github.com/benhoyt/goawk@v1.8.1/testdata/gawk/nlstrina.awk (about)

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    23  # Message-ID: <3987E7D5.2BDC5FD3@chem.rug.nl>
    24  # Date: Wed, 02 Aug 2000 11:20:21 +0200
    25  # From: Eiso AB <E.Ab@chem.rug.nl>
    26  # X-Mailer: Mozilla 4.72C-SGI [en] (X11; I; IRIX 6.5 IP32)
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    29  # To: bug-gnu-utils@gnu.org, arnold@gnu.org
    30  # Subject: bug? [GNU Awk 3.0.5]
    31  #  
    32  # Content-Type: text/plain; charset=us-ascii
    33  # Content-Transfer-Encoding: 7bit
    34  # X-UIDL: \f8"!(8G!!ZL$#!h>X!!
    35  # Status: R
    36  # 
    37  # hi Arnold,
    38  # 
    39  # 
    40  # Please try the script beneath...
    41  # I'm not sure if this is a bug or not, but I would expect 
    42  # the empty string as an array index just to be treated 
    43  # like any other string
    44  # 
    45  # so if ("" in ta) would be true, and for ( i in ta ) should loop only once.
    46  # 
    47  BEGIN {
    48          v=""
    49          ta[v]++
    50          if ( v in ta) print "a",v,++ta[v],ta[v]
    51  	print "b",v,++ta[v],ta[v]
    52          for( i in ta) print "c",++c,i,ta[i]
    53  } 
    54  # 
    55  # goodluck, Eiso
    56  # 
    57  # -- 
    58  #                                 _________
    59  # _______________________________/ Eiso AB \_________________________
    60  # 
    61  #            o                 
    62  #                                               
    63  #                  o               Dept. of Biochemistry
    64  #                                  University of Groningen		
    65  #                                  The Netherlands                      
    66  #                   o  
    67  #             . .     
    68  #          o   ^                   mailto:eiso@chem.rug.nl
    69  #          |   -   _               mailto:eiso@dds.nl
    70  #           \__|__/                http://md.chem.rug.nl/~eiso
    71  #              |	                 tel 4326
    72  #              |
    73  #             / \
    74  #            /   \
    75  #            |   |
    76  # ________ ._|   |_. ________________________________________________
    77  #