EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 3 of DIV > BODY > HTML > #document
EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: shouldDeleteDOMRange:range from 4 of #text > DIV > DIV > BODY > HTML > #document to 7 of #text > DIV > DIV > BODY > HTML > #document
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 4 of #text > DIV > DIV > BODY > HTML > #document to 4 of #text > DIV > DIV > BODY > HTML > #document toDOMRange:range from 4 of #text > DIV > DIV > BODY > HTML > #document to 7 of #text > DIV > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
Tests: 
Option-delete when no typing command is open, then undo.
Expected Results: 
It should like this, with the word "two" selected: 
one two three four
one two three four
DeleteWord: <div id="test" class="editing">one &nbsp;three four</div>
execUndoCommand: <div id="test" class="editing">one two three four</div>