echo $BASH_VERSION
./histexp.tests: line 37: history: !!:z: history expansion failed
    1  for i in one two three; do echo $i; done
    2  /bin/sh -c 'echo this is $0'
    3  ls
    4  echo $BASH_VERSION
    1  for i in one two three; do echo $i; done
    2  /bin/sh -c 'echo this is $0'
    3  ls
    4  echo $BASH_VERSION
    5  HISTFILE=$TMPDIR/newhistory
    6  echo line 2 for history
echo line 2 for history
echo line 2 for history
set -H
echo line 2 for history
line 2 for history
    1  for i in one two three; do echo $i; done
    2  /bin/sh -c 'echo this is $0'
    3  ls
    4  echo $BASH_VERSION
    5  HISTFILE=$TMPDIR/newhistory
    6  echo line 2 for history
    7  set -H
    8  echo line 2 for history
a b c d e
echo a b c d e
a b c d e
echo line 2 for history
line 2 for history
echo line 8 for history
line 8 for history
/bin/sh -c 'echo this is $0'
this is /bin/sh
echo sh
sh
echo /bin
/bin
echo e
e
a b c d e
echo b c d e
b c d e
echo b c d
b c d
echo d e
d e
echo d e
d e
echo b c d
b c d
file.c
echo file
file
echo .c
.c
echo 'file'
file
bax.c
echo $file
bax
echo .c
.c
echo '$file'
$file
a b c d e
echo 'a' 'b' 'c' 'd' 'e'
a b c d e
echo 'a b c d e'
a b c d e
foo.c foo.o foo.html foo.h
echo bar.c foo.o foo.html foo.h
bar.c foo.o foo.html foo.h
echo bar.c bar.o bar.html bar.h
bar.c bar.o bar.html bar.h
echo xbar.c xbar.o xbar.html xbar.h
xbar.c xbar.o xbar.html xbar.h
echo xbar.c xbar.o xbar.html xbar.h
xbar.c xbar.o xbar.html xbar.h
echo xwhix.c xwhix.o xwhix.html xwhix.h
xwhix.c xwhix.o xwhix.html xwhix.h
echo xwhix.c xwhix.o xwhix.html xwhix.h
echo 'xwhix'
xwhix
echo 'xwhix.h'
xwhix.h
echo 'xwhix.h'
xwhix.h
echo 'xwhix.h'
xwhix.h
    7  set -H
    8  echo line 2 for history
    9  echo a b c d e
   10  echo line 2 for history
   11  echo line 8 for history
   12  /bin/sh -c 'echo this is $0'
   13  echo sh
   14  echo /bin
   15  echo e
   16  echo a b c d e
   17  echo b c d e
   18  echo b c d
   19  echo d e
   20  echo b c d
   21  echo file.c
   22  echo file
   23  echo .c
   24  echo 'file'
   25  echo $file.c
   26  echo $file
   27  echo .c
   28  echo '$file'
   29  echo a b c d e
   30  echo 'a' 'b' 'c' 'd' 'e'
   31  echo 'a b c d e'
   32  echo foo.c foo.o foo.html foo.h
   33  echo bar.c foo.o foo.html foo.h
   34  echo bar.c bar.o bar.html bar.h
   35  echo xbar.c xbar.o xbar.html xbar.h
   36  echo xwhix.c xwhix.o xwhix.html xwhix.h
   37  echo 'xwhix'
   38  echo 'xwhix.h'
!!
!!
echo '!!' \!\!
!! !!
ok 1
ok 2
ok 3
echo shopt a
shopt a
echo a b c d 2> /dev/null
a b c d
one two three four
echo two ; echo four  
one two three four
echo four ; echo two
!
!
!
!
!
!
!
!
!
\!
\!
\!
\!
a
b
c
echo "#!/bin/bash" set -o posix
#!/bin/bash set -o posix
!!
!!
a
echo $(echo echo a)
echo a
a
echo echo a $(echo echo a)
echo a echo a
b
!! $(echo !!)
c
echo "echo c" "$(echo echo c)"
echo c echo c
d
echo "echo d" $(echo "echo d")
echo d echo d
e
!! !!
f
!!
f
!!
g
echo "echo g"
echo g
g
eval echo "echo g"
echo g
h
echo \!\! `echo echo h`
!! echo h
i
echo echo i `echo echo i`
echo i echo i
j
echo `echo j` echo j
j echo j
a
cat < <(echo echo a)
echo a
b
echo echo b `echo echo b`
echo b echo b
c
!
d
!
e
! !
./histexp4.sub: line 33: !': event not found
/tmp/Step1
echo /$(echo tmp)/Step1
/tmp/Step1
echo /<(echo tmp)/Step1 > /dev/null
/tmp/Step1
echo $(echo /tmp)/Step1
/tmp/Step1
echo <(echo /tmp)/Step1 > /dev/null
/+(one|two|three)/Step1
echo /+(one|two|three)/Step1
/+(one|two|three)/Step1
/*(tmp|dev|usr)/Step1
echo /*(tmp|dev|usr)/Step1
/*(tmp|dev|usr)/Step1
+(/one|/two|/three)/Step1
echo +(/one|/two|/three)/Step1
+(/one|/two|/three)/Step1
*(/tmp|/dev|/usr)/Step1
echo *(/tmp|/dev|/usr)/Step1
*(/tmp|/dev|/usr)/Step1
one
	echo echo one
echo one
echo one
echo one
    1  set -o histexpand
    2  echo one
    3  for f in a b c; do 	echo echo one; done
    4  history
two
	echo echo two
echo two
echo two
echo two
    1  echo two
    2  for f in a b c; do 	echo echo two; done
    3  history
a
echo !!
--between--
echo !!