So I have a file named, without quotes, "/tmp/test/Funky [filename].txt"
The problem here is two fold. Spaces and '['. Spaces are solved by double-quoting the filename in the %files section, and normally the '[' can be escaped by doing [\. However, when combined, this doesn't work:
The error is: File not found by glob: .../BUILD/tmp/test/Funky [\filename].txt