Re: bash 5.1 heredoc pipes problematic, shopt needed

[Lawrence Velázquez]

> On Apr 24, 2022, at 3:41 PM, Oğuz <oguzismailuysal@gmail.com> wrote:
> 
> 24 Nisan 2022 Pazar tarihinde Ángel <angel@16bits.net> yazdı:
>> 
>> I think a shopt makes more sense. Forcing heredocs to be files although
>> something legit to request, is more a caller workaround to bugs in
>> called programs.
>> 
> 
> https://lists.gnu.org/archive/html/bug-bash/2020-12/msg00084.html


Oh yeah, I remember this.  Here is Chet's position at the time:

https://lists.gnu.org/archive/html/bug-bash/2020-12/msg00085.html


Begin forwarded message:

> From: Chet Ramey <chet.ramey@case.edu>
> Subject: Re: Is there a way to force here-documents/strings to use temporary 
> files?
> Date: December 20, 2020 at 3:53:32 PM EST
> To: Oğuz <oguzismailuysal@gmail.com>, bug-bash <bug-bash@gnu.org>
> Cc: chet.ramey@case.edu
> Reply-To: chet.ramey@case.edu
> 
> On 12/20/20 2:25 AM, Oğuz wrote:
> 
>> So, is there any way to force here-documents to use temporary files no
>> matter how long the expanded document is? If not, it would be nice if
>> compat50 had this effect.
> 
> There is not. I'm not sure that a compat setting would be appropriate for
> something that is purely an implementation issue.
> 
> There was a fairly extensive discussion that preceded this change, starting
> with
> 
> https://lists.gnu.org/archive/html/bug-bash/2019-03/msg00073.html
> 
> and continuing the next month (!) with
> 
> https://lists.gnu.org/archive/html/bug-bash/2019-04/msg00007.html
> 
> One can argue that the concerns on either side (seeking on stdin vs.
> assuming that here-strings will never hit the file system) are assumptions
> that should not be made, for instance
> 
> https://lists.gnu.org/archive/html/bug-bash/2019-03/msg00075.html
> or
> https://lists.gnu.org/archive/html/bug-bash/2019-03/msg00082.html
> 
> I decided ultimately to make the change for the most common cases, where
> the amount of data passed in a here string or here document is small. But
> that is simply an implementation detail; the documented semantics of here-
> documents and here-strings aren't changed.
> 
> -- 
> ``The lyf so short, the craft so long to lerne.'' - Chaucer
>                ``Ars longa, vita brevis'' - Hippocrates
> Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/


-- 
vq