So who is really using XREF with CLISP for WHO-CALLS etc? Anyone?
IMO the really nice feature of XREF is PRINT-CALLER-TREES which shows you the subroutine tree structure of a program. I will be surprised if WHO-CALLS via SLIME is popular since XREF is mostly batch-mode and won't typically have an update to date database to make impromptu queries to. (There is no hook into the compiler for updates).
XREF lovers please speak up if I am mistaken :-)
P.S. Getting SLIME into Debian proper is absolutely a Very Good Thing and I am very grateful to Peter for his patience!