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Re: length in gawk returns wrong value
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
--
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