[Bug 208117] equivalence classes do NOT work at all

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208117

            Bug ID: 208117
           Summary: equivalence classes do NOT work at all
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: gnu
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: geodelles at yahoo.com

% echo á | grep '[[=a=]]'
% echo ô | grep '[[=o=]]'
% 

On Linux to compare:

$ echo á | grep '[[=a=]]'
á
$ echo ô | grep '[[=o=]]'
ô
$

See the IEEE Std:

«9.3.5 RE Bracket Expression
...It consists of one or more expressions: collating elements, collating
symbols, equivalence classes...»

http://pubs.opengroup.org/onlinepubs/009696899/basedefs/xbd_chap09.html

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