#From Jeffrey.B.Woodward@Hitchcock.ORG  Mon Feb 21 09:33:32 2000

#Message-id: <12901034@mailbox2.Hitchcock.ORG>

#Date: 20 Feb 2000 18:14:11 EST

#From: Jeffrey.B.Woodward@Hitchcock.ORG (Jeffrey B. Woodward)

#Subject: gawk 3.0.4 bug

#To: bug-gnu-utils@gnu.org

#Cc: arnold@gnu.org

#

#O/S: Digital UNIX 4.0D

#

#C Compiler: DEC C

#

#gawk version: 3.0.4

#

#Sample Program:

#gawk '

  BEGIN {

    pattern[1] = "bar" ; ignore[1] = 1

    pattern[2] = "foo" ; ignore[2] = 0

  }

  {

    for (i = 1 ; i <= 2 ; i++) {

      IGNORECASE = ignore[i]

      print match($0, pattern[i]) " " pattern[i] ":" $0

    }

  }

#' << -EOF-

#This is foo

#This is bar

#-EOF-

#

#Program Output:

#0 bar:This is foo

#0 foo:This is foo

#9 bar:This is bar

#9 foo:This is bar

#

#

#**Expected** Output:

#0 bar:This is foo

#9 foo:This is foo

#9 bar:This is bar

#0 foo:This is bar

#

#

#This problem appears to be directly related to IGNORECASE. If

#IGNORECASE remains constant, the program behaves as expected;

#however, switching IGNORECASE seems to causes problems - it is

#almost as though the pattern stored in the variable is treated

#as a constant and the regexp() is not recompiled(?) - just a

#guess...

#

#

#Thanks,

#-Jeff Woodward