Item1674: Protect other plugins' xml-like markup

Priority:	CurrentState:	AppliesTo:	Component:	WaitingFor:
Enhancement	Waiting for Release	Extension	WysiwygPlugin

WysiwygPlugin should provide a way to protect other plugins' xml-like markup, with the WYSIWYG_PROTECT class, so that editing with a wysiwyg editor does not mess up the formatting and does not convert characters like > to entities.

As an example of what should be protected, DirectedGraphPlugin uses markup like this:

<dot engine="neato">
digraph G
{
  A -> B;
  C -> B;
  A -> D;
  B -> D;
}
</dot>

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This change was included in a release of WysiwygPlugin. Item1770 is the continuation of this task after the release.

-- MichaelTempest - 24 Jun 2009