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From: Junio C Hamano <gitster@pobox.com>
To: Johannes Sixt <j.sixt@viscovery.net>
Cc: "Shawn O. Pearce" <spearce@spearce.org>, git@vger.kernel.org
Subject: Re: [PATCH 2/6] Automatically close stderr pipes created by run_command
Date: Sat, 16 Feb 2008 00:25:30 -0800	[thread overview]
Message-ID: <7vwsp5b951.fsf@gitster.siamese.dyndns.org> (raw)
In-Reply-To: <47B3F51C.3060002@viscovery.net> (Johannes Sixt's message of "Thu, 14 Feb 2008 09:00:28 +0100")

Johannes Sixt <j.sixt@viscovery.net> writes:

> Shawn O. Pearce schrieb:
>> Like the out pipe and in pipe, we now automatically close the err
>> pipe if it was requested by the caller and it hasn't been closed
>> by the caller.  This simplifies anyone who wants to get a pipe to
>> the stderr stream for another process.
>
> IMHO, this is backwards.
>
> The .in, .out, .err members of struct child_process serve two different
> purposes:
> ...
> Notice that in a clean implementation:
> ...
> The current implementation of start_command/finish_command as well as its
> callers don't follow these rules (because they are not documented
> anywhere).

We should define what the clean semantics of this API should be,
and update Documentation/technical/api-run-command.txt, before
going any further.

And I happen to notice two of your names in the list of people
who have been involved in its evolution ;-).

      parent reply	other threads:[~2008-02-16  8:28 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-14  6:22 [PATCH 2/6] Automatically close stderr pipes created by run_command Shawn O. Pearce
2008-02-14  8:00 ` Johannes Sixt
2008-02-15 17:11   ` Junio C Hamano
2008-02-15 19:45     ` Johannes Sixt
2008-02-15 22:14       ` Junio C Hamano
2008-02-16 17:36         ` [PATCH] start_command(), .in/.out/.err = -1: Callers must close the file descriptor Johannes Sixt
2008-02-16 17:36           ` [PATCH] start_command(), if .in/.out > 0, closes file descriptors, not the callers Johannes Sixt
2008-02-16 22:55             ` Junio C Hamano
2008-02-17  7:42               ` Shawn O. Pearce
2008-02-17  8:07                 ` Junio C Hamano
2008-02-17  8:20                   ` Shawn O. Pearce
2008-02-17  9:29               ` Johannes Sixt
2008-02-21 22:42                 ` [PATCH v2] " Johannes Sixt
2008-02-22  1:17                   ` Junio C Hamano
2008-02-16  8:25   ` Junio C Hamano [this message]

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