Mark Hammond <mhammond@users.sourceforge.net> added the comment: FWIW, I think the rules are fairly well explained in the comments in PC/getpathp.c; last time I looked at this, the only thing I couldn't really decide was where in the official docs these comments should be put (after reformatting and minor rewording etc) ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue459007> _______________________________________