+;;; bug reported by Paul Dietz on sbcl-devel: unquoted lambda lists
+;;; were leaking the SB-IMPL::BACKQ-COMMA implementation.
+(assert (equal
+ (with-output-to-string (s)
+ (write '`(foo ,x) :stream s :pretty t :readably t))
+ "`(FOO ,X)"))
+(assert (equal
+ (with-output-to-string (s)
+ (write '`(foo ,@x) :stream s :pretty t :readably t))
+ "`(FOO ,@X)"))
+#+nil ; '`(foo ,.x) => '`(foo ,@x) apparently.
+(assert (equal
+ (with-output-to-string (s)
+ (write '`(foo ,.x) :stream s :pretty t :readably t))
+ "`(FOO ,.X)"))
+(assert (equal
+ (with-output-to-string (s)
+ (write '`(lambda ,x) :stream s :pretty t :readably t))
+ "`(LAMBDA ,X)"))
+(assert (equal
+ (with-output-to-string (s)
+ (write '`(lambda ,@x) :stream s :pretty t :readably t))
+ "`(LAMBDA ,@X)"))
+#+nil ; see above
+(assert (equal
+ (with-output-to-string (s)
+ (write '`(lambda ,.x) :stream s :pretty t :readably t))
+ "`(LAMBDA ,.X)"))
+(assert (equal
+ (with-output-to-string (s)
+ (write '`(lambda (,x)) :stream s :pretty t :readably t))
+ "`(LAMBDA (,X))"))
+;;; more backquote printing brokenness, fixed quasi-randomly by CSR.
+;;; NOTE KLUDGE FIXME: because our backquote optimizes at read-time,
+;;; these assertions, like the ones above, are fragile. Likewise, it
+;;; is very possible that at some point READABLY printing backquote
+;;; expressions will have to change to printing the low-level conses,
+;;; since the magical symbols are accessible though (car '`(,foo)) and
+;;; friends. HATE HATE HATE. -- CSR, 2004-06-10
+(assert (equal
+ (with-output-to-string (s)
+ (write '``(foo ,@',@bar) :stream s :pretty t))
+ "``(FOO ,@',@BAR)"))
+(assert (equal
+ (with-output-to-string (s)
+ (write '``(,,foo ,',foo foo) :stream s :pretty t))
+ "``(,,FOO ,',FOO FOO)"))
+(assert (equal
+ (with-output-to-string (s)
+ (write '``(((,,foo) ,',foo) foo) :stream s :pretty t))
+ "``(((,,FOO) ,',FOO) FOO)"))
+\f
+;;; SET-PPRINT-DISPATCH should accept function name arguments, and not
+;;; rush to coerce them to functions.
+(set-pprint-dispatch '(cons (eql frob)) 'ppd-function-name)
+(defun ppd-function-name (s o)
+ (print (length o) s))
+(let ((s (with-output-to-string (s)
+ (pprint '(frob a b) s))))
+ (assert (position #\3 s)))
+\f