Aside from slime/contrib/swank-presentations.lisp
(or (and (typep stream 'sb-impl::indenting-stream) (slime-stream-p (sb-impl::indenting-stream-stream stream))) (and (typep stream (find-symbol "PRETTY-STREAM" 'sb-pretty)) (find-symbol "ENQUEUE-ANNOTATION" 'sb-pretty) (not *use-dedicated-output-stream*) (slime-stream-p (sb-pretty::pretty-stream-target stream)))))
SB-IMPL::INDENTING-STREAM is, as far as I can tell, otherwise unused.
Does someone actually use them? Any objections to deleting them? (And the first leg of the OR in Slime.)
Cheers,
-- Nikodemus