[slime-devel] CMUCL unicode strings breaks slime

[Raymond Toy]

This has been happening for some time, and it's annoying enough that I
want to fix it.  With CMUCL 20b and slime 2010-09-20, try the following:

(defvar *s* (make-string 4))
*s*
(setf (lisp:codepoint *s* 0) #x10000))

Upto now, everything is ok.  Now print the string:

*s*

At this point, the string is displayed, with a rectangular box for the
codepoint #x10000 followed by two ^@ for the two null characters.
(Recall that unicode strings in cmucl are utf-16 strings, so the first
two elements of *s* are the surrogate pair for #x10000.)

I get an error from xemacs about itimer:

itimer "run-at-time<2>" signaled: (wrong-type-argument listp write-string)
Wrong type argument: listp, :write-string

And *slime-events* buffer is kind of garbled:

(:emacs-rex
 (swank:listener-eval "(print *s*)\n")
 "COMMON-LISP-USER" :repl-thread 18)
(:write-string "\n\"𐀀