The regular expression in the exclude property of a loader configuration can be used to exclude file paths, but the paths provided to the regular expressions are operating system dependent, e.g. on Windows the paths are in the form of "a\b\c" and on Unix-based operating systems "a/b/c". This makes writing correct regular expressions more difficult (and especially to test them).

My proposal is to always supply paths in the Unix style to the regular expression (e.g. "a/b/c"), and to document this clearly.