signed vs unsigned pointer warning

[Paul Koning]

>>>>> "Matthias" == Matthias B <msbREMOVE-THIS@winterdrache.de> writes:

 Matthias> On Fri, 8 Oct 2004 13:31:53 -0400 (EDT) terra@gnome.org
 Matthias> (Morten Welinder) wrote:

 >> Why can't an implementation define isxxx(c) to return something
 >> like table_lookup[(unsigned)(c)] ?
 >> 
 >> Because isxxx needs to work with EOF, typically -1.

 Matthias> So what? On my system all the is* calls return the same
 Matthias> thing for EOF as they do for 255, namely 0. Is there an
 Matthias> actual locale where any of the is*() calls returns non-zero
 Matthias> for 255? In any case, for the usual western locales, your
 Matthias> argument is invalid.

Not true!  Character code 255 is a lowecase letter.  Certainly it is
in iso-8859-1 (western europe) and probably in many of the other 8859
flavors. 

    paul