After reading the documentation again, I realise that it is actually complete (i.e. no arguments implies --tmpdir).
I would, however, regard the documentation to be structured in a way that makes it hard to find the information about TMPDIR. That is, searching for TMPDIR doesn't find the answer. You need to carefully read that no arguments implies --tmpdir and that this implies the use of TMPDIR. A separate discussion of TMPDIR would be more helpful. Thanks... peace & happiness, martin
