Hello,
While using test -v, I noticed that it returns false when I use it
with a sparse or empty array. I need to add [@] or [index] to have it
return true.
Is this expected? If so, it is not documented. It only has:
"True if the shell variable varname is set (has been assigned a value)."
I'm using GNU bash, version 5.0.16(1)-release (x86_64-pc-linux-gnu)
$ A=()
$ test -v A || echo not defined
not defined
Should it?
$ A=(x)
$ test -v A || echo not defined
OK
$ A=()
$ A[1]=1
$ test -v A || echo not defined
not defined
Should it? 'test -v A' is equivalent to 'test -v A[0]'
$ test -v A[1] || echo not defined
$ test -v A[2] || echo not defined
not defined
if index is specified, it would be ok to have it return false. It
would be a better way to test if an array contains a value (other than
variable expansion).
$ test -v A[@] || echo not defined
This only fails when A is an empty array, which might be correct.
Regards,
---
Luiz Angelo Daros de Luca
[email protected]
