Re: declare does not always set variable flags prior to assignment

[Chet Ramey]

On 10/4/21 10:17 AM, Léa Gris wrote:
> Found out that the declare statement does not properly set all variable 
> flags before assign values:
>
>
> unset arr
> declare -i -a arr=(1 2 3)
> declare -p arr
> > declare -ai arr=([0]="1" [1]="2" [2]="3")
>
> this is ok
>
> declare +i -a arr=(hello world)
> declare -p arr
> > declare -a arr=([0]="0" [1]="0")
>
> this is not ok as arr assignment was handled as integers

It's an interesting order-of-operations question. You can make a case that
the shell should unset the attributes before expanding the words in the
compound assignment statement, since we special-case setting the attributes
for declaration commands. Let me look at that.

Chet

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/