Joseph Wright writes: > As I said in my other mail, at the moment xparse is about LaTeX2e > conventions using LaTeX3 ideas. So there is no danger of dropping > trailing optional arguments at the moment! I'd also note that there is > an outstanding question on the coffin code about whether optional > arguments, a keyval approach or something in between is best. yeah there is :-) I'm dead against it .. no not really. But I'm not really in favor of it either. But not here under this subject line > So I certainly don't regard this question as resolved one way or the other > at present: at the moment, I'm just worried about spaces :-) very wise. :-))