When XWikiApplication.resolveDocumentsNames is called,
it list all
document and one by one look if the document name is between "[" and
"]", if so it consider document name as sql matching string usable
with "like". So for example you will add "[XWiki.%]" if you want to
add all documents in the XWiki space to the application document list.
Nice feature!
It'll be more powerful than a new space list considering filters like
"AppClasses.%Class" which make the export more "secured" (no more
AppClasses.Test for example ;).
I'm -1 for the use of % since special chars are prefixed with % in urls.
I'd be +1 for the brackets free syntax.