Wiki syntax entered in the Wysiwyg editor needs to be escaped

We need to escape wiki syntax so that copy pasting of typing of big text is not interpreted as syntax.

For example:

references using [1] are considered as links
___________ used to proposing filling text is considered as underscore

etc...

We want to escape:

[ ] * - ~ _ 1 (as the first char of a line)

We won't escape { (to support macros in wyswiyg) < > (to support html)
In the future we might include buttons to include macros and html snipplets and then escape typing of these chars