[slime-devel] CMUCL unicode strings breaks slime

Helmut Eller heller at common-lisp.net
Fri Oct 1 05:46:47 UTC 2010


* Raymond Toy [2010-10-01 00:11] writes:

> 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.)

What is the length of *s* or (prin1-to-string *s*) now?
Should it be 3 not 4?

Helmut





More information about the slime-devel mailing list