html#script-data-escaped-end-tag-open-state
        tok_state_script_data_escaped_end_tag_open = ->
@@ -3556,7 +3791,7 @@ parse_html = (args) ->
                        return
                if c is '>'
                        tok_state = tok_state_data
-                       return
+                       return tok_cur_tag
                if is_uc_alpha(c)
                        tok_cur_tag.attrs_a.unshift [c.toLowerCase(), '']
                        tok_state = tok_state_attribute_name
@@ -3689,7 +3924,7 @@ parse_html = (args) ->
        tok_state_self_closing_start_tag = ->
                c = txt.charAt(cur++)
                if c is '>'
-                       tok_cur_tag.flag 'self-closing'
+                       tok_cur_tag.flag 'self-closing', true
                        tok_state = tok_state_data
                        return tok_cur_tag
                if c is ''
@@ -3713,7 +3948,7 @@ parse_html = (args) ->
                else
                        val = txt.substr cur, (next_gt - cur)
                        cur = next_gt + 1
-               val = val.replace "\u0000", "\ufffd"
+               val = val.replace(new RegExp("\u0000", 'g'), "\ufffd")
                tok_cur_tag.text += val
                tok_state = tok_state_data
                return tok_cur_tag
@@ -3984,12 +4219,12 @@ parse_html = (args) ->
                        return
                if c is '"'
                        parse_error()
-                       tok_cur_tag.public_identifier = '' # FIXME should this go in @attrs or @text?
+                       tok_cur_tag.public_identifier = ''
                        tok_state = tok_state_doctype_public_identifier_double_quoted
                        return
                if c is "'"
                        parse_error()
-                       tok_cur_tag.public_identifier = '' # FIXME should this go in @attrs or @text?
+                       tok_cur_tag.public_identifier = ''
                        tok_state = tok_state_doctype_public_identifier_single_quoted
                        return
                if c is '>'
@@ -4016,12 +4251,12 @@ parse_html = (args) ->
                        return
                if c is '"'
                        parse_error()
-                       tok_cur_tag.public_identifier = '' # FIXME should this go in @attrs or @text?
+                       tok_cur_tag.public_identifier = ''
                        tok_state = tok_state_doctype_public_identifier_double_quoted
                        return
                if c is "'"
                        parse_error()
-                       tok_cur_tag.public_identifier = '' # FIXME should this go in @attrs or @text?
+                       tok_cur_tag.public_identifier = ''
                        tok_state = tok_state_doctype_public_identifier_single_quoted
                        return
                if c is '>'
@@ -4309,10 +4544,10 @@ parse_html = (args) ->
                else
                        val = txt.substr cur, (next_gt - cur)
                        cur = next_gt + 3
-               val = val.replace(new RegExp("\u0000", 'g'), "\ufffd") # fixfull spec doesn't say this
-               val = val.replace(new RegExp("\r\n", 'g'), "\n") # fixfull spec doesn't say this
-               val = val.replace(new RegExp("\r", 'g'), "\n") # fixfull spec doesn't say this
-               return new_character_token val # fixfull split
+               val = val.replace(new RegExp("\u0000", 'g'), "\ufffd")
+               if val.length > 0
+                       return new_character_token val # fixfull split
+               return null
 
