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

[Eric Blake]

On 09/01/2010 08:25 AM, Eric Blake wrote:
> Personally, I'd _like_ to try to get POSIX to allow unspecified behavior
> for a bracket expression that starts and ends with colon, at which
> point, we could then drop the POSIXLY_CORRECT notion, and blindly reject
> [:upper:]. In fact, I'm going to go create that aardvark today (link to
> follow soon...)

In fact, one could argue that since current POSIX appears to be silent 
on behavior for duplicate listing of the same collating element within a 
single bracket expression, that grep.git's behavior of erroring out on 
'[:alpha:]' need not depend on POSIXLY_CORRECT in the first place.  But 
by that same argument, grep could error out on '[aa]', which is not very 
desirable.

At any rate, here's the bug report - now to see how the Austin Group reacts:
http://austingroupbugs.net/view.php?id=305

--
Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org