[bug-gawk] gawk bug: IGNORECASE=0 does not work

[Jeff B]

Hi,

gawk bug.  Better just to show you than explain it up top here.
I don't know if the bug affects anything else, eg other TRUE/FALSE
variables or whatever.


Thanks,
Jeff Barry
Acton, MA

---------

# We compare 'a' to 'A' and get no match as expected.
qbarry $?=0> gawk '
  BEGIN { if ( "a" == "A" ) print "match"; else print "no match" }'
no match

# Same compare but now we set IGNORECASE to 1 so we get a match as expected.
qbarry $?=0> gawk -v IGNORECASE=1 '
  BEGIN { if ( "a" == "A" ) print "match"; else print "no match" }'
match

# We explicitly set IGNORECASE to *ZERO* and, huh?  This should not match.
qbarry $?=0> gawk -v IGNORECASE=0 '
  BEGIN { if ( "a" == "A" ) print "match"; else print "no match" }'
match

------- version info -------

qbarry $?=0> uname -a
Linux atomik 3.10.17-smp #1 SMP Wed Oct 23 17:04:08 CDT 2013 i686 Intel(R) Atom(TM) CPU D510   @ 1.66GHz GenuineIntel GNU/Linux


qbarry $?=0> cat /etc/slackware-version
Slackware 14.1

I am up-to-date (2015-01-29) with all my Slackware patches.


qbarry $?=0> gawk --version
GNU Awk 4.1.0, API: 1.0 (GNU MPFR 3.1.2, GNU MP 5.1.3)
Copyright (C) 1989, 1991-2013 Free Software Foundation.
... etc ...