Hi ASDF developers,

I wanna ask a question about the specification of source-registry.

ASDF doesn't allow relative pathnames in source-registry string intentionally.
https://github.com/drmeister/asdf/blob/master/source-registry.lisp#L136

It seems the line has long history, however, why it won't accept relative pathnames?

I think it would be useful when adding the current working directory to the source registry like:

# doesn't work
CL_SOURCE_REGISTRY=. sbcl --eval '(princ (asdf:system-source-directory :myapp))'

Thanks,
Eitaro Fukamachi