Hello,
I'm loath to add anything to (ice-9 q) since I find the names, and
the lack of a distinct type, less than satisfactory.
However, if you are going to add them, I'd recommend sticking with the
q- prefix. So, q-append and q-append!. Keeping the naming consistent
means one less exception to remember.
Also, I think it might be wise to add a list->q and q->list, with the
obvious simple implementations