On Mon, Oct 27, 2008 at 1:08 PM, Lars Hellström wrote:

> Hmm... Isn't
>  \quark_if_no_value:nFT{##2}
> equivalent to
>  \quark_if_no_value:nTF{##2}\use_arg_ii:nn\use_arg_i:nn
> ?
> This neither reads the TF arguments twice, nor does the quark test manually,
> but perhaps there are stylistic objections to it.

True, it gets the job done. As you indicate, stylistically it does not
look particularly nice. I am not claiming the FT variant is perfect
but at least it is quite clear what it does and clarity of the code is
important. However, I guess it is not particular important to avoid
reading the arguments twice so we could just drop this FT variant
completely.

Cheers,
-- 
Morten