While trying to enhance one of my packages, I wondered whether it is possible to iterate through a directory's file list in expl3 (I've read in
l3interfaces.pdf that expl3 has some IO facilities, but they seem unable to scan directories).
The use case is the following: I have one main document. This shall include some special files generated with an external application and stored in directories outside the path.
So the question is: How would an
expl3 "directory scanner" (I only want to specify the directory) look or do I have to use Lua for this purpose?