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From: Sean Whitton <spwhitton@email.arizona.edu>
To: Jim Porter <jporterbugs@gmail.com>, Eli Zaretskii <eliz@gnu.org>,
	Ken Brown <kbrown@cornell.edu>
Cc: larsi@gnus.org, 56025@debbugs.gnu.org
Subject: bug#56025: 29.0.50; em-extpipe-test-2 times out on EMBA and Cygwin
Date: Sun, 26 Jun 2022 14:11:45 -0700	[thread overview]
Message-ID: <8735fr2kq6.fsf@melete.silentflame.com> (raw)
In-Reply-To: <4676f52c-4758-38df-f0f4-dbcb5d848c1b@gmail.com>

Hello,

On Sun 26 Jun 2022 at 10:22AM -07, Jim Porter wrote:

> On 6/26/2022 10:12 AM, Sean Whitton wrote:
>> On Fri 24 Jun 2022 at 04:03pm -07, Jim Porter wrote:
>>
>>>     When [EOF is] received, all the bytes waiting to be read are
>>>     immediately passed to the process without waiting for a <newline>, and
>>>     the EOF is discarded. Thus, if there are no bytes waiting (that is,
>>>     the EOF occurred at the beginning of a line), a byte count of zero
>>>     shall be returned from the read(), representing an end-of-file
>>>     indication.
>>>
>>> I interpret that to mean that the preferred way to indicate end-of-file
>>> to `rev' in this case is to send it "hi [NL] [EOF]". The second EOF that
>>> Eshell sends when closing the stderr output handle is superfluous, but
>>> it works fine as far as I can tell.
>>>
>>> [1] https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap11.html
>>
>> The text states unconditionally that when an EOF is received it is
>> discarded by the OS.  So we can infer that it's fine to send three,
>> according to the standard -- it's not just that it happens to work.
>>
>> Thanks again for working on this.
>
> Ah, good catch. I glossed over the last sentence in that paragraph in
> the spec (hence why I didn't copy-paste it).

I was actually thinking it was implied by the first sentence of what you
quoted.

-- 
Sean Whitton





  reply	other threads:[~2022-06-26 21:11 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-16 18:30 bug#56025: 29.0.50; em-extpipe-test-2 times out on EMBA and Cygwin Ken Brown
2022-06-16 19:30 ` Sean Whitton
2022-06-16 22:01   ` Ken Brown
2022-06-17 13:39     ` Ken Brown
2022-06-18  0:57       ` Sean Whitton
2022-06-18  2:07         ` Ken Brown
2022-06-18  2:35           ` Ken Brown
2022-06-18  3:50           ` Jim Porter
2022-06-18 17:52             ` Ken Brown
2022-06-18 19:02               ` Jim Porter
2022-06-18 20:51                 ` Ken Brown
2022-06-18 22:00                   ` Jim Porter
2022-06-18 23:46                     ` Sean Whitton
2022-06-19 16:02                     ` Ken Brown
2022-06-24  1:18                       ` Ken Brown
2022-06-24  4:40                         ` Sean Whitton
2022-06-24  6:07                         ` Eli Zaretskii
2022-06-24 16:53                           ` Jim Porter
2022-06-24 22:23                             ` Sean Whitton
2022-06-24 23:03                               ` Jim Porter
2022-06-25  5:34                                 ` Eli Zaretskii
2022-06-25 16:13                                   ` Jim Porter
2022-06-25 16:53                                     ` Eli Zaretskii
2022-06-26 16:27                                       ` Lars Ingebrigtsen
2022-06-26 17:12                                 ` Sean Whitton
2022-06-26 17:22                                   ` Jim Porter
2022-06-26 21:11                                     ` Sean Whitton [this message]
2022-06-27 13:25                                       ` Ken Brown
2022-06-27 15:51                                         ` Michael Albinus
2022-06-27 16:22                                           ` Ken Brown
2022-06-27 19:13                                             ` bug#56025: [EXT]Re: " Sean Whitton
2022-06-27 21:17                                               ` Ken Brown
2022-06-27 19:18                                         ` Jim Porter
2022-06-27 21:19                                           ` Ken Brown
2022-07-01  3:52                                             ` Jim Porter
2022-07-01  3:58                                               ` Jim Porter
2022-07-06 22:33                                               ` Ken Brown
2022-07-07  4:35                                                 ` Jim Porter
2022-07-07  4:42                                                   ` Jim Porter
2022-07-07 12:42                                                     ` Ken Brown
2022-07-17  2:35                                                       ` bug#56025: [WIP PATCH] " Jim Porter
2022-07-17  6:03                                                         ` Eli Zaretskii
2022-07-17 17:44                                                           ` Jim Porter
2022-07-17 18:26                                                             ` Eli Zaretskii
2022-07-17 18:51                                                               ` Jim Porter
2022-07-18  8:09                                                             ` Michael Albinus
2022-07-19  1:58                                                               ` Jim Porter
2022-07-19  7:59                                                                 ` Michael Albinus
2022-07-17 21:59                                                         ` Ken Brown
2022-07-18  5:26                                                           ` Jim Porter
2022-07-22  4:16                                                             ` bug#56025: [PATCH v2] " Jim Porter
2022-07-22 19:00                                                               ` Ken Brown
2022-07-24  4:05                                                                 ` Jim Porter
2022-07-24  5:19                                                                   ` bug#56025: [PATCH v3] " Jim Porter
2022-07-24  5:29                                                                     ` bug#56025: [PATCH v4] " Jim Porter
2022-07-24  9:08                                                                       ` Lars Ingebrigtsen
2022-07-24  9:48                                                                         ` Eli Zaretskii
2022-07-24 21:04                                                                         ` Ken Brown
2022-07-24  9:47                                                                       ` Eli Zaretskii
2022-07-24 17:36                                                                         ` bug#56025: [PATCH v5] " Jim Porter
2022-07-24 20:30                                                                           ` Ken Brown
2022-07-31  1:01                                                                             ` Jim Porter
2022-08-06  1:10                                                                               ` Jim Porter
2022-08-06 12:17                                                                                 ` Lars Ingebrigtsen

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