        # 8.2.4.69 http://www.w3.org/TR/html5/syntax.html#consume-a-character-reference
        # Don't set this as a state, just call it
@@ -4331,26 +4566,39 @@ parse_html = (args) ->
                                if cur + 1 >= txt.length
                                        return '&'
                                if txt.charAt(cur + 1).toLowerCase() is 'x'
-                                       prefix = '#x'
+                                       base = 16
                                        charset = hex_chars
                                        start = cur + 2
                                else
                                        charset = digits
                                        start = cur + 1
-                                       prefix = '#'
+                                       base = 10
                                i = 0
                                while start + i < txt.length and charset.indexOf(txt.charAt(start + i)) > -1
                                        i += 1
                                if i is 0
                                        return '&'
+                               cur = start + i
                                if txt.charAt(start + i) is ';'
-                                       i += 1
-                               # FIXME This is supposed to generate parse errors for some chars
-                               decoded = decode_named_char_ref(prefix + txt.substr(start, i).toLowerCase())
-                               if decoded?
-                                       cur = start + i
-                                       return decoded
-                               return '&'
+                                       cur += 1
+                               else
+                                       parse_error()
+                               code_point = txt.substr(start, i)
+                               while code_point.charAt(0) is '0' and code_point.length > 1
+                                       code_point = code_point.substr 1
+                               code_point = parseInt(code_point, base)
+                               if unicode_fixes[code_point]?
+                                       parse_error()
+                                       return unicode_fixes[code_point]
+                               else
+                                       if (code_point >= 0xd800 and code_point <= 0xdfff) or code_point > 0x10ffff
+                                               parse_error()
+                                               return "\ufffd"
+                                       else
+                                               if (code_point >= 0x0001 and code_point <= 0x0008) or (code_point >= 0x000D and code_point <= 0x001F) or (code_point >= 0x007F and code_point <= 0x009F) or (code_point >= 0xFDD0 and code_point <= 0xFDEF) or code_point is 0x000B or code_point is 0xFFFE or code_point is 0xFFFF or code_point is 0x1FFFE or code_point is 0x1FFFF or code_point is 0x2FFFE or code_point is 0x2FFFF or code_point is 0x3FFFE or code_point is 0x3FFFF or code_point is 0x4FFFE or code_point is 0x4FFFF or code_point is 0x5FFFE or code_point is 0x5FFFF or code_point is 0x6FFFE or code_point is 0x6FFFF or code_point is 0x7FFFE or code_point is 0x7FFFF or code_point is 0x8FFFE or code_point is 0x8FFFF or code_point is 0x9FFFE or code_point is 0x9FFFF or code_point is 0xAFFFE or code_point is 0xAFFFF or code_point is 0xBFFFE or code_point is 0xBFFFF or code_point is 0xCFFFE or code_point is 0xCFFFF or code_point is 0xDFFFE or code_point is 0xDFFFF or code_point is 0xEFFFE or code_point is 0xEFFFF or code_point is 0xFFFFE or code_point is 0xFFFFF or code_point is 0x10FFFE or code_point is 0x10FFFF
+                                                       parse_error()
+                                               return from_code_point code_point
+                               return
                        else
                                for i in [0...31]
                                        if alnum.indexOf(txt.charAt(cur + i)) is -1
@@ -4390,11 +4638,31 @@ parse_html = (args) ->
                                        return '&'
                return # never reached
 
+       eat_next_token_if_newline = ->
+               old_cur = cur
+               t = null
+               until t?
+                       t = tok_state()
+               if t.type is TYPE_TEXT
+                       # definition of a newline depends on whether it was a character ref or not
+                       if cur - old_cur is 1
+                               # not a character reference
+                               if t.text is "\u000d" or t.text is "\u000a"
+                                       return
+                       else
+                               if t.text is "\u000a"
+                                       return
+               # not a "newline"
+               cur = old_cur
+               return
+
        # tree constructor initialization
        # see comments on TYPE_TAG/etc for the structure of this data
        txt = args.html
        cur = 0
-       doc = new Node TYPE_TAG, name: 'html', namespace: NS_HTML
+       doc = new Node TYPE_TAG, name: 'document', namespace: NS_HTML
+       doc.flag 'quirks mode', QUIRKS_NO # TODO bugreport spec for not specifying this
+       fragment_root = null # fragment parsing algorithm returns children of this
        open_els = []
        afe = [] # active formatting elements
        template_ins_modes = []
@@ -4408,21 +4676,105 @@ parse_html = (args) ->
        temporary_buffer = null
        pending_table_character_tokens = []
        head_element_pointer = null
-       flag_fragment_parsing = false # parser originally created as part of the html fragment parsing algorithm (fragment case)
-       context_element = null # FIXME initialize from args.fragment http://www.w3.org/TR/html5/syntax.html#parsing-html-fragments
+       flag_fragment_parsing = false
+       context_element = null
+       prev_node_id = 0 # just for debugging
 
