Re: have you ever mistyped [[:lower:]] as [:lower:] ?

[Paolo Bonzini]

>>> Such a behavior conforms to POSIX, which explicitly
>>> says that [A-Z] has unspecified behavior outside
>>> the POSIX locale.  (See POSIX 9.3.5 point 7 at
>>>
>>> Users invariably want the Emacs behavior, not the
>>> grep behavior.
>>
>> An easy sell.  Good!
>
> In fact, it might even be nice to preserve the locale-dependent existing
> behavior of collating-element ranges for '[[.A.]-[.Z.]]', even while
> changing the simpler [A-Z] to do the encoding-based range, so that a rare
> user that really DID mean to get locale-dependent collation range can still
> do so.

I agree with this, however it would have to be agreed upon with glibc.

Paolo