GAWK bug ?

[Celsus English]

Hi - methinks I found a bug in gawk - GNU Awk 3.1.3 (obtained from Internet) 
running on MS-DOS.

Simple script to add a new cell to rows in a comma-separated file if the 6th 
field contains a specific string
e.g. Add2csv String1 String2
if field 6 contains "String1", create a new field (cell) at the end of the 
record (row) containing "String2"


Add2csv.bat contains

gawk -F, -f Add2csv.txt -v PAR1=%1 -v PAR2=%2 Events.csv > work1.txt
copy work1.txt Events.csv


Add2csv.txt which works nicely DID contain
{if ($6 !~ PAR1) print $0
           else print $0","PAR2}

However I wanted the matching to be case-insensitive so I tried to put
IGNORECASE = 1
at the start of Add2csv.txt

This DOUBLED-UP the number of records output - each line was duplicated !!!

I removed the IGNORECASE line and changed the 1st line to
{if (tolower($6) !~ tolower(PAR1)) print $0

which works OK.

Regards,
(Mr.) Celsus English
Dublin, Ireland

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