bug#16731: 24.3.50; Latin small letter sharp s is not considered lower-case

[Andreas Röhler]

Am 13.02.2014 18:39, schrieb Eli Zaretskii:
> > From: Stefan Monnier <monnier@iro.umontreal.ca>
> > Cc: andreas.roehler@easy-emacs.de,  16731@debbugs.gnu.org
> > Date: Thu, 13 Feb 2014 12:10:49 -0500
> >
> > >   /* True if C is upper case.  */
> > > -INLINE bool uppercasep (int c) { return downcase (c) != c; }
> > > +INLINE bool uppercasep (int c)
> > > +{
> > > +  Lisp_Object val;
> > > +
> > > +  if (downcase (c) != c)
> > > +    return true;
> > > +
> > > +  if (NILP (Vunicode_category_table))
> > > +    return false;
> > > +
> > > +  val = CHAR_TABLE_REF (Vunicode_category_table, c);
> > > +  return INTEGERP (val) && XINT (val) == UNICODE_CATEGORY_Lu;
> > > +}
> >
> > Doesn't sound too bad.  But it does beg the question: why check
> > (downcase (c) != c) at all, then?
>
> Because it's faster, and for most characters will do the job.

Maybe I'm missing the point: all change needed is not to store "ß" into the 
uppercase-table.
Why not store nil there instead?