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Date:	Thu, 19 Jul 2012 14:35:56 +0200
Message-ID:	<CAEhDDbCJyHY-MWPCZ5=OQJFyvohuUU4AFsoPDzFudLQgfb-8Jw@mail.gmail.com>
Subject:	Re: length in gawk returns wrong value
From:	Csaba Raduly <rcsaba AT gmail DOT com>
To:	cygwin AT cygwin DOT com
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On Thu, Jul 19, 2012 at 1:39 PM, Corinna Vinschen  wrote:
> On Jul 19 11:27, Ralf wrote:
>> Corinna Vinschen <corinna-cygwin <at> cygwin.com> writes:
>>
>> >
>> > Uh oh.  1.7.9 is old.  Please update.
>> >
>> > > 0000000   R 374   c   k   e   n  \r  \n
>> > > 0000010
>> > > Length: 1
>> > >
>> > > What can I do to get the correct length in gawk without changing
>> > > ttt.txt?
>> >
>> > Dunno.  This is not what I see.  What did you have $LANG and $LC_CTYPE
>> > set to?  Here's what I see:
>> >
>> >   $ uname -a
>> >   CYGWIN_NT-6.1 vmbert7 1.7.16(0.261/5/3) 2012-07-09 14:51 i686 Cygwin
>> >
>> >   $ echo $LANG
>> >   C.UTF-8
>> >
>> >   $ echo "Rücken" > ttt.txt
>> >   $ od -c ttt.txt
>> >   0000000   R 303 274   c   k   e   n  \n
>> >   0000010
>> >
>> >   $ gawk '{print "Length: " length($0)}' ttt.txt
>> >   Length: 6
>> >
>> >   $ gawk --version | head -1
>> >   GNU Awk 4.0.1
>> >
>> > Corinna
>> >
>>
>> After updating I added following lines on top of my script:
>>  export LANG=C.UTF-8
>>  echo LANG: $LANG
>>  echo LC_CTYPE: $LC_TYPE
>>  c:/unix/bin/gawk --version | head -1
>>
>> And this is my output:
>>  LANG: C.UTF-8
>>  LC_CTYPE:
>>  GNU Awk 4.0.1
>>  CYGWIN_NT-6.0-WOW64 WIESWEG 1.7.15(0.260/5/3) 2012-05-09 10:25 i686 Cygwin
>>  0000000   R 374   c   k   e   n  \r  \n
>>  0000010
>>  Length: 5
>>
>> Very strange!
>
> Not at all.  The file contains an invalid character.  0374 is the
> umlaut-u in the ISO-8859-1 or ISO-8859-15 codesets.  Try this:
>
>   $ LC_ALL=de_DE gawk '{print "Length: " length($0)}' ttt.txt
>   Length: 6
>
> When you create the file under the UTF-8 codeset, you'll get:
>
>   0000000   R 303 274   c   k   e   n  \n
>

Proving, once again, that "There Ain't No Such Thing as Plain Text"
http://www.joelonsoftware.com/articles/Unicode.html


Csaba
-- 
GCS a+ e++ d- C++ ULS$ L+$ !E- W++ P+++$ w++$ tv+ b++ DI D++ 5++
The Tao of math: The numbers you can count are not the real numbers.
Life is complex, with real and imaginary parts.
"Ok, it boots. Which means it must be bug-free and perfect. " -- Linus Torvalds
"People disagree with me. I just ignore them." -- Linus Torvalds

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