length in gawk returns wrong value

Corinna Vinschen corinna-cygwin@cygwin.com
Thu Jul 19 09:21:00 GMT 2012


On Jul 19 08:50, Ralf wrote:
> The following lines create a file named ttt.txt. The file ttt.txt contains
> exactly what I want (oct 374 for the umlaut u). But if you look at the output of
> these lines you can see that the function length() of gawk can not handle this
> character:
> 
> uname -a
> echo "Rücken" > ttt.txt
> od -c ttt.txt
> gawk '{print "Length: " length($0)}' ttt.txt
> 
> Output:
> CYGWIN_NT-6.0-WOW64 WIESWEG 1.7.9(0.237/5/3) 2011-03-29 10:10 i686 Cygwin

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 the contents of
> 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

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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