bash LC_COLLATE or LC_ALL set “C” not sort in dictionary order.

[Robert Bonomi]

> From owner-freebsd-questions at freebsd.org  Tue Jan 31 05:45:47 2012
> Date: Tue, 31 Jan 2012 04:45:36 -0800
> From: Edward Martinez <eam1edward at gmail.com>
> To: FreeBSD Questions <freebsd-questions at freebsd.org>
> Subject: bash  LC_COLLATE or LC_ALL set =?windows-1252?q?=93C=94_not__sort?=
>  =?windows-1252?q?_in_dictionary_order=2E?=
>
>
>
>
>      Hi,
>
>      Been trying to get BASH to sort set characters in  dictionary order.
>     I typed "locale" and it shows LC_COLLATE and LC_ALL are set to "C" 
> thought that was enough to work,
>     however when i type metacharacters:  set character; any character, 
> something like this:
>
>         ls  [a-cx-y]*
>
>      bash does not sort in dictionary order; file   "Binarc" does not  
> list.
>

*OF*COURSE* it doesn't.  Unix is _case_sensitive_.  You specified a lower-
case only (in the C locale) pattern.  Naturally, it doesn't match a file 
with an upper-case character in it.

Note: in the 'C' locale, characters are sorted on the underlying byte value.
Thus you will get all the upper-case matches before any lower-case match.

To get upper-and-lower case files in the C locale, you will have to use:
          ls [A-CX-Ya-cx-y]* 

IF you speciy a different charset for collating, you _may_ get upper/lower
case characters sorted adjacently.  See the specifications for the charset
in question.