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Re: fd leak with {fd}>


From: Pierre Gaston
Subject: Re: fd leak with {fd}>
Date: Mon, 26 Nov 2012 15:49:49 +0200

On Mon, Nov 26, 2012 at 3:41 PM, Pierre Gaston <address@hidden>wrote:

>
>
> On Mon, Nov 26, 2012 at 3:37 PM, Chet Ramey <address@hidden> wrote:
>
>> On 11/23/12 2:04 AM, Pierre Gaston wrote:
>>
>> > It seems rather counter intuitive that the fd is not closed after
>> leaving
>> > the block.
>> > With the normal redirection the fd is only available inside the block
>> >
>> > $ { : ;} 3>&1;echo bar >&3
>> > -bash: 3: Bad file descriptor
>> >
>> > if 3 is closed why should I expect {fd} to be still open?
>>
>> Because that's part of the reason to have {x}: so the user can handle the
>> disposition of the file descriptor himself.
>
> .
> I don't see any difference between 3> and {x}> except that the later free
> me from the hassle of avoid conflicting fd
>

It seems that ksh93 behaves just like bash in this regard....
Well, as I don't use it I don't really care, but I vote for this as a bug
as I fail to see the benefit of this behavior as i find it useless and not
consistent with the normal redirection.


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