Adding to an array in ksh

[columb]

I have an array in ksh script and I want to extend it
When I try a test script

#!/bin/ksh 
 
set -A arr one two three
index=0
while [[ $index -lt ${#arr[*]} ]]
do
  echo ${arr[$index]}
  (( index += 1 ))
done
set -A arr ${arr[*]} four
index=0
while [[ $index -lt ${#arr[*]} ]]
do
  echo ${arr[$index]}
  (( index += 1 ))
done

it works exactly as I would wish. However, if the array members have spaces in them i.e.

#!/bin/ksh 
 
set -A arr "part one" "part two"  "part three"
index=0
while [[ $index -lt ${#arr[*]} ]]
do
  echo ${arr[$index]}
  (( index += 1 ))
done
set -A arr ${arr[*]} "part four"
index=0
while [[ $index -lt ${#arr[*]} ]]
do
  echo ${arr[$index]}
  (( index += 1 ))
done

then the first three members are re-interpreted as six separate items when the array is rebuilt to add the fourth element. and the output looks like

part one
part two
part three
part
one
part
two
part
three
part four

There must be a better way of adding a new member to a ksh array but the IBM web pages don't really help. Any pointers please?

Ceci n'est pas un signature
Columb Healy

 

[columb]

I sorted it out myself (after stumbling across the O'Rielly book)
The code should look like

#!/bin/ksh
 
set -A arr "part one" "part two"  "part three"
index=0
while [[ $index -lt ${#arr[*]} ]]
do
  echo ${arr[$index]}
  (( index += 1 ))
done
 
arr[${#arr[*]}]="part four"
index=0
while [[ $index -lt ${#arr[*]} ]]
do
  echo ${arr[$index]}
  (( index += 1 ))
done

Ceci n'est pas un signature
Columb Healy

 

[Annihilannic]

Alternatively you could have used set -A arr "${arr[@]}" "part four".

Annihilannic.

 

[columb]

so the difference between ${arr[*]} and ${arr[@]} resembles the difference between $* and $@

Thanks Annihilannic

Ceci n'est pas un signature
Columb Healy

 

[Annihilannic]

Precisely.

Annihilannic.