        # tokenizer initialization
        tok_state = tok_state_data
 
-       if args.name is "one_that_breaks #1"
-               throw "hi" # console.log "hi"
-       # proccess input
+       parse_init = ->
+               # fragment parsing (text arg)
+               if args.fragment?
+                       # this handles the fragment from the tests in the format described here:
+                       # https://github.com/html5lib/html5lib-tests/blob/master/tree-construction/README.md
+                       f = args.fragment
+                       ns = NS_HTML
+                       if f.substr(0, 5) is 'math '
+                               f = f.substr 5
+                               ns = NS_MATHML
+                       else if f.substr(0, 4) is 'svg '
+                               f = f.substr 4
+                               ns = NS_SVG
+                       t = new_open_tag f
+                       context_element = token_to_element t, ns
+                       context_element.document = new Node TYPE_TAG, name: 'document', namespace: NS_HTML
+                       context_element.document.flag 'quirks mode', QUIRKS_NO
+               # fragment parsing (Node arg)
+               if args.context?
+                       context_element = args.context
+
+               # http://www.w3.org/TR/html5/syntax.html#parsing-html-fragments
+               # fragment parsing algorithm
+               if context_element?
+                       flag_fragment_parsing = true
+                       doc = new Node TYPE_TAG, name: 'html', namespace: NS_HTML
+                       # search up the tree from context, to try to find it's document,
+                       # because this file only puts a "document" property on the root
+                       # element.
+                       old_doc = null
+                       el = context_element
+                       loop
+                               if el.document?
+                                       old_doc = el.document
+                                       break
+                               if el.parent
+                                       el = el.parent
+                               else
+                                       break
+                       if old_doc
+                               doc.flag 'quirks mode', old_doc.flag 'quirks mode'
+                       # set tok_state
+                       if context_element.namespace is NS_HTML
+                               switch context_element.name
+                                       when 'title', 'textarea'
+                                               tok_state = tok_state_rcdata
+                                       when 'style', 'xmp', 'iframe', 'noembed', 'noframes'
+                                               tok_state = tok_state_rawtext
+                                       when 'script'
+                                               tok_state = tok_state_script_data
+                                       when 'noscript'
+                                               if flag_scripting
+                                                       tok_state = tok_state_rawtext
+                                       when 'plaintext'
+                                               tok_state = tok_state_plaintext
+                       fragment_root = new Node TYPE_TAG, name: 'html', namespace: NS_HTML
+                       doc.children.push fragment_root
+                       fragment_root.document = doc
+                       open_els = [fragment_root]
+                       if context_element.name is 'template' and context_element.namespace is NS_HTML
+                               template_ins_modes.unshift ins_mode_in_template
+                       # fixfull create token for context (it should have it's original one already)
+                       reset_ins_mode()
+                       # set form_element pointer... in the foreign doc?!
+                       el = context_element
+                       loop
+                               if el.name is 'form' and el.namespace is NS_HTML
+                                       form_element_pointer = el
+                                       break
+                               if el.parent
+                                       el = el.parent
+                               else
+                                       break
+
+               # text pre-processing
+               # FIXME check http://www.w3.org/TR/html5/syntax.html#preprocessing-the-input-stream
+               txt = txt.replace(new RegExp("\r\n", 'g'), "\n") # fixfull spec doesn't say this
+               txt = txt.replace(new RegExp("\r", 'g'), "\n") # fixfull spec doesn't say this
+
        # http://www.w3.org/TR/html5/syntax.html#tree-construction
-       while flag_parsing
-               t = tok_state()
-               if t?
-                       process_token t
-                       # fixfull parse error if has self-closing flag, but it wasn't acknolwedged
+       parse_main_loop = ->
+               while flag_parsing
+                       t = tok_state()
+                       if t?
+                               process_token t
+                               # fixfull parse error if has self-closing flag, but it wasn't acknolwedged
+               return
+       parse_init()
+       parse_main_loop()
+
+       if flag_fragment_parsing
+               return fragment_root.children
        return doc.children
 
 serialize_els = (els, shallow, show_ids) ->
@@ -4434,7 +4786,6 @@ serialize_els = (els, shallow, show_ids) ->
                serialized += t.serialize shallow, show_ids
        return serialized
 
-# TODO export TYPE_*
 module.exports.parse_html = parse_html
 module.exports.debug_log_reset = debug_log_reset
 module.exports.debug_log_each = debug_log_each
@@ -4445,3 +4796,6 @@ module.exports.TYPE_DOCTYPE = TYPE_DOCTYPE
 module.exports.NS_HTML = NS_HTML
 module.exports.NS_MATHML = NS_MATHML
 module.exports.NS_SVG = NS_SVG
+module.exports.QUIRKS_NO = QUIRKS_NO
+module.exports.QUIRKS_LIMITED = QUIRKS_LIMITED
+module.exports.QUIRKS_YES = QUIRKS_YES