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Date: Tue, 04 Oct 2011 08:56:56 +0200
Message-ID: <20111004085656.Horde.ygwybElCcOxOiq446RkmP4A@webmail.df.eu>
From: Markus Hoenicka <markus DOT hoenicka AT mhoenicka DOT de>
To: cygwin AT cygwin DOT com
Subject: Re: error while running shell in emacs
References: <20110930162705 DOT Horde DOT SEW3ZruWis5OhdG5y5EHB8A AT webmail DOT df DOT eu> <4E8612C8 DOT 2020701 AT cornell DOT edu> <4E88D905 DOT 8010206 AT cornell DOT edu> <4E88DE0C DOT 1030108 AT cornell DOT edu> <4E8A3E33 DOT 8000806 AT cornell DOT edu>
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Ken Brown <kbrown AT cornell DOT edu> was heard to say:

> On 10/2/2011 5:56 PM, Ken Brown wrote:
>> On 10/2/2011 5:35 PM, Ken Brown wrote:
>>> On 9/30/2011 3:04 PM, Ken Brown wrote:
>>>> On 9/30/2011 10:27 AM, Markus Hoenicka wrote:
>>>>> Hi,
>>>>>
>>>>> after moving to a new position I have set up a fresh Cygwin
>>>>> installation:
>>>>>
>>>>> CYGWIN_NT-5.1 sbhc123 1.7.9(0.237/5/3) 2011-03-29 10:10 i686 Cygwin
>>>>>
>>>>> I use some Emacs extensions which execute external programs using
>>>>> (call-process). This used to work on my previous setup, but it fails on
>>>>> my current box. The following command run in Emacs reproduces what
>>>>> seems
>>>>> to be the problem:
>>>>>
>>>>> (call-process "bash" nil '(t t) nil "-ic" "ls -al")
>>>>> bash: Kann die Prozessgruppe des Terminals nicht setzen (-1).:
>>>>> Inappropriate ioctl for device
>>>>> bash: Keine Job Steuerung in dieser Shell.
>>>>>
>>>>> As you can see, my Cygwin also started speaking German, but I didn't
>>>>> get
>>>>> round to fix that yet. The messages loosely translate to: "cannot set
>>>>> terminal process group" and "no job control in this shell".
>>>>>
>>>>> Is this an incorrect setup of either Cygwin or Emacs, or is this indeed
>>>>> a problem that crept into Cygwin recently?
>>>>
>>>> I can reproduce this problem. It reminds me of a problem that I
>>>> reported in
>>>>
>>>> http://cygwin.com/ml/cygwin/2011-06/msg00174.html ,
>>>>
>>>> but that started with the 2011-05-05 snapshot and was fixed in the
>>>> 2011-06-16 snapshot. The problem you're reporting exists in Cygwin 1.7.9
>>>> and persists in the latest snapshot, but with different symptoms:
>>>> Instead of printing error messages, emacs hangs and has to be killed.
>>>>
>>>> If one of the Cygwin developers wants to look at this, here are the
>>>> steps to reproduce it:
>>>>
>>>> 1. Start emacs.
>>>> 2. Type <Ctrl-x>b<Enter>
>>>>
>>>> [This should put you in the *scratch* buffer.]
>>>>
>>>> 3. Type (or copy and paste) the following text into the *scratch*
>>>> buffer:
>>>>
>>>> (call-process "bash" nil '(t t) nil "-ic" "ls -al")
>>>>
>>>> 4. With the cursor positioned immediately after the closing parenthesis,
>>>> type <Ctrl-j>
>>>
>>> FWIW, the change in behavior (i.e., emacs hanging instead of giving an
>>> error message) starts with the 2006-06-13 snapshot. And it may be
>>
>> Ignore the statement that it starts with the 2006-06-13 snapshot. I made
>> a mistake and didn't test enough snapshots. I'll have to continue
>> bisecting. All I know at the moment is that there's an error message in
>> the 2011-05-10 snapshot and that the "hang" occurs in the 2011-06-13
>> snapshot. There are still a lot of snapshots in between that need
>> testing. Sorry for the noise.
>
> I've finished testing snapshots.  Up through the 2011-05-20  
> snapshot, I get the error messages reported by the OP:
>
> bash: cannot set terminal process group (-1): Inappropriate ioctl for device
> bash: no job control in this shell
>
> Starting with the 2011-05-28 snapshot, I instead get the message  
> "Aborted".  Starting with the 2011-06-01 snapshot, I get the  
> "hanging" behavior that I reported previously (with a stopped bash  
> process).
>
> There was a similar pattern in the problem I reported in
>
>   http://cygwin.com/ml/cygwin/2011-06/msg00174.html
>
> Ken
>

Do you have any idea which Cygwin DLL version introduced the problem?  
I have never used snapshots, but as I can't access my previous box  
anymore I can't really tell which version it ran.

regards,
Markus


-- 
Markus Hoenicka
http://www.mhoenicka.de
AQ score 38



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