using the interfaces in ctype.h

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

I have reread the April 2008 thread with the same subject, e.g.,

  http://mail-index.netbsd.org/tech-userlevel/2008/04/17/msg000354.html

which basically says, use int, not char, as argument for the c-type functions.

Currently we have lex 2.5.4. Cunningly lex 2.5.6 starts using (in scanopt.c)
ctype calls with chars, e.g.,

                const char *p, *pname;  
...
                        if (*p == '=' || isspace (*p)


What should I do?

(Ignore, as it seems that *p != EOF ?)
(misc.c seems to used unsigned char)

Cheers,

Patrick