I'm trying to use the snippet of code below to change a isspace c call, to
the palm TxtCharIsSpace call.  When I do, I get the undefined identifier
message.  I have no idea where the _CN|_SP|_XS even comes from.  Any help?
Thanks
Andrew
{
    static char last = ' ';
    register int ch;
    register char *cp = token;
    register int hash = 0;
    register struct tok *tp;

    *cp = 0;
    ch = last;
    /* skip all white space */
    while(isspace(ch) && ch != -1){
     ...
    }
<SNIP>

isspace( int ch )
{
 return( TxtCharIsSpace( (char)ch ) );
}


<ERROR>
Error   : undefined identifier '_CN'
convert.c line 96   ((TxtCharAttr((char)ch) & (_CN|_SP|_XS)) != 0)






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