ValentinaEscapeString clarification

[Tim Davis]

> Only single quote should be escaped.
> Tim, you can now use Valentina global function
>     ValentinaEscapeString()

Ruslan,
    Ok, now I'm confused. Here are the conversions of the new function 
(in V4RB).

RegEx true:
'  to  \'
(  to  \(
)  to  \)
.  to  \.
?  to  \?
[  to  \[
]  to  \]

RegEx false:
'  to  \'
(  to  Empty
)  to  Empty
.  to  Empty
?  to  Empty
[  to  Empty
]  to  Empty

I thought that characters other than single quotes were fine. Why are 
those characters associated with RegEx removed?

Tim Davis