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Date: Fri, 29 May 2009 12:22:24 -0400
From: Edward Lam <edward AT sidefx DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: 1.7.0-48: [BUG] Passing characters above 128 from bash command   	line
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IWAMURO Motonori wrote:
> I think that you should set "export LANG=en_US.ISO-8859-1" instead of
> "export LANG=LANG=en_US.ISO-8859-1".

Ah, sorry, copy/paste error. Yes, that finally works. Thank you!

I think there is still a bug here? I set LANG=C, then shouldn't be just 
NOT doing any encoding, thus work? If I do this on Linux, it works. If I 
use a cygwin compiled app, it also works.

-Edward

> 2009/5/30 Edward Lam <edward AT sidefx DOT com>:
>> IWAMURO Motonori wrote:
>>> The encoding of C locale is ASCII, and not ISO-8859-1.
>>> I don't think ASCII is the same as ISO-8859-1.
>>> Does it work on LANG=en_US.ISO-8859-1?
>> No, it doesn't. Mind you though, I haven't managed to get piconv to
>> recognize any of my LANG settings other than C in cygwin 1.7.
>>
>> $ export LANG=LANG=en_US.ISO-8859-1
>>
>> $ piconv
>> perl: warning: Setting locale failed.
>> perl: warning: Please check that your locale settings:
>>        LC_ALL = (unset),
>>        LANG = "LANG=en_US.ISO-8859-1"
>>    are supported and installed on your system.
>>
>> (... usage omitted...)
>>
>> $ ./bug arg1 "before `cat copyright.txt` after" arg3
>> 0: E:\cygwin1.7\tmp\bug.exe
>> 1: arg1
>> 2: before
>>
>> Regards,
>> -Edward
>>
>>> 2009/5/29 Edward Lam <edward AT sidefx DOT com>:
>>>> Alexey Borzenkov wrote:
>>>>> On Thu, May 28, 2009 at 7:28 PM, Edward Lam <edward AT sidefx DOT com> wrote:
>>>>>> PS. In case you haven't noticed, copyright.txt is not a long file. It
>>>>>> consists of a single byte, 0xA9.
>>>>> Did you try utf-8 encoding copyright.txt? Perhaps your locale is utf-8
>>>>> and the encoder fails.
>>>> How is one supposed to determine one's locale in cygwin? I do NOT have
>>>> LANG,
>>>> or any of the LC environment variables set. I even tried explicitly
>>>> setting
>>>> LANG=C and it still fails.
>>>>
>>>> The problem does seem to stem from the new UTF-8 support in cygwin 1.7.
>>>> However, I think something is going on here that is unexpected because
>>>> trying something similar on Linux has no problems. To confirm that it was
>>>> an
>>>> UTF-8 related problem, let me repeat the steps slightly differently
>>>> again.
>>>> Here we assume that I've already got bug.exe compiled which simply prints
>>>> out its arguments.
>>>>
>>>> $ export LANG=C
>>>>
>>>> $ ./bug arg1 "before `cat copyright.txt` after" arg3
>>>> 0: E:\cygwin1.7\tmp\bug.exe
>>>> 1: arg1
>>>> 2: before
>>>>
>>>> *Notice that argc is 3 when it should be 4!*
>>>>
>>>> $ piconv -f iso-8859-1 -t utf8 < copyright.txt > fubar.txt
>>>>
>>>> $ ./bug arg1 "before `cat fubar.txt` after" arg3
>>>> 0: E:\cygwin1.7\tmp\bug.exe
>>>> 1: arg1
>>>> 2: before © after
>>>> 3: arg3
>>>>
>>>> *So now everything works because I converted the character into UTF-8.*
>>>>
>>>> I think what this points to is some form of invalid source encoding of
>>>> the
>>>> command line argument when spawning NATIVE applications.
>>>>
>>>> Here's what happens when I try to compile bug.c using cygwin's gcc:
>>>>
>>>> $ gcc bug.c -o bug-gcc.exe
>>>>
>>>> $ ./bug-gcc arg1 "before `cat copyright.txt` after" arg3
>>>> 0: ./bug-gcc
>>>> 1: arg1
>>>> 2: before © after
>>>> 3: arg3
>>>>
>>>> So there seems to be some sort of special marshaling of the command line
>>>> arguments that only works when spawning cygwin apps, but breaks when
>>>> running
>>>> under native apps.
>>>>
>>>> Regards,
>>>> -Edward
>>>>
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>>>>
>>>
>>>
>>
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>>
> 
> 
> 


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