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bug#30066: 'get-bytevector-some' returns only 1 byte from unbuffered por

From: Ludovic Courtès
Subject: bug#30066: 'get-bytevector-some' returns only 1 byte from unbuffered ports
Date: Fri, 12 Jan 2018 11:15:08 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)

Andy Wingo <address@hidden> skribis:

> On Thu 11 Jan 2018 22:55, Mark H Weaver <address@hidden> writes:


>>>> Out of curiosity, is there a reason why you're using an unbuffered port
>>>> in your use case?
>>> It’s to implement redirect à la socat:
>>> https://git.savannah.gnu.org/cgit/guix.git/commit/?id=17af5d51de7c40756a4a39d336f81681de2ba447
>> Why is an unbuffered port being used here?  Can we change it to a
>> buffered port?
> This was also a question I had!  If you make it a buffered port at 4096
> bytes (for example), then get-bytevector-some works exactly like you
> want it to, no?

It might work, but that’s more by chance no?

I mean, if we declare the port as buffered, then we give the I/O
routines the “right” to fill in that buffer.



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