bash quine

self.sh

#!/bin/bash

chr() {
  printf \\$(printf "%03o" $1)
}

declare -a data
data=(
'#!/bin/bash'
''
'chr() {'
'  printf \\$(printf "%03o" $1)'
'}'
''
'declare -a data'
'data=('
'%DATA%'
')'
''
'i=0'
'length=${#data[*]}'
'while test $i -lt $length; do'
'  if test "${data[i]}" = "%DATA%"; then'
'    j=0'
'    while test $j -lt $length; do'
'      echo "$(chr 39)${data[j]}$(chr 39)"'
'      j=$[j+1]'
'    done'
'  else'
'    echo "${data[i]}"'
'  fi'
'  i=$[i+1]'
'done'
)

i=0
length=${#data[*]}
while test $i -lt $length; do
  if test "${data[i]}" = "%DATA%"; then
    j=0
    while test $j -lt $length; do
      echo "$(chr 39)${data[j]}$(chr 39)"
      j=$[j+1]
    done
  else
    echo "${data[i]}"
  fi
  i=$[i+1]
done