Scripted Math —...

<..void barsIntoFenced(dom)..>

static void barsIntoFenced(Node dom) {
    Node rightBarNode = null;
    Node mrowNode = dom.getFirstChild();
    Node mrowChild = mrowNode.getLastChild();
    while( mrowChild != null ){
       if(
            mrowChild.getNodeName().equals("msub")
            ||
            mrowChild.getNodeName().equals("msup")
            ||
            mrowChild.getNodeName().equals("msubsup")
       ){
          Node firstChild = mrowChild.getFirstChild();
          if(
              (firstChild.getChildNodes().getLength() == 1)
              &&
              firstChild.getTextContent().equals( "|" )
          ){
             rightBarNode = mrowChild;
       }  }
       else
       if(
          (rightBarNode != null)
          &&
          mrowChild.getNodeName().equals("mo")
          &&
          (mrowChild.getChildNodes().getLength() == 1)
          &&
          mrowChild.getTextContent().equals( "|" )
       ){
         if(mrowChild.getNextSibling() != rightBarNode){
             <.set mfenced sub,sup .>
         }
         rightBarNode = null;
       }
       mrowChild = mrowChild.getPreviousSibling();
}  }

-_-_-

               A + |B|^2 + C
<mrow>
  <mi>A</mi>
  <mo class="MathClass-bin">+</mo>
  <mo class="MathClass-rel">|</mo>      #
  <mi>B</mi>                            #
  <msup>                                #
    <mrow>                              #
      <mo class="MathClass-rel">|</mo>  #
    </mrow>                             #
    <mrow>                              #
      <mn>2</mn>                        #
    </mrow>                             #
  </msup>                               #
  <mo class="MathClass-bin">+</mo>
  <mi>C</mi>
</mrow>

<..set mfenced sub,sup ..>

rightBarNode.removeChild( rightBarNode.getFirstChild() );
Node sub = rightBarNode.getFirstChild();
Node mfenced = ((Document) dom).createElement( "mfenced" );
rightBarNode.insertBefore( mfenced, sub );
((Element) mfenced).setAttribute("open","|");
((Element) mfenced).setAttribute("close","|");
((Element) mfenced).setAttribute("separator","");
Node node = mrowChild.getNextSibling();
while( node != rightBarNode ){
    Node next = node.getNextSibling();
    mrowNode.removeChild( node );
    mfenced.appendChild( node );
    node = next;
}
mrowNode.removeChild( mrowChild );
mrowChild = mrowNode.getLastChild();

-_-_-

5 Scripted Math —...—