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:- use_module(library(filesex)).(can be autoloaded)
false), recurse into subdirectories
true(default), follow symbolic links.
error. Default is
warning. Errors notably happen if a directory is unreadable or a link points nowhere.
true(default), also return hidden files.
This predicate is safe against cycles introduced by symbolic links to directories.
The idea for a non-deterministic file search predicate comes from Nicos Angelopoulos.