CLONE -The current VariableSubstitutor missing recursive substitutes

Usually expression contains several nested levels of variables, that needs more then one iterations to get the wanted result .
For instance:

<variable name="Folder.bin" value="@{MyFolder}/bin" condition="OS_IS_UNIX.Condition"/>
<variable name="Folder.Main" value="@{Product.Folder}" condition="OS_IS_WINDOWS.Condition"/>
<variable name="Folder.Main" value="$USER_HOME" condition="OS_IS_UNIX.Condition"/>

Therefor we need set of new methods do it

For example:

public String recursiveSubstitute(String exp)

public String substituteFragmentation(String exp, String chr)
{
1. Checks betweens @{<name>}abcd..., so removes the first char @
2. Checks for the same character before and after the name like %<name>% or @<name>@abcd...
3. Checks after single char @<name>abcd...
4. non of them ...
}

vois <some of the above methods>(String name)
{
1. We translate the "name" to new exp'
2. We perform recursive checking on this new exp' with recursiveSubstitute() method
}