Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?

[Aharon Robbins]

> Date: Thu, 27 Jun 2013 15:27:40 +0200
> From: Paolo Bonzini <bonzini@gnu.org>
> Subject: Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?
>
> Right now only gawk is different from the others, and not in a very
> clean manner:
>
> #ifndef GAWK
>               /* Defer to the system regex library about the meaning
>                  of range expressions.  */
>               regex_t re;
>               char pattern[6] = { '[', 0, '-', 0, ']', 0 };
>               char subject[2] = { 0, 0 };
>               c1 = c;
>               if (case_fold)
>                 {
>                   c1 = tolower (c1);
>                   c2 = tolower (c2);
>                 }
>
>               pattern[1] = c1;
>               pattern[3] = c2;
>               regcomp (&re, pattern, REG_NOSUB);
>               for (c = 0; c < NOTCHAR; ++c)
>                 {
>                   if ((case_fold && isupper (c))
>                       || (MB_CUR_MAX > 1 && btowc (c) == WEOF))
>                     continue;
>                   subject[0] = c;
>                   if (regexec (&re, subject, 0, NULL, 0) != REG_NOMATCH)
>                     setbit_case_fold_c (c, ccl);
>                 }
>               regfree (&re);
> #else
>               c1 = c;
>               if (case_fold)
>                 {
>                   c1 = tolower (c1);
>                   c2 = tolower (c2);
>                 }
>               for (c = c1; c <= c2; c++)
>                 setbit_case_fold_c (c, ccl);
> #endif
>
> I would suggest distros to rip out the #else part of this #ifndef.

And I wouldn't, but as I have no control over the distros, I'm
not going to worry about it.

All I know is that with the non-gawk case, gawk fails its test suite,
and I've given up discussing it.

Arnold