New Vocabularies Solution

resetting appropriately:

• if current node is in the mathml namespace and is one of <mi>, <mo>, <mn>, <ms>, <mtext>, "in math content"
• if current node is in the mathml namespace, "in math"
• if current node is in the svg namespace, "in svg"

"in body":

• "math" element - switch to "in math"
• "svg" element - switch to "in svg"

"in math":

• comment
  1. insert comment

• doctype
  1. parse error

• text:
• start tag for: <mglyph>
  1. imply <mtext>
  2. reprocess

• start tag for: <mspace>, <maligngroup>, <malignmark>
  1. check for implied math tags
  2. insert element for token, assume void element

• other start tag:
• end tag:
  or
  :
  1. parse error
  2. imply </math>
  3. switch to "in body"
  4. reprocess

• other end tag
  1. if matching element is in scope:
     1. parse error
     2. imply </math>
     3. reprocess
  2. otherwise:
     1. parse error
     2. ignore

check for implied math tags means:

1. if current node is <mmultiscripts>:
   1. if the token is a <mprescripts> and there's an even number or child elements in the current node, imply a <none> element.
   2. abort these steps.
2. if current node is <mtable>:
   1. if the token is either <mtr> or <mabelledtr>, abort these steps
   2. otherwise, imply an </mtable>
   3. restart these steps.
3. if current node is <mtr>:
   1. if the token is an <mtd>, abort these steps
   2. otherwise, imply an </mtr>
   3. restart these steps.
4. otherwise, if current node is one of <mfrac>, <mroot>, <msub>, <msup>, <munder>, <mover>: let N equal 2
5. otherwise, if current node is one of <msubsup>, <munderover>: let N equal 3
6. otherwise, abort these steps.

"in math content":

• start tag for: <malignmark>
  1. insert element for token, assume void element
• otherwise:
  1. treat as "in body"