problem with ls, not show a correct list

[Garrett Wollman]

In article <3a8b8ade882d1486aa41b448a9c83b6c at i805.com.br> you write:
>
>
>   It's a terrible!!!! Is it a locale bug? Look!
>
>% locale
>LANG=pt_BR.UTF-8
>% touch E
>% ls -l [a-z]*
>-rw-r--r--  1 rizzo  wheel  0  7 abr 02:06 E

No, it's the specification of how character ranges in glob(3) and
fnmatch(3) work.  In effect, character ranges like [a-z] must be
treated as ranges of *collating elements*, not byte ranges, and in
your locale, <a> and <A> are considered to be the same collating
element, so [a-z] matches both upper- and lower-case Latin letters.
This is documented, very obliquely, in sh(1), which also tells you the
workaround:

     a character class.  A character class matches any of the characters
     between the square brackets.  A locale-dependent range of characters may
     be specified using a minus sign.  A named class of characters (see
     wctype(3)) may be specified by surrounding the name with `[:' and `:]'.
     For example, `[[:alpha:]]' is a shell pattern that matches a single let-
     ter.

So, to match only lower-case letters regardless of your current locale
setting, you must use the correct character class:

	$ locale
	LANG=pt_BR.UTF-8
	LC_CTYPE="pt_BR.UTF-8"
	LC_COLLATE="pt_BR.UTF-8"
	LC_TIME="pt_BR.UTF-8"
	LC_NUMERIC="pt_BR.UTF-8"
	LC_MONETARY="pt_BR.UTF-8"
	LC_MESSAGES="pt_BR.UTF-8"
	LC_ALL=
	$ ls
	D       E       F       a       b       c
	$ ls [[:lower:]]*
	a       b       c

The same applies to character class ranges in regular expressions, not
just glob(3) patterns.

-GAWollman