XYplorer 10.50 has been released on 25-Oct-2011. Here's a quick introduction to the main new features:
In the Info Panel (F12), Find Files | Contents tab you find a new Mode selector. Select RegExp and the pattern you enter into the contents box is processed as a Regular Expression.
Here are some examples:
This is achieved by the new variable <prop ...> which functionally corresponds to the scripting function property(). It returns any available Shell Property value of the current item.
Syntax: <prop property_index_or_name>
Using scripting you can e.g. show the Size, Type, and Version of the current item like this: msg "<prop #1>, <prop #2>, <prop fileversion>"; As you can see, numerical as well as verbal indices are supported.
Here are some Batch Rename Previews that show the applied pattern and the results:
Note: Which particular property is available (and how it is called!) depends on the file, the file type, and on your Windows version. You have to experiment to find out what works. For starters here a list of property verbs ("Property name", left column): http://msdn.microsoft.com/en-us/library/bb776504(VS.85).aspx
And it works as expected. :)