Expose mode: strange failures.

[Michaël Cadilhac]

On Wed, Dec 4, 2013 at 10:43 PM, Michaël Cadilhac <michael at cadilhac.name> wrote:

> A second crash I got came from a window with German words in the
> title.  The reported error was:
> Processing "genug - Wörterbuch Deutsch-Englisch - WordReference.com -
> Mozilla Firefox": type=NORMAL #<XLIB:WINDOW :0 1800075>
> CLFSWM Error: The value #\LATIN_SMALL_LETTER_O_WITH_DIAERESIS
>               is not of type
>                 BASE-CHAR..
> Reinitializing...

For this crash, which was caused by the shuffle key rather than
Expose, a SBCL/CLISP clash may be to be blamed, namely:

  In CLISP, BASE-CHAR and CHARACTER are equivalent and include all of
  Unicode (16 bit)

and in SBCL:

  With the :SB-UNICODE on *features* (the default), however, base-char
and character are distinct: character encompasses the set of all
1114112 characters, while base-char represents the set of the first
128 characters.

I don't know where this comes in play explicitly, if it does, in
CLFSWM, but switching to CLISP fixes the crash.  In shuffle mode, the
accents are displayed correctly, while in Expose, they are replaced by
question marks; apart from this inconsistency, it works.  Let's hope
it automagically fixed the other crash I had --- though some manual
type-check in the code would prevent a crash.

Happy hacking,
